ANSI/ASTM D4020-2001 超高分子量聚乙烯模压和挤压材料规范(08.02)

作者:标准资料网 时间:2024-05-21 03:02:46  浏览:8757   来源:标准资料网

【英文标准名称】:SpecificationforUltra-High-Molecular-WeightPolyethyleneMoldingandExtrusionMaterials(08.02)
【原文标准名称】:超高分子量聚乙烯模压和挤压材料规范(08.02)
【标准号】:ANSI/ASTMD4020-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:聚乙烯;挤压;塑料
【英文主题词】:plastics;extruding;polyethylene
【摘要】:Thisspecificationprovidesfortheidentificationofvirgin,unmodifiedhomopolymerultra-high-molecular-weightpolyethylene(UHMW-PE)plasticsmoldingandextrusionmaterials.Thisidentificationismadeinsuchamannerthatthesellerandpurchasercanagreeontheacceptabilityofdifferentcommerciallotsorshipments.Itisnotintendedtodifferentiatebetweenvariousmolecularweightgradesofultra-high-molecular-weightpolyethylenecommerciallyavailable.Itisnotthefunctionofthisspecificationtoprovidespecificengineeringdatafordesignpurposes.Ultra-high-molecular-weightpolyethylenes,asdefinedinthisspecification,arethoselinearpolymersofethylenewhichhavearelativeviscosityof1.44orgreater,inaccordancewiththetestproceduresdescribedherein.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion.Section,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1-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】:
【正文语种】:英语