The development speed of sealant in recent years

‍Sealant is a kind of adhesive used to fill configuration gap, in order to have sealing effect, with anti-leakage, moisture-proof, shock-proof and noise reduction, heat insulation and other effects, many types, widely used in various fields.‍

Sealant compound increase by 8% in the past ten years, create hundreds of billions of yuan "industrial monosodium glutamate" sales market. A wide range of varieties, wide range of use, both function and aesthetic. In 2019, adhesive and sealant market capacity totaled more than 100 billion, in which sealant share exceeded 60%. According to the statistical analysis of China Adhesives and adhesives Industry Association, in 2019, the total sales volume/total sales volume of the two major categories of adhesives (only with adhesive efficacy) and sealants (key joints, sealing efficacy) respectively reached 8.72 million tons / 111.9 billion yuan, an increase of 5.4%/8.9% compared to the same period. The CAGR from October to 19 years was 6.8%/7.8%. In 2019, the total sales volume of adhesives/sealants was RMB 43/71.6 billion respectively, with a share of 36%/64%. According to the "China Adhesive Tape and adhesives Market Report and the 13th Five-Year Plan", by the end of 2020, the total sales volume of adhesives in China will reach 132.8 billion yuan, and it is estimated that the new market capacity will be increased by about 20.9 billion yuan in 20 years.

Adhesive and sealant has "industrial monosodium glutamate" said, in which sealant refers to the shape of the sealing surface deformation, not easy to flow, there is a certain bonding of sealing raw materials, usually to leach, natural resin or synthetic resin, natural rubber or synthetic rubber and other dry or non-dry viscose as the base material. Sealant types, models and specifications are many, according to the polymer composition specification, sealant can be divided into silicone material class, polyurethane material class, ethylene oxide class, polysulfide class, acrylic sealant.

Among them, silicone sealant is widely used, and other types have their own strengths. Silicone sealant key refers to silicone, commodity aging resistance is excellent, mainly used in building curtain wall, hollow glass Windows and other engineering construction field, in recent years to increase the use of new energy technology, aerospace and medical equipment and other high-end fields. The modified material silicone structural adhesive has stronger cohesiveness and scratchability than the general silicone structural adhesive, and is suitable for the continuous volume of prefabricated construction market. Other sealant mainly includes polyurethane materials and silicone rubber, because of its acid and alkali corrosion resistance and no corrosion characteristics of the plate, it is suitable for engineering construction, road and automobile sealing field. Polysulfide and acrylic sealant has good environmental performance, taking into account good oil resistance and heat resistance, mainly used in the sealing needs of civil engineering and aerospace fields.