In which fields are silane coupling agents used

The general formula for silane coupling agent is R n SiX (4-n), where R is a non hydrolytic organic functional group that can bind to high molecular weight polymers. According to the different properties of polymer, R should have strong affinity or reactivity with polymer molecules, such as methyl, vinyl, amino, epoxy, thiol, acryloyloxypropyl, etc. X is a hydrolyzable group that can decompose when exposed to water in aqueous solutions, air, or adsorbed on inorganic surfaces, and has good reactivity with inorganic surfaces.

  1. Silane coupling agent for surface treatment of glass fibers:Improve the bonding performance between glass fiber and resin, significantly enhancing the strength, electrical, water resistance, weather resistance, and other properties of glass fiber reinforced composite materials. Even in the wet state, its effect on improving the mechanical properties of composite materials is significant.

2. Silane coupling agent used for filling plastics with inorganic fillers:Inorganic fillers can be treated first or directly added to the resin during use. Its function is to improve the dispersibility and adhesion of fillers in thermosetting and thermoplastic resins, enhance process performance, and improve the mechanical, electrical, and weather resistance properties of filled plastics (including rubber).

3. Silane coupling agents are used as thickening agents for sealants, adhesives, and coatingsSilane coupling agents are widely used as adhesives, sealants, and other thickening agents. Adding silane coupling agents to adhesives can not only improve the bonding strength, but also enhance the durability and resistance to moisture and heat aging of the adhesive.

Silane coupling agents can even be directly used as adhesives for bonding silicone rubber, fluororubber, nitrile rubber, and other metals. Used in coatings, it can improve the adhesion under wet conditions, corrosion resistance, environmental aging resistance, pigment dispersibility, wear resistance, and promote resin cross-linking.