Fluorine-containing silane coupling agent and preparation method thereof

Abstract

The invention relates to the technical field of silane coupling agents, in particular to a fluorine-containing silane coupling agent and a preparation method thereof. A formula of the fluorine-containing silane coupling agent comprises the following components in percentage by weight: 98-99 percent of silane coupling agent, 0.001-0.09 percent of fluorine surfactant and 0.01-1.91 percent of catalyst. A liquid prescription of the fluorine-containing silane coupling agent comprises the following components in percentage by weight: 0.5 percent of silane coupling agent, 0.01 percent of fluorine surfactant and 99.49 percent of water. Compared with the prior art, as the adopted fluorine surfactant is resistant to acid, base and high temperature, and the surface tension of a water solution of the fluorine-containing silane coupling agent is generally lower than 20mN / m, the invention can avoid molecular aggregation in a hydrating solution of the silane coupling agent, increase the stability and the permeability of inorganic materials, promote the homogeneity of the silane coupling agent due to low surface tension and further reduce the using amount.

Description

Technical field [0001] The invention relates to the technical field of silane coupling agents, specifically a fluorine-containing silane coupling agent and a manufacturing method. Background technique [0002] As we all know, silane coupling agent is obtained by the addition of silicochloroform and unsaturated olefins with reactive genes under the catalysis of platinum chloro acid, and then alcoholysis. The existing products are KH550, KH560, KH792, DL602, DL171 and other models. , Silane coupling agent is a kind of silane with organic functional groups, in its molecule it has both reactive groups that can chemically bond with inorganic materials and reactive groups that can chemically bond with organic materials. [0003] The existing general sulfane coupling agents need to be hydrolyzed before they can be applied to the surface treatment of inorganic materials, but the Si-OH functional groups produced by the silane coupling agent after hydrolysis are easy to attract each other an...

AI Technical Summary

Problems solved by technology

[0003] The existing general silane coupling agents need to be hydrolyzed before they can be applied to the surface treatment of inorganic materials, but the Si-OH functional groups produced by the hydrolyzed silane coupling agents are easy to attract each other and cause molecular aggregation .It is not conducive to the surface treatment of inorganic materials, especially for some fabrics such as glass fiber cloth. Because the molecules become larger, it is difficult to penetrate into the gap between warp and weft yarns, thus reducing the effect of silane coupling agent and even causing so-called physical properties. Adsorption, which reduces the strength of the organic / inorganic interface