【英文标准名称】:TestMethodforDeterminationoftheLinearCoefficientofThermalExpansionofPlasticLumberandPlasticLumberShapesbetween-30oand140oF(-34.4oand60oC)
【原文标准名称】:在-30o到140oF(-34.4oand60oC)之间测定塑料废物和塑料废旧成形物热膨胀线性系数的方法
【标准号】:ANSI/ASTMD6341-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【实施或试行日期】:1999-02-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:塑料件;;试验
【英文主题词】:testing;thermalexpansioncoefficient;partsmadeofplastic
【摘要】:Thistestmethodcoversthedeterminationofthecoefficientoflinearthermalexpansionforplasticlumberandplasticlumbershapestotwosignificantfigures.Thedeterminationismadebytakingmeasurementswithacaliperatthreediscretetemperatures.Atthetesttemperaturesandunderthestressesimposed,theplasticlumbershallhaveanegligiblecreeporelasticstrainrate,orboth,insofarasthesepropertieswouldsignificantlyaffecttheaccuracyofthemeasurements.1.1.1Thistestmethoddetailsthedeterminationofthelinearcoefficientofthermalexpansionofplasticlumberandplasticlumbershapesintheir"asmanufactured"form.Assuch,thisisatestmethodforevaluatingthepropertiesofplasticlumberorshapesasaproductandnotamaterialpropertytestmethod.Thethermalexpansionofplasticlumberandshapesiscomposedofareversiblecomponentonwhichmaybesuperimposedchangesinlengthduetochangesinmoisturecontent,curing,lossofplasticizerorsolvents,releaseofstresses,phasechanges,voids,inclusions,andotherfactors.Thistestmethodisintendedtodeterminethecoefficientoflinearthermalexpansionundertheexclusionofnon-linearfactorsasfaraspossible.Ingeneral,itwillnotbepossibletoexcludetheeffectofthesefactorscompletely.Forthisreason,thetestmethodcanbeexpectedtogiveareasonableapproximationbutnotnecessarilyprecisedeterminationofthelinearcoefficientofthermalexpansion.Plasticlumberandplasticlumbershapesarecurrentlymadepredominatelywithrecycledplasticswheretheproductisnon-homogeneousinthecross-section.However,thistestmethodmayalsobeapplicabletosimilarmanufacturedplasticproductsmadefromvirginresinsorotherplasticcompositematerials.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIunitsgiveninbracketsareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:17_040_99;83_140_99
【页数】:
【正文语种】:英语