【英文标准名称】:StandardTestMethodforVolumeNonvolatileMatterinClearorPigmentedCoatings
【原文标准名称】:透明或着色涂层中不挥发物体积的标准试验方法
【标准号】:ASTMD2697-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:volumenonvolatilecontent;Nonvolatilemattercontent--paints/relatedcoatings/materials;Coatings(paint/relatedapplications);Latexpaints;Pigmentedcoatings;Solventbornepaints/coatings;Volumenonvolatilecontent
【摘要】:Thistestmethodisintendedtoprovideameasureofthevolumeofdrycoatingobtainablefromagivenvolumeofliquidcoating.Thisvalueisusefulforcomparingthecoverage(squarefeetofsurfacecoveredataspecifieddryfilmthicknessperunitvolume)obtainablewithdifferentcoatingproducts.Forvariousreasonsthevalueobtainedmaynotbeequaltothatpredictedfromsimpleadditivityoftheweightsandvolumesoftherawmaterialsinaformulation.Onereasonisthatthevolumeoccupiedbyasolutionofresininsolventmaybethesame,greater,orlessthanthetotalvolumeoftheseparateingredients:suchcontractionorexpansioninresinsolutionsisgovernedbyanumberoffactors,oneofwhichistheextentanddirectionofspreadbetweensolubilityparametersoftheresinandsolvent.Thespatialconfigurationofthepigmentparticlesandthedegreetowhichthespacesbetweenthepigmentparticlesarefilledwiththebinderalsoaffectthevolumeofadrycoatingformulation.Abovethecriticalpigmentvolumeconcentration,theapparentvolumeofthedryfilmissignificantlygreaterthantheoreticalduetotheincreaseinunfilledvoidsbetweenpigmentparticles.Theuseofvolumenonvolatilemattervaluesinsuchinstancesshouldbecarefullyconsideredastheincreasedvolumeislargelyduetoairtrappedinthesevoids.1.1Thistestmethodisbelievedtobeapplicabletothedeterminationofthevolumeofnonvolatilematterofavarietyofcoatings.Aninterlaboratorystudytoestablishtheprecisionofthistestmethodincludedawater-reducibleexteriorlatexpaintandthreeautomotivecoatingsthatincludedasolvent-reducibleprimersurfacer,waterreducibleprimersurfacer,waterreducibleenameltopcoat,andacrylicdispersionlacquertopcoat.Earliercollaborativestudiesincludedaglossenamel,aflatwallpaint,aglosshouseenamel,anindustrialbakingenamel,aninteriorlatexpaint,andanexteriorlatexpaint.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G50
【国际标准分类号】:87_040
【页数】:3P.;A4
【正文语种】:英语