An efficient and controllable method for surface modification of inorganic particles based on dealcoholization in non-aqueous systems

Abstract

The invention discloses an efficient and controllable method for surface modification of inorganic particles based on the dealcoholization reaction of a non-aqueous system. Using inorganic oxide particles, silane coupling agent, reaction medium and reaction auxiliary agent as raw materials, the raw materials are firstly dehydrated treatment; then add silane coupling agent and reaction aid to the uniform dispersion of inorganic oxide particles to form a reaction system; then, under the protection of nitrogen gas, place the reaction system in an oil bath, and heat the reaction under stirring conditions 6 ~36h; the mixed solution obtained from the reaction is purified and dried to obtain modified inorganic oxide particles. The invention can greatly increase the grafting rate of the silane coupling agent on the surface of the inorganic oxide particles, and has strong controllability. By using different modified substrates and / or changing the reaction conditions, it is possible to effectively control the grafting rate of different functional silane coupling agents on the surface of inorganic particles, such as octadecanetrimethoxysilane grafted on the surface of nano-silica Rate can be 0~9.5 / nm 2 control within the range.

Description

An efficient and controllable method for surface modification of inorganic particles based on non-aqueous system dealcoholization reaction technical field The invention belongs to functional material technical field, relate to inorganic material modification technology, relate in particular to based on non-aqueous system An efficient and controllable method for surface modification of inorganic particles by dealcoholization reaction. Background technique [0002] Inorganic nanoparticles have attracted extensive attention due to their special physical and chemical properties, and are widely used in advanced manufacturing, biotechnology It has shown unique properties in the fields of technology, medicine and chemical industry, daily necessities, etc., especially its surface is treated with specific structural design. After chemical modification, it can not only greatly improve its own performance, but also superimpose the advantages of the modifier with the modifier, so as...

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to provide an efficient and controllable method for surface modification of inorganic particles to solve the problems of low and uncontrollable surface grafting rate in traditional inorganic particle surface modification methods

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