HG 3-19953-1976 化学试剂 碳酸锶

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【英文标准名称】:StandardPracticeforConditioningElectricalInsulatingMaterialsforTesting
【原文标准名称】:试验用调整电气绝缘材料的标准操作规程
【标准号】:ASTMD6054-1997(2004)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:D09.12
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:调整;电绝缘;相对湿度;湿度;温度
【英文主题词】:conditioning;electricalinsulation;humidity;relativehumidity;temperature
【摘要】:Conditioningofspecimensmaybeundertaken:(1)forthepurposeofbringingthematerialintoequilibriumwithnormaloraverageroomconditions;(2)simplytoobtainreproducibleresults;or(3)tosubjectthematerialtoabnormalconditionsoftemperatureorhumidityinordertopredictitsservicebehavior.However,itisnotwithinthescopeofthispracticetodefineproceduresfordeterminingagingcharacteristicsofelectricalinsulatingmaterials.Theconditioningproceduresprescribedinthispracticearedesignedtoobtainreproducibleresultsandmaygivevaluessomewhatdifferentfromvaluesunderequilibriumatnormalconditions,dependingupontheparticularmaterialandtest.Toensuresubstantialequilibriumundernormalconditionsofhumidityandtemperature,however,mayrequiremanydaysorweeksdependinguponthicknessandtypeofmaterialanditsprevioushistory.Consequently,conditioningforreproducibilitymustofnecessitybeusedforgeneralpurchaseandproductcontroltests.Anyreferencetothispracticemustincludetheinformationneededfordesignatingtheconditioningprocedure(andtestingprocedure,ifapplicable),asdefinedinSection7,oroneofthestandardconditioningprocedurestobefollowed,asdefinedinSection8.1.1Thispracticecoversproceduresforconditioningelectricalinsulatingmaterials(althoughnotnecessarilytoequilibrium)priortotestingandtheconditionsunderwhichtheyshallbetested.Ingeneralthephysicalandelectricalpropertiesofelectricalinsulatingmaterialsareinfluencedbytemperatureandrelativehumidityinamannerthatmateriallyaffectstestresults.Inorderthatreliablecomparisonsmaybemadeofdifferentmaterialsandbetweendifferentlaboratories,itisnecessarytostandardizethehumidityandtemperatureconditionstowhichspecimensofthesematerialsaresubjectedpriortoandduringtesting.1.2ThispracticeissimilartoPracticeD618.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:3P.;A4
【正文语种】:

MIL-PRF-131J, PERFORMANCE SPECIFICATION: BARRIER MATERIALS, WATER VAPOR-PROOF, GREASE-PROOF, FLEXIBLE, HEAT-SEALABLE (26 AUG 1998)SUPERSEDING MIL-B-131H]., This specification covers the requirements for heat-sealable, greaseproof, flexible barrier materials having low water vapor transmission characteristics for use in military packaging.