When using glass fibers or mineral-reinforced organic polymers, the interface or interface phase between the polymer and the inorganic material involves complex interactions between many physical and chemical factors. These factors are related to adhesion, physical strength, expansion coefficient, concentration gradient, and product performance retention. An important destructive force that affects adhesion is the migration of water to inorganically enhanced hydrophilic surfaces. Water erodes the interface and breaks the bond.
"True" coupling agents can form water-resistant bonds at the interface between inorganic and organic materials. The silane coupling agent has unique chemical and physical properties, which not only enhances the bonding strength, but more importantly, prevents the bond disintegration at the interface during the aging and use of the composite material. Coupling agents provide stable bonding between two dissimilar, difficult-to-bond surfaces.
The silane coupling agent can not only be used as an elastic bridging agent between the substrates, that is, to improve the adhesion between two materials with different chemical properties, and to achieve the comprehensive performance of mechanical, electrical insulation, anti-aging and hydrophobic properties of the product. ; Can also be used as a material surface modifier, to impart waterproof, antistatic, mildew, deodorant, anticoagulant, and physiological inertia properties; can also be used as a cross-linking curing agent for non-cross-linked polymer systems to achieve Cured at room temperature and pressure. In composite materials, the selection of appropriate silane can increase the bending strength of composite materials by more than 40%. Silane coupling agents also increase the bonding strength between the coating and the adhesive, while increasing resistance to humidity and other harsh environmental conditions. .