GUANGZHOU BAIYUN TECHNOLOGY CO., LTD. Company News

【NEWS】 Edited by Guangzhou Baiyun Chemical Industry Co., Ltd. Group standard T/GSI 088-2022 "Rapid detection method for alkane plasticizer in silicone sealant" officially released and implemented.   Background T/GSI 088-2022 "Rapid detection method for alkane plasticizer in silicone sealant"     With the continuous improvement of the quality of life, people have higher requirements for the quality and performance of houses. The energy-saving performance, safety performance, sound insulation and noise reduction, sun protection, comfort and durability of doors, windows and curtain walls are getting more and more attention. An important auxiliary material for bonding, the quality of the sealant has also become more important. Therefore, oil-extended sealants with a large amount of alkane plasticizers are increasingly rejected by the market.     Generally speaking, the detection of alkane plasticizers requires three types of tests: thermogravimetric analysis test, infrared spectroscopy test analysis or thermal weight loss in professional laboratory equipment, while the thin film test method specified in T/GSI 088-2022 can be simpler, It is convenient and quick to identify the presence or absence of alkane plasticizers in sealants, saving consumers the time of identification and selection, and providing another layer of guarantee for the quality of doors, windows and curtain walls.     Since its inception, BAIYUN has shouldered the responsibility of being a leader in industry standards, committed to industry norms, health, and sustainable development, actively leading and participating in the formulation and revision of international, national, industry standards, local standards, and group standards. Representing China's sealant industry on the international standardization stage, it has gained a wide range of industry reputation and influence. As early as 1993,         BAIYUN and Henan Building Materials Institute jointly edited my country's first national standard for silicone building sealant - GB/T 14683 "Silicon Building Sealant", which regulates the silicone sealant market and strengthens its quality Management and supervision play a very important role.     So far, BAIYUN has edited and participated in more than 220 international, domestic and industry standards, covering many fields such as prefabricated buildings, curtain walls, doors and windows, hollow, interior decoration, rail transit, solar photovoltaics, LED lighting, etc. The workhorse of the standardization process.     At the same time, as the editor-in-chief of T/GSI 088-2022, BAIYUN realized the hazards of alkane plasticizers early on, and issued a safety declaration in the industry, always solemnly promising that every curtain wall, door and window sealant product under the Baiyun brand will never No oil extension, no other inferior fillers that reduce quality are added to ensure consistent product quality.

  The cold wave weather swept across the country, and the temperature in most areas plummeted. China has experienced the strongest cold wave in 2022. Recently, the Central Meteorological Observatory issued a blue warning of cold wave. Most of China will usher in a new round of cold wave. During this period, the temperature will drop by 4-8°C successively, and the temperature in some areas will drop by more than 10°C.   However, what makes the doors, windows, curtain walls and walls bond together, and what blocks us from the first ray of cold wind in winter? Of course it is - sealant!   As an important auxiliary material widely used in the bonding and sealing of building curtain walls, doors and windows, interior decoration and other fields, sealant silently highlights its presence in every detail. So today, let us take a look at how to properly apply winter silicone structural sealants—— 01 Winter Construction Issues   The temperature in winter in the north is generally below zero, and the temperature and humidity vary greatly. The sealant is prone to the following problems: 1) When the temperature is too low, the wettability between the silicone structural sealant and the substrate surface decreases, and there may be imperceptible fog or frost on the substrate surface, which affects the adhesion between the silicone structural sealant and the substrate.   2) Under low temperature and low humidity conditions, the curing speed and bonding speed of silicone structural sealants are slower than normal, which will lead to longer curing time and affect construction. 02 Precautions for construction in low temperature environment   Too low temperature greatly restricts the performance of the sealant, but the sealing performance is undoubtedly a part that cannot be ignored in winter. If you want to avoid such problems, you must adapt to the current situation.   It should be noted that at present, there are two types of architectural silicone structural sealants used in curtain wall construction according to their components: one is a single-component silicone structural sealant, and the other is a two-component silicone structural sealant. The curing mechanism and factors affecting the curing of these two types of silicone structural sealants are different, and the construction methods in low temperature environments are also different.   According to the curing characteristics of silicone structural sealant in low temperature environment, the following points should be paid attention to when working in low temperature environment: Construction environment guarantee:   According to JGJ 102-2013 "Technical Specifications for Glass Curtain Wall Engineering" in 9.1 General Processing, the environmental temperature and humidity conditions of silicone structural sealant injection should meet the requirements of silicone structural sealant products. Take the requirements of Baiyun brand silicone structural sealant products in the construction process of the Winter Olympics as an example. The environmental requirements for the use of this product must be: a clean environment with a temperature of 10°C to 40°C and a relative humidity of 40% to 80%, and Construction is not permitted during rain or snow.   