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【英文标准名称】:StandardTestMethodforHidingPowerofPaintsbyReflectometry
【原文标准名称】:反射计法测试涂料遮盖力的标准测试方法
【标准号】:ASTMD2805-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D01.26
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:对比度;散射系数;传播率;传播应用;材料外观
【英文主题词】:contrastratio;scatteringcoefficient;spreadingrate;Spreadingapplication;Appearanceofmaterials
【摘要】:Thisisapreciseinstrumentalmethodgivingresultshavinganabsolutephysicalsignificancewithoutreferencetoacomparisonpaint.Itshouldbeusedwhenmaximumprecisionandminimumsubjectivityarerequired,asintestingspecificationcoatingsorevaluatingthehidingefficiencyofpigments.HidingpowerTestMethodD344isvisualinsteadofinstrumental,andgivesresultsthatarerelativetoamaterialstandardinsteadofabsolute.ItislessprecisethanTestMethodD2805butmorecloselyalignedwithpracticalpaintingprocedures.1.1Thistestmethodcoversthedetermination,withoutreferencetoamaterialpaintstandard,ofthehidingpowerofairdrycoatingswithYtristimulusvaluesgreaterthan15%.Withappropriatemodification,itcanalsobeusedtotestbakingfinishes.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:87_040
【页数】:6P.;A4
【正文语种】: