丙烯酸酯类抗氧剂对聚酰胺的热氧稳定作用  

The Thermal Stabilization Effect of Acrylate Antioxidant on Polyamide

作　　者：杨涛[1] 叶林[1] 舒颖[1] 

机构地区：[1]高分子材料工程国家重点实验室,四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2008年第3期98-101,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金重点项目(50533080)

摘　　要：采用丙烯酸酯类抗氧剂AL与主、辅抗氧剂复合构成三元复合稳定体系,利用其双官能团稳定机理,捕获聚合物降解产生的碳自由基,以进一步提高尼龙6热氧稳定性能。研究了抗氧剂AL对尼龙6的热氧稳定作用,结果表明,在130℃长期热氧老化过程中,抗氧剂AL的加入能有效抑制尼龙6黏度和分子量的降低,抑制其端羧基形成和含量的增加,提高尼龙6的热分解温度,并能有效延缓尼龙6冲击韧性的下降,获得较高的保留率。Acrylate antioxidant AL was applied to compound with the main and assist-antioxidant to form the complex stabilization system for the purpose of further improving the thermo-oxidative stability of PA6.The thermal stabilization effect of the antioxidant AL on PA6 was studied,and the results show that during the thermal oxidative aging at 130 ℃,the antioxidant AL can inhibit the decrease of the reduced viscosity and molecular weight of PA6 effectively,inhibit the formation and the increase of the content of end carboxyl group on the molecular chain,and improve the degradation temperature of PA6.It can also delay the decrease of the impact toughness of PA6,and the higher retention can be achieved.

关 键 词：尼龙6 丙烯酸酯类抗氧剂 热氧稳定性 

分 类 号：TQ314.245[化学工程—高聚物工业]