超高分子量聚乙烯板材板的性能及属性（Properties and properties of ultra high molecular weight polyethylene sheet）.doc

超高分子量聚乙烯板材板的性能及属性（Properties and properties of ultra high molecular weight polyethylene sheet） 1, mechanical properties Index name index unit test method The density of g/cm3 ASTM1505 0.94 The fracture strength of MPa D638 42 Elongation% D638 350 Charpy notched impact strength of Kj/m2 D256 = 100 2. thermal properties: Index name index measurement unit The melting point of 136 DEG ASTMD2117 VEKA softening point 134 C ASTMD1512 The thermal expansion coefficient of 10-4/ 1.5 C ASTMD648 Heat deformation temperature of 90 C ASTMD648 (4.6kg/cm2) Electrical properties: Index name index unit test method The volume resistivity of ASTMD257 1017 ohm cm. The surface resistance coefficient ASTMD257 1013 ohm The dielectric strength of kV / mm ASTMD149 900 The dielectric coefficient of the 106 Hz ASTMD150 2.3 Cold tolerance The molecular weight of more than 500 thousand high density polyethylene, brittle temperature to -140 deg. C. Ultra high molecular weight polyethylene can even in liquid nitrogen or helium under the influence, the use of temperature can reach below -269 DEG C, there is still a certain mechanical strength. Wear resistance The wear resistance of UHMWPE is excellent, the higher the molecular weight, the better wear resistance of the material. High contrast with other material wear parameters UHME-PE PTFE PA66 45# POM material stainless steel yellow steel The wear rate average of 0.74 2.31 1.51 3.1 4.02 4.05 16.74 Note: wear test performance: Sand / water =3/2 (important) with 16 ~24 mesh / between construction sand specimens, 800 rpm, test piece as 60mm * 40MM * 3mm, each specimen was worn for 7 hours. Ultra high molecular weight polyethylene wear rate The name of the product molecular weight average wear rate Ultra high molecular weight polyethylene 5 million 700 thousand 0.30 4 million 0.41 3 million 800 thousand 0.45 2 million 800 thousand 0.50 1 million 600 thousand 0.74 6. impact strength UHMWPE HDPE ABS PA66 PC POM material PTEE impact strength Kj/m2 = 1002