When constructing in a low-temperature environment, heating measures need to be taken to ensure that the construction temperature is higher than 10°C; while in construction in a low-temperature environment with an ambient temperature slightly lower than 10°C, a small-area sealant test must be carried out before use, and peeling and bonding must be carried out Conduct a performance test to confirm that the silicone structural sealant is cured and bonded well, and the curing time should be extended appropriately according to the situation. When necessary, it is necessary to choose to use xylene to wash and prime the coating to speed up the bonding speed and reduce the risk of poor bonding due to low ambient temperature. Beware of poor bonding during the sizing process: 1) Before construction, it is necessary to do an adhesion test in advance, and strictly follow the method recommended by the adhesion test for construction. 2) The batches of materials (aluminum, glass, sealant, cleaning agent, primer, etc.) used in the construction process are complicated, and there may be differences in different batches. Contact test. 3) During the construction process, the method of cleaning or applying the primer solution must conform to the construction process, strictly follow the "secondary rag method" for cleaning, and apply the primer solution in time after the cleaning solvent evaporates; the primer solution should be thin and uniform, pay attention to To ensure the connection of the next process, it is best to inject the sealant within half an hour after applying the primer. 4) The sealant injection process needs to ensure that the mixing ratio is correct, and pay attention to the uniform mixing of components A and B. These two items can be confirmed by the butterfly test and the pull-off test, respectively. It is also necessary to pay attention to sufficient exhaust when changing barrels.   If the exhaust is not sufficient, part of the silicone structural sealant will be mixed with a large number of dense air bubbles, that is, "bubble sealant". The bonding effect between the bubble sealant and the base material (aluminum, glass, etc.) is very poor. If the adhesive strip is pulled by hand, the adhesive strip will be separated from the base material, and at the same time, a layer of black marks will be left on the base material. 5) After the on-site plate production is completed, the plate needs to be moved horizontally to the maintenance area for maintenance. Misalignment between the aluminum frame and the glass is not allowed during the handling process, otherwise it will affect the bonding quality of the silicone structural sealant.   The maintenance environment and maintenance time must ensure that the tapping of single components is qualified: After the silicone structural sealant is injected, the curing process needs to be in a clean and ventilated environment, the temperature is kept at 10-40°C, and the humidity is kept at 50-90%. When the temperature and humidity of the curing environment are low, the curing time should be extended appropriately.   This situation is obvious in the one-component silicone structural sealant: that is, the curing state of the one-component structural adhesive sealant has a clear relationship with the curing time. Under the same environment, the longer the curing time, the higher the degree of curing. ▲Under low-temperature curing conditions, the injection depth of the single-component structural sealant is 10mm, and the time required for complete curing changes from 10 days to 15 days, and the curing time is extended   If necessary, take measures to increase the ambient temperature and humidity. The final result is subject to the rubber tapping test, in order to fully determine the curing time of the finished unit. After the finished rubber tapping test is qualified (see the figure below), it can be installed and transported.

  The national standard edited by Guangzhou Baiyun Chemical Industry Co., Ltd. GB/T 41753-2022 "Test method for durability of sealant artificial weathering pull-down compression cycle" Official release and implementation! Background GB/T 41753-2022   "Test method for artificial weathering pull-down compression cycle durability of sealants" The durability of the sealant is an important index to investigate whether the sealant can maintain its bonding and sealing performance and body performance for a long time during use. In actual use, many factors such as light, heat, humidity, force, deformation, etc. will affect the durability of the sealant, especially in outdoor scenarios, such as the sealing of the frame of photovoltaic modules, the seams of various outdoor lighting fixtures Sealants, window seals for automobiles and trains, seam sealants for high-speed rail ballastless tracks, seam seals for airport runways, etc. In order to more scientifically characterize the durability of sealants and standardize the evaluation of the performance changes of sealants under artificial aging conditions after being subjected to tensile and compression cyclic stresses, Baiyun Chemical took the lead in formulating a national standard - GB/T 41753-2022 "Artificial Weathering Pull-Down Compression Cycle Durability Test Method for Sealant".   The standard has recently been released for implementation. The popularization and application of this standard will enable users to better evaluate the durability of sealants used outdoors, which has important guiding significance for the selection of sealants, and will help sealant manufacturers to develop and produce sealant products with better durability. Thereby reducing the losses and adverse consequences caused by premature aging of sealants in various industries.   From the beginning of its establishment, BAIYUN has taken leading the healthy development of the industry as its own responsibility, actively leading and participating in the formulation and revision of sealants and related standards at home and abroad, representing China's sealant industry on the international standardization stage for many times, and has won a wide range of industries. reputation and influence. The release of this national standard is another milestone for BAIYUN on the road to standardization.   So far, BAIYUN has led or participated in more than 220 international, domestic, industry and group standards, covering many fields such as prefabricated buildings, curtain walls, doors and windows, hollow spaces, interior decoration, rail transit, solar photovoltaics, LED lighting, etc. The workhorse of the process. In the future, BAIYUN will join hands with more industry colleagues to forge ahead on the road of standardization and create a better future with you.

   Innovation is the source of vitality for sustainable and high-quality development of an enterprise. Over the past 37 years, BAIYUN has always been based on the actual needs of its own and industry development, focusing on the new material industry, taking the fields of construction sealant and industrial sealant as the core axis, laying out the innovation chain around the industrial chain, and continuously increasing its contribution to scientific research and innovation. Up to now, BAIYUN has applied for more than 400 patents (the actual number is 404), including 252 invention patents, accounting for more than 60%.    The achievement of excellent results is inseparable from BAIYUN's continuous efforts in adhering to innovation positioning, building an innovation platform, and building an innovation team. 01 Open the road to industry innovation    Founded in 1985, BAIYUN is the founder, leader and witness of China's silicone sealant industry. As the first silicone sealant manufacturer in China, BAIYUN actively invested in scientific research and innovation with a forward-looking strategic vision, and applied for the first invention patent in the industry in 1999, which opened up the chaotic sealant market at that time. The new door leads the industry's intellectual property construction into a new stage of development. Since then, BAIYUN has been adhering to the intellectual property policy of "leading the industry's technological innovation and building a global leading brand" to promote the company's innovative development. Since 2014, BAIYUN's road of innovation has officially entered the fast lane, and the number of patent applications has reached a new high every year, rapidly building and improving BAIYUN's intellectual property system. 02 Innovation platform is continuously consolidated    Over the years, BAIYUN has always attached great importance to the construction of technological platforms, continuously enhanced technological innovation capabilities, and achieved remarkable results. At present, the company has nine technical platforms: postdoctoral scientific research workstation and academician expert enterprise workstation; provincial engineering technology research and development center and enterprise technology center, CNAS testing center; the only demonstration base for new technology industrialization of building sealant of the Ministry of Construction, international scientific and technological cooperation base, the country's first batch of prefabricated construction industry bases and other scientific research bases. In 2013, BAIYUN won the honor of the only "First Batch of National Intellectual Property Advantage Enterprises" in the industry. Relying on nine major technology platforms, BAIYUN has created a technological innovation development path with enterprises as the main body, market-oriented, and combination of production, learning and research, setting an excellent example for the industry. Recently, BAIYUN was selected as the 2022 National Technology Innovation Demonstration Enterprise. This award is a high affirmation of BAIYUN's persistence in technological innovation, and it also encourages BAIYUN to make persistent efforts on the road of independent innovation. 03 Continuous empowerment of international cooperation    At the beginning of the 21st century, BAIYUN began to stride abroad and emerged on the world stage. With its ingenious manufacturing and continuous innovation and breakthroughs, it has achieved many milestone victories and won a place as a Chinese national brand. At present, BAIYUN has applied for 16 PCT certifications and 3 US patents. As part of the overseas intellectual property layout, the application of these two types of patents contributes to the realization of BAIYUN's corporate vision of "committed to building a global leading sealant brand". 04 Innovative achievements emerge one after another    On the road of struggle, BAIYUN's innovative strength has been continuously recognized—— ◉In 1998, SS601 neutral silicone sealant won the third prize of Guangzhou Science and Technology Progress Award, and SS621 silicone structural sealant was rated as a national new product; ◉In 1999, SS621 and SS622 silicone structural sealants won the third prize of Guangdong Science and Technology Progress Award and the second prize of Guangzhou Science and Technology Progress Award; ◉In 2001, silicone stone weather-resistant sealant won the third prize of Guangzhou Science and Technology Progress Award; ◉In 2005, the continuous production process of high-performance silicone sealant won the first prize of Guangzhou Science and Technology Progress Award; ◉In 2005, de-ethanol type RTV silicone rubber was rated as a national key new product; ◉In 2006, the continuous production process of high-performance silicone sealant won the second prize of Guangdong Science and Technology Progress Award and the special award of Baiyun District Science and Technology Progress; ◉In 2006, ultra-high-performance silicone structural sealant was rated as a national key new product; ◉In 2007, de-ethanol type RTV silicone rubber won the third prize of Guangdong Science and Technology Progress Award; ◉In 2009, "an automatic continuous production device system and method for sealant" won the China Patent Excellence Award; ◉In 2011, the development project of high heat-resistant and fast-curing neutral acetone-free room temperature vulcanized silicone rubber won the second prize of Guangdong Science and Technology Progress Award and the first prize of Guangzhou Science and Technology Progress Award; ◉In 2012, "a continuous manufacturing process of a one-component moisture-curing silicone composition" won the China Patent Excellence Award; ◉In 2016, the special sealant for solar photovoltaic modules won the second prize of Guangzhou Science and Technology Progress Award; ◉In 2021, the two projects "Preparation and Industrialization of High-adhesion Silane-modified Polyether Waterproof Sealant for Prefabricated Buildings" and "Key Technology and Application of High-performance Building Energy-saving Materials in Hot and Humid Areas" won the "2020 Guangdong Province Second Prize of Science and Technology Progress Award”; ……     After years of accumulation, BAIYUN is continuously achieving excellent results on the road of adhering to independent technological innovation. Every time a high-quality honor is won, BAIYUN will have more motivation and vitality for internal innovation.

Recommended winter items Good things in winter in recent years - constant temperature kettle, constant temperature coaster; Family heating artifact - baseboard heater; The king of classic heating - electric blankets, electric heaters; ...     There are countless good things for winter, but most of them are electrical appliances. These electrical appliances have been carefully crafted in the production line, and finally entered every family in need of warmth. In the production process, there is an essential process, that is, bonding and sealing. As the most common material for bonding and sealing electronic appliances, silicone sealant has also been affirmed by the market because of its superior performance.     As an important material behind " winter", how does silicone sealant have such a good fit with electronic appliances? Today, let us reveal together—— 01 The linking of silicone sealant and electronic appliances     As a commonly used multifunctional polymer adhesive, silicone sealant can bond various substrates such as metal, organic plastic, glass, ceramics, etc., and has very superior performance. Silicone sealant is widely used in the field of electronic appliances. It can not only meet the needs of electronic and electrical product design, but also improve production efficiency and reduce costs. It is one of the indispensable and important auxiliary materials in this field. From household appliances such as washing machines, water heaters, and rice cookers to semiconductor devices such as integrated circuits, circuit boards, and chip packaging, silicone sealants can be seen everywhere. Silicone sealant is mainly based on polydimethylsiloxane, which is an elastic polymer rubber material formed after vulcanization by filling fillers, adding crosslinking agents, catalysts and other additives. There are two main types of its vulcanization principle, one is the condensation reaction, the sealant cross-links with water molecules to form a three-dimensional network structure, and releases small molecular substances. After the reaction is completed, an elastic rubber body is formed. ; The other type is mainly an addition reaction, and its curing principle is mainly in the presence of a Pt catalyst, and hydrosilylation occurs to form an elastomer. Therefore, the silicone sealant after forming an elastomer can play a role in sealing, fixing, and bonding in electronic modules of electronic and electrical components, and has many advantages during use. 02 Specific advantages     The combination of silicone sealant and electronic appliances has the following advantages: The working temperature range is wide, and the working performance does not change much at -50 ° C ~ 180 ° C after the elastomer is formed. It has certain elasticity and good tensile performance. The wear and tear of components and parts prolongs its service life, and at the same time it is easy to repair if it fails.     Excellent electrical insulation. Some data show that the vulcanized silicone sealant has good electrical insulation in the range of -60 ° C ~ 200 ° C, and the frequency and temperature changes have little effect on the dielectric constant and dielectric loss factor, which can effectively improve The safety and stability of electronic and electrical work.     The construction operation is simple and flexible, and the gluing equipment is low in cost, efficient and fast. For example, one-component silicone sealant can be precisely applied when used, and is suitable for bonding small parts inside electronic appliances.    Excellent aging resistance can prolong the service life of electronic and electrical components, and it is not easy to fail during use.     High flexibility in formula debugging. By adding functional fillers to silicone sealant raw materials, special functional silicone sealants can be realized, such as silicone sealants for electronic appliances with thermal conductivity, to ensure that the product is in use. Heat dissipation components can realize rapid heat conduction and heat dissipation through thermally conductive silicone sealants, which can protect electronic components and maintain stable operation of electronic products.     Other functional silicone sealants can also be realized, such as conductive silicone sealants, flame-retardant silicone sealants, ultra-high temperature resistant silicone sealants, etc.     Excellent light resistance, so that it has special applications in electronic appliances, such as silicone sealants for photovoltaics in solar cells.     At present, silicone sealants have been widely used in the fixing of components in refrigerators, air conditioners, washing machines and other household appliances, radiator filling, glass panel bonding partitions, storage box fixing, frame sealing, etc.; it can also be used in kitchen appliances. Bonding, such as range hood panel bonding, microwave induction cooker coil/microcrystalline plate bonding, microwave oven cavity/door body, oven door body/door handle bonding; it can also be used for bonding small household appliances, such as kettles, health pots Bonding of pot bottom/handle+pot body, electric iron heating soleplate/shell bonding, etc.     As a leading company in the sealant industry, BAIYUN is committed to dedicating the best products to human beings, offering comprehensive and systematic adhesive solutions and customized services in the field of electronic appliances for every consumer who pursues perfection, and helping electronic appliances Industry development, escorting the protection of sealant used in the electronic and electrical industry.

    First of all, Most of the construction silicone weather-resistant sealants on the market are one-component sealants, which need to react with moisture in the air during curing, so the temperature and humidity of the environment have a certain impact on their curing speed. usually: The higher the temperature, the faster the curing speed; The higher the humidity, the faster the cure.     Bulging generally occurs when the ambient relative humidity or temperature is low. Because the sealant cures at a slower rate, it will take longer for the sealant surface to cure to a sufficient depth. Before the sealant surface has cured to a sufficient depth, if the width of the sealant gap changes (this is usually due to the thermal The surface of the sealant seam will be affected and unevenness will appear. After these uneven surfaces are finally cured, the interior is solid, not hollow (the hollow is "bulges"), so we collectively call it "bulging phenomenon". So, how to construct it correctly?     The general idea of ​​reducing or solving the bulging phenomenon is two aspects: one is to speed up the curing speed of the sealant; the other is to reduce the deformation of the sealant seam at the initial stage of curing. Therefore, we have the following four construction recommendations: Selecting relatively fast curing sealants, such as BAIYUN's SS811 and SS511B, can solve some of the bulging problems. Do not use mineral oil filled weathering sealants for this option. Because the oil-filled adhesive shrinks significantly during the curing process, although the bulging phenomenon will be reduced to a certain extent, this type of product does not meet the national standard requirements for weather-resistant sealants, nor does it meet the requirements for curtain wall applications. Its weather resistance is poor, and the service life is not guaranteed.     However, if the relative deformation of the sealant seam (absolute deformation / sealant seam width) caused by low humidity or temperature difference, sealant seam size, etc. is too large, the products on the market today cannot eliminate this bulging phenomenon. Construction suggestion two: When the panel temperature difference is small and the joint deformation is small, the bulging problem can be solved. If the next day is cloudy, hurry up and work on that day. Because there is no sunlight, the temperature difference of the panel is small, the deformation of the sealant seam is small, and the bulging phenomenon is not easy to occur. If the next day is sunny, take appropriate shading measures, such as shielding with dust nets on scaffolding, so that the panels are not directly exposed to sunlight, reduce the temperature of the panels, and reduce joint deformation caused by temperature differences. Construction suggestion three:     Applying sealant when the plate expands and the sealant gap is narrow can improve the bulging phenomenon. It is recommended to choose a suitable time for gluing, such as construction when the panels of the facade are exposed to sunlight. Construction suggestion four:     Use the second sealant method! First make a concave sealant seam, wait for it to cure for 2~3 days, and after it becomes elastic, put a layer of sealant on its surface. It is recommended to repair the bulging sealant seam that is easily visible to the human eye; It is not recommended to re-sealant after tapping on the bulging sealant seam, which will not only cause waste, but also cannot solve the bulging problem.     Bulging is not scary, as long as we deal with it scientifically, we can minimize the occurrence of bulging.

    From September 28th to 30th, 2022, the 47th annual meeting of the Sealant Sub-Committee (ISO/TC59/SC8) of the International Organization for Standardization Construction and Civil Engineering Standardization Technical Committee (ISO/TC59/SC8) was successfully held. The conference was held online and offline, and the offline venue was in Lyndhurst, New Jersey, USA. Nearly 30 representatives from China, Germany, the United Kingdom, France, the United States, Belgium, the Netherlands, Japan and South Korea attended the meeting. Zhang Guanqi, technical director of Baiyun Chemical, Zeng Rong, deputy manager of the technical department, and Pang Dacheng, technical service engineer, attended the annual meeting.     During the meeting, Director Zhang Guanqi delivered two keynote speeches on behalf of Chinese experts.     The International Organization for Standardization is the world's largest non-governmental specialized organization for standardization, with several technical committees under it. ISO/TC59/SC8 is the technical committee of the International Organization for Standardization (ISO) on construction sealants. It currently manages 35 valid standards, including the following Set up 3 working groups, namely: WG5 High Displacement Capability Determination Working Group WG6 Durability Determination Working Group WG22 Curing Properties Working Group     At the meeting, the convenors of each working group and thematic group respectively introduced the work progress made since the annual meeting last year. In the discussion of the WG5 working group on adding 35 and 50 displacement capacity levels to ISO 11600 "Classification and Requirements for Construction Sealants", Zhang Guanqi, technical director of Baiyun Chemical, introduced the high-level sealants of 4 Chinese companies on behalf of the Chinese delegation. Validation tests performed. In the subsequent ISO/TC59/SC8 standard committee meeting, Director Zhang introduced a new standard project proposal on behalf of China - "Construction and Civil Engineering Sealants - Determination of Color Stability after Laboratory Accelerated Aging".     The significance of this standard proposal is to establish a test method for evaluating the color stability of sealants, to minimize the possible discoloration of white, gray, colored and transparent sealants after they are officially put into use. The resulting material loss and delays in the construction period and other issues.     The standard proposal comes from the Chinese national standard GB/T 13477.21 "Determination of the Color Stability of Sealants", which was formulated by BAIYUN and officially released in 2022. This proposal not only provides scientific and effective methods for testing the color stability of sealants It is another attempt by BAIYUN to implement my country's strategic guiding ideology on the internationalization of standards and transform my country's standards into international standards. In the end, the proposal was widely recognized by experts from various countries. The Bidding Committee decided to reactivate the WG10 Appearance and Aesthetics Working Group, with Zhang Guanqi as the convener of the working group to promote the formulation of the standard.     Standardization work is crucial to the high-quality development of my country's economy. As a leading company in China's sealant industry, BAIYUN shoulders the responsibility of leading the industry standard, spares no effort to participate in the formulation and revision of various domestic and foreign sealant-related standards, and is committed to industry norms, healthy and sustainable development——     So far, BAIYUN has participated in the drafting and revision of more than 220 international, national and industry standards;     Baiyun Chemical Co., Ltd. sends experts to attend the ISO/TC59/SC8 annual meeting every year, and also sends experts to participate in the work of several working groups (WG), including the leading ISO 13638:2021. The ISO standards that have participated in the revision and have been successfully released have reached 10 items;     In 2018, BAIYUN hosted the 43rd ISO/TC59/SC8 (Guangzhou, 2018) International Standardization Annual Conference, representing China in the world standardization formulation stage, and became the only Chinese sealant company that co-organized the conference;     As an important participant and maker of the international quality comparison research project for structural sealants, Baiyun Chemical led the completion of the world's most advanced group standard for silicone structural sealants - "High-performance Silicone Structural Sealants for Building Curtain Walls". ……     BAIYUN's continuous participation in international sealant standards and organizations, representing China's voice on the international standard sealant stage, has promoted the combination of my country's sealant standards and international standards, and has contributed to the internationalization of Chinese standards and the development of Chinese sealant brands. The world has laid a solid foundation.

