▎ 摘　　要

NOVELTY - An ultra-high molecular weight polyethylene composition comprises silicon carbide, modified graphene and ultrahigh molecular weight polyethylene. The modified graphene is hyperbranched polyethylene grafted graphene through silane coupling agent. USE - Ultra-high molecular weight polyethylene composition used for high heat-resistant cutting fiber (claimed). ADVANTAGE - The ultra-high molecular weight polyethylene composition has high cutting performance and strong tensile strength. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) high heat-resistant cutting fiber; and (2) manufacture of high heat-resistant cutting fiber, which involves mixing modified graphene, silicon carbide and ultrahigh molecular weight polyethylene, high speed shearing and stirring by emulsifying machine to obtain spinning solution, spinning of spinning solution, extracting fibers and hot drawing.