Habitat UHMWPE wear plastic crown, and over some of the metal UHMWPE plate size, compared with other engineering plastics, UHMWPE wear index of mortar PA66 is only 1/5 of UHMWPE board wholesale, HEPE and PVC 1/10; UHMWPE compared with metal plates, carbon steel 1/7, 1/27 brass. Such a high wear resistance, so experiment with the general wear plastic difficult to test their degree of wear, which designed a mortar wear test device. UHMWPE wear resistance is proportional to the molecular weight, the higher the molecular weight, the better the wear resistance. Low water absorption. UHMWPE water absorption is very low, it is almost non-absorbent, does not swell in water, much less absorbent than nylon. Thermal properties. Determined by ASTM (load 4.6kg / cm2) method, heat distortion temperature of 85 ℃, at a smaller load, temperature up to 90 ℃, in exceptional circumstances, allowing the use at higher temperatures due to super high molecular weight polyethylene is an excellent toughness of the material, and so its performance is very excellent in low-resistance, low temperature at -269 ℃, still has some ductility, but no signs of embrittlement. Electrical properties. UHMWPE over a wide temperature range, has very excellent electrical properties, its volume resistivity of 10-18CM, the breakdown voltage of 50KV / mm, a dielectric constant of 2.3. Over a wide temperature and frequency range, its electrical properties change little. In the heat temperature range, it is suitable for use as structural materials in electrical engineering and mill material.