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【英文标准名称】:StandardPracticeforCalculatingPropertyRetentionIndexofPlastics
【原文标准名称】:计算塑料牢固性参数指数的标准实施规程
【标准号】:ASTMD5870-1995(2003)
【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】:D20.50
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:热塑性塑料;风化;物理性能;塑料;加速老化;牢固性参数指数;热固性塑料;试验;曝光试验;热塑性的;PRI
【英文主题词】:acceleratedtest;aging;exposure;weathering
【摘要】:1.1Thispracticecoversproceduresforthecalculationofapropertyretentionindex(PRI)ofthermoplasticandthermosetplasticsafterexposuretothermalaging,naturalorartificialacceleratedweathering,orchemicalexposures.1.2Thispracticeisnotintendedtoestablishafixedprocedureforconductingtheexposuretest,butitisintendedtoprovideasetofspecificproceduresusedtocalculatetheretentionindexofacharacteristicpropertyofthematerialafterithasbeenexposed.Selectionofthespecificexposuretestconditionsdependsonthematerialbeingtestedandthepropertybeingmeasured.Itisuptotheusertodeterminewhichexposuretestconditionsaremostrelevanttothespecificmaterialandtheserviceconditionbeingused.Theexposuretestusedmustbeconductedinaccordancewithconditionsdescribedinspecificexposurestandards.1.3Thispracticedoesnotdescribeproceduresforsamplingthematerialstobetested.Theseproceduresaredescribedinthestandardsandspecificationsapplicabletothematerialbeingevaluated.1.4TheprocedureusedtocalculatethePRIdependsonwhetherthetestusedtocharacterizethematerialsbeingexposedisdestructiveornondestructive.ThePRIcanbeusefulindescribingshort-termmechanical,electrical,andotherpropertiesofplasticsatspecifiedtemperaturesafterthematerialshavebeensubjectedtoanexposuretest.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnosimilarorequivalentISOstandard.ISODIS11248issignificantlydifferentsinceitpertainsonlytothermosettingresins.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:5P.;A4
【正文语种】: