中文摘要：

制备了具有环氧丙基侧链的对位芳纶（PPTA-ECH）和间位芳纶（PMIA-ECH），并将其用做对位芳纶（PPTA）织物／环氧树脂复合材料中PPTA织物的涂覆剂。采用场发射扫描电子显微镜（FEsEM）及XPS等方法对PPTA织物表面的PPTA-ECH涂层结构进行了表征。考察了PPTA-ECH和PMIA-ECH涂覆的PPTA织物／环氧树脂复合材料的层间剪切强度和面内剪切强度，并与未经涂覆的PPTA织物复合材料的性能作比较。结果表明，PPTA-ECH和PMIA-ECH可显著改善PPTA织物和环氧树脂之间的界面性能。涂覆了PPTA-ECH及PMIA-ECH的PPTA织物／环氧树脂复合材料的层间剪切强度（ILSS）比未经涂覆的复合材料分别提高了26．20％和14．76％，面内剪切强度（ISS）分别提高了26．98％和11．86％。由于PPTA-ECH对PPTA纤维具有更强的亲和能力，因此PPTA-ECH在层间剪切强度和面内剪切强度方面的增强效果均优于PMIA-ECH。对PPTAECH在PPTA纤维表面铺展与吸附及对复合材料的增强机理也进行了初步探讨。作为新型涂覆剂，PPTA-ECH在对位芳纶复合材料的开发应用方面具有潜在的应用前景。

英文摘要：

Epichlorohydrin modified poly （ p-phenylene terephthamide） （ PPTA-ECH ） and poly （ m-phenylene isophthalamide） （PMIA-ECH） were prepared and used as coating agents for PPTA fabric in PPTA fabric/epoxy resin composites. Field emission scanning electron microscopy （FE-SEM）, Fourier Transform Infrared Spectroscopy （FTIR）, and x-ray photoelectron spectroscopy （XPS） were used to characterize the structure of PPTA-ECH coating on the surface of PPTA fibers. The interlaminar shear strength （ILSS） and in-plane shear strength （ISS） of composites of PPTA-ECH and PMIA-ECH coated PPTA fabric/epoxy resins were investigated, which were compared with that of the pristine PPTA fabric/epoxy resin. The results showed that the coatings of PPTA-ECH and PMIA-ECH can significantly improve the interfacial properties of PPTA fabric with epoxy resins. The ILSS values of PPTA-ECH and PMIA-ECH coated PPTA fabric/epoxy resin composites were increased by 26.20% and 14.76%, and the ISS values of them were increased by 26.98% and 11.86%, respectively, compared with that of pristine PPTA fabric/epoxy resin. The reinforcement effects of PPTA-ECH on ILSS and ISS are better than those of PMIA-ECH due to the stronger affinity of the former for PPTA fiber. The spreading and adsorption of PPTA-ECH on the surface of PPTA fibers and its reinforcement mechanism for PPTA fabric/epoxy resin composite were discussed. Thus PPTA-ECH has great potential as new coating agent for the fabrication of PPTA materials.