【英文标准名称】:Energeticmaterialsfordefense-Safety,vulnerability-Vacumtestwithmercurytube.
【原文标准名称】:国防用高能材料.安全性、易损性.水银管真空试验
【标准号】:NFT70-531-2003
【标准状态】:现行
【国别】:法国
【发布日期】:2003-05-01
【实施或试行日期】:2003-05-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:G89
【国际标准分类号】:71_100_30
【页数】:13P;A4
【正文语种】:其他


【英文标准名称】:Textileglassreinforcedplastics-Determinationofvoidcontent-Lossonignition,mechanicaldisintegrationandstatisticalcountingmethods
【原文标准名称】:纺织玻璃纤维增强的塑料.空隙量的测定.灼烧损失、机械粉碎和统计计数法
【标准号】:BSENISO7822-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-09-15
【实施或试行日期】:1999-09-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;数量密度;玻璃纤维增强塑料;气孔;玻璃织物;塑料;测定
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesthreemethodsforthedeterminationofthevoidcontentoftextileglassreinforcedplasticsorcomposites,ofwhichtheconstituentsareofasolidnature.1MethodA—LossonignitionThismethodisapplicabletocompositesforwhichtheeffectsofthelossonignitiontestonthematerialsareknown.Mostmatrixresinsandtextileglassfibrereinforcementsfallintothisclass.Themethodisnotapplicabletocompositesforwhichtheef-fectsofthelossonignitiontestontheresin,thereinforcement,andanyfillersareunknown.Thismayincludesiliconeresins,whichdonotbumoffcompletely,andfillersconsistingofox-ides,carbonates,etc.,whichmaygainorloseweight.Notethatseparateweightlosstestsonindividualmaterialswillusually,butnotnecessarily,givethesameresultaswhenallthematerialsarecombined.Theaccuracyofthemethodis±2,5%byvolume.2MethodB—MechanicaldieintegrationThismethodisapplicableifthecompositecanbedisintegratedinsuchaway,forexamplebycrushinginapress,thatalltheenclosedvoidsareconnectedwiththeoutsideofthecom-positematerial.Themethodisdestructiveandhaslimitedap-plicationifthematrixmaterialshowsductilebehaviourundercompression,unlessitcanbemademorebrittleinanartificialway(forexamplebycooling).Themethodisespeciallysuitablewhenthedensitiesofthecon-stituentmaterialsarenotknownornotdeterminable.Themethodneglectstheinfluenceofanyvolatileconstituentsthatcouldevaporateduringandafterdisintegration.Inthisconnection,theconditioningshallbechosenwithcare.Themethodalsodoesnottakeintoaccountanycutorexposedvoidsatthesurfaceofthesample.Theaccuracyofthemethodis±1%byvolume.3MethodC—StatisticalcountingThismethodisapplicabletocompositeshavingavoidcontentlessthanorequalto1%byvolume.
【中国标准分类号】:Q23
【国际标准分类号】:13_220_40;83_120
【页数】:16P;A4
【正文语种】:英语