    On the afternoon of September 19, 2022, Huang Lianxi, Chairman of the Board of Directors of China Lesso Group, Dai Hao, Vice Presidents, Jin Jinchao and other senior leaders visited Guangzhou Baiyun Chemical Industry Co., Ltd. for a visit . Baiyun Chemical General Manager Miao Mingsong, Marketing Director Li Fanming and other leaders warmly received the delegation. 01   Visit and Observe   Under the leadership of Li Fengming, Marketing Director of Baiyun Chemical, Huang Lianxi, Chairman of the Board of China Lesso Group, and his party visited the company's exhibition hall and intelligent production workshop to learn about Baiyun Chemical's 37 years of persistence and achievements. During the visit, the exchange group expressed high recognition of BAIYUN's decades of accumulated technical strength and strong sense of industry responsibility. 02 Special Report Afterwards, Dr. Fu Zi'en, deputy manager of Baiyun Chemical Technology Department, made a special report on "Solar Photovoltaic Adhesive Solutions", and conducted in-depth exchanges with the guests present at the technical level. Dr. Fu said that BAIYUN will start from itself to provide the photovoltaic market with better, green and healthy system bonding and sealing solutions, and is committed to accelerating the photovoltaic industry chain into an era of high-quality development. 03 Interaction During the exchange, Mr. Miao expressed his warm welcome and sincere thanks to the arrival of China Lesso Group. He said that Lesso's brand slogan of "Beautiful Insights into the Future" coincides with Baiyun Chemical's brand declaration of "Empowering Beauty". contribute to sustainable development.      Chairman Huang Lianxi said in his speech that in practical applications, sealants always play the role of "small material, big role". If the seal fails, it will have many adverse effects on the solar photovoltaic module, so the performance and quality of the sealant also have high requirements. Lesso Group has always attached great importance to quality, and will not neglect the quality of the entire assembly for the 1/200 cost of sealing materials.     In the future, BAIYUN will be more deeply and extensively involved in the construction of the photovoltaic industry, with high-quality products and professional solutions to help the green photovoltaic industry development, together with every dream of the industry to build a green, healthy and sustainable future.

The tenth anniversary of the 50-year durability test, this data is officially released! The surface of the highest 83 degrees set off a monstrous heat wave, About 3000 hours of sunshine all year round evaporate every trace of water. This is the Flaming Mountain in Xinjiang.       In 2012, BAIYUN launched the "50-year durability test of silicone sealant" in cooperation with the Aging Research Institute of Guangzhou Synthetic Materials Research Institute, and put silicone sealant samples in the exposure test field next to the Flaming Mountain in Turpan, Xinjiang. This is the first step in the 50-year durability test of natural exposure of silicone sealants in the world. In 2014, BAIYUN established a solid curtain wall at the Turpan exposure test site to investigate the performance change law of the silicone sealant on the solid curtain wall under stress.     After years of high temperature and exposure, how is the application of sealant on the BAIYUN physical exposure wall? Compared with other brands of sealants, what is the difference?     In 2022, on the occasion of the 10th anniversary of Xinjiang's 50-year durability test, BAIYUN will conduct a detailed inspection of the weather-resistant sealant and structural sealant of the glass curtain wall at the Xinjiang durability test base. In this issue, let us first walk into the actual application of weather-resistant sealants for glass curtain wall panels in Xinjiang, and explore together the durabilitys of weather-resistant sealants— 01 Sample situation Project: Xinjiang Exposure Curtain Wall Location: Flaming Mountain, Xinjiang First sizing time: September 2014 Sampling plate: front view of the large curtain wall - the unit element in the lower right corner, the control wall Sealant type: SS811, oil-filled sealant ▲The left (lower right of the large curtain wall) is the sampling area of BAIYUN weather-resistant sealant; The right (middle of the small curtain wall) is the sampling area for oil-filled sealant. 02 Sample site observation   It can be seen from the on-site observation that the BAIYUN weather-resistant sealant has no cracking, chalking, brittleness and other phenomena, and the adhesion is good. Comparing the insulating glass in contact with Baiyun weather-resistant sealant (left) and oil-filled weather-resistant sealant (right), it can be seen that the insulating glass in contact with Baiyun weather-resistant sealant did not change significantly, while the insulating glass in contact with oil-filled weather-resistant sealant did not change significantly. Insulating glass and butyl rubber are dissolved. Baiyun brand weather-resistant sealant VS oil-filled weather-resistant sealant   This kind of problem occurs because the oil-filled sealant contains alkane plasticizers (also known as white oil). These alkane plasticizers will migrate and diffuse out, and lead to a sealant of the insulating glass through the second structural adhesive of the insulating glass. Butyl gum was dissolved. This usually leads to the destruction of the air tightness of the insulating glass. It is foreseeable that if this kind of oil-filled sealant is used in the building, it will inevitably lead to the complete failure of the insulating glass under long-term use, resulting in problems such as condensation, accumulation of water, and oxidation of the Low-E film, which will cause the insulating glass to lose its effectiveness. It should have the functions of energy saving and heat preservation, light transmission and heat insulation. 