Kh570 structural formula

The structural formula of kh570 is (ch3o) 2ch3sich2ch2ch2si (och3) 2.

Silane coupling agent:

The molecular structural formula of silane coupling agent is generally Y-R-Si(OR)3 (where Y- organic functional group, SiOR- siloxane). Siloxane groups react with inorganic substances, and organic functional groups react or are compatible with organic substances. Therefore, when silane coupling agent is between inorganic and organic interfaces, a combined layer of organic matrix, silane coupling agent and inorganic matrix can be formed.

Silane coupling agent is the coupling agent with the largest variety, the largest dosage and the best effect at present. The general formula of silane coupling agent is ASiB3, in which A represents epoxy group, cyano group, mercapto group, vinyl group, methacryloyloxy group and other groups with strong reactivity with different matrix resins, and B represents hydrolyzable alkoxy group (such as methoxy group and ethoxy group).

When silane coupling agent is used, group B forms a siloxane bond with the surface of inorganic materials such as glass fiber, and group A is an organic group, which can react with resin to form a firm chemical bond. The brands of silane coupling agents from domestic manufacturers are kh792, kh602, kh570, kh560, kh550, A- 15 1, A- 17 1.

Silane coupling agent manufacturers are United Carbon Company of the United States, Dow Corning Company of the United States, Shinetsu Company of Japan and Wacker Chemical Company of Germany, and domestic manufacturers are Nanjing Qianjin Chemical Co., Ltd., Wuxi Coupling Agent Factory and Shenyang Pindao New Material Additives.

Modifier application

As a modifier, silane coupling agent KH-570 can organically modify TiO _ 2 through KH-570, so that the hydrophilicity of TiO _ 2 becomes hydrophobic, the lipophilicity is significantly increased, and the contact angle is increased by 65438+024.

Under acidic conditions, silane coupling agent KH-570 can be used as a surface modifier to modify the surface of nano-silica, and the coupling agent can chemically bond with the surface of nano-silica, forming a large steric hindrance, preventing nano-silica particles from agglomerating, effectively improving its compatibility with organic media and improving its dispersion stability in organic media.