ASTM D4659-2003 聚氨基甲酸酯原材料的标准试验方法:异氰酸酯比重的测定

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【英文标准名称】:StandardTestMethodsforPolyurethaneRawMaterials:DeterminationofSpecificGravityofIsocyanates
【原文标准名称】:聚氨基甲酸酯原材料的标准试验方法:异氰酸酯比重的测定
【标准号】:ASTMD4659-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:试验;聚氨酯;异氰酸酯;相对密度;测定;水
【英文主题词】:density;hydrometer;isocyanates;polyurethanerawmaterials;pycnometer;specificgravity
【摘要】:Thesetestmethodscanbeusedforresearchorforqualitycontroltocharacterizeisocyanatesusedinpolyurethaneproducts.1.1Thesetestmethodsdeterminethespecificgravityoftoluenediiosocyanateandcrudemethylene-bis-(4-phenylisocyanate).Thesetestmethodsalsoareapplicabletomanyotherliquids.(SeeNote1.)1.1.1TestMethodASpecificgravitybypycnometer,forhigh-accuracydetermination.1.1.2TestMethodBSpecificgravitybyhydrometer,foralessaccurate,butrapid,determination.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninbracketsareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecificwarningandprecautionarystatementsseeNotes2and3.Note18212;ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】: