【英文标准名称】:Plastics-Polyamides-Determinationofviscositynumber(ISO307:2007);EnglishversionofDINENISO307:2007-08
【原文标准名称】:塑料.聚酰胺.粘度值的测定(ISO307-2007)
【标准号】:DINENISO307-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;定义;测定;仪器;数学计算;模制材料(成型部件);塑料;聚酰胺;溶液;溶剂;试样制备;测试;热塑性聚合物;粘度;粘度测量;粘度值
【英文主题词】:Chemicalanalysisandtesting;Definition;Definitions;Determination;Instruments;Mathematicalcalculations;Mouldings(shapedsection);Plastics;Polyamides;Solutions;Solvents;Specimenpreparation;Testing;Thermoplasticpolymers;Viscosity;Viscositymeasurement;Viscositynumbers
【摘要】:ThisInternationalStandardspecifiesamethodforthedeterminationoftheviscositynumberofdilutesolutionsofpolyamidesincertainspecifiedsolvents.Polyamidesamplesmustbecompletelysolubleinthesolventsmentioned.Additivessuchasfiame-retardantsandmodifiersofteninterferewiththeviscositymeasurement,havinganincreasingeffectontheviscositynumberinformicacidandadecreasingeffectontheviscositynumberinsulfuricacid.Theextentoftheeffectforpolyamidecompoundsdependsontheadditive,thequantityoftheadditive,thepresenceofotheradditivesandthecompoundingconditions.Forpurepolyamidesorpolyamidescontainingadditivesthatdonotinterferewiththeviscositymeasurement,thedeterminationoftheviscositynumberofapolyamideprovidesameasureofthemolecularmassofthepolymer.Theviscositynumberofpurepolyamidesorpolyamideswhichcontainadditivesthatdonotinterferewiththeviscositymeasurementcanbeconvertedfromonesolventtoanother.Theviscositynumberofpolyamidescontainingadditivesthatdointerferewiththeviscositymeasurementisspecifictothesolventusedandthematerialcomposition.Inthiscase,themeasuredviscositynumbercannotbeconvertedfromonesolventtoanother.ThemethodisapplicabletothepolyamidesdesignatedPA46,PA6,PA66,PA69,PA610,PA612,PA11,PA12,PA6T/66,PA61/6T,PA6T/61/66,PA6T/61,PA61/6T/66andPAMXD6asdefinedinISO1874-1,aswellastocopolyamides,compoundsofpolyamidesandotherpolyamidesthataresolubleinoneofthespecifiedsolventsunderthespecifiedconditions.Themethodisnotapplicabletopolyamidesproducedbyanionicpolymerizationoflactamsorproducedwithcross-linkingagents;suchpolyamidesarenormallyinsolubleinthespecifiedsolvents.TheviscositynumberisdeterminedbythegeneralprocedurespecifiedinISO1628-1,observingtheparticularconditionsspecifiedinthisInternationalStandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:40P.;A4
【正文语种】:德语


【英文标准名称】:StandardSpecificationforHeavyDutyShieldedCouplingsJoiningHublessCastIronSoilPipeandFittings
【原文标准名称】:重型有套连接器连接无毂铸铁污水管道和管配件的标准规范
【标准号】:ASTMC1540-2009a
【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】:A04.75
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Castironsoilpipe/fittings--specifications;Couplings--specifications;Heavy-dutyshieldedcouplings--specifications;Hublesscastironsoilpipe/fittings--specifications;Performance--buildingmaterials/applications(specifications);Shireldedcoupling
【摘要】:1.1Thisspecificationcoverstheevaluatingoftheperformanceofheavydutyshieldedcouplingstojoinhublesscastironsoilpipeandfittings.1.2CouplingscoveredbythisstandardshallhaveminimumdimensionsasfoundinTable1andFig.1ofthisstandard.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thecommitteewithjurisdictionoverthisstandardisawareofcomparablestandardspublishedbyotherorganizations,namelyCastIronSoilPipeInstitutespecificationCISPI310andFactoryMutualResearchstandardFM1680.1.5Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion,Section7,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.TABLE1NominalPipeSizeCouplingWidth1x00BD;to4in.(38to100mm)
3in.(76mm)MinimumWidth
5to10in.(127to254mm)
4in.(100mm)MinimumWidth
12to15in.(305to381mm)
5x00BD;in.(140mm)MinimumWidth