常用抗氧剂对PMMA树脂热氧化稳定性的影响  

Effect of Current Antioxidants on Thermal Oxidation Stability of PMMA

作　　者：魏长吉[1] 曹春雷[2] 张子健[1] 杨海东[1] 张会轩[1,2] 

机构地区：[1]长春工业大学合成树脂与特种纤维教育部工程研究中心,吉林长春130012 [2]中国科学院长春应用化学所,吉林长春130022

出　　处：《中国塑料》2010年第10期81-84,共4页China Plastics

摘　　要：考察了常用抗氧剂对聚甲基丙烯酸甲酯(PMMA)热氧化稳定性的影响。结果表明,抗氧剂的加入可以很好地提高PMMA热氧化稳定性。单独使用一种抗氧剂时,随着抗氧剂添加量(最大添加量为3‰)的增大,PMMA的起始分解温度和最大分解速率温度成线性增大趋势。主抗氧剂BHT和辅助抗氧剂DLTDP复配效果相对较好,最佳配比为1/2。主抗氧剂主要影响起始分解温度,而辅助抗氧剂主要影响最大分解速率温度,添加量与温度基本成线性关系。The effect of antioxidant on thermal oxidation stability of polymethyl methacrylate （PMMA） was systematically studied by thermogravimetric analysis. It was indicated that the addition of antioxidants could effectively improve thermal oxidation stability of PMMA. The initial decomposition temperature and maximum decomposition rate temperature increased linearly with antioxidant loading （up to 3 ‰）. The main antioxidant BHT was effective for the initial decomposition temperature and the assistant antioxidant DLTDP was effective for the maximum decomposition rate temperature. The optimal weight ratio of the main and assistant antioxidants was 1/2.

关 键 词：聚甲基丙烯酸甲酯 抗氧剂 热稳定性 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]