【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】:ASTMC1258-2008
【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】:C16.33
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:orrosion;humidaging;insulation;vaporretarder;watervaporpermeance;Agingresistance;Corrosion--insulatingmaterials;Humidaging;Insulation;Watervaporpermeability;Watervaporretarders
【摘要】:Onsub-ambienttemperaturesystems,humidambientconditionscauseavapordrivingforcetowardtheinsulationwhich,ifnotretarded,isdetrimentaltotheinsulation''sthermalresistance.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】:英语