3,5-二叔丁基-4-羟基苯甲酸正丁酯的合成及其对HDPE的热氧老化性能研究  

Study of Synthesis of Butyl 3,5-Ditert-Butyl-4-Hydroxybenzoate and Its Thermooxidative Stability with HDPE

作　　者：朱林华[1,2] 李东旭[3] 陈嘉[1,2] 许林利[1,2] 连肖南[1,2] 许凯[1] 陈鸣才[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650 [2]中国科学院研究生院,北京100039 [3]郑州大学材料科学与工程学院,郑州450052

出　　处：《化学建材》2009年第6期1-2,33,共3页Chemical Materials for Construction

摘　　要：以3,5-二叔丁基-4-羟基苯甲酸和正丁醇为原料,采用酯化反应,合成了抗氧剂3,5-二叔丁基-4-羟基苯甲酸正丁酯,并通过测定熔点、红外光谱和核磁共振谱对其结构进行表征。制备了抗氧剂3,5-二叔丁基-4-羟基苯甲酸正丁酯和高密度聚乙烯(HDPE)的共混体系,通过差热扫描量热法,评价了抗氧剂3,5-二叔丁基-4-羟基苯甲酸正丁酯对HDPE树脂的热氧化降解行为。结果表明,3,5-二叔丁基-4-羟基苯甲酸正丁酯能明显提高HDPE的耐热氧性能。Antioxidant butyl 3,5-ditert -butyl-4-hydroxybenzoate was synthesized with 3,5-ditert-butyl-4-hydroxybenzoic zcid and n-butyl alcohol as raw materials by means of esterifying reaction. Structure of the antioxidant was characterized by way of determination of melting point ,infrared spectrometry and nuclear magnetic resonance spectroscopy. The antioxidant was blended with HDPE and thermooxidative degradation of the former on the latter was assessed by means of differential scanning calorimetry. Testing results showed that presence of butyl 3,5-ditert-butyl-4-hydroxybenzoate could effectively improve thermooxidative stability.

关 键 词：3 5-二叔丁基-4-羟基苯甲酸正丁酯 抗氧剂 HDPE 热氧化降解 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]