ASTM D4889-2004 聚氨基甲酸乙酯原材料的标准试验方法:天然异氰酸酯或改性异氰酸酯的粘度测定

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【英文标准名称】:StandardTestMethodsforPolyurethaneRawMaterials:DeterminationofViscosityofCrudeorModifiedIsocyanates
【原文标准名称】:聚氨基甲酸乙酯原材料的标准试验方法:天然异氰酸酯或改性异氰酸酯的粘度测定
【标准号】:ASTMD4889-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:粘度;化学;异氰酸酯;试验
【英文主题词】:Brookfield;Cannon-Fenske;isocyanates;polyurethanerawmaterials;viscosity
【摘要】:1.1Thesetestmethods(AandB)determinetheviscosityofcrudeormodifiedisocyanates.Theyareapplicabletoproductsderivedfromtoluenediisocyanate,methylene-bis-(4-phenylisocyanate),andpolymethylenepolyphenylisocyanates(seeNote0).Note0TestmethodAincludesaprocedureformeasuringdynamicviscosityusingarotationalBrookfieldinstrument.TestmethodBissimplyareferencetoageneralprocedureformeasuringkinematicviscosityusingaCannon-Fenskeinstrument,D445.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecifichazardsstatementsseeWarningsattheendofand.Note2ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】: