CBT/PA6共混物等温及非等温结晶动力学  

Isothermal and non-isothermal crystallization kinetics of CBT/PA6 blends

作　　者：董红星[1] 赵庆晨[1] 佟丽莉[2] 刘文婧[1] 张进[1,3] 杨晓光[1] 刘立佳[1] 张春红[1] 李峻青[1] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院高分子材料研究中心,黑龙江哈尔滨150001 [2]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001 [3]中国航天科工集团第六研究院359厂,内蒙古呼和浩特010000

出　　处：《哈尔滨工程大学学报》2015年第7期1006-1010,共5页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(21076049;20976032);中央高校基本科研业务费基金资助项目(HEUCFT1009)

摘　　要：利用溶液共混法制备了尼龙6(PA6)/对苯二甲酸丁二醇酯(CBT)的共混物,研究了PA6和CBT/PA6体系粘度随温度的变化、结晶形态以及等温和非等温结晶动力学。流变结果表明,CBT的加入可以明显降低PA6的粘度。DSC结果表明:等温结晶时,加入CBT后,PA6的Avrami指数n、t1/2、tmax均降低,结晶速率G提高;非等温结晶时,共混物的Jeziorny指数n有所降低,相比于PA6,结晶速率加快。POM结果表明:CBT的加入能有效地增加PA6的成核密度。可见CBT有望成为PA6结晶过程促进剂。This paper studied the blends that were produced by the way of solution mixing of nylon 6（ PA6） and cyclic butylenes terephthalate（ CBT）,the viscosity of the PA6 and CBT / PA6 blends changing with temperature,the crystalline form,and the isothermal and non-isothermal crystallization kinetics. The rheological results showed that with the addition of CBT it could significantly reduce the viscosity of PA6. The DSC results showed that in isothermal crystallization the Avrami indices n,t1 / 2,tmaxof PA6 were reduced while the crystallization rate G increased as the CBT was added into the blend. In non-isothermal crystallization,the blend＇s Jeziorny index n was reduced and comparing with PA6 the crystallization rate was faster. Based on the studies in this paper,CBT is expected to become an accelerator,which can effectively increase nucleation density of PA6.

关 键 词：尼龙6 对苯二甲酸丁二醇酯(CBT) 粘度 等温结晶动力学 非等温结晶动力学 晶体形态 

分 类 号：O631[理学—高分子化学]