▎ 摘　　要

NOVELTY - Preparing graphene-alumina fiber composite material involves coating graphene on the surface of the alumina fiber, connecting alumina fiber surface and the graphene sheet by van der waals force and hydrogen bonding. The alumina fibers are cross-linked by graphene coated on the surface to form a twistless yarn, non-woven fabric or chopped strand mat. USE - Method for preparing graphene-alumina fiber composite material. ADVANTAGE - The method enables to prepare graphene-alumina fiber composite material which enhances the interaction between the alumina fiber, reduces the contact resistance between the fibers makes the alumina fiber, exhibits excellent mechanical property and conductivity, and has great research value and wide application prospect.