【英文标准名称】:StandardTestMethodsforVoidContentofReinforcedPlastics
【原文标准名称】:增强塑料的空隙含量的标准试验方法
【标准号】:ASTMD2734-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D20.18
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:composites;ignitionloss;plastics;reinforcedplastics;voidcontent;weightfractions;Reinforcedthermosettingplastics(RTP);Voidcontent
【摘要】:Thevoidcontentofacompositemaysignificantlyaffectsomeofitsmechanicalproperties.Highervoidcontentsusuallymeanlowerfatigueresistance,greatersusceptibilitytowaterpenetrationandweathering,andincreasedvariationorscatterinstrengthproperties.Theknowledgeofvoidcontentisdesirableforestimationofqualityofcomposites.1.1Thesetestmethodscoverthevoidcontentofreinforcedplasticsorx201C;composites.x201D;Thetestmethodsareapplicabletocompositesforwhichtheeffectsofignitiononthematerialsareknown.Mostplastics,glass,andreinforcementsfallintothisclass.Thesetestmethodsarenotapplicabletocompositesforwhichtheeffectsofignitionontheplastics,thereinforcement,andanyfillersareunknown.Thisclassmayincludesiliconeresins,whichdonotburnoffcompletely,reinforcementsconsistingofmetals,organicmaterials,orinorganicmaterialswhichmaygainorloseweight,andfillersconsistingofoxides,carbonates,etc.,whichmaygainorloseweight.Notethatseparateweightlosstestsofindividualmaterialswillusually,butnotnecessarily,givethesameresultaswhenallthematerialsarecombined.Note18212;ThereisnoknownISOequivalenttothesetestmethods.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:83_120
【页数】:3P.;A4
【正文语种】:英语