▎ 摘　　要

NOVELTY - Nanocomposite material comprises 0.1-25 parts by weight (pbw) of graphene or graphene derivative, 60-100 pbw of polytetrafluoroethylene (PTFE) and 0-30 pbw of glass fiber. USE - The nanocomposite material is useful in the fields of mechanical seal and lubrication. ADVANTAGE - The nanocomposite material has high specific surface area, surface energy and activity DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing nanocomposite material, comprises taking component and then dispersing in a high speed mixer after mixing according to the ratio, and mold pressing and sintering.