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CBT/PA6共混物等温及非等温结晶动力学

DOI: 10.3969/j.issn.1006-7043.201405050

Keywords: 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

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Abstract:

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。

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