SAE AIR1490 Environmental Degradation of Textiles
时间:2024-05-18 16:04:12 来源: 标准资料网 作者：标准资料网 阅读：9358
Product Code:SAE AIR1490
Title:Environmental Degradation of Textiles
Issuing Committee:Age-2a Cargo Handling Committee
Scope: The intent of this SAE Aerospace Information Report is to make available information concerning the environmental degradation of textiles as used in unit load device (ULD) equipment common to the air cargo community. Since the ULD device containing textiles should have a predictable service life, there should be data available so that predictions can be made. This document compiles available information on textiles of the types used in air cargo ULD devices and reviews the degradation characteristics of each. Textiles are used primarily in cargo restraint nets on air cargo pallets and nonstructural containers, restraint nets installed in cargo aircraft, and similar applications.
【英文标准名称】:Powerpiping
【原文标准名称】:电力管道系统
【标准号】:ANSI/ASMEB31.1-1980
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:P94
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodforEnvironmentalStress-CrackResistanceofBlow-MoldedPolyethyleneContainers
【原文标准名称】:吹模制聚乙烯容器抗环境应力裂纹的标准试验方法
【标准号】:ASTMD2561-1995(2005)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:热固性聚合物;容器;环境影响;包装件;环境试验;塑料;聚乙烯;试验
【英文主题词】:blow-moldedcontainers;environmentalstress-crack;plasticbottles;polyethylenecontainers
【摘要】:Whenproperlyused,theseproceduresmayservetoisolatesuchfactorsasmaterial,blow-moldingconditions,post-treatment,andsoforth,onthestress-crackresistanceofthecontainer.Environmentalstresscrackingofblow-moldedcontainersisgovernedbymanyfactors.Sincevarianceofanyofthesefactorscanchangetheenvironmentalstress-crackresistanceofthecontainer,thetestresultsarerepresentativeonlyofagiventestperformedunderdefinedconditionsinthelaboratory.Thereproducibilityofresultsbetweenlaboratoriesoncontainersmadeonmorethanonemachinefrommorethanonemoldhasnotbeenestablished.Resultscanbeusedforestimatingtheshelflifeofblow-moldedcontainersintermsoftheirresistancetoenvironmentalstresscrackingprovidedthisisdoneagainstarigorousbackgroundofpracticalfieldexperienceandreproducibletestdata.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,oracombinationthereof,coveredinthematerialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Undercertainconditionsofstress,andinthepresenceofenvironmentssuchassoaps,wettingagents,oils,ordetergents,blow-moldedpolyethylenecontainersmayexhibitmechanicalfailurebycrackingatstressesappreciablybelowthosethatwouldcausecrackingintheabsenceoftheseenvironments.1.2Thistestmethodmeasurestheenvironmentalstress-crackresistanceofcontainers,whichisthesummationoftheinfluenceofcontainerdesign,resin,blow-moldingconditions,posttreatment,orotherfactorsthatcanaffectthisproperty.Threeproceduresareprovidedasfollows:1.2.1ProcedureA,Stress-CrackResistanceofContainerstoCommercialLiquids8212;Thisprocedureisparticularlyusefulfordeterminingtheeffectofcontainerdesignonstress-crackresistanceorthestress-crackresistanceofaproposedcommercialpackagecontainingaproprietaryliquidproduct.1.2.2ProcedureB,Stress-CrackResistanceofaSpecificContainertoPolyoxyethylatedNonylphenol,aStress-CrackingAgent8212;TheconditionsoftestdescribedinthisprocedurearedesignedfortestingcontainersmadefromTypeIIIpolyethyleneSpecificationD1248.Therefore,thisprocedureisrecommendedforcontainersmadefromTypeIIIpolyethyleneonly.Thisprocedureisparticularlyusefulfordeterminingtheeffectofresinonthestress-crackresistanceofthecontainer.1.2.3ProcedureC,ControlledElevatedPressureStress-CrackResistanceofaSpecificContainertoPolyoxyethylatedNonylphenol,aStress-CrackingAgent8212;Theinternalpressureiscontrolledataconstantelevatedlevel.1.3Theseproceduresarenotdesignedtotestthepropensityforenvironmentalstresscrackingintheneckofcontainers,suchaswhentheneckissubjectedtoacontrolledstrainbyinsertingaplug.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Note18212;ThereisnosimilarorequivalentISOstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8andNotes1and9.
【中国标准分类号】:A80
【国际标准分类号】:83_080_20;83_140_99
【页数】:6P.;A4
【正文语种】: