Surface modification method of silicon carbide micropowder
A silicon carbide micropowder and surface modification technology, which is applied in the field of silicon carbide micropowder processing, can solve the problems of poor particle dispersion, poor product stability, and long production cycle, and achieve uniform coating, improved dispersion performance, and production efficiency. high effect
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Embodiment 1
[0022] Embodiment 1, a kind of surface modification method of silicon carbide micropowder, its steps are as follows:
[0023] (1) Configure two modifier solutions: one is a silane coupling agent ethanol solution with a mass concentration of 5-30% obtained by mixing a silane coupling agent with ethanol;
[0024] Among them, the silane coupling agent is methyltriethoxysilane, vinyltriethoxysilane, N-(β-aminoethyl)-γ-aminopropyltrimethyl(ethyl)oxysilane, γ-(2, One or more of 3-glycidyloxy)propyltrimethoxysilane, 3-aminopropyltriethoxysilane, and γ-(methacryloyloxy)propyltrimethoxysilane;
[0025] The other is a water-soluble polymer aqueous solution with a mass concentration of 5-30% obtained by mixing a water-soluble polymer with water;
[0026] Wherein the water-soluble polymer is one or more of polyethylene glycol, polyacrylamide, polyacrylate, polyethyleneimine, carboxymethyl cellulose;
[0027] (2) Dry modification of silicon carbide micropowder: first preheat the silicon ...
Embodiment 2
[0028] Embodiment 2, in the surface modification method of the silicon carbide micropowder described in embodiment 1, the silane coupling agent described in step (1) is by the methyl triethyl ethyl that mass ratio is 1~3:1~3:1 Oxysilane, vinyltriethoxysilane and 3-aminopropyltriethoxysilane, preferably methyltriethoxysilane, vinyltriethoxysilane and 3-aminopropyltriethoxysilane The mass ratio of oxysilane is 2:2:1.
Embodiment 3
[0029] Example 3, in the surface modification method of silicon carbide micropowder described in Example 1, the silane coupling agent described in step (1) is composed of N-(β-aminoethyl with a mass ratio of 1:2~4 )-γ-aminopropyltrimethyl(ethyl)oxysilane and γ-(2,3-glycidoxy)propyltrimethoxysilane are mixed, preferably with a mass ratio of 1:3.
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