【英文标准名称】:Waterengineeringforagriculturallands;terms;pedologicalbasis
【原文标准名称】:农业水利工程.概念.土壤学原理
【标准号】:DIN4047Bb.3-1971
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【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】:P55
【国际标准分类号】:
【页数】:
【正文语种】:


【英文标准名称】:StandardTestMethodforElevatedTemperatureandHumidityResistanceofVaporRetardersforInsulation
【原文标准名称】:隔热用蒸汽缓凝剂耐高温和耐湿度性能标准试验方法
【标准号】:ASTMC1258-1994(2000)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:C16.33
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:腐蚀;试验;耐老化性;高温度;潮湿老化;耐湿度性能;水蒸汽缓凝剂;隔热用水蒸汽;水蒸汽渗透;绝缘
【英文主题词】:corrosion;humidaging;insulation;vaporretarder;watervaporpermeance;
【摘要】:Onsub-ambienttemperaturesystems,humidambientconditionscauseavapordrivingforcetowardtheinsulationwhich,ifnotretarded,isdetrimentaltotheinsulation’thermalresistance.Thereforeavaporretardershouldresistdegradation.Degradationinthistestmethodisinducedbyelevatedtemperatureandhumidityconditions.1.1ThistestmethodcoversthedeterminationoftheagingresistanceofflexiblelowpermeancevaporretardersforthermalinsulationasclassifiedinSpecificationC1136.Watervaporpermeancemeasurementandvisualinspectionafterexposureatelevatedtemperatureandhumidityareusedtoassessvaporretarderresponse.1.2Typicalvaporretardersapplicabletothistestmethodthatareintendedforindooruseincludefoil-scrim-kraftlaminates,metallizedpolyester-scrim-kraftlaminates,treatedfabrics,treatedpapers,films,foils,orcombinationsofthesematerialsthatmaycompriseavaporretardermaterial.Thistestmethodisnotintendedforassessmentoftheliquid-appliedcoatings,sealants,ormasticscommonlyusedwithinsulationproducts.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.TheSIunitsgiveninparenthesesareforinformationpurposesonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q25
【国际标准分类号】:91_100_50
【页数】:2P.;A4
【正文语种】: