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【英文标准名称】:StandardClassificationSystemforPoly(MethylMethacrylate)(PMMA)MoldingandExtrusionCompounds
【原文标准名称】:聚甲基丙烯酸酯(PMMA)模制和挤压化合物的标准分类系统
【标准号】:ASTMD788-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:(Classification)
【标准水平】:()
【中文主题词】:丙烯酸酯;化合物;挤压;异丁烯酸酯;模制材料;塑料
【英文主题词】:acrylic;acrylicplastic;acrylicresins;clearweatherableplastics;linecallout;plastic;plasticmaterials;PMMA;poly(methylmethacrylate);recycled;transparentplastics
【摘要】:1.1ThepurposeofthisclassificationsystemistoprovideamethodofadequatelyidentifyingPMMAmaterialsusingasystemconsistentwiththatofClassificationSystemD4000.Itfurtherprovidesameansforspecifyingthesematerialsbytheuseofasimplelinecalloutdesignation.1.2Thisclassificationsystemcoverspoly(methylmethacrylate)moldingandextrusioncompounds.Thesecompoundsarepolymersbasedonmethylmethacrylate,andatleast70%ofthepolymershallbepolymerizedfrommethylmethacrylate.1.3Thepropertiesinthisclassificationsystemarethoserequiredtoidentifythecompositionscovered.Theremaybeotherrequirementsnecessarytoidentifyparticularcharacteristicsimportanttospecificapplications.TheseshallbedescribedbyusingthesuffixesasgiveninSection5.1.4Acrylicmoldingandextrusioncompoundsareusedfrequentlyinapplicationswhereextremeclarityandtheabilitytoretainthatclarityandcolorundersevereweatheringandotherenvironmentalexposuresareofprimarysignificance.Whilethetestspecimenpropertiesofthisdocumentmaybeusedtoevaluatenonvirginmaterials,theusershouldtakeprecautionstoensurethatpartsmadefromthesematerialsmeetthedesiredend-userequirements.Accordingly,thisspecificationallowsfortheuseofthoseacrylicplasticmaterialsthatcanberecycled,reconstituted,andregroundedprovidedthefollowing:1.4.1Therequirementsasstatedinthisspecificationaremet,1.4.2Thematerialhasnotbeenmodifiedinanywaytoalteritsconformancetofoodcontactregulationsorsimilarrequirements,and1.4.3Therequirementsoftheparticularend-useapplicationaremet.1.5Thisclassificationsystemandsubsequentlinecallout(specification)arenotintendedfortheselectionofmaterials,butonlyasameanstocalloutplasticmaterialstobeusedforthemanufactureofparts.Theselectionofthesematerialsistobemadebypersonnelwithexpertiseintheplasticsfieldinwhichtheenvironment,inherentpropertiesofthematerials,performanceoftheparts,partdesign,manufacturingprocess,andeconomicsareconsidered.Note1-ThisclassificationsystemissimilartoISO8257-1:1987intitleonly.Thetechnicalcontentissignificantlydifferent.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_140_99
【页数】:6P.;A4
【正文语种】: