含抗氧剂聚碳酸酯的制备及降解性能研究  

Study on Preparation and Thermodegradation of Polycarbonate Containing Anti-oxidant Agent

作　　者：张新兰[1] 李博[1] 张琴[1] 傅强[1] 周楠[2] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065 [2]中蓝晨光化工研究院有限公司,四川成都610041

出　　处：《塑料工业》2009年第1期49-52,共4页China Plastics Industry

摘　　要：通过在聚碳酸酯(PC)中加入不同抗氧剂以提高其热稳定性,研究了抗氧剂的种类、用量、环境条件对PC热稳定性能和降解动力学的影响。结果发现,加入复配抗氧剂能显著提高PC的热稳定性能。在有氧气情况下,抗氧剂的质量分数增至0.6%时,起始降解温度(以降解率达到5%时的温度计)从原来的472.1℃增加至500.4℃,而最大降解温度(降解速率最大温度)也从原来的530.3℃增加至546.4℃,并应用改良Coats-Redfern法对PC降解动力学做了分析。To upgrade the thermostability of polycarbonate （PC） , various varieties of antioxidants were added to PC. The effects of the variety and content of the antioxidants and that of environment conditions on the thermostability and degradative kinetics of PC were also investigated. The results showed the thermostability of PC could be upgraded obviously by the addition of composite antioxidants. In the condition of oxygen, the initial degradation temperature （the temperature of 5% degradation degree） rose from 472. 1 ℃ to 500. 4 ℃ as the mass fraction of the antioxidant increased to 0. 6% , while the top degradation temperature （ the temperature of fastest degradation rate） rose from 530.3 ℃ to 546. 4 ℃. The kinetics of PC degradation was analyzed by means of modified Coats-Redfem method.

关 键 词：聚碳酸酯 抗氧剂 热稳定性 降解动力学 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]