急救！！ ASPEN自己怎么会偷吃物料? 你的运行结果一点问题都没有。 *** no warnings were issued during input translation *** *** no errors or warnings were issued during simulation *** 要不是你在搞笑，要不是你看不懂报告。 查看更多
PTFE 聚四氟乙烯 性能指标？ 经过努力，我找到相关材料了。 ptfe detailed properties (polytetrafluoroethylene) the table below lists a generally accepted summary of properties that we believe to be reliable. please note that many of these resins are produced in several varieties and property characteristics may vary. therefore, determination of resin is dependent on the application and this table is only meant to serve as a general guideline. properties astm or unit ptfe mechanical properties specific gravity d792 2.18 elongation % d638 200~450 tensile strength (psi) d638 2,000~4,500 flexural strength (psi) d790 no break compressive strength（psi） d695 3,500（24mpa） tensile elastic modulus (young's modulus) (psi) d638 57,000 (psi) flexural modulus 103mpa (103kgf/cm2) d790 71,000~ 85,000 d790 0.5-0.6 (5.0-6.0) flexlife (mit cycles) d2176 1,000,000 hardness durometer shore d d636 d50~65 coefficient of friction on steel 0.02 abrasion resistance 1000 revs. taber 12 impact strength izod 73°f/23°c, notched ft/lbs/in d256 3 thermal properties melting point °c (°f) 327 (621) upper service temperature(20,000h) °c (°f) 260 (500) flame rating** ul 94 v-0 thermal conductivity btu/hr/ft2/deg f in 1.7 cal/sec/cm2,ºc/cm 6 x 10-4 linear coefficient of thermal expansion 10-5 °c d696 11.6 heat of fusion btu/lb 29-37 heat of combustion btu/lb 2200 low temperature embrittlement °c (°f) -268 (-450) electrical properties dielectric constant d150/103hz 2.1 d150/106hz 2.1 dielectric strength 10 mil film d149 1400 volume resistivity ohm-cm d257 1018 surface resistivity ohm/sq. d257 1017 general properties chemical/solvent resistance d543 excellent water absorption, 24h % 95 95 properties astm or unit ptfe *6.8 mpa (986 psi),24h **13.7 mpa (1987 psi),24h查看更多
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