有机硅胶粘剂加速老化与自然老化的相关性研究  

Study on the correlation between accelerated aging and natural aging of silicone adhesive

作　　者：毕骁毅 安靖怡 李子阳 储甜甜 张孝阿[1] 张军营[1] Bi Xiaoyi;An Jingyi;Li Ziyang;Chu Tiantian;Zhang Xiaoa;Zhang Junying(Key Laboratory of Carbon Fiber and Functional Polymers of Ministry of Education,College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学,碳纤维及功能高分子教育部重点实验室,材料科学与工程学院,北京100029

出　　处：《中国胶粘剂》2024年第7期31-36,42,共7页China Adhesives

基　　金：山东省重大科技创新工程(2019JZZY020232)。

摘　　要：选取一种单组分有机硅胶粘剂在国内典型气候条件下的漠河和敦煌两个试验站进行了自然大气暴露试验,同时在实验室环境下进行了热空气老化、湿热老化、高低温交变老化和氙灯老化4种人工加速老化试验。通过测试老化后有机硅胶粘剂试样的拉伸强度、断裂伸长率和拉伸剪切强度3种力学性能,采用灰色关联分析的方法,计算了自然老化与各种人工加速老化之间的关联度,找出了退化趋势与自然老化最相似的加速老化条件,并用Pearson相关系数的方法进行了验证。进而进行了加速因子的计算,根据加速因子即可快速预测有机硅胶粘剂在自然老化过程中的性能退化规律。研究结果表明:以拉伸剪切强度的保留率为性能衰退指标时,氙灯老化试验与漠河和敦煌两个地区自然老化试验的相关性最大,关联度分别为0.92和0.95,加速因子分别为5.51和4.14。A single-component silicone adhesive was selected to carry out natural atmospheric exposure tests at two test stations in Mohe and Dunhuang under typical climatic conditions in China,and at the same time,four artificial accelerated aging tests,namely hot air aging,hydrothermal aging,high and low temperature alternating aging and xenon lamp aging,were conducted in laboratory environment.By testing three mechanical properties of silicone adhesive samples after aging,namely tensile strength,elongation at break and tensile shear strength,the grey correlation analysis method was used to calculate the correlation degree between natural aging and various artificial accelerated aging conditions.The accelerated aging conditions with the most similar degradation trend to natural aging were identified,and the Pearson correlation coefficient method was used to verify the results.Furthermore,the acceleration factor was calculated,and based on the acceleration factor,the performance degradation law of silicone adhesive during natural aging could be quickly predicted.The research results showed that when the retention rate of tensile shear strength was used as the performance degradation index,the correlation between xenon lamp aging test and natural aging test in Mohe and Dunhuang area was the highest,with correlation coefficients of 0.92 and 0.95,and acceleration factors of 5.51 and 4.14,respectively.

关 键 词：有机硅胶粘剂 自然老化试验 加速老化试验 灰色关联 加速因子 

分 类 号：TQ433.4[化学工程]