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【英文标准名称】:StandardTestMethodforMeasuringSolutionViscosityofPolymerswithaDifferentialViscometer
【原文标准名称】:差示粘度计测量高聚物溶液粘度的标准试验方法
【标准号】:ASTMD5225-1998(2003)
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高聚物;粘度;塑料;试验
【英文主题词】:differentialsolutionviscosity;differentialviscometer;polymersolutionviscosity
【摘要】:Solutionviscosityvaluesforpolymersarerelatedtotheaveragemolecularsizeofthatportionofthepolymerwhichdissolvesinthesolvent.1.1Thistestmethodcoversthedeterminationofthesolutionviscosityofpolymersusingadifferentialorthemodifieddifferentialviscometer.Itisapplicabletoallpolymersthatdissolvecompletelywithoutchemicalreactionordegradationtoformsolutionsthatarestablewithtimeandtemperature.Resultsofthetestareusuallyexpressedasspecificviscosity,intrinsicviscosity(limitingviscositynumber),inherentviscosity(logarithmicviscositynumber),orrelativeviscosity(viscosityratio).1.2Sincethereismorethanonetypeofviscometeravailabletomeasureadifferentialpressure,followthemanufacturersdirectionsapplicabletotheequipmentbeingused.1.3ThesolutionviscosityvaluesarecomparablewiththoseobtainedusingaglasscapillaryofTestMethodD2857.Thistestmethoddiffersfromtheglasscapillaryinthatthesolventandthesolutionarecomparedatthesametimethatatestisrun.Withaglasscapillary,eachsolutionmustbereferencedbacktothesolventruninthesamecapillaryatthesametemperature.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection8.Note1ThereisnoISOequivalentmethod.
【中国标准分类号】:G32
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】: