ASTM D4274-2005 聚氨基甲酸乙酯原料的标准试验方法:多元醇的羟基数的测定
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【英文标准名称】:StandardTestMethodsforTestingPolyurethaneRawMaterials:DeterminationofHydroxylNumbersofPolyols
【原文标准名称】:聚氨基甲酸乙酯原料的标准试验方法:多元醇的羟基数的测定
【标准号】:ASTMD4274-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D20.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;测定;材料;羟基值;聚氨酯;试验
【英文主题词】:aceticanhydride;esterification;hydroxylnumber;phthalicanhydride;polyester;polyether;polyol;pyromelliticdianhydride;titration
【摘要】:Thesetestmethodsaresuitableforresearchandasqualitycontrolandspecificationtests.Itisnecessarytoknowthehydroxylcontentsofpolyolsinordertoformulatepolyurethanesystems.1.1Thesetestmethodsmeasurethehydroxylgroupsinpolyesterandpolyetherpolyolscontainingprimaryandsecondaryhydroxylgroups.Theyalsoapplytomanyotherhydroxyl-containingsubstances.1.1.1TestMethodA-AceticAnhydridePressureBottlerecommendedforpolyesters.1.1.2TestMethodB-PhthalicAnhydridePressureBottlerecommendedforpolyethersandpolyesters.1.1.3TestMethodC-PhthalicAnhydrideRefluxrecommendedforpolyethersandpolyesters.1.1.4TestMethodD-Imidazole-CatalyzedPhthalicAnhydridePressureBottlerecommendedforpolyethers,polyesters,polymerpolyols,andamine-initiatedpolyols.1.1.5TestMethodEImidazole-CatalyzedPyromelliticDianhydrideEsterification,recommendedforpolyolsusedforflexibleandrigidpolyurethanefoamsandurethaneelastomers.Itisrecommendedforpolyesterpolyols,polyetherpolyols,amine-startedpolyols,andpolymerpolyols(polyacrylonitrile/copolystyrene-based).1.2OtherASTMtestmethodsformeasuringhydroxylgroupsareTestMethodsD1957andE222(seeNote0).Note18212;TestMethodCisessentiallysimilartoISO6796-1981,buttherearesomedifferencesintheconcentrationsusedandsomeproceduraldetails.TherearecurrentlynodataavailableforcomparingtheresultsofTestMethodCtothoseofISO6796-1981.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:9P.;A4
【正文语种】:
【原文标准名称】:聚氨基甲酸乙酯原料的标准试验方法:多元醇的羟基数的测定
【标准号】:ASTMD4274-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D20.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;测定;材料;羟基值;聚氨酯;试验
【英文主题词】:aceticanhydride;esterification;hydroxylnumber;phthalicanhydride;polyester;polyether;polyol;pyromelliticdianhydride;titration
【摘要】:Thesetestmethodsaresuitableforresearchandasqualitycontrolandspecificationtests.Itisnecessarytoknowthehydroxylcontentsofpolyolsinordertoformulatepolyurethanesystems.1.1Thesetestmethodsmeasurethehydroxylgroupsinpolyesterandpolyetherpolyolscontainingprimaryandsecondaryhydroxylgroups.Theyalsoapplytomanyotherhydroxyl-containingsubstances.1.1.1TestMethodA-AceticAnhydridePressureBottlerecommendedforpolyesters.1.1.2TestMethodB-PhthalicAnhydridePressureBottlerecommendedforpolyethersandpolyesters.1.1.3TestMethodC-PhthalicAnhydrideRefluxrecommendedforpolyethersandpolyesters.1.1.4TestMethodD-Imidazole-CatalyzedPhthalicAnhydridePressureBottlerecommendedforpolyethers,polyesters,polymerpolyols,andamine-initiatedpolyols.1.1.5TestMethodEImidazole-CatalyzedPyromelliticDianhydrideEsterification,recommendedforpolyolsusedforflexibleandrigidpolyurethanefoamsandurethaneelastomers.Itisrecommendedforpolyesterpolyols,polyetherpolyols,amine-startedpolyols,andpolymerpolyols(polyacrylonitrile/copolystyrene-based).1.2OtherASTMtestmethodsformeasuringhydroxylgroupsareTestMethodsD1957andE222(seeNote0).Note18212;TestMethodCisessentiallysimilartoISO6796-1981,buttherearesomedifferencesintheconcentrationsusedandsomeproceduraldetails.TherearecurrentlynodataavailableforcomparingtheresultsofTestMethodCtothoseofISO6796-1981.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:9P.;A4
【正文语种】:
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