【英文标准名称】:PracticeforRheologicalMeasurementofPolymerMeltsUsingDynamicMechanicalProcedures(08.03)
【原文标准名称】:采用动态机械程序测量多聚体融合物的惯例
【标准号】:ANSI/ASTMD4440-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:2001-09-25
【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】:流变性能;塑料;测量
【英文主题词】:plastics;measurement;rheologicalproperties
【摘要】:Thistestmethodoutlinestheuseofdynamicmechanicalinstrumentationindeterminingandreportingtherheologicalpropertiesofthermoplasticresinsandothertypesofmoltenpolymers.Itmaybeusedasamethodfordeterminingthecomplexviscosityandothersignificantviscoelasticcharacteristicsofsuchmaterialsasafunctionoffrequency,strainamplitude,temperature,andtime.Suchpropertiesmaybeinfluencedbyfillersandotheradditives.Itincorporatesalaboratorytestmethodfordeterminingtherelevantrheologicalpropertiesofapolymermeltsubjectedtovariousoscillatorydeformationsonaninstrumentofthetypecommonlyreferredtoasamechanicalordynamicspectrometer.Thistestmethodisintendedtoprovideameansofdeterminingtherheologicalpropertiesofmoltenpolymers,suchasthermoplasticsandthermoplasticelastomersoverarangeoftemperaturesbynonresonant,forced-vibrationtechniques.Plotsofmodulus,viscosity,andtandeltaasafunctionofdynamicoscillation(frequency),strainamplitude,temperature,andtimeareindicativeoftheviscoelasticpropertiesofamoltenpolymer.Thistestmethodisvalidforawiderangeoffrequencies,typicallyfrom0.01to100Hz.Thistestmethodisintendedforhomogenousandheterogeneousmoltenpolymericsystemsandcompositeformulationscontainingchemicaladditives,includingfillers,reinforcements,stabilizers,plasticizers,flameretardants,impactmodifiers,processingaids,andotherimportantchemicaladditivesoftenincorporatedintoapolymericsystemforspecificfunctionalproperties,andwhichcouldaffecttheprocessabilityandfunctionalperformance.Thesepolymericmaterialsystemshavemoltenviscositiestypicallylessthan10Pas(10poise).Apparentdiscrepanciesmayariseinresultsobtainedunderdifferingexperimentalconditions.Withoutchangingtheobserveddata,reportinginfull(asdescribedinthistestmethod)theconditionsunderwhichthedatawasobtainedmayenableapparentdifferencesobservedinanotherstudytobereconciled.Testdataobtainedbythistestmethodarerelevantandappropriateforuseinengineeringdesign.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThistestmethodisequivalenttoISO6721,Part10.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:
【正文语种】:英语
基本信息
标准名称: | 出口电力变压器检验规程 |
英文名称: | Rules for the inspection of power transformers for export |
中标分类: |
电工 >>
输变电设备 >>
变压器 |
替代情况: | 被SN/T 1179.1-2007替代 |
发布部门: | 中华人民共和国国家质量监督检验检疫总局 |
发布日期: | 2003-03-17 |
实施日期: | 2003-09-01 |
首发日期: | 1900-01-01 |
作废日期: | 2008-03-01 |
起草单位: | 国家认证认可监督管理委员会 |
出版日期: | 1900-01-01 |
页数: | 平装16开, 页数:9, 字数:13千字 |
适用范围
本标准规定了出口电力变压器的抽样、检验、试验方法、结果的判定规则。本标准适用于电力变压器(包括自耦变压器)的检验。
前言
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引用标准
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所属分类: 电工 输变电设备 变压器