摘要
通过对氯丁橡胶在55℃、70℃、85℃、100℃下热空气加速老化的实验,研究了氯丁橡胶的老化机理并进行了寿命预测。红外分析结果说明氯丁橡胶的老化机理为:热氧老化在C C上进行;85℃、100℃侧基Cl脱离主链。以扯断伸长率为指标进行寿命预测,可知氯丁橡胶在本实验条件下的贮存寿命约为20a。
The thermal oxidative aging properties of neoprene at 55 ℃, 70 ℃, 85 ℃, 100 ℃ were determined by using accelerated aging method at laboratory. The aging mechanism of chloroprene rub- ber was determined by IR：thermal aging on the C = C;85 ℃ ,100 ℃ the side groups C1 was away from the main chain. The relationship between properties and aging time of neoprene was established, and predicted at 25 ℃ neoprene storage life is twenty years.
出处
《弹性体》
CAS
2013年第1期22-25,共4页
China Elastomerics
基金
海军装备部重点科研项目
关键词
氯丁橡胶
热空气老化
寿命
neoprene thermal oxidative aging aging
