超高分子量聚乙烯纤维（UHMWPE fiber）.doc

超高分子量聚乙烯纤维（UHMWPE fiber） Ultra high molecular weight polyethylene fiber.Txt Lao Tzu fooled the childs education, children Lao Tzu called flicker deception, flicker each other so that the generation gap. The man in this world, I want to use what color to attract you. Ultra high molecular weight polyethylene fiber (UHMWPE) is a high performance fiber after carbon fiber, aramid fiber of the third generation, with excellent mechanical properties. Only the density of aramid fiber 2/3 and high modulus carbon fiber 1/2, also has excellent impact resistance, good chemical resistance, excellent wear resistance and good electrical insulation etc.. So, UHMWPE fiber has been widely used in aerospace, military industry and other important sectors. Strength of UHMWPE fiber cone and several other fibers are shown in table 1. Table 1 Comparison of several kinds of high strength fiber properties Type UHMWPE fiber (SK66) aramid fiber (HM) carbon fiber (HM) E nylon 66 fiber (HT) density / (G? Cm-3) 0.971.441.852.551.14 tensile strength of /GPa3.12.72.32.00.9 toughness / (N? Tex-1) 3.21.91.20.80.8 tensile modulus /GPa10058390736 elongation, but due to UHMWPE% 3.53.71.52.020, the fiber axial high degree of orientation (more than 95%) and a high degree of crystallinity (greater than 99%), the surface is smooth, itself by simple methylene, make the fiber surface without any reaction, not with resin to form chemical bonding, the surface energy is low and not easy to be resin wetting, and rough surface to form a mechanical mesh point, such a serious limit in its application in composite material. In order to improve the UHMWPE fiber surface activity, to enhance the interface between fiber and resin strength, increase the scope of its application in composite materials, the need for UHMWPE fiber surface modification. 1 the importance of the composite interface In the composite resin, only plays the role of connection, fiber is force of the main body, and the interface between fiber and matri