Since 2025, the insulating glass adhesive industry has shown development characteristics of "accelerated technological iteration, highlighted regional characteristics, and improved service system" under the multiple effects of technological research and development breakthroughs, differentiated regional market services, and collaborative empowerment of industry associations. As a core material in the field of building sealing, the industry is adapting to diverse scene demands through technological innovation, while relying on association resources to strengthen industry collaboration and provide more accurate material solutions for building energy conservation and green construction.
Technological innovation focuses on performance optimization and scene adaptation. Industry enterprises continue to promote technological research and product iteration around the core performance and segmented scenario requirements of insulating glass adhesive. In terms of improving weather resistance, the "New Anti UV Silicone Adhesive" developed by Guangzhou Baiyun Chemical and South China University of Technology introduces a composite system of nano level antioxidant and UV absorber. After 10000 hours of xenon lamp aging test, the tensile strength retention rate reaches over 85% and the fracture elongation retention rate exceeds 80%. This product has been applied to the curtain wall project of Atlantis Hotel Phase II in Sanya, Hainan, and is suitable for tropical high temperature and high UV environment; In the field of low-temperature flexibility improvement, Shandong Baolong Silicon Materials has developed the "ultra-low temperature butyl rubber". By adjusting the molecular weight distribution of polyisobutene and the ratio of plasticizers, it can still maintain good elasticity in a low temperature environment of -45 ℃, with a compression permanent deformation rate of less than 15%. It has been supplied in bulk to construction projects in cold regions of the three northeastern provinces; In response to the demand for efficient construction of prefabricated buildings, Hangzhou Zhijiang Organic Silicon has launched the "Rapid Curing Two Component Silicone Adhesive", which can shorten the curing time to 24 hours in standard environments (traditional products require more than 48 hours), and has stable mechanical properties after curing. The usage rate in prefabricated building projects in the Yangtze River Delta will increase by 40% year-on-year in the first half of 2025.
The regional market has formed a distinctive development pattern. The climate conditions and building demands in different regions have driven the differentiated development trend of the insulating glass adhesive market. In the Yangtze River Delta region, due to the high humidity during the rainy season, there is a strong demand for "mold proof insulating glass adhesive". A mold proof product developed by a certain enterprise in Shanghai has passed the GB/T 1741-2021 standard test and achieved a mold proof level of 0 (no mold growth) in an environment with a temperature of 28 ℃ and a humidity of 95%. In the first half of 2025, the sales proportion of civil construction projects in this region exceeded 35%; The Pearl River Delta region focuses on "high-temperature resistant products". The silicone adhesive product of a certain enterprise in Guangdong can be used for a long time at a high temperature of 80 ℃, with a thermal weight loss rate of less than 3%. It is suitable for the high temperature weather in the Pearl River Delta in summer, and the penetration rate in local commercial complex curtain wall projects will reach 50% by 2025; In combination with the characteristics of mountainous buildings, the Chengdu Chongqing region promotes the use of "high bonding strength hollow glass adhesive". The product has a bonding strength of over 1.2MPa for glass and aluminum profiles, which is suitable for the complex stress requirements of mountainous building curtain walls. By 2025, its usage in mountainous residential projects in Chongqing, Chengdu and other places will increase by 38% year-on-year.
Industry associations strengthen collaborative services and standard guidance. As the core organization of the industry, the China Association of Building Glass and Industrial Glass has carried out multiple collaborative services in the field of insulating glass adhesive since 2025. In terms of standard construction, the group standard "Technical Requirements for Anti mold Sealing Adhesive for Hollow Glass" led by the association has been officially released, clarifying key indicators such as anti mold grade and testing methods, filling the gap in industry anti mold product standards. Currently, 23 companies' products have passed the certification of this standard; At the level of technical exchange, the association will hold a "Hollow Glass Adhesive Technology Innovation Seminar" in Suzhou in May 2025, attracting more than 60 enterprises and research institutions to participate. The seminar will focus on topics such as low VOC formulas and intelligent construction technology, and promote the implementation of five industry university research cooperation projects; In terms of market regulation, the association has collaborated with third-party testing institutions to carry out the "Quality Evaluation of Hollow Glass Adhesive Products" activity, testing the VOCs emissions, weather resistance and other indicators of mainstream brands in the market, and releasing evaluation reports to the society to help downstream enterprises and consumers accurately select types. In the first half of 2025, 42 brands have participated in the evaluation, covering over 70% of the market share.
Expanding application scenarios drives industry demand growth. In addition to the traditional construction field, the application of insulating glass adhesive in emerging scenarios continues to expand: in the field of photovoltaic building integration (BIPV), the "high transparency butyl adhesive" that meets the demand for transparency has achieved breakthroughs in application, with a product transmittance of over 92% and excellent UV resistance. In the first half of 2025, the amount of BIPV modules used in enterprises such as Longi and Jinko exceeded 8000 tons; In the field of cold chain logistics, the demand for "low thermal conductivity hollow glass adhesive" is increasing. A certain enterprise's product has a thermal conductivity as low as 0.18W/(m · K), which is suitable for low-temperature scenarios such as cold storage and cold chain vehicles. In the first half of 2025, its usage in domestic cold chain projects increased by 45% year-on-year; In the field of old building renovation, the association has collaborated with local housing and construction departments to promote the use of "special hollow glass adhesive for old window renovation". The product has good compatibility with the original sealant and improves construction convenience. In the first half of 2025, the usage in the renovation projects of old urban communities nationwide exceeded 12000 tons.
Industry experts point out that the insulating glass adhesive industry has entered a new stage of development characterized by precise technological adaptation, regional characteristic services, and collaborative empowerment by associations. With the continuous advancement of technological innovation and the continuous expansion of application scenarios, the industry will further focus on three directions: "segmented scenario product research and development, regional market deep services, and industry collaboration mechanism improvement", promoting the transformation of hollow glass adhesive products from "universal" to "customized", and providing more professional material support for the high-quality development of the construction industry.
