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采用加入第三单体参与共聚的本体改性方式,将ODA引入PIPD的分子结构中,成功地制备了PIPD-ODA复合纤维。与PIPD纤维相比,PIPD-ODA复合纤维具有更优异的力学性能。用傅立叶红外光谱(FI-IR),广角X射线衍射(WAXD)对复合纤维进行了结构表征,采用扫描电子显微镜(SEM)观察了表观形貌。力学性能测试结果表明,PIPD-ODA复合纤维与相同条件下制备的PIPD纤维相比,拉伸强度提高了23.3%,拉伸模量提高了27.6%。
Adopting the modification of the third monomer to copolymerize the bulk, ODA was introduced into the molecular structure of PIPD to successfully prepare PIPD-ODA composite fiber. Compared with PIPD fiber, PIPD-ODA composite fiber has more excellent mechanical properties. The composite fibers were characterized by Fourier transform infrared spectroscopy (FI-IR) and wide-angle X-ray diffraction (WAXD). The morphology of the composite fibers was observed by scanning electron microscopy (SEM). The mechanical properties of the PIPD-ODA composite fibers show that the tensile strength increases by 23.3% and the tensile modulus increases by 27.6% compared with the PIPD fibers prepared under the same conditions.