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【英文标准名称】:StandardTestMethodforMeasuringSurfaceWaterAbsorptionofOverlaidWood-BasedPanels
【原文标准名称】:测量木质人造板的表面吸水率的标准试验方法
【标准号】:ASTMD7433-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:wood-basedpanels;waterabsorption;overlays;CobbRing
【摘要】:Waterabsorptivenessthroughthesurfaceofanoverlaidpanelisafunctionofvariouscharacteristicsoftheoverlayandsubstrate,includingoverlayresincontent,thicknessoftheoverlay,porosity,andpermeability.Thistestmethodisusefulincomparingthewaterabsorptioncharacteristicsofdifferentoverlaidpanelproducts.Theresultsfromthistestmethodareinfluencedbyboththeperformanceoftheoverlaysystemandthepanelsubstrate.Therefore,theresultsareappropriateforcomparisonoftherelativeperformanceofanoverlaysystemwhentestedoversimilarormatchedpanelsubstrates.Note18212;Panelattributesthatmayinfluencewaterabsorptioninclude,butarenotlimitedto,paneltype,woodspecies,faceveneerthicknessandgrade,preoverlaysurfacetreatmentsuchassanding,particlegeometryandcompactionratio.1.1Thistestmethodcoversthedeterminationofthequantityofwaterabsorbedinaspecifiedtimethroughthesurfaceofanoverlaidwood-basedpanel.Thetestmethodmeasurestherateofwaterweightgainwithinacontrolledsurfaceareaoftheoverlaidpanelsurfacewhenexposedtostandingwater.ThemethodwasadaptedfromtheprinciplesofTestMethodD5795.1.2Thistestmethodisapplicabletovariousoverlaidwood-basedpanelsincluding,butnotlimitedto,plywood(suchasMDOandHDOreferencedinPS1x2013;07),orientedstrandboard,mediumdensityfiberboard,particleboard,andhardboard.1.3Thistestmethoddoesnotaddresssamplingprocedures,numberofreplicationsnorperformancecriteriasincethosedetailsvarydependinguponthepurposeofthetestingandthetypeofproduct.Themethodisspecifictothepanelsurfaceanddoesnotevaluatewaterabsorptionoredgeswellthatmayoccuralongpaneledges.Themethoddoesnotconsiderthevariablesrelatedtoin-servicemoistureconditionsandthereforedoesnotclaimtodirectlyrelatetowaterabsorptionthatmayoccurinactualpanelusesituations.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B70
【国际标准分类号】:79_060_01
【页数】:3P.;A4
【正文语种】:英语