动车空调风道保温层粘接强度与服役年限预测研究

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中图分类号： TQ436+ .2 文献标志码：A文章编号：1001-5922（2026）03-0650-04

Research on bonding strength and service life prediction of thermal insulation layer for EMU air conditioning ducts

LUAN Jianyang' ，LI Zhiguo' ，QIU Chaojun’ ，SHI Long （1.CRRC Tangshan Co.，Ltd.，Tangshan O640OO，Hebei China; 2.Intertek Testing Services（Tianjin）Co.，Ltd.，Tianjin 3O0384，China）

Abstract：Aiming atthe problems of peeling and blistering between aluminum foil and thermal insulation cotton in theair conditioningroof ductsof EMUs，the material propertiesof thermal insulationcoton with1Oand15yearsof servicewere analyzed through environmentalreliabilitytests.Theresultsshowed thatthepeel strength of the intact used aluminum foil-thermal insulation cotton only decreased by 14.3% compared with the new ones，but the bondingperformance degraded sharplyunder high temperatureand high humidityconditions；theelongationat break of thethermal insulationcotonitself increasedandits tensilestrength increasedabnormally，whichmaybecausedbymaterialagingand process diffrences.Itissuggested tooptimize theadhesive process，formulate diferentiated maintenance strategies for the failure areasof air ducts，and further verifythe thermal conductivityand noisereduction performance. Key words ：air duct insulation cotton;adhesion; peel strength ;adhesive process

风道保温材料为覆胶铝箔复合保温棉结构。（剩余4771字）