Preparation method of graphene oxide-silicon nitride composite powder/urushiol formal composite coating
A technology of urushiol formal and composite powder, applied in anti-corrosion coatings, coatings, etc., can solve the problems of poor film-forming properties of urushiol formal, and achieve the effects of excellent anti-corrosion performance, high hardness and strong adhesion
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Embodiment 1
[0025] A graphene oxide-silicon nitride composite powder / urushiol formal composite coating, the preparation of which comprises the steps of:
[0026] 1) Add urushiol xylene solution, formaldehyde solution, ammonia water and tetrabutylammonium chloride with a mass fraction of 38wt% in a three-necked flask with a mass ratio of 100:10:1:2, mix well and then heat up to 95 ℃, heat preservation reaction for 2 hours, then continue to heat up to 150 ℃, heat preservation and stirring reaction until a certain viscosity is reached, then stop the reaction to obtain urushiol formal solution;
[0027] 2) Mix absolute ethanol, distilled water, and silane coupling agent KH-560 at a mass ratio of 18:0.5:2, then add 1wt% graphene oxide to the feed liquid, disperse evenly with ultrasonic waves, and keep warm at 80°C Stir for 6h, centrifuge, wash, vacuum dry, grind to obtain nanoscale modified graphene oxide (KGO);
[0028] 3) Mix absolute ethanol, distilled water, and silane coupling agent KH-5...
Embodiment 2
[0038] A graphene oxide-silicon nitride composite powder / urushiol formal composite coating, the preparation of which comprises the steps of:
[0039] 1) Add urushiol xylene solution, formaldehyde solution, ammonia water, and tetrabutylammonium chloride with a mass fraction of 38wt% in a three-necked flask at a mass ratio of 100:10:1:2, mix well and then heat up to 95 ℃, heat preservation reaction for 2 hours, then continue to heat up to 150 ℃, heat preservation and stirring reaction until a certain viscosity is reached, then stop the reaction to obtain urushiol formal solution;
[0040] 2) Mix absolute ethanol, distilled water, and silane coupling agent KH-560 at a mass ratio of 18:0.5:2, then add 1wt% graphene oxide to the feed liquid, disperse evenly with ultrasonic waves, and keep warm at 80°C Stirring for 6h, centrifuging, washing, vacuum drying, and grinding to obtain nanoscale modified graphene oxide;
[0041] 3) Mix absolute ethanol, distilled water, and silane couplin...
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