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【英文标准名称】:Flexiblecellularpolymericmaterials-Determinationofhardness(indentationtechnique)
【原文标准名称】:软质泡沫聚合物材料.硬度的测定(压痕技术)
【标准号】:BSENISO2439-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-01-31
【实施或试行日期】:2009-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:多孔材料;压缩永久变形;定义;泡沫橡胶;硬度;硬度测量;压痕方法;材料;材料试验;塑料;高聚物;试验
【英文主题词】:Cellularmaterials;Compressionset;Definition;Definitions;Foamedrubber;Hardness;Hardnessmeasurement;Indentationmethod;Materials;Materialstesting;Plastics;Polymers;Testing
【摘要】:Theindentationhardnessofflexiblecellularmaterialsisameasureoftheirload-bearingproperties.ThisInternationalStandardspecifiesfourmethods(AtoD)forthedeterminationofindentationhardnessandonemethod(E)fordeterminationofcompressivedeflectioncoefficientandhysteresislossrateofflexiblecellularmaterials.AnnexAprovidesasummaryoftestparametersandtypicalforce-indentationgraphsobtainedwiththesemethods.Thesefivemethodsareapplicableonlytolatexfoam,urethanefoamandPVCfoamoftheopen-celltype.Themethodsspecifiedcanbeusedfortestingfinishedarticlesandforthecharacterizationofbulkmaterial.ThisInternationalStandardspecifiesthefollowingmethods:a)MethodA—Determinationofthe40%/30sindentationhardnessindex,whichgivesasingleindentationmeasurementforlaboratorytestpurposes;b)MethodB—Determinationofthe25%-40%-65%/30sindentationhardnesscharacteristics,whichprovidesinformationabouttheshapeofthehardnessindentationcurve;c)MethodC—Determinationofthe40%indentationhardnesscheck,whichisaquickproceduresuitableforqualitycontroltesting;d)MethodD—Determinationofthe25%/20slowindentationhardnessindex,whichisaquickproceduresuitableasaninspectiontest;e)MethodE—Determinationofthecompressivedeflectioncoefficientandhysteresislossrate,whichgivesadditionalinformationabouttheload-bearingpropertiesofmaterials.Theresultsobtainedbythesemethodsrelateonlytothetestconditionsspecifiedandcannot,ingeneral,beuseddirectlyfordesignpurposes.
【中国标准分类号】:G31
【国际标准分类号】:83_100
【页数】:22P.;A4
【正文语种】:英语