BS 2782-4 Method 451B-1978 塑料的试验方法.化学性能.酚醛模制材料在模制后丙酮可溶物的测定

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【英文标准名称】:Methodsoftestingplastics-Chemicalproperties-Determinationofacetone-solublematterinphenolicmouldingmaterialsaftermoulding
【原文标准名称】:塑料的试验方法.化学性能.酚醛模制材料在模制后丙酮可溶物的测定
【标准号】:BS2782-4Method451B-1978
【标准状态】:现行
【国别】:英国
【发布日期】:1978-05-31
【实施或试行日期】:1978-05-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:丙酮;化学分析和测试;含量测定;蒸发残余物测定;萃取分析法;重量分析;模塑材料;酚醛树脂;塑料;塑料和橡胶技术;高聚物;溶剂萃取方法;试样制备;试验设备
【英文主题词】:Acetone;Chemicalanalysisandtesting;Determinationofcontent;Evaporationresiduedetermination;Extractionmethodsofanalysis;Gravimetricanalysis;Mouldedmaterials;Phenolicresins;Plastics;Plasticsandrubbertechnology;Polymers;Solventextractionmethods;Specimenpreparation;Testequipment
【摘要】:Thismethodspecifiesagravimetricmethodforthedeterminationoftheamountofmatterthatcanbeextractedbyacetone,atatemperaturenearitsboilingpoint,fromfinelygroundsamplesofmouldingspreparedfromaphenolicmouldingmaterial.Thetestforacetone-solublematterisonemeansfordeterminingtherelativedegreeofcureofphenolicmouldingsmadefromagivenmaterial.Theprocessofextractioniscarriedoutunderspecifiedconditionsforaspecifiedtime.Althoughahighproportionofsoluble.matterisdetermined,extractionisnotnecessarilycomplete.Theresultsareonlycomparative,becausetheextractedmaterialnormallycontainssubstancesotherthananyundercuredresinthatmaybepresent,forexamplelubricants,colouringmatterandplasticizers.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:4P.;A4
【正文语种】:英语