▎ 摘　　要

NOVELTY - Preparation of graphene oxide toughening bismaleimide resin composition comprises preparing graphene oxide water solution at 0-50 degrees C, performing ultrasonic treatment on graphene oxide and deionized water to obtain graphene oxide aqueous solution, preparing tertiary amine group-containing bismaleimide resin modifier, mixing toughening agent and bismaleimide resin at 50-200 degrees C, melt processing for 20-150 minutes, mixing graphene oxide aqueous solution and tertiary amine group-containing bismaleimide resin at 25-100 degrees C, evaporating and distilling or freeze drying. USE - Method of preparing graphene oxide toughening bismaleimide resin composition (claimed). ADVANTAGE - The method overcomes uneven dispersion problems, does not need physical and chemical modification, has simple preparation and low cost and is easy to operate and conducive to industrial application. DETAILED DESCRIPTION - Preparation of graphene oxide toughening bismaleimide resin composition comprises preparing graphene oxide water solution at 0-50 degrees C, performing ultrasonic treatment on graphene oxide and deionized water to obtain graphene oxide aqueous solution, preparing tertiary amine group-containing bismaleimide resin modifier, mixing toughening agent and bismaleimide resin at 50-200 degrees C, melt processing for 20-150 minutes, mixing graphene oxide aqueous solution and tertiary amine group-containing bismaleimide resin at 25-100 degrees C, evaporating and distilling or freeze drying to remove water. The toughening agent is glycidyl ether type epoxy resin, novolac epoxy resin, allyl compound or cyanic resin. The mass ratio of toughening agent and modified bismaleimide resin is 1. The mass ratio of graphene oxide and tertiary amine group-containing bismaleimide resin is 0.0001-0.3.