ANSI/ASTM D6289-1998 模塑热固性塑料的模具尺寸收缩量测量的试验方法

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【英文标准名称】:TestMethodforMeasuringShrinkagefromMoldDimensionsofMoldedThermosettingPlastics
【原文标准名称】:模塑热固性塑料的模具尺寸收缩量测量的试验方法
【标准号】:ANSI/ASTMD6289-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【实施或试行日期】:1998-08-17
【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】:收缩特性;试验;试验;热固性聚合物
【英文主题词】:thermosettingpolymers;shrinkagebehaviour;testing
【摘要】:Thistestmethodisintendedtomeasureshrinkagefrommoldcavitytomoldeddimensionsofthermosettingplasticswhenmoldedbycompression,injection,ortransferunderspecifiedconditions.Thistestmethodprovidesforthemeasurementofshrinkageofthermosettingplasticsfromtheirmoldsbothinitially(within16to72hofmolding)andastheyage(post-shrinkageatelevatedtemperatures).Thismethodwillgivecomparabledatabasedonstandardspecimensandcannotpredictabsolutevaluesinactualmoldedpartswithvaryingflowpaths,wallthicknesses,pressuregradiantsandprocessconditions.Differencesinmoldshrinkagegenerallyisobservedbetweenthespecimengeometriesdescribedinthistestmethod.Knowledgeoftheinitialshrinkageofplasticsisimportantfortheconstructionofmoldsandknowledgeofpostmoldingshrinkageisimportantfordeterminingthesuitabilityofthemoldingmaterialformanufacturingthermosettingplasticcomponentswithaccuratedimensions.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninbracketsareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1-ThistestmethodandISO2577-1984areequivalentwhenbarsof120mmlength,15mmwidth,and10mmthicknessareusedforcompressionmolding;orflat,squareplaquesapproximately120by120by4mmareusedforinjectionmolding.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:
【正文语种】:英语