湿热环境对结构胶粘剂机械性能的影响研究
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摘要
近年来结构胶粘剂使用越来越广泛。本文以结构胶粘剂机械性能为研究对象,重点研究湿热环境因素(相对湿度、湿热温度、胶粘剂暴露时间)对结构胶粘剂吸水性和应力应变等机械特性的影响规律,建立了相对湿度、湿热温度、胶粘剂暴露时间与胶粘剂吸水率和应力应变数学模型,并对模型进行仿真。仿真结果表明,降低相对湿度和湿度温度、减少胶粘剂在空气中暴露时间可以降低胶粘剂吸水率;降低相对湿度和湿度温度可以有效减小胶粘剂的正应变、切应变和总变形,从而提高胶粘剂的机械性能。该研究为胶粘剂的研制和使用提供了一定的理论依据。
Structural adhesive is more and more widely used in recent years,with mechanical structure adhesive for research object,the key research hot and humid environment factors(relative humidity,humidity temperature,and adhesive exposure time)on the mechanical properties such as water absorption and stress strain of structural adhesives. This paper establishes a mathematical model of relative humidity,humidity temperature,adhesive exposure time,adhesive water absorption rate and stress strain,and simulates the model. The simulation results show that lower relative humidity and moisture in the air temperature,reduce the adhesive exposure time can reduce the adhesive water absorption. Reducing the relative humidity and humidity temperature can effectively reduce the positive strain,shear strain and total deformation of the adhesive,thereby improving the mechanical properties of the adhesive. This study provides a theoretical basis for the development and use of the adhesive.
Structural adhesive is more and more widely used in recent years,with mechanical structure adhesive for research object,the key research hot and humid environment factors(relative humidity,humidity temperature,and adhesive exposure time)on the mechanical properties such as water absorption and stress strain of structural adhesives. This paper establishes a mathematical model of relative humidity,humidity temperature,adhesive exposure time,adhesive water absorption rate and stress strain,and simulates the model. The simulation results show that lower relative humidity and moisture in the air temperature,reduce the adhesive exposure time can reduce the adhesive water absorption. Reducing the relative humidity and humidity temperature can effectively reduce the positive strain,shear strain and total deformation of the adhesive,thereby improving the mechanical properties of the adhesive. This study provides a theoretical basis for the development and use of the adhesive.
引文
[1]湿热环境对胶粘剂吸水性及其胶接性能的影响研究[D].严志云,同济大学,2009.
[2]韩啸,金勇,杨鹏.结构胶接接头湿热环境耐久性研究概述[J].河北科技大学学报,2017,38(3):210-214.
[3]赵波.混元胶接单搭接头的应力与刚度分析[J].机械强度,2009,31(1):191-195.
[4]赵波,吕振华.单搭接胶接头弹性应力的二维分析方法[J].应用力学学报,2009,26(3):608-612.
[5]王毅,蒋志强,王佩艳.不同温度下层合板胶接头力学性能的实验研究[J].郑州轻工业学院学报(自然科学版),2012,27(5):78-80.
[2]韩啸,金勇,杨鹏.结构胶接接头湿热环境耐久性研究概述[J].河北科技大学学报,2017,38(3):210-214.
[3]赵波.混元胶接单搭接头的应力与刚度分析[J].机械强度,2009,31(1):191-195.
[4]赵波,吕振华.单搭接胶接头弹性应力的二维分析方法[J].应用力学学报,2009,26(3):608-612.
[5]王毅,蒋志强,王佩艳.不同温度下层合板胶接头力学性能的实验研究[J].郑州轻工业学院学报(自然科学版),2012,27(5):78-80.