有机羧酸盐的合成及其改善PA 66抗黄变性与力学性能研究  

Synthesis and application of organic carboxylates for improving yellowing resistance and mechanical properties of PA 66

作　　者：庞沁彧 刘慧[1] 艾丽[1] 何正洋 龚剑兵 朱新生[1,3] 

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215021 [2]江苏文凤化纤集团有限公司,江苏南通226600 [3]南通纺织丝绸产业技术研究院,江苏南通226004

出　　处：《合成纤维工业》2016年第4期28-32,共5页China Synthetic Fiber Industry

基　　金：江苏省产学研前瞻性研究项目(BY2013043)

摘　　要：以有机羧酸、稀土或过渡金属为原料,采用水热法合成有机羧酸盐如丁烷四酸镧、丁烷四酸铈、丁烷四酸锌以及马来酸镧和硬脂酸镧,然后将有机羧酸盐用于改善聚己二酰己二胺(PA 66)的抗黄变性和力学性能。结果表明:有机羧酸盐中,羧基氧与稀土金属形成双齿螯合,与过渡金属锌则以单齿键合,稀土金属盐的热稳定性低于锌盐;有机羧酸盐均一定程度地改善了PA 66的抗黄变性,提高了PA 66的力学性能,但加快了PA 66主链热降解反应,PA 66热稳定性降低;丁烷四酸镧质量分数为10%时,其改性PA 66的黄变指数下降至16.1,抗黄变效果最好。Organic carboxylates , namely lanthanum , cerium and zinc butane tetracarboxylates , lanthanum maleate , lanthanum stearate, were synthesized by using organic carboxylic acid , rare earth and transitional metal as raw material via hydrothermal method and was applied to improve the yellowing resistance and mechanical properties of polyhexamethylene adipamide （ PA 66） . The results showed that the double-tooth chelating formed between carboxyl oxygen and rare earth in organic carboxylates when the single-tooth chelating formed between carboxyl oxygen and transitional metal;rare earth metal salt was lower than zinc salt in the thermal stability;the organic carboxylates all improved the yellowing resistance and mechanical properties of PA 66 in some de-gree, but accelerated the thermal degradation of the main molecular chain , thus decreasing the thermal stability of PA 66;and the yellowing index of PA 66 was decreased to 16.1 and the yellowing resistance was maximized as the mass fraction of lanthanum butane tetracarboxylates was 10%.

关 键 词：聚己二酰己二胺 水热法 有机羧酸盐 共混改性 热稳定性 抗黄变性 力学性能 

分 类 号：TQ342.12[化学工程—化纤工业]