A kind of preparation method of graphene oxide-silicon nitride composite powder/urushiol formal composite coating
A urushiol formal and composite powder technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of poor film-forming properties of urushi 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 following steps:
[0026] 1) adding the urushiol xylene solution, formaldehyde solution, ammoniacal liquor and tetrabutylammonium chloride with a mass fraction of 38wt% into the three-necked flask in a mass ratio of 100:10:1:2, and then heating up to 95% after mixing evenly. ℃, heat preservation reaction for 2h, 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 anhydrous ethanol, distilled water, and silane coupling agent KH-560 in a mass ratio of 18:0.5:2, then add 1wt% graphene oxide to the feed solution, disperse evenly by ultrasonic, and then keep at 80°C Stir for 6h, centrifuge, wash, vacuum dry and grind to obtain nanoscale modified graphene oxide (KGO);
[0028] 3) Mix anhydrous ethanol, distilled water, a...
Embodiment 2
[0038] A graphene oxide-silicon nitride composite powder / urushiol formal composite coating, the preparation of which comprises the following steps:
[0039] 1) adding the urushiol xylene solution, formaldehyde solution, ammoniacal liquor and tetrabutylammonium chloride with a mass fraction of 38wt% into the three-necked flask in a mass ratio of 100:10:1:2, and then heating up to 95% after mixing evenly. ℃, heat preservation reaction for 2h, 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 anhydrous ethanol, distilled water, and silane coupling agent KH-560 in a mass ratio of 18:0.5:2, then add 1wt% graphene oxide to the feed solution, disperse evenly by ultrasonic, and then heat at 80°C Stir for 6h, centrifuge, wash, vacuum dry and grind to obtain nanoscale modified graphene oxide;
[0041] 3) Mix anhydrous ethanol, distilled water, and sil...
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