【英文标准名称】:StandardTestMethodsforPolyurethaneRawMaterials:DeterminationofSpecificGravityofIsocyanates
【原文标准名称】:聚氨酯原材料的试验方法:异氰酸酯比重的标准试验方法
【标准号】:ASTMD4659-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:
【英文主题词】:density;hydrometer;isocyanates;polyurethanerawmaterials;pycnometer;specificgravity;Hydrometeranalysis;Isocyanates;Polyurethanerawmaterials--isocyanates;Purityanalysis--plastics;Pycnometer/pycnometry;Specificgravity--plastics;Tolue
【摘要】:Thesetestmethodscanbeusedforresearchorforqualitycontroltocharacterizeisocyanatesusedinpolyurethaneproducts.1.1Thesetestmethodsdeterminethespecificgravityoftoluenediisocyanateandcrudemethylene-bis-(4-phenylisocyanate).Thesetestmethodsalsoareapplicabletomanyotherliquids.(SeeNote1.)1.1.1TestMethodA8212;Specificgravitybypycnometer,forhigh-accuracydetermination.1.1.2TestMethodB8212;Specificgravitybyhydrometer,foralessaccurate,butrapid,determination.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ForspecificwarningandprecautionarystatementsseeSection7.Note18212;ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语