A silane coupling agent is a type of organosilicon compound that contains two different chemical groups in the molecule at the same time. Its classic product can be represented by the general formula YSiX3. In the formula, Y is a non-hydrolyzable group (also an organic group, which can be epoxy, methylacryloxy, mercapto, amino, alkyl, isocyanate, and vinyl), which can chemically react with polymers Or form a hydrogen bond to form a strong bond with the polymer; X is a hydrolyzable group (including Cl, Me-O-, Et-O-, i-Pr-O-, MeO-CH2CH2-O-, etc.), Reacts with hydroxyl-containing inorganic materials. Due to this special structure, silane coupling agents work at the interface of inorganic materials (such as glass, metal or minerals) and organic materials (such as organic polymers, coatings or adhesives), combining or coupling two completely different material. It can enhance the affinity between organic and inorganic compounds, and can enhance the physical and chemical properties of composite materials, such as strength, toughness, electrical properties, water resistance, and corrosion resistance.