Silane coupling agents play an important role in the preparation of composites from organic polymers and inorganic fillers such as glass, minerals, and metals. The general structure of silane coupling agents are (RO)₃-Si-R'-X, where X is an organofunctional group, R' is a small alkylene linkage, and RO is a hydrolyzable group such as an alkoxy group.
The organofunctional group and the alkoxy group can form strong bonds with the polymer matrix and with the filler particles, respectively.

HENGDA silane coupling agents cover Amino silane, Methacrylate silane, Epoxy silane, Vinyl silane, Mercapto silane, Alkyl silane, Ethyl Silicate, Chlorine silane, Isocyanate silane, Phenyl silane, Ureido silane and Sulfur silane.
They are widely used in glass fiber, electronics, wind power, coatings, adhesives, XLPE Electrical cables and hot water pipes, oilfield drilling, textiles, rubber and casting, etc. to improve the quality and performance of applied products.