ASTM E 1640-1994 用动态力学分析测定玻璃转变温度的标准试验方法
时间:2024-05-05 10:18:35 来源: 标准资料网 作者：标准资料网 阅读：8643
【英文标准名称】:StandardTestMethodforAssignmentoftheGlassTransitionTemperatureByDynamicMechanicalAnalysis
【原文标准名称】:用动态力学分析测定玻璃转变温度的标准试验方法
【标准号】:ASTME1640-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;高聚物;热塑性的;热分析;温度;试验;模量;弹性模量;半;非晶体材料;动态力学分析;晶体材料;动态力学分析;玻璃转变温度;玻璃转变温度TG;部分结晶材料;存储系数;热固聚合物
【英文主题词】:
【摘要】:
【中国标准分类号】:Q32
【国际标准分类号】:81_040_00
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforOxyacetyleneAblationTestingofThermalInsulationMaterials
【原文标准名称】:热绝缘材料的氧乙炔烧蚀试验的标准试验方法
【标准号】:ASTME285-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E21.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ablation;convection;oxyacetylene;thermalinsulation;Ablativematerials;Calorimeter--aerospaceapplications;Insulationindex;Oxyacetylene
【摘要】:Thistestmethodisintendedtoscreenthemostobviouspoormaterialsfromfurtherconsideration.Sincethecombustiongasesmorecloselyresembletheenvironmentgeneratedinrocketmotors,thistestmethodismoreapplicabletoscreeningmaterialsfornozzlesandmotorlinersthanforaerodynamicheating.Theenvironmentforanyspecifichigh-temperaturethermalprotectionproblemispeculiartothatparticularapplication.Theconditionsgeneratedbytheoxyacetyleneheatsourceinthistestmethodrepresentonlyonesetofconditions;theydonotsimulateanyspecificapplication.Thus,thetestresultscannotbeusedtopredictdirectlythebehaviorofmaterialsforspecificenvironments,norcantheybeusedfordesignpurposes.However,overanumberofyears,thetesthasbeenusefulindeterminingtherelativemeritofmaterials,particularlyinweedingoutobviouslypoormaterialsfrommoreadvanceddata-generationprograms.Ithasalsobeenconsideredforuseasaproductionquality-controltestforrocketinsulationmaterials.Thetesteriscautionedtouseprudenceinextendingtheusefulnessofthetestmethodbeyonditsoriginalintent,namely,screening.Forsituationshavingenvironmentswidelydifferentfromthoseofthetest,theuserisurgedtomodifytheoxyacetyleneburnerconditionstosuithisrequirementsorperhapschangetoadifferentheat-generatingdevicethatprovidesbettersimulation.1.1Thistestmethodcoversthescreeningofablativematerialstodeterminetherelativethermalinsulationeffectivenesswhentestedasaflatpanelinanenvironmentofasteadyflowofhotgasprovidedbyanoxyacetyleneburner.1.2Thistestmethodshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmethodmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.
【中国标准分类号】:Q25
【国际标准分类号】:49_025_99
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:EmergencyAlertMessageforCable
【原文标准名称】:电缆的应急警报信息
【标准号】:ANSIJ-STD-042-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【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】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Cables;Emergencyalert;Messages
【摘要】:
【中国标准分类号】:M04
【国际标准分类号】:33_040_30;33_160_25
【页数】:
【正文语种】:英语