【英文标准名称】:StandardPracticeforSeparationofContaminantsinPolymersUsinganExtruderFilterTest
【原文标准名称】:用挤压机滤膜试验对聚合物内污染物分离的标准操作规程
【标准号】:ASTMD6265-1998(2003)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D20.95
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:回收塑料;挤压机滤膜试验;聚烯烃;污染
【英文主题词】:contamination;extruderfiltrationtest;polyolefins;recycledplastics
【摘要】:Presenceofpaper,metal,gels,incompatiblepolymer,orotherextraneouscontaminationinpolymers,includingrecycledpolymers,maycauseproblemswithextrusionandsubsequentprocessingofthematerial.Thisprocedureisusefulforseparatinggrosscontaminantsfrompolymers.Forexample,theprocedureisusefulfordeterminingthequalityofresinstobeusedinfiberapplications.Ifdesired,theisolatedcontaminantsmaybesubsequentlyidentifiedbytheappropriatevisualorinstrumentalprocedures.1.1Thispracticecoversameanstoseparatetheunmoltenparticles,gels,andimpuritiescontaminatingapolymersample.Theproceduremaybeusedtoremovegelsandincompatiblematerialsthatmaycauseimperfectionsinthefinalextrudedproduct.Underpressure,mostgelswillbreakupordeformandpassthroughawiremeshfilter,howeverhighmolecularweightgelsmaynotbreakupordeform.1.2Ifdesired,materialsisolatedonawiremeshfiltercansubsequentlybeidentifiedbyspectroscopicorotheranalyticalmeans.Note18212;Althoughnotpresentedasaquantitativemethod,theprocedurepresentedinthispracticemaybeusedtoprovidequantitativeresultsatthediscretionoftheuser.Theuserassumestheresponsibilitytoverifythereproducibilityofquantitativeresults.Detectionlimitdependsonthemeshsizeofthefilterscreen,buttheprocedureisgenerallyapplicabletotheseparationofimmisciblecontaminantspresentatconcentrationsgreaterthan0.1%.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardsstatements,seeSection8.Note28212ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_020
【页数】:4P.;A4
【正文语种】: