Product Code:SAE AMS3628
Title:Plastic Extrusions and Moldings, Polycarbonate, General Purpose
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers a polycarbonate resin in the form of extrusions and moldings. These products have been used typically for mechanical parts requiring high impact strength from -55 to +135 degrees C (-65 to +275 degrees F), clarity, high strength, and dimensional stability, but usage is not limited to such applications. These products are sensitive to some solvents; each application must be evaluated on its own merits.【英文标准名称】:StandardPracticeforDeterminingVolatileOrganicCompound(VOC)ContentofPaintsandRelatedCoatings
【原文标准名称】:涂料及相关涂层中挥发性有机化合物含量测定的标准实施规范
【标准号】:ASTMD3960-2005
【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】:D01.21
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:工艺;颜色;挥发物测定;覆层;测定;涂料;涂漆
【英文主题词】:testprecision;VOC;VOCcalculations;VOCcontent;VOCcontentofpaint
【摘要】:ThispracticediscussesapplicableASTMtestmethodsusedinthedeterminationoftheVOCcontentofpaintsandrelatedcoatingsandprovidesequationsforcalculatingtheVOCcontentexpressedasthemassofVOC:(1)perunitvolumeofcoatinglesswaterandexemptvolatilecompounds,and(2)perunitvolumeofcoatingsolidsand(3)perunitmassofcoatingsolids.VolatileorganiccompoundcontentisusedtocomparetheamountofVOCreleasedfromdifferentcoatingsusedforthesameapplication,thatis,tocoatthesameareatothesamedryfilmthickness(assumingthesameapplicationefficiency).VOCcontentdataarerequiredbyvariousregulatoryagencies.OnlytheexpressionofVOCcontentasafunctionofthevolumeofcoatingsolidsgivesalinearmeasureofthedifferenceinVOCreleasedfromdifferentcoatingsusedforthesameapplication.Note48212;Thusassumingthesametransferefficiency,acoatingwithVOCcontentof3lbofVOC/galofsolidswouldreleasex00BD;theVOCthatwouldacoatingwith6lbofVOC/galofsolids.WhenVOCcontentisexpressedasafunctionofthevolumeofcoatinglesswaterandexemptsolvents,thevaluesobtaineddonotaccountfordifferencesinthevolumesolidscontentofthecoatingsbeingcompared:thisexpression,therefore,doesnotprovidealinearmeasureofthedifferenceinVOCemittedfromdifferentcoatingsusedforthesameapplication.Note58212;Thus,acoatingwithVOCcontentof3lbofVOC/gallesswaterandexemptvolatilecompoundswouldreleaseabout85%lessVOCthanacoatingwith6lbofVOC/gallesswaterandexemptvolatilecompounds.1.1Thispracticemeasuresthevolatileorganiccompound(VOC)contentofsolventborneandwaterbornepaintsandrelatedcoatingsasdeterminedfromthequantityofmaterialreleasedfromasampleunderspecifiedbakeconditionsandsubtractingexemptvolatilecompoundsandwaterifpresent.Note18212;Theregulatorydefinition,underthecontroloftheU.S.EPA,canchange.Toensurecurrency,contactthelocalairpollutioncontrolagency.1.2ThispracticeprovidesaguidetotheselectionofappropriateASTMtestmethodsforthedeterminationofVOCcontent.1.3CertainorganiccompoundsthatmaybereleasedunderthespecifiedbakeconditionsarenotcountedtowardcoatingVOCcontentbecausetheydonotparticipateappreciablyinatmosphericphotochemicalreactions.Suchnegligiblyphotochemicallyreactivecompoundsarereferredto,asexemptvolatilecompoundsinthispractice.Note28212;InformationontheUSEPAdefinitionofVOCandalistofthecurrentUSEPAapprovedexemptvolatilecompoundswhichhavebeenusedincoatings,areprovidedin.1.4VOCcontentiscalculatedasafunctionof(1)thevolumeofcoatinglesswaterandexemptvolatilecompounds,and(2)thevolumeofcoatingsolids,and(3)theweightofcoatingsolids.1.5ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:
【页数】:6P.;A4
【正文语种】: