【英文标准名称】:StandardTestMethodforRubberProperty&8212;DurometerHardness
【原文标准名称】:橡胶特性的标准试验方法.肖氏硬度
【标准号】:ASTMD2240-2005
【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】:D11.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:炭黑;硬度;天然橡胶;特性;橡胶;合成橡胶;测试
【英文主题词】:durometer;durometerhardness;hardness;indentationhardness;microdurometerhardness
【摘要】:Thistestmethodisbasedonthepenetrationofaspecifictypeofindentorwhenforcedintothematerialunderspecifiedconditions.Theindentationhardnessisinverselyrelatedtothepenetrationandisdependentontheelasticmodulusandviscoelasticbehaviorofthematerial.Thegeometryoftheindentorandtheappliedforceinfluencethemeasurementssuchthatnosimplerelationshipexistsbetweenthemeasurementsobtainedwithonetypeofdurometerandthoseobtainedwithanothertypeofdurometerorotherinstrumentsusedformeasuringhardness.Thistestmethodisanempiricaltestintendedprimarilyforcontrolpurposes.Nosimplerelationshipexistsbetweenindentationhardnessdeterminedbythistestmethodandanyfundamentalpropertyofthematerialtested.Forspecificationpurposes,itisrecommendedthatTestMethodD785beusedformaterialsotherthanthosedescribedin1.1.FIG.1(a)TypeAandCIndentorFIG.1(b)TypeBandDIndentor(continued)FIG.1(c)TypeO,DO,andOOIndentor(continued)FIG.1(d)TypeMIndentor(continued)FIG.1(e)TypeOOOIndentor(continued)FIG.1(f)TypeOOO-SIndentor(continued)FIG.1(g)TypeEIndentor(continued)1.1Thistestmethodcoverstwelvetypesofrubberhardnessmeasurementdevicesknownasdurometers:TypesA,B,C,D,DO,E,M,O,OO,OOO,OOO-S,andR.Theprocedurefordeterminingindentationhardnessofsubstancesclassifiedasthermoplasticelastomers,vulcanized(thermoset)rubber,elastomericmaterials,cellularmaterials,gel-likematerials,andsomeplasticsisalsodescribed.1.2Thistestmethodisnotequivalenttootherindentationhardnessmethodsandinstrumenttypes,specificallythosedescribedinTestMethodD1415.1.3Thistestmethodisnotapplicabletothetestingofcoatedfabrics.1.4Allmaterials,instruments,orequipmentusedforthedeterminationofmass,force,ordimensionshallhavetraceabilitytotheNationalInstituteforStandardsandTechnology,orotherinternationallyrecognizedorganizationsparallelinnature.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.ManyofthestateddimensionsinSIaredirectconversionsfromtheU.S.CustomarySystemtoaccommodatetheinstrumentation,practices,andproceduresthatexistedpriortotheMetricConversionActof1975.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:13P.;A4
【正文语种】: