Tri(isopropoxy)vinylsilane CAS 18023-33-1

Application：

A kind of wear-resistant coating: its raw materials include by weight: 20-30 parts of vinyl triisopropoxysilane, 3-5 parts of silica aerogel, 15-20 parts of trioxane, 5 parts of water -9 parts, acetic anhydride 3-7 parts, acetylcholine 10-15 parts, polyoxyethylene sorbitan monoglyceride 0.1-0.3 parts, crystalline silicon oxide 10-15 parts, graphite powder 7-13 parts; among them, two The porosity of silica aerogel is 75-79%, and the weight ratio of silica aerogel to vinyl triisopropoxysilane is 1: (5-7). By adding vinyl triisopropoxysilane for hydrolysis, a large amount of SiOH is formed, and then dehydrated to form a highly cross-linked hard network similar to silica, which has good wear resistance and has organic groups directly connected to Si. The presence of silica aerogels can significantly increase the flexibility of the coating, reduce stress cracking, and improve the bonding strength between the coating and the substrate. By adding silica aerogel and reasonably controlling its porosity, on the one hand, the viscosity of the coating can be increased. As a result, a thicker film layer can be obtained. On the other hand, since the added sol is an inorganic substance, the wear resistance of the film layer can be increased. By reasonably controlling the properties of silica aerogel and vinyl triisopropoxysilane, The ratio is within a certain range, which can significantly increase the friction resistance of the paint. Using trioxane as a solvent can not only increase the leveling and surface uniformity of the coating, but also form an intermixed layer with the substrate surface. , increase the adhesion with the substrate. By adding water and mixing it with trioxane, the amount of trioxane can be reduced and the cost can be reduced. Using acetic anhydride as the hydrolysis catalyst can better ensure the stability of the entire paint system. The pH is weakly acidic. Acetylcholine can effectively reduce the curing temperature of the coating and meet the requirements for the use of optical plastics with lower heat distortion temperatures. By controlling the ratio of acetic anhydride and acetylcholine, the curing time of the paint can be shortened, and the curing energy consumption and Cost, increase the cross-linking degree of the coating, improve the scratch resistance strength of the coating, use polyoxyethylene sorbitan monoglyceride as a leveling agent, which also has the effect of a lubricant, I reduce the friction coefficient of the coating, Significantly increases the scratch resistance of the coating. Crystalline silica and graphite powder have better friction resistance. By controlling the ratio of the two, the friction resistance of the paint is greatly increased.