ASTM D4660-2006 聚氨酯原料的标准试验方法:甲苯二异氰酸酯中同分异构体含量的测定

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【英文标准名称】:StandardTestMethodsforPolyurethaneRawMaterials:DeterminationoftheIsomerContentofToluenediisocyanate
【原文标准名称】:聚氨酯原料的标准试验方法:甲苯二异氰酸酯中同分异构体含量的测定
【标准号】:ASTMD4660-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:含量测定;塑料;聚氨酯;试验
【英文主题词】:FTIR;infrared;IR;isomer;polyurethanerawmaterial;TDI;toluenediisocyanate
【摘要】:Thesetestmethodscanbeusedforresearchorforqualitycontroltodeterminetheisomerratiosoftoluenediisocyanates.Theisomerratioofatoluenediisocyanaterelatestoitsreactivity.1.1Thesetestmethodsmeasuretheamountoftoluene-2,6-diisocyanate(TDI)ortoluene-2,4-diisocyanateinmixturesofthe2,4-and2,6-isomers.Twotestmethodsarerequiredtogiveaccurateresultsoverabroadrangeofisomerconcentrations.1.1.1TestMethodAApplicabletoTDIsamplescontaining5to95%2,6-isomer(95to5%2,4-isomer).1.1.2TestMethodBApplicabletoTDIsamplescontaining0to5%2,6-isomer(95to100%2,4-isomer).ThesetestmethodsareequivalenttoISO15064.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecificwarningandprecautionarystatementsseeNote3.
【中国标准分类号】:G31
【国际标准分类号】:83_040_30
【页数】:6P.;A4
【正文语种】: