▎ 摘　　要

NOVELTY - Composite material comprises 2-200 pts. wt. cyanuric chloride modified graphene, 1000 pts. wt. polyurethane and 1-50 pts. wt. flame retardant reinforcing agent. USE - The composite material is useful in preparing leather finishing agent (claimed). ADVANTAGE - The material has better flame-retardant properties, 18-23% increased limiting oxygen index, and V2 level upgraded flame retardant grade. DETAILED DESCRIPTION - Independent claims are also included for: (1) preparing composite material, comprising controlling temperature at 80-110 degrees C, mixing cyanuric chloride modified graphene, polyurethane, and flame retardant enhancer for 0.5-1 hours to obtain finished product; and (2) use method of composite material, comprising adding composite material to leather finishing agent.