作者:标准资料网 时间:2024-05-15 08:00:07   浏览:9523   来源:标准资料网

【英文标准名称】:StandardTestMethodforDeterminingLogarithmicViscosityNumberofPoly(VinylChloride)(PVC)inFormulatedCompounds
【原文标准名称】:测定按配方制造的化合物中聚氯乙烯对数粘度值的标准试验方法
【标准号】:ASTMD3591-1997(2003)
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;工艺;粘度值;测定;聚氯乙烯
【英文主题词】:formulations;logarithmicviscositynumber;poly(vinylchloride);PVC
【摘要】:ThelogarithmicviscositynumberprovidesinformationontheeffectofcompoundingorprocessingofPVC.ExposureofPVCcompositionstoshearortohightemperaturescanresultinachangeinthelogarithmicviscositynumberoftheresin.1.1Thistestmethodcoversthedeterminationofthelogarithmicviscositynumberofpoly(vinylchloride)(PVC)homopolymersaftercompoundingorprocessing.1.2Itisthebasicassumptionofthistechniquethattheformulationofthecompoundedresinisknownandthatanyadditivespresentcanbeseparatedfromtheresinbyextractionwithdiethylether.Thisisnecessarytopermitadjustmentoftheamountofsampleusedinthetesttogivearesinconcentrationincyclohexanoneof0.2177;0.002g/100mL.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsaregivenin7.3and8.4.1.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:4P.;A4
【正文语种】: