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【英文标准名称】:StandardTestMethodforSpiralFlowofLow-PressureThermosettingMoldingCompounds
【原文标准名称】:低压热固性模塑料螺旋形流动的试验方法
【标准号】:ASTMD3123-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D20.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;流动性;静压铸件;塑料;热固性聚合物
【英文主题词】:spiralflow;thermosets
【摘要】:Thespiralflowofathermosettingmoldingcompoundisameasureofthecombinedcharacteristicsoffusionunderpressure,meltviscosity,andgelationrateunderspecificconditions.Thistestmethodisusefulasaqualitycontroltestandasanacceptancecriterion.Thistestmethod,byitself,isnotavalidmeansforcomparingthemoldabilityofsimilarordifferentmoldingcompoundsbecauseitcannotduplicateactualconditionsprevalentindifferenttypesofproductionmolds.Thistestmethodispresentlyintendedforuseatatransferpressureof6.9MPa[1000psi]andamoldtemperatureof423x00B1;3K(150x00B1;3x00B0;C[302x00B1;5x00B0;F]).1.1Thistestmethodcoversaprocedureformeasuringthespiralflowofthermosettingmoldingcompounds(softorverysoft)designedformoldingpressuresunder6.9MPa[1000psi].Itisespeciallysuitedforthosecompoundsthatmaybeusedforencapsulationorotherlowpressuremoldingtechniques.Textile-reinforcedcompoundsshouldnotbetestedusingthistestmethod.Itinvolvestheuseofastandardspiralflowmoldinatransfermoldingpressunderspecifiedconditionsofappliedtemperatureandpressurewithacontrolledchargemass.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_140_99
【页数】:3P.;A4
【正文语种】: