NF P10-203-2-1993 DTU20-12.屋顶和不透水的砖石工程.屋顶用防水覆盖层的砖石工程结构.第2部分:特殊条款
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【英文标准名称】:DTU20-12.Roofandwatertightnessmasonry.Masonrystructuralworkforroofsintendedtoreceiveawaterproofblanket.Part2:specialclauses.
【原文标准名称】:DTU20-12.屋顶和不透水的砖石工程.屋顶用防水覆盖层的砖石工程结构.第2部分:特殊条款
【标准号】:NFP10-203-2-1993
【标准状态】:现行
【国别】:法国
【发布日期】:1993-09-01
【实施或试行日期】:1993-09-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:P24
【国际标准分类号】:91_060_20;91_080_30
【页数】:4P;A4
【正文语种】:其他
【英文标准名称】:Emptyenclosuresforlow-voltageswitchgearandcontrolgearassemblies-Generalrequirements(IEC62208:2011);GermanversionEN62208:2011
【原文标准名称】:低压开关设备和控制设备组件用空外壳.一般要求
【标准号】:EN62208-2011
【标准状态】:现行
【国别】:
【发布日期】:2012-06-01
【实施或试行日期】:2012-06-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Characteristics;Constructionrequirements;Definitions;Degreesofprotection;Dimensions;Earthconductors;Electricalengineering;Enclosures;Environmentalcondition;Insulatingmaterials;Insulatingstrength;Insulations;Loadcapacity;Loading;Lowvoltage;Low-voltageswitchgear;Mountingdevices;Operatingconditions;Protectiondevices;Qualificationtests;Resistance;Structuralsystems;Switchgear;Switchgearassemblies;Testing;Testingconditions;Transportboxes;Verification
【摘要】:
【中国标准分类号】:K30
【国际标准分类号】:29_130_20
【页数】:27P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringShrinkagefromMoldDimensionsofMoldedThermosettingPlastics
【原文标准名称】:测量由模制热固塑料的模型尺寸收缩的标准试验方法
【标准号】:ASTMD6289-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D20.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:moldingshrinkage;post-moldingshrinkage;thermosetplastics;Compression-moldedplasticspecimens;Injectionmolding/extrusioncompounds;Molding/extrusioncompounds/materials;Moldingshrinkage;Post-moldingshrinkage;Shrinkage--plastics;Thermosettin
【摘要】:CompressionMolding8212;Incompressionmolding,thedifferencebetweenthedimensionsofamoldandofthemoldedarticleproducedthereinfromagivenmaterialvaryaccordingtothedesignandoperationofthemold.Itisprobablethatshrinkagewillapproachaminimumwheredesignandoperationaresuchthatamaximumofmaterialisforcedsolidlyintothemoldcavityorsomepartofit,orwherethemoldedarticleishardenedtoamaximumwhilestillunderpressure,particularlybycooling.Incontrast,shrinkagesarehigherwherethechargemustflowinthemoldcavitybutdoesnotreceiveandtransmitenoughpressuretobeforcedfirmlyintoallitsrecesses,orwherethemoldedarticleisnotfullyhardenedwhendischarged.Theplasticityofthematerialusedaffectsshrinkageinsofarasitaffectstheretentionandcompressionofthecharge.InjectionMolding8212;Ininjectionmolding,asincompressionmolding,thedifferencesbetweenthedimensionsofthemoldandofthemoldedarticleproducedthereinfromagivenmaterialvaryaccordingtothedesignandoperationofthemold.Thedifferencesvarywiththetypeandsizeofmoldingmachine,thethicknessofmoldedsections,thedegreeanddirectionofflowormovementofmaterialinthemold,thesizeofthenozzle,sprue,runner,andgate,thecycleonwhichthemachineisoperated,thetemperatureofthemold,andthelengthoftimethatfollow-uppressureismaintained.Asinthecaseofcompressionmolding,shrinkageswillapproachaminimumwheredesignandoperationaresuchthatamaximumofmaterialisforcedsolidlyintothemoldcavityandwherethemoldedarticleishardenedtoamaximumwhilestillunderpressureasaresultoftheuseofarunner,sprue,andnozzleofpropersize,alongwithproperdwell.Asincompressionmolding,shrinkagesarehigherwherethechargemustflowinthemoldcavitybutdoesnotreceiveandtransmitenoughpressuretobeforcedfirmlyintoalloftherecessesofthemold.Theplasticityofthematerialusedaffectsshrinkageindirectly,inthatthemorereadilyplasticizedmaterialwillrequirealowermoldingtemperature.TransferMolding8212;Intransfermolding,asincompressionorinjectionmolding,thedifferencebetweenthedimensionsofthemoldandofthemoldedarticleproducedthereinfromagivenmaterialvaryaccordingtothedesignandoperationofthemold.Itisaffectedbythesizeandtemperatureofthepotorcylinderandthepressureonit,aswellasonmoldtemperatureandmoldingcycle.Directionofflowisnotasimportantafactor.MaterialsStandards8212;Alwaysrefertomaterialstandardsforspecialtreatmentpriortomolding,moldingconditionsandspecialhandlingofthetestspecimensaftermolding.Intheeventthematerialstandardisunavailable,contactthemanufacturerfortheserecommendations.Utility8212;Measurementofbatch-to-batchconsistencyininitialshrinkagefrommoldtomoldeddimensionsisusefulforevaluatingthequalityofthermosettingplastics.1.1Thistestmethodisintendedtomeasureshrinkagefrommoldcavitytomoldeddimensionsofthermosettingplasticswhenmoldedbycompression,injection,ortransferunderspecifiedconditions.1.2Thistestmethodprovidesforthemeasurementofshrinkageofthermosettingplasticsfromtheirmoldsbothinitially(within16to72hofmolding)andastheyage(postx2013;shrinkageatelevatedtemperatures).1.3Thismethodwillgivecomparabledatabasedonstandardspecimensandcannotpredictabsolutevaluesinactualmol......
【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
