▎ 摘　　要

NOVELTY - Preparation of material comprises immersing glass fiber in oxidizing solution, ultrasonic processing for 20-60 minutes, taking out, soaking in silane couple agent-dimethyl sulfoxide solution for 5-10 minutes, and vacuum drying for 4-8 hours at 50-60 degrees C; immersing in 0.3-1.2 mg/mL graphene oxide solution, heating to 40-50 degrees C for 1-2 hours, taking out, and vacuum drying at 50-60 degrees C for 4-8 hours; carrying out three-dimensional weaving; and molding, adding composite resin, and carrying out injection molding forming. USE - Method for preparing material used for electric vehicle battery box body (claimed). ADVANTAGE - The material has easy forming process, low production cost, high mechanical performance and conducting efficiency, and good flame-retardant performance.