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.
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