通过液相共混法制备了多壁碳纳米管/尼龙6（MWCNTs/PA6）复合材料,研究了不同MWCNTs改性方法及添加量对复合材料热性能和结晶性能的影响。利用场发射扫描电子显微镜（FESEM）、FTIR、DSC、XRD和TG对MWCNTs/PA6复合材料进行表征。结果表明：MWCNTs的加入提高了PA6的热稳定性,且胺功能化的MWCNTs（d-MWCNTs）表现尤为明显;当d-MWCNTs的质量分数为7.5%时,MWCNTs/PA6复合材料结晶度从48.09%提高到56.62%,聚合物大分子之间的缠绕度最低。
The composites of multiwalled carbon nanotubes/polyamide 6（MWCNTs/PA6） were fabricated by liquid blending method.The effects of the modification methods and contents of MWCNTs on the thermal and crystal properties of MWCNTs/PA6 composites were studied.The composites were characterized by FESEM,FTIR,DSC,XRD and TG.The results show that the thermal stability of PA6 can be improved through adding MWCNTs,especially amino-functionalized MWCNTs（d-MWCNTs）.When the mass fraction of d-MWCNTs reaches 7.5%,the crystallization degree of the MWCNTs/PA6 composites is improved from 48.09% to 56.62% and the entangled degree among polymer macromolecules is the lowest.
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