【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】:ASTME1640-2009
【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】:E37.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dynamicmechanicalanalysis;elasticmodulus;glasstransition;modulus;storagemodulus;temperature;thermalanalysis;Dynamicmechanicalanalysis(DMA);Elasticmodulus;Glasstransition(Tg)temperature;Modulus;Partiallycrystal
【摘要】:Thistestmethodcanbeusedtolocatetheglasstransitionregionandassignaglasstransitiontemperatureofamorphousandsemi-crystallinematerials.Dynamicmechanicalanalyzersmonitorchangesintheviscoelasticpropertiesofamaterialasafunctionoftemperatureandfrequency,providingameanstoquantifythesechanges.Inidealcases,thetemperatureoftheonsetofthedecreaseinstoragemodulusmarkstheglasstransition.Aglasstransitiontemperature(Tg)isusefulincharacterizingmanyimportantphysicalattributesofthermoplastic,thermosets,andsemi-crystallinematerialsincludingtheirthermalhistory,processingconditions,physicalstability,progressofchemicalreactions,degreeofcure,andbothmechanicalandelectricalbehavior.Tgmaybedeterminedbyavarietyoftechniquesandmayvaryinaccordancewiththetechnique.Thistestmethodisusefulforqualitycontrol,specificationacceptance,andresearch.1.1Thistestmethodcoverstheassignmentofaglasstransitiontemperature(Tg)ofmaterialsusingdynamicmechanicalanalyzers.1.2Thistestmethodisapplicabletothermoplasticpolymers,thermosetpolymers,andpartiallycrystallinematerialswhicharethermallystableintheglasstransitionregion.1.3Theapplicablerangeoftemperaturesforthistestmethodisdependentupontheinstrumentationused,but,inordertoencompassallmaterials,theminimumtemperatureshouldbeaboutx2212;150x00B0;C.1.4Thistestmethodisintendedformaterialshavinganelasticmodulusintherangeof0.5MPato100GPa.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6ThisstandardissimilartoIEC61006exceptthatstandardusesthepeaktemperatureofthelossmoduluspeakastheglasstransitiontemperaturewhilethisstandardusestheextrapolatedonsettemperatureofthestoragemoduluschange.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q33
【国际标准分类号】:81_040_10
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:Petroleumproducts-Predictionofthebulkmoduliofpetroleumfluidsusedinhydraulicfluidpowersystems
【原文标准名称】:石油产品.液压流体动力系统用石油流体体积模量的预测
【标准号】:BSISO6073-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-12-15
【实施或试行日期】:1998-12-15
【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】:芳烃;液压液;脂族烃;矿物油;体积模量;石油产品;液压传动系统
【英文主题词】:definitions;petroleumproducts;bulkmodulus;hydraulicfluids;definition;compressibility;hydraulicfluidpower;hydrocarbons;hydraulicsystems;mathematicalcalculations;compacting
【摘要】:
【中国标准分类号】:E30
【国际标准分类号】:75_120
【页数】:16P;A4
【正文语种】:英语