▎ 摘　　要

NOVELTY - Economical and practical polyurethane graphene bottom surface coating comprises 100 pts. wt. polyurethanes, 10-25 pts. wt. curing agent, 0.2-2 pts. wt. modified graphene oxide and 0.5-1 pts. wt. nano aluminum oxide. USE - Polyurethane graphene bottom-in-one coating for prolonging service life of bad working condition in a surface protective coating for preventing seawater corrosion. ADVANTAGE - The polyurethane graphene integrated coating has excellent corrosion resistance, good weather resistance, and prolongs the service life of bad working condition. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of economic and practical polyurethane graphene bottom-surface coating.