基本信息
| 标准名称： | 冷冲模导向装置 滑动导套(A型) |
| 中标分类： |
机械 >>
工艺装备 >>
模具 |
| 发布日期： | 1984-12-24 |
| 实施日期： | 1985-07-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 2页 |
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所属分类： 机械 工艺装备 模具
【英文标准名称】:StandardTestMethodforTensilePropertiesofGlassFiberStrands,Yarns,andRovingsUsedinReinforcedPlastics
【原文标准名称】:增强塑料用玻璃纤维股,纱线和粗纱的抗拉特性的标准试验方法
【标准号】:ASTMD2343-2009
【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】:glassfibers;impregnatedglassstrands;reinforcedplastics;rovings;tensilestrength;yarns;Glass-fiber-reinforced(GRP)plastics;Impregnatedglassstrands;Reinforcedplastics;Roving;Tensileproperties/testing--plastics;Yarns
【摘要】:Tensilepropertiesdeterminedbythistestmethodareofvalueforidentifyingandcharacterizingmaterialsforcontrolandspecificationpurposesaswellasforprovidingdataforresearchanddevelopmentstudies.Thistestmethodisintendedforuseintestingresin-compatiblesizedglassfibermaterialsthathavebeendesignedspecificallyforusewithcertaingenerictypesofplastics.Theuseofaresinimpregnantthatiscompatiblewiththereinforcementmaterialundertestproducesresultsthataremostrepresentativeoftheactualstrengththatisavailableinthematerialwhenusedasintendedinanenditem.Prematurereinforcementfailuremayoccuriftheelongationoftheresinsystemislessthanthatofthereinforcementbeingtested.Thisrequirementmayrestricttheuseofcertainresinsystemsinthisprocedure.Misleadingresultsmaybeobtainedwhenglassfibermaterialsaretestedwithoutcompleteresinimpregnationofthefiberorwhenanon-compatibleresinisusedforimpregnation.Thistestmethodisusefulfortestingpretreatedspecimensforwhichcomparativeresultsaredesired.Valuesobtainedbythistestmethodmaybeaffectedbygagelength,grippingsystem,testingspeed,andtheresinimpregnationratioofthespecimen.1.1Thistestmethodcoversthedeterminationofthecomparativetensilepropertiesofglassfiberstrands,yarns,androvingsintheformofimpregnatedrodtestspecimenswhentestedunderdefinedconditionsofpretreatment,temperature,humidity,andtensiontestingmachinespeed.Thistestmethodisapplicabletocontinuousfilament,glassfibermaterialsthathavebeencoatedwitharesincompatiblesizing.ThismethodisintendedforuseinqualitycontrolandRx0026;D,andshouldnotbeusedtodevelopcompositesdesigndata.Note18212;ThismethodistechnicallyequivalenttotheshortmethoddescribedinISO9163.Note28212;Primeconsiderationshouldbegiventotheuseofapolymericbinderthatproducesspecimensthatyieldthehighestconsistentvaluesfortheglassfibermaterialundertest.Tensilepropertiesmayvarywithspecimenpreparation,resinimpregnationsystem,andspeedandenvironmentoftesting.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Note38212;Primeconsiderationshouldbegiventotheuseofapolymericbinderthatproducesspecimensthatyieldthehighestconsistentvaluesfortheglassfibermaterialundertest.Tensilepropertiesmayvarywithspecimenpreparation,resinimpregnationsystem,andspeedandenvironmentoftesting.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语