▎ 摘　　要

NOVELTY - A graphene/steel composite material preparing method involves adding polyvinyl pyrrolidone solution, and graphene solution with water, heating to obtain polyethylene alkyl ketone graphene solution. 50g graphene is added to water, graphene solution in ultrasonic crushing machine. Polyvinyl pyrrolidone and pinot polyethylene alkyl ketone solution are mixed to form a graphene/pinot polyethylene alkyl ketone mixed slurry followed by sintering, removing steel surface coating of polyethylene alkyl ketone, vacuum sintering, laminating graphene steel material and hot rolling. USE - Method for preparing graphene/steel composite material that is utilized in automotive anticollsion case, high-speed railway, ships, tanks, aircraft and other fields. ADVANTAGE - The method enables preparing composite material in simple, easy and cost effective manner. DETAILED DESCRIPTION - A graphene/steel composite material preparing method involves adding 80g polyvinyl pyrrolidone solution, and graphene solution with 920ml distilled water, heating at 100 degrees C with mechanical stirring to obtain polyethylene alkyl ketone graphene solution. 50g graphene is added to 950 ml distilled water, graphene solution in ultrasonic crushing machine for 40 minutes. Polyvinyl pyrrolidone and pinot polyethylene alkyl ketone solution are uniformly mixed to form a graphene/pinot polyethylene alkyl ketone mixed slurry. The steel material is subjected to a surface activation treatment, graphene/pinot polyethylene alkyl ketone mixed slurry sprayed on the steel, a lower surface with coating thickness of 100-120 mu m followed by vacuum sintering, removing steel surface coating of polyethylene alkyl ketone, vacuum sintering at 500 degrees C to obtain graphene steel materials, laminating graphene steel material and lower sides together, and hot rolling at a temperature of 1000 degrees C to obtain product.