制备了分散相呈球状微粒形貌的液晶聚合物/尼龙6(LCP/PA6)共混体系,选用离聚物磺化聚苯乙烯锌盐(Zn-SPS)和反应性嵌段共聚物苯乙烯-马来酸酐共聚物(SMA)作为体系的增容剂,探讨了在相间相互作用得以改善时,利用LCP微球改善LCP/尼龙6共混体系韧性的可能性.试样受拉后的形貌观察表明,在增容体系中,LCP微球很好地镶嵌在尼龙6基体中,粒子脱落的空洞发生了较大的形变.力学性能测试结果表明,LCP的加入使材料的拉伸强度低于纯尼龙6,加入增容剂后共混材料拉伸强度有所提高,其中LCP/PA6(质量比10/90)共混体系增容后的拉伸强度与纯尼龙6相当.所研究的增容体系的拉伸断裂吸收能均比未增容体系有所增加.其中,当LCP的质量分数为4%时,Zn-SPS增容体系的拉伸断裂吸收能比未增容体系和纯尼龙6分别增加了12%和62%;当LCP的质量分数为10%时,SMA增容体系的拉伸断裂吸收能比未增容体系和纯尼龙6分别增加了46%和55%.表明在适当条件下,利用LCP微球可以在保持共混体系的拉伸强度的同时提高材料的韧性.
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