03 Sample test Hardness Testing Sample test description: According to "Test Method for Indentation Hardness of Vulcanized Rubber or Thermoplastic Rubber" GB/T 531-2009, use a Shore durometer to test the hardness of the sealant strip samples. Sample test data: Conclusion: The hardness of the normal weather-resistant sealant remains good. The initial hardness of SS811 is 35, and the current hardness is 41. After 8 years of aging, the hardness has increased to a certain extent, but the increase is not large, and it still has good elasticity, which can continue to escort the curtain wall. . The hardness of the oil-filled sealant changes greatly, from the initial 30 to 65 in 2 years, and to 79 after 8 years. It has no elasticity and cannot play a sealing role. Weathering Sealant Tensile Testing Sample test instructions: Cut the weather-resistant sealant strip into a dumbbell-shaped test piece. The tensile test of dumbbell-shaped specimens is based on "Determination of Tensile Stress-Strain Properties of Vulcanized Rubber or Thermoplastic Rubber" GB/T 528-2009, made into dumbbell-shaped specimens, and tested on a tensile testing machine (the test environment temperature is 23 ℃ ). Sample test data- Tensile Data for SS811 Silicone Weather Resistant Sealant Conclusion: The average tensile strength of SS811 silicone weather-resistant sealant is 2.25MPa, and the elongation at break is 665.5%. The sealant sample still has good elasticity.     Through on-site inspection and data comparison, it can be seen that BAIYUN brand silicone weatherproof sealant has been tested in extreme environments for many years, and still maintains good performance. The warranty period of sealant and door and window sealant is up to 25 years, providing real and effective reference data. The world's first 50-year durability test for sealants Seeing is believing, data is proof!     In order to study the natural aging change law of silicone sealants, obtain the actual service life of silicone sealants, and provide more data support for improving the warranty period of silicone sealants, in 1997, BAIYUN adhered to the sense of responsibility and established a solid curtain wall development. corresponding research;     In 2012, BAIYUN cooperated with a third party - Guangzhou Synthetic Materials Aging Research Institute, and successively put samples in Guangdong and Xinjiang Turpan exposure fields and established a solid curtain wall to conduct atmospheric aging natural exposure to silicone sealants. The test is the first of its kind in the world for the 50-year durability test of natural exposure of silicone sealants. The exposure fields in the two places are the oceanic climate environment with high temperature and humidity and the desert climate environment with high temperature and dryness, which are quite representative. The time span is as long as 25 years, and the space span is half the earth. After being tested in a variety of extreme environments such as high temperature, drought, and humidity, BAIYUN sealant still exhibits excellent strength, elasticity and adhesion. We promise to provide a solid endorsement, and also provide a reliable basis for calculating the design and service life of silicone sealants in various regions. In the formulation of industry standards, national standards, and even international standards, we provide scientific and credible data support to achieve. It is of great value to maintain the healthy development of the industry and the future safety of the city.  

Set out to the northwest, On the shore of the Yellow River, in pursuit of the genes of the birthplace, On the loess, feel the vastness of life. Meet the challenge, Innovation Bureau. In the past year, although the national economic situation continued to slow down and the industry entered a difficult period of adjustment, all Baiyun people, including distributors, overcame difficulties and worked hard, and achieved remarkable new results! On August 15, 2022, under the leadership of the company's general manager Miao Mingsong, the outstanding distributors of Baiyun Chemical went to Ningxia, a beautiful place in the south of the Yangtze River, and started a rich cultural journey of 4 days and 3 nights. Through the sands of history, Come to a time-space dialogue with nature and humanities. Ningxia is the only province in China that is almost completely surrounded by the Great Wall of different historical periods, the only province with the tombs of the Xixia emperors, the only province whose entire region belongs to the Yellow River Basin... Nearly 300,000 pieces can be moved Cultural relics and numerous immovable cultural relics, as well as the colorful years behind them, are the foundation of its history and culture. Lakes, grasslands, deserts, oasis Baiyun touches the purity of the primitive depths from the temperature of his fingertips, and feels the bearing of the years and the heaven and earth from an epic perspective. Together, we can appreciate the magic of "Shang Jiangnan" bred by "Father Mountain" and "Mother River", and also re-evoke those legends that have been around for thousands of years, memories and reverie about ancient legends. Travel through history and look to the future. This tour of excellent dealers not only inspired more strength and potential of the dealer team, but also allowed everyone to actively exchange market conditions while relaxing, discuss the countermeasures in the current complex market environment, and let everyone understand Baiyun's brand and values. The concept has a deeper understanding and recognition. After the event, the dealers said that the event was an unforgettable experience! At the same time, for the common long-term business of Baiyun Chemical, all Baiyun people will also face challenges, seize opportunities, and innovate together, so as to realize the corporate vision of "global sealant leader brand" as soon as possible!

