【英文标准名称】:Plastics-Poly(methylmethacrylate)(PMMA)mouldingandextrusionmaterials-Designation
【原文标准名称】:塑料.聚甲基丙烯酸甲酯(PMMA)模塑和挤压材料.标记
【标准号】:BSISO8257-1-1987
【标准状态】:作废
【国别】:英国
【发布日期】:1995-08-15
【实施或试行日期】:1995-08-15
【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】:软化点;聚甲基丙烯酸甲酯;挤压;名称与符号;模制;模制材料;塑料;粘度
【英文主题词】:Acrylicresins;Characteristics;Classification;Datablocks;Definitions;Designationsystems;Designations;Extruding;Identification;Methylmethacrylate;Mouldingmaterials;Moulding(process);Mouldings(shapedsection);Plastics;PMMAplastics;Polymethylmethacrylate;Polymethylmethacrylate;Properties;Specification;Thermoplasticpolymers
【摘要】:1ThispartofISO8257establishesasystemofdesignationforpoly(methylmethacrylate)thermoplasticmaterialswhichmaybeusedasthebasisforspecifications.2ThetypesofPMMAplasticsaredifferentiatedfromeachotherbyaclassificationsystembasedonappropriatelevelsofthedesignatoryproperties:a)Vicatsofteningtemperature,b)meltflowrate,c)viscositynumber(optional),andinformationaboutintendedapplication,methodofpro-cessing,importantproperties,additivesandcolour.3Thisdesignationsystemisapplicabletoallpoly(methylmethacrylate)(PMMA)homopolymersandcopolymersofmethylmethacrylate(MMA)containingatleast80%(m/m)ofMMAandnotmorethan20%(m/m)ofacrylicestersorothermonomers.Itappliestomaterialsreadyfornormaluseandtomaterialsunmodifiedandmodifiedbycolorants,additives,etc.ThispartofISO8257doesnotapplytoPMMAmodifiedwithelastomers.4Itisnotintendedtoimplythatmaterialshavingthesamedesignationgivenecessarilythesameperformance.ThispartofISO8257doesnotprovideengineeringdata,performancedataordataonprocessingconditionswhichmayberequiredtospecifyamaterialforaparticularend-useormethodofpro-cessing.Ifsuchadditionalpropertiesarerequired,theyshallbedeter-minedinaccordancewiththemethodsspecifiedinISO8257-2,ifsuitable.5Inordertospecifyathermoplasticmaterialforaparticularapplicationorreproducibleprocessing,additionalrequirementscanbecodedinDataBlock5(seeclause3).
【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