摘要
舰船用电缆在热带海洋环境综合作用下易发生老化腐蚀。为获得耐候性更优的电缆,通过湿热、盐雾和光老化试验对氯丁橡胶电缆护套开展海洋环境模拟试验研究,基于试验结果从原子力显微镜及红外光谱两方面开展微观分析,初步探究其老化机理。结果显示:氯丁橡胶在湿热、盐雾及光老化试验中的老化模式主要表现为烯烃双键处形成新键,表明氯丁橡胶电缆护套在热带海洋环境下耐候性较差,建议避免在此环境下将其用作外护套。
Cables used on ships are prone to aging and corrosion under the combined effect of tropical marine environments.In order to obtain cables with better weather resistance,marine environment simulation tests are carried out on chloroprene rubber cable sheaths through wet heat,salt spray and light aging tests.Based on the test results,microscopic analysis are conducted from the aspects of atomic force microscopy and infrared spectroscopy to preliminarily explore its aging mechanism.The results show that the aging mode of chloroprene rubber in the wet heat,salt spray and light aging tests is mainly characterized by the formation of new bonds at the olefin double bonds,which indicates that the weather resistance of chloroprene rubber cable sheaths is poor in tropical marine environments.It is recommended to avoid using it as the outer sheath in such environments.
作者
闫杰
李长虹
YAN Jie;LI Changhong(CEPREI,Guangzhou 511370,China)
出处
《电子产品可靠性与环境试验》
2025年第3期50-54,共5页
Electronic Product Reliability and Environmental Testing
关键词
氯丁橡胶
船用电缆
海洋环境
老化机理
湿热试验
盐雾试验
老化试验
chloroprene rubber
ship cables
marine environment
aging mechanism
damp heat test
salt spray test
burn-in test