    On August 8, 2022, the inaugural meeting of the China Engineering Construction Standardization Association Building Curtain Wall Doors and Windows Professional Committee and the first working meeting of the first committee were held in Beijing. Zhang Guanqi, Technical Director of Guangzhou Baiyun Chemical Industry Co., Ltd., was successfully elected as Deputy Secretary-General and became the only elected person in the sealant industry! Founding background:     China Engineering Construction Standardization Association Building Curtain Wall Doors and Windows Professional Committee (hereinafter referred to as "Professional Committee") relies on China Academy of Building Research Co., Ltd. and is an integral part of China Engineering Construction Standardization Association. With the needs of building energy conservation and emission reduction and urbanization development and the further advancement of the dual carbon strategy, my country's building curtain wall doors and windows also show a systematic, industrialized, high energy saving and intelligent development trend.            With the rapid development of technology, the construction of the matching standard system is still lagging behind. The establishment of this professional committee aims to integrate the technical advantages of the industry, improve the level of standard preparation, coordinate the development of the industry from a macro perspective, plan the future of the industry, and at the same time provide important technical support for my country's building curtain wall doors and windows industry to participate in international competition.     As a leading enterprise in the domestic sealant industry, Baiyun Chemical has been committed to the promotion of industry standardization. So far, Baiyun Chemical has participated in the drafting and revision of more than 220 international, national and industrial standards, including 80 national standards, covering all fields of the sealant industry, and is the vanguard of industry standardization.     In the future, Baiyun Chemical will actively participate in the work of the professional committee, assist the platform to unite the building curtain wall doors and windows industry chain, unite and organize the national standardization workers of building curtain walls and doors, actively carry out engineering construction standardization activities, and continuously improve the professional engineering of building curtain walls and doors in my country. Build the level of standardization science and technology and the quality of standardization workers, promote the healthy development of standardization in engineering construction, and contribute to the realization of the "two centenary goals" and building my country into a prosperous, strong, democratic, culturally advanced, harmonious, and beautiful socialist modernized country.

    On July 11, 2022, the national standard "GB/T 13477.21 Experimental Methods for Building Sealing Materials Part 21: Determination of Color Change after Artificially Accelerated Weathering" edited by Guangzhou BAIYUN Chemical Industry Co., Ltd. was officially announced.     "Test methods for building sealing materials - Part 21: Determination of color change after artificially accelerated weathering"     In order to achieve the design effect of buildings, architects have more and more demand for colored sealants, but there are many kinds of colorants used in colored sealants, and the color of some sealants will age with the weather (ultraviolet, heat, moisture, etc.) Fading and discoloration will not only cause huge material and labor losses, but also adversely affect the use of the construction project, the final delivery time and the reputation of the construction unit.     This standard unifies the method for determining the color change of sealants under accelerated conditions, allowing owners to detect the risk of fading or discoloration of sealants in advance. Unify the detection method for the color stability of sealants, providing a reliable basis for architects to select sealants and evaluate the color stability of sealants; at the same time, it provides guidance for the product development of sealant manufacturers, and provides products for sealant color filler suppliers. Development provides guidance.     As a leading enterprise in the domestic silicone sealant industry, BAIYUN has been committed to the promotion of industry standardization. So far, BAIYUN has participated in the drafting and revision of more than 220 international, national and industry standards, including 80 national standards, covering all fields of the sealant industry, and is the vanguard of industry standardization. The successful release of "GB/T 13477.21" is another important measure of BAIYUN's contribution to the standardization of the sealant industry. It will also bring more effective standardization guarantees to the sealant industry and better promote the high-quality development of the industry. 01 Standards-driven to lead the industry's progress Why so much emphasis on standardization?     From the long history of industrial development, standards are the technical support for economic activities and social development, and an important means to drive industrial upgrading. Taking the silicone sealant industry as an example, in 1994, the first domestic standard GB/T14683-1993 "Silicon The official implementation of "Building Sealant" put forward mandatory standardization requirements for the mixed sealant market at that time, and also laid the foundation for a series of subsequent standards. The industry can get rid of the chaotic start-up state and quickly enter a new stage of development. On this basis, it begins to seek a two-way improvement of technical strength and innovation ability, and promotes the steady progress of the industry with healthy competition.     Today, China's silicone sealant industry has grown into one of the prides of Chinese manufacturing. Its products can not only compete with mature foreign sealant products on the same stage, but also sell well at home and abroad, serving as a large number of urban landmarks and even national landmarks. Provide quality solutions. 02 Leading the way in standards and promoting the high-quality development of the industry     Entering a new era, high-quality development has become the only way for my country's economic and social transformation and upgrading. The arrival of the silicon-based era also means that China's silicone sealant industry, as an important part of the national strategic emerging industry and it must shoulder a higher mission: it is imperative to promote the high-quality development of the industry with standardization and promote the upgrading of the industrial structure.