BS ISO 14848-1998 塑料制品.不饱和聚酯树脂.130℃下反应性测定

作者:标准资料网 时间:2024-05-17 13:29:27  浏览:8248   来源:标准资料网

【英文标准名称】:Plastics-Unsaturated-polyesterresins-Determinationofreactivityat130°C
【原文标准名称】:塑料制品.不饱和聚酯树脂.130℃下反应性测定
【标准号】:BSISO14848-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-08-15
【实施或试行日期】:1998-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:聚酯;化学反应;化学性质;化学分析和试验;聚合;不饱和烃;热塑性聚合物;再现性;试验设备;高聚物;化学动力学;塑料;精密度
【英文主题词】:Chemicalproperties;Determination;Mouldingmaterials;Plastics;Polyesterresins;Polymerization;Reactivity;Unsaturated
【摘要】:ThisInternationalStandardspecifiesamethodofmeasuring-thetimerequiredforthetemperatureofasolutionofunsaturated-polyesterresinandacatalyst,heatedinathermostaticallycontrolledbathat130℃,torise·from80℃to140℃,·from80℃tothemaximumtemperaturereached;-themaximumtemperaturereached;-thespeedofthereaction,determinedbydrawingatangentatthepointofinflectionofthetemperature/timecurve.Itappliesinparticulartounsaturated-polyesterresinsprocessedatatemperaturehigherthan100℃.NOTE-Theresultsarecloselylinkedtotheconditions.TheaimofthisInternationalStandardistodefinethemasexactlyaspossible,particularlythefollowing:a)Thequantityandformoftheresinsamplebeingexamined(testtubediameter,heightofresininthetube).b)Therateatwhichthesampleisheatedinthebath.Forexample,theuseofaliquidhavingarelativelylowheatcapacity(ethyleneglycol,siliconeoil)leadstoslowerheating.c)Thetypeofthermometerused.Thermometershavingaresponseslowerthanthatofathermocouple,andresistanceprobeshavingtoolargeaheat-sensitiveelement,areunsuitable.d)Thepositionoftheheat-sensitiveelementintheresin,bothheightwiseandrelativetotheaxisofthetesttubecontainingtheresin.e)Thenatureofthecatalyst.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:12P;A4
【正文语种】:英语