作　　者： ; ; ; ; ;

机构地区： 暨南大学生命科学技术学院化学系

出　　处： 《化学研究与应用》 2004年第6期757-760,共4页

摘　　要： 胶乳法氯化天然橡胶CNR经紫外光老化、热氧老化实验、化学分析、紫外光谱分析和热分析,结果表明:产品较溶液法光稳定性稍差,加入0 4%(质量百分比)的紫外线吸收剂AUI(二苯甲酮类)、AUII(苯并三唑类)和极少量的抗氧剂,可显著提高抗热氧老化性能。最佳配方为0 2%/0 5%(质量百分比)AOI(酚类抗氧剂)与AOIII(亚磷酸酯类抗氧剂)并用,或加入0 2%(质量百分比)的AOI。 The effect of photo,thermoxidation on the stability of chlorinated natural rubber(CNR) from latex was analyzed by UV photoactive aging experiment,thermal air-aging experiment,chemical analysis,UV spectroscopy analysis and thermal analysis.The result shows that:the photo-stability of CNR from latex is slightly poorer than that of CNR from solution.If there is a special demand of photo stability on CNR from latex,adding 0.4%(in mass) of AUI (benzophenone) or AUII(benzotriazole) is available.The anti-thermo-oxidative property of CNR from latex could be increased greatly by adding a little antioxidant.The best systems are(1)0.2%/0.5%(in mass) AOI/AOIII (phenate antioxidant / phosphite antioxidant);(2)0.2%(in mass) AOI (phenate antioxidant).

关 键 词： 氯化天然橡胶 光稳定性 热氧稳定性

领　　域： [理学] [理学] [理学] [理学]