ASTM C765-1997(2007) 预制封缝带低温韧性的标准试验方法

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【英文标准名称】:StandardTestMethodforLow-TemperatureFlexibilityofPreformedTapeSealants
【原文标准名称】:预制封缝带低温韧性的标准试验方法
【标准号】:ASTMC765-1997(2007)
【标准状态】:现行
【国别】:
【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(US-ASTM)
【起草单位】:C24.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;试验;密封带;窄条带材;密封件;密封材料;挠性
【英文主题词】:flexibility;low-temperatureflexibility;preformedtapesealants;tapes;tapesealants
【摘要】:Preformedtapesealantsaretacky,deformablesolidsthatareusedundercompressionbetweentwosubstratesinavarietyofsealingapplications.Thisprocedureisnotintendedtosimulateanactualusecondition,butitwillgivesomeindicationoftheflexibilityandadhesionofatapeatlowtemperature.Itcanservetodifferentiatebetweenflexibletapesthatcantakesomemovementandthosethattendtohardenorembrittleonagingandcrackorloseadhesionwhenflexedatlowtemperature.Itwillalsoaidinidentifyingsealantsthathavepoorflexibilitybecausetheyareoverextendedandcontainalowlevelofbinderaswellasthosesealantshavingbindersthatwillembrittleatlowtemperature.1.1Thistestmethodcoversalaboratoryprocedurefortestingthelow-temperatureflexibilityofpreformedtapesealants.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50
【页数】:2P.;A4
【正文语种】: