智能运动手环用聚氨酯热熔胶脱粘原因分析

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关键词：智能运动手环；聚氨酯热熔胶；脱粘原因中图分类号： 文献标志码：A

文章编号：1001-5922（2025）05-0053-03

Abstract：The failed sample is a smart sports bracelet from a manufacturer，andthe screen and shellare bonded together by hotmeltadhesive，and the material is polyurethane.During use，the screen and the shellappear to be disbonded.Inorder to find thereason for the debonding of the screen and the shell，the electronic morphologyand principal component comparison of the scree surface and the shellsurface of the debonded screen and the unused sports bracelet were carried out，and the components were compared by solution extraction.The results showed that thereason for the debonding of the screen and the shell wasthat the hot melt adhesive was attackedby squalene，oleicacidand other substances inartificial sweat，which ledtothedecreaseof theadhesive adhesion of the hot melt adhesiveand causeddebonding.Finally，through verification，it was confirmedthat artificialsweat would indedreduce the adhesion of polyurethane hot melt adhesive，and it is recommended to choose polybutylene adipate glycol polyurethane with high content，which is not easy to be eroded.

Key words：smart sports bracelets； polyurethane hot-melt adhesive ；detachment reason

运动手环广泛应用于人们日常生活的监测中，从婴幼儿游泳、幼儿园运动游戏、小学生体能发展到大学生睡眠质量与体质监测，甚至应用到孕妇有氧运动和松弛训练的监测以及糖尿病人的血糖监测，运动手环都起到了至关重要的作用，为人们的健康

保驾护航[1-7]

在使用过程中，运动手环会出现各种各样的失效，其中屏幕与壳体脱粘是其中的一种，此次分析的样品某厂家运动手环，为了查找屏幕与壳体脱粘的原因，委托方提供未使用的运动手环进行对比分析，

找到脱粘的原因。（剩余3425字）