BS 4072-1999 木材防腐备用的铜/铬/砷
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来源:标准资料网
【英文标准名称】:Copper/chromium/arsenicpreparationsforwoodpreservation
【原文标准名称】:木材防腐备用的铜/铬/砷
【标准号】:BS4072-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-12-15
【实施或试行日期】:1999-12-15
【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】:
【英文主题词】:
【摘要】:Thisstandardspecifiesrequirementsfortwotypesofwaterbornepreservativescontainingmixturesofcompoundsofcopper(Ⅱ),chromium(Ⅵ)andarsenic(Ⅴ)forapplicationtotimbertoprotectitagainstattackinservicebywood-destroyingorganisms.NOTE1TestmethodsaregiveninannexAandannexBandguidanceonmethodsoftimbertreatmentisgiveninannexC.NOTE2Thepreparationsarenotnecessarilysuitableforallwoodpreservationapplications.AdviceontheirsuitabilityisgiveninBS1282andincommodityspecificationsandcodesofpracticefortimberpreservation.
【中国标准分类号】:B71
【国际标准分类号】:71_100_50
【页数】:12P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforPlastics:DynamicMechanicalPropertiesMeltRheology
【原文标准名称】:塑料的标准试验方法:动力机械性能.熔体流变学
【标准号】:ASTMD4440-2008
【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】:D20.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:Dynamicmechanicalanalysis(DMA)--plastics;Flowandflowrate--thermoplastics;Frequencymeasurements;Meltindex;Polymers;Rheology/rheologicalproperties--plastics;Straintesting--plastics;Thermoplasticresins;Viscoelasticproperties;Viscosity--p
【摘要】:Thistestmethodprovidesasimplemeansofcharacterizingtheimportantrheologicalpropertiesandviscosityofthermoplasticpolymersusingverysmallamountsofmaterial(approximately25to50mmindiameterby1to3mminthickness...approximately3to5g).Datamaybeusedforqualitycontrol,researchanddevelopment,andestablishmentofoptimumprocessingconditions.Dynamicmechanicaltestingprovidesasensitivemethodfordeterminingmoltenpolymerpropertiesbymeasuringtheelasticandlossmoduliasafunctionoffrequency,strain,temperature,ortime.Plotsofviscosity,storage,andlossmoduli,andtandeltaasafunctionoftheaforementionedprocessparametersprovidegraphicalrepresentationindicativeofmolecularweight,molecularweightdistribution,effectsofchainbranching,andmelt-processabilityforspecifiedconditions.Valuesobtainedinthistestmethodcanbeusedtoassessthefollowing:Complexviscosityofthepolymermeltasafunctionofdynamicoscillation,Processingviscosity,minimumaswellaschangesinviscosityasafunctionofexperimentalparameters,Effectsofprocessingtreatment,Relativepolymerbehavioralproperties,includingviscosityanddamping,andEffectsofformulationadditivesthatmightaffectprocessabilityorperformance.Beforeproceedingwiththistestmethod,referenceshouldbemadetothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredintherelevantASTMmaterialsspecificationshalltakeprecedenceoverthosementionedinthetestmethod.IftherearenorelevantASTMmaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodoutlinestheuseofdynamicmechanicalinstrumentationindeterminingandreportingtherheologicalpropertiesofthermoplasticresinsandothertypesofmoltenpolymers.Itmaybeusedasamethodfordeterminingthecomplexviscosityandothersignificantviscoelasticcharacteristicsofsuchmaterialsasafunctionoffrequency,strainamplitude,temperature,andtime.Suchpropertiesmaybeinfluencedbyfillersandotheradditives.1.2Itincorporatesalaboratorytestmethodfordeterminingtherelevantrheologicalpropertiesofapolymermeltsubjectedtovariousoscillatorydeformationsonaninstrumentofthetypecommonlyreferredtoasamechanicalordynamicspectrometer.1.3Thistestmethodisintendedtoprovideameansofdeterminingtherheologicalpropertiesofmoltenpolymers,suchasthermoplasticsandthermoplasticelastomersoverarangeoftemperaturesbynonresonant,forced-vibrationtechniques.Plotsofmodulus,viscosity,andtandeltaasafunctionofdynamicoscillation(frequency),strainamplitude,temperature,andtimeareindicativeoftheviscoelasticpropertiesofamoltenpolymer.1.4Thistestmethodisvalidforawiderangeoffrequencies,typicallyfrom0.01to100Hz.1.5Thistestmethodisintendedforhomogenousandheterogeneousmoltenpolymericsystemsandcompositeformulationscontainingchemicaladditives,includingfillers,reinforcements,stabilizers,plasticizers,flameretardants,impactmodifiers,processingaids,andotherimportantchemicaladditivesoftenincorporatedintoapolymericsystemforspecificfunctionalproperties,andwhichcouldaffecttheprocessabilityandfunctionalperformance.Thesepolymericmaterialsystemshavemoltenviscositiestypicallylessthan106Pax00B7;s(107poise).1.6Apparentdiscrepanciesmayariseinresultsobtainedunderdifferingexperimentalconditions.Withoutchangingtheobserveddata,reportinginfull(asdescribedinthistestmethod)theconditionsunderwhicht......
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforEvaluationofResistancetoElectricalBreakdownbyTreeinginSolidDielectricMaterialsUsingDivergingFields
【原文标准名称】:使用分散电场法对固体介电材料抗树枝状电击穿性的试验方法
【标准号】:ASTMD3756-1997
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:评定;电气试验;电介质击穿;电绝缘;特性;介电强度;试验;绝缘;电气工程
【英文主题词】:Dielectricbreakdown;Dielectricstrength;Electricalengineering;Electricalinsulation;Electricaltesting;Evaluations;Insulations;Properties;Testing
【摘要】:
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:6P;A4
【正文语种】:英语
