▎ 摘　　要

NOVELTY - A glass fiber/graphene-carbon nanotube/epoxy resin multi-dimensional hybrid composite material preparing method involves dispersing graphene and carbon nanotube to a dispersing solvent, and treating the dispersing solvent ultrasonically to form a stable suspension graphene-carbon nanotube. A dry graphene-carbon nanotube is weighed to mix with inorganic acid and processed. The mixture is heated to react, and vacuum-filtration is performed with a microfiltration membrane. Chemical cross linking reaction is performed to obtain epoxy resin polymer containing graphene-carbon nanotube. USE - Method for preparing a glass fiber/graphene-carbon nanotube/epoxy resin multi-dimensional hybrid composite material. Uses include but are not limited to an airspace field, traffic and transportation field, electronic industry, civil installation field, construction field and chemical field. ADVANTAGE - The method enables preparing glass fiber/graphene-carbon nanotube/epoxy resin multi-dimensional hybrid composite material using simple process with better electrical conductivity and thermal conductivity, at low cost and in environment-friendly manner. The composite material has wide application range. DETAILED DESCRIPTION - A glass fiber/graphene-carbon nanotube/epoxy resin multi-dimensional hybrid composite material preparing method involves dispersing 0.5 g of graphene and 0.5 g of carbon nanotube to 500 g of a dispersing solvent, and treating the dispersing solvent for 2 hour ultrasonically to form a stable suspension graphene-carbon nanotube. A dry graphene-carbon nanotube is weighed to mix with 3 g of inorganic acid and processed for 1-80 hour under agitation of 1-120 kHz ultrasonic wave. The mixture is heated to 20-180 degrees C to react for 1-48 hour, and vacuum-filtration is performed with a microfiltration membrane. Vacuum-drying is performed for 1-48 h at 25-150 degrees C to obtain purified graphenecarbon nanotube. 2 g of dry glass fiber is soaked in an aqueous solution of 5% of a silane coupling agent for 30 min. The glass fiber is taken out to place in an oven to roast for 2 hour, and water content on the glass fiber is removed to obtain glass fiber processed by silane coupling agent. The purified graphenecarbon nanotube is mixed with 4 mL of strong oxidizing acid and processed for 1-80 hour under 1-120 kHz of ultrasonic wave. The mixture is heated to 25-120 degrees C, agitated and refluxed to react for 1-80 hour. 2 g of acidified graphenecarbon nanotube is taken and processed for 1-100 hour under 1-100 kHz of ultrasonic wave. 1-100 g of aromatic anhydride compound is dripped in a polar organic solvent, and temperature is raised to 100-150 degrees C and refluxed for 312 hour. The unreacted aromatic anhydride compound is washed, and 2 g of graphenecarbon nanotube is placed on a surface of epoxy resin. The mixture is agitated and dispersed uniformly, and air bubbles are removed under vacuum condition. Chemical cross linking reaction is performed to obtain epoxy resin polymer containing graphene-carbon nanotube. 20-25 g of epoxy resin polymer containing graphene-carbon nanotube is taken as a substrate to mechanically mix with 20-100 g of glass fiber processed by the silane coupling agent at 60-100 degrees C. 40-50 g of organic anhydride curing agent is added, and a curing agent is poured into a mold. The air bubbles are removed under ultrasonic wave and cured and shaped at 100-250 degrees C to obtain glass fiber/graphene-carbon nanotube/ epoxy resin-containing multi-dimensional hybrid composite material.