▎ 摘　　要

NOVELTY - A high-conductivity and high-toughness benzoxazine composite material comprises 70-90 pts. wt. benzoxazine monomer, 1-20 pts. wt. conductive filler, 1-10 pts. wt. inorganic filler, 0.1-10 pts. wt. coupling agent, 0.02-5 pts. wt. catalyst, and balance solvent. The benzoxazine intermediate molecule is bisphenol A/aniline type benzoxazine monomer, bisphenol F/aniline type benzoxazine monomer, bisphenol A/propylene amine type benzoxazine monomer, phenolphthalein/allylamine type benzoxazine monomer, bisphenol F/allylamine type benzoxazine monomer, and/or bisphenol A/biphenylamine benzoxazine monomer. USE - High-conductivity and high-toughness benzoxazine composite material. ADVANTAGE - The composite material has improved conductivity and toughness, simple preparation method, and improved production efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the composite material comprising adding conductive filler and coupling agent into solvent, ultrasonically dispersing for 30-60 minutes at room temperature, and magnetically stirring for 1-3 hours, adding benzoxazine monomer, continuously magnetic stirring for 1-3 hours, continuously adding inorganic filler, magnetically stirring for 2-3 hours, and slowly adding catalyst; rotating and evaporating to remove the solvent and vacuum drying at 60-130 degrees C; and pouring the mixed solution into a 100-120 degrees C mold for curing and forming at 150 degrees C for 6 hours, 160 degrees C for 4 hours, and 180 degrees C for 2 hours, heating with benzoxazine monomer under the action of catalyst, ring-opening crosslinking polymeriziing, forming composite material, curing, cooling to room temperature, and demolding.