Ultra-high molecular weight polyethylene fiber (UHMWPE fiber), also known as high-strength PE fiber, is also known as the three high-performance fibers in the world together with carbon fiber and aramid fiber. UHMWPE fiber has a high degree of orientation and crystallinity, its tensile strength can reach 3. 1GPa and its modulus can reach 100GPa, but its density is only 0.97g? Cm, and has excellent impact resistance, chemical corrosion resistance, wear resistance, bending resistance, light resistance, cutting resistance and good insulation performance, which plays an important role in safety protection, aerospace, national defense and military industry and other important departments. However, due to the smooth surface and monomethylidene structure, the fiber surface has no reactive sites and can not form a good interface with the resin matrix, which seriously limits the application of UHMWPE fiber in resin matrix composites. In addition, UHMWPE fiber has poor heat resistance, exceeding 100? C, the performance is obviously reduced, so that it cannot be used, which limits its application in some special fields.