改性芳纶/聚苯胺复合导电纤维的制备

Preparation of Modified Aramid/Polyaniline Composite Conductive Fibers

摘要: 以聚对苯二甲酰对苯二胺（简称芳纶，PPTA）纤维为基材，使用环氧氯丙烷（ECP）对PPTA表面进行有机修饰，得到了ECP改性的PPTA纤维(ECP-PPTA)，然后使苯胺单体在ECP-PPTA表面接枝聚合，制备了ECP-PPTA/PANI复合导电纤维。用傅里叶变换红外分光光度计（FT-IR）、扫描电子显微镜（SEM）、热重分析仪（TGA）及X射线衍射分析仪 (XRD)等分析测试方法对ECP PPTA及ECP-PPTA/PANI复合导电纤维进行了表征。结果表明：PPTA经ECP改性后，PANI成功接枝在PPTA表面，制备的ECP-PPTA/PANI复合导电纤维的电阻率低于PPTA/PANI纤维的，其室温电阻率最低为0.32 MΩ·m。

Abstract: Composite conductive fibers ECP PPTA/PANI were prepared by the encapsulation of poly p-phenyleneterephthamide (PPTA) template with polyaniline (PANI) after the surface modification with epichlorohydrin (ECP) on the surface of PPTA fibers. Moreover, the modified fibers (ECP-PPTA) and ECP PPTA/PANI were studied by Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). The thermal stability was studied by the Thermo Gra vimetric Analyzer (TGA). Results showed that PANI was grafted on the surface of PPTA successfully, and the resistivity of ECP-PPTA/PANI were better than PPTA/PANI composite conductive fibers, and the lowest room temperature resistivity of ECP-PPTA/PANI was about 0.32 MΩ·m.