作　　者： ; ; ;

机构地区： 贵州大学化学与化工学院

出　　处： 《塑料》 2012年第2期75-77,共3页

摘　　要： 分别合成一元羧酸、二元羧酸、羟基羧酸镧热稳定剂,用刚果红法分别对其静态热稳定性进行了测试。结果表明:影响稀土镧热稳定剂性能的两个主要因素是稳定剂中稀土镧含量和有机酸碳链类型,直链二元酸镧热稳定剂的热稳定性优于直链一元酸镧和羟基羧酸镧;添加2.5%十三碳二元酸镧热稳定剂的PVC的热稳定时间达到45 min以上。 New lanthanum-heat stabilizers synthesized with monocarboxylic acid,dicarboxylic acid and hydroxy carboxylic acid, the thermal stability of these heat stabilizers tested by Congo red method. As the result, the most important effects of lanthanum-heat stabilizer properties were the content of lanthanum and the length of carbon chain, and linear-chain dicarboxylic acid showed better stability than monocarboxylic acid and hydroxycarboxylic acid. When the additive amount was up to 2.5 % , the hear stability of PVC could be improved to 45 min, which added with the lanthanum-heat stabilizer prepared by tridecadianoic acid.

关 键 词： 热稳定剂 一元羧酸 羧酸镧 二元羧酸 羟基羧酸

领　　域： [化学工程]