High-scratch-resistance abrasion-resistant coating material and preparation method thereof
A coating material and wear-resistant technology, applied in coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve problems such as brittleness, hardness and easy cracking, high cross-linking density of coatings, and poor scratch resistance, so as to improve elasticity Effects of resilience, avoidance of scratch damage, and failure damage
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Embodiment 1
[0062] Add 1 g of graphene oxide into 500 mL of N,N dimethylformamide solvent, stir and disperse at 60°C for 2 hours. The uniformly dispersed mixed solution was transferred to a 1000 mL three-necked flask equipped with a mechanical stirrer, a reflux condenser, and a constant pressure dropping funnel. Add 2.4 g of hexadecyl isocyanate into the reaction solution, and mechanically stir at 60° C. for 24 hours to obtain a modified graphene dispersion. The product was then isolated by suction filtration and washed 3 times with acetone / deionized water respectively. The product was dried at 60°C for 12 hours to obtain modified graphene.
Embodiment 2
[0064] Add 1 g of graphene oxide into 25 mL of dimethyl succinate and 25 mL of dimethyl glutarate solvent, and disperse with solvent heating in a pressure reactor at 160° C. for 2 hours. The uniformly dispersed mixed solution was transferred to a 1000 mL three-necked flask equipped with a mechanical stirrer, a reflux condenser, and a constant pressure dropping funnel. Add 4 g of cetyl isocyanate into the reaction solution, reflux and stir at 100° C. for 12 hours, then add 5 g of hydrazine hydrate and continue the reaction for 12 hours to obtain a modified graphene dispersion. The product was then isolated by suction filtration and washed 3 times with acetone / deionized water respectively. The product was dried at 60°C for 12 hours to obtain modified graphene.
Embodiment 3
[0066] Add 1g of graphene oxide into 50mL of water, 50mL of ethanol, 50mL of acetone, and 50mL of butyl acetate mixed solvent, add 1g of ammonia water, 0.3g of dispersant (BKY190), and ultrasonically disperse at room temperature for 0.5 hours. The uniformly dispersed mixed solution was transferred to a 1000 mL three-necked flask equipped with a mechanical stirrer, a reflux condenser, and a constant pressure dropping funnel. Add 2 g of methacrylic acid, 2 g of vinyl sulfonic acid, and 0.2 g of potassium persulfate into the reaction solution, reflux and stir at 90°C for 24 hours, then add 0.1 g of sodium borohydride and continue the reaction for 12 hours to obtain a modified graphene dispersion . The product was then isolated by suction filtration and washed 3 times with acetone / deionized water respectively. The product was dried at room temperature for 48 hours to obtain modified graphene.
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