▎ 摘　　要

NOVELTY - A graphene modified bismaleimide resin composite material preparing method involves filtering, washing and drying mixture of acylated graphene and diamine or polyamine to obtain a surface with active amino graphene. 1 weight parts of the graphene and 1-1000 weight parts of organic solvent are mixed and stirred. Amination of the graphene is dispersed in the solvent. 1-1000 weight parts of bismaleimide is added to solution at 25-100 degrees C and vacuumized for 100 hours to remove the solvent. The mixture is heated for performing addition reaction to a resin base to obtain a composite material. USE - Method for preparing a graphene modified bismaleimide resin composite material. Uses include but are not limited to aerospace, automobile ship, transport and communication trade fields and electronic and civil fields. ADVANTAGE - The method enables utilizing aminated strength and toughness of the graphene bismaleimide, improving a plane with bonding strength of matrix resin and performanceof the graphene modified bismaleimide resin nano composite material and ensuring convenient graphite alkene in industrial application. DETAILED DESCRIPTION - A graphene modified bismaleimide resin composite material preparing method involves mixing 1 weight part of dry graphene and 10-1000 weight parts of inorganic acids in 1-100 kHz ultrasonic or 10x 106 revolution/minute, and stirred for 1-100 hours. The mixture is heated at 30-120 degrees C, reacted for 1-100 hours and filtered by a micro-filtration membrane. The mixture is repeatedly washed till a filtrate is neutral and dried in vacuum for 48 hours at 45-200 degrees C to obtain a purified graphite alkene. 1 weight part of the graphite alkene and 10-1000 weight parts of strong oxidizing acid are mixed in 1-100 kHz ultrasonic for 1 minute-100 hours, heated at 30-100 degrees C and stirred for 0.5-100 hours. The mixture is filtered by a microporous filtering film and repeatedly washed till the filtrate is neutral. The mixture is dried at 30-200 degrees C in vacuum for 48 hours to obtain graphene. 1 weight part of the graphite and 1-200 weight parts of an acylating agent are mixed in 1-100 kHz ultrasonic for 0.5-10 hours, heated at 40-200 degrees C and stirred for 0.5-120 hours. The mixture is filtered and repeatedly washed to remove an acylating reagent to obtain acylated graphene. 1 weight part of the acylated graphene and 1-1000 weight parts of diamine or polyamine are mixed for 1-100 kHz ultrasonic for 1 minutes-100 hours and reacted for 1-100 hours at 45-200 degrees C. The mixture is filtered and repeatedly washed for 48 hours at 200 degrees C and dried for 0.5-48 hours in vacuum to obtain a surface with active amino graphene. 1 weight parts of the amino graphene and 1-1000 weight parts of organic solvent are mixed and stirred in 1-120 kHz ultrasonic for 10x 106 revolution/minute and 1 minute-100 hours. Amination of the graphene is uniformly dispersed in the organic solvent. 1-1000 weight parts of bismaleimide is added to solution at 25-100 degrees C and vacuumized 100 hours to remove the organic solvent. The mixture is heated for performing addition reaction to a resin base to obtain a graphene modified bismaleimide resin nano composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical representation of a graphene modified bismaleimide resin composite material preparation method.'(Drawing includes non-English language text)'