尼龙6湿热老化寿命预测  

Service Life Prediction of Nylon 6 Under Hydrothermal Ageing

作　　者：高立花 叶林[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2015年第5期111-114,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51133005)

摘　　要：以尼龙6为研究对象,首先基于Arrhenius模型预测其在单一温度老化因子条件下的使用寿命,进一步将Arrhenius模型与Eyring反应论模型相结合,引入湿度因子,研究建立尼龙6湿热老化寿命预测模型。研究发现,随老化温度降低,尼龙6热氧降解活化能(Ea)降低,即降解机理发生改变;存在一个临界温度,在该温度以下湿度引起的水解降解不占主导地位;经实验验证,尼龙6湿热老化寿命模型预测效果较好。The time temperature superposition method based on Arrhenius model was applied to predict the service life of nylon 6 with single temperature aging factor. In addition,the combination of Eyring model and Arrhenius model was further used to predict the service life of nylon 6 at different temperatures and humidity by introducing humidity aging factor,and the service life prediction model under hydrothermal ageing for nylon 6 was established. The results show that the thermal-oxidative degradation activation energy( Ea) declines with decrease of the ageing temperature,indicating of the change of degradation mechanism. There is a critical temperature below which the hydrolytic degradation doesn't dominate. The service life prediction model of nylon 6 under hydrothermal ageing is proved to be effective by ageing experiments.

关 键 词：尼龙6 湿热老化 使用寿命 Arrhenius模型 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]