▎ 摘　　要

NOVELTY - The preparation method of modified graphite and PTFE composite solid lubricating coating involves (1) adding graphene to functionalized solvent, stirring, placing in microwave oven and obtaining surface functionalized graphene, the functionalized solvent is aqueous ammonia, p-aminobenzenesulfonic acid, sulfamic acid, aminopyrine or aminobutyric acid, (2) preparing PTFE emulsion by mixing Teflon (RTM: PTFE), surface functionalized graphene and deionized water, evenly coating PTFE emulsion on surface of metal product, heating and cooling. USE - Preparation of modified graphite and PTFE composite solid lubricating coating (claimed). ADVANTAGE - The method enables preparation of modified graphite and PTFE composite solid lubricating coating with enhanced lubricating property, low friction coefficient, high thermal stability and increased adhesion performance. DETAILED DESCRIPTION - The preparation method of modified graphite and PTFE composite solid lubricating coating involves (1) adding graphene to functionalized solvent, stirring the mixture at room temperature for 1-5 minutes, placing in microwave oven for 1-20 minutes and obtaining surface functionalized graphene, the functionalized solvent is aqueous ammonia, p-aminobenzenesulfonic acid, sulfamic acid, aminopyrine or aminobutyric acid, (2) preparing PTFE emulsion by mixing Teflon (RTM: PTFE), surface functionalized graphene and deionized water at mass ratio of (50-60):(0.1-10):(40-50), evenly coating PTFE emulsion on the surface of metal product, heating the coated metal product at 350-400 degrees C and cooling.