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【英文标准名称】:StandardSpecificationforUltra-High-Molecular-WeightPolyethyleneMoldingandExtrusionMaterials
【原文标准名称】:超高分子量聚乙烯模压和挤压材料的标准规范
【标准号】:ASTMD4020-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.15
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:塑料;挤压;聚乙烯;静压铸件;分子量;挤压成型
【英文主题词】:extrusionmaterials;moldingmaterials;plastics;polyethylene;ultra-high-molecular-weight;UHMW-PE;viscosity
【摘要】:1.1Thisspecificationprovidesfortheidentificationofvirgin,unmodifiedhomopolymerultra-high-molecular-weightpolyethylene(UHMW-PE)plasticsmoldingandextrusionmaterials.Thisidentificationismadeinsuchamannerthatthesellerandpurchasercanagreeontheacceptabilityofdifferentcommerciallotsorshipments.1.2Itisnotintendedtodifferentiatebetweenvariousmolecularweightgradesofultra-high-molecular-weightpolyethylenecommerciallyavailable.1.3Itisnotthefunctionofthisspecificationtoprovidespecificengineeringdatafordesignpurposes.1.4Ultra-high-molecular-weightpolyethylenes,asdefinedinthisspecification,arethoselinearpolymersofethylenewhichhavearelativeviscosityof1.44orgreater,inaccordancewiththetestproceduresdescribedherein.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.6Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion.Section,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoISOequivalentspecification.However,inISO11542-1,arangeofviscositynumbersdefinestheviscosityofUHMW-PEgrades.TheviscositynumbersaredeterminedinaccordancewithISO1628-3.
【中国标准分类号】:G32
【国际标准分类号】:83_140_99
【页数】:13P.;A4
【正文语种】: