Silicon carbide surface modifying method
A surface modification and silicon carbide technology, applied in the treatment of dyed polymer organic compounds, etc., can solve the problems of pollution, easy to fall off, easy to settle on the surface of silicon carbide, etc. Effect
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Embodiment 1
[0013] Place the silicon carbide powder in a muffle furnace at 500°C for 1 hour; after taking it out, soak it in a 1:1 mixed solution of hydrogen peroxide and concentrated sulfuric acid for 1 hour; after taking it out, rinse it with deionized water and dry it, and The coupling agent solution was reacted at 60°C for 1 hour. The coupling agent was the silane coupling agent KH550. After the reaction, the silicon carbide was put into the acetone solution, ultrasonically cleaned for 0.5 hours and centrifuged with a centrifuge, repeated twice; choose acrylic The weight percentage of the aqueous solution is 10%, the crosslinking agent is glycerol, the added amount is 0.01% of the acrylic monomer weight, and the pH is adjusted to 5 with sodium hydroxide; then the initiator is added, and the initiator is potassium persulfate. The amount is 0.01 of the weight of the acrylic monomer; the silicon carbide after centrifugation is uniformly mixed with the reaction solution and then polymerized. ...
Embodiment 2
[0015] Place the silicon carbide powder in a muffle furnace at 800℃ for 3 hours; after taking it out, soak it in a 1:2 mixed solution of hydrogen peroxide and concentrated sulfuric acid for 2 hours; after taking it out, rinse it with deionized water and dry it, and The coupling agent solution was reacted at 80°C for 2 hours, and the coupling agent was silane coupling agent KH560; after the reaction, the silicon carbide was put into the acetone solution, ultrasonically cleaned for 1 hour and centrifuged with a centrifuge, repeated 3 times; The weight percentage of the aqueous acrylic acid solution is 20%, the crosslinking agent is epichlorohydrin, the added amount is 0.15% of the weight of the acrylic acid monomer, and the pH value is adjusted to 7 with sodium hydroxide, sodium carbonate or sodium bicarbonate; then an initiator is added to initiate The agent is sodium persulfate, and the added amount is 0.05% of the weight of the acrylic monomer; the silicon carbide after centrifug...
Embodiment 3
[0017] In this method, the silicon carbide powder is first placed in a muffle furnace at 1500°C for 5 hours; after taking it out, it is soaked in a 1:3 mixed solution of hydrogen peroxide and concentrated sulfuric acid for 3 hours; after taking it out, it is washed with deionized water and dried. Then react with the coupling agent solution at 90°C for 3 hours, the coupling agent is silane coupling agent KH570; after the reaction, put the silicon carbide into the acetone solution, ultrasonically clean for 1.5 hours and centrifuge with a centrifuge, repeating 3 Second; select 25% by weight of the aqueous acrylic acid solution, the crosslinking agent is methylene bisacrylamide, the added amount is 0.05% of the acrylic monomer weight, and the pH value is adjusted to 7 with sodium hydroxide; then the initiator is added, the initiator is Ammonium persulfate is added in an amount of 0.07% of the weight of the acrylic monomer; the silicon carbide after centrifugation is uniformly mixed wi...
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