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采用热压工艺制备芳砜纶纤维(polysulfonamide fiber,PSAF)/聚四氟乙烯(polytetrafluoroethylene,PTFE)复合材料,然后采用热重分析仪(thermal gravimetric analyzer,TGA)、差示扫描量热(differential scanning calorimetry,DSC)法、X射线衍射(X-ray diffraction,XRD)、傅里叶转换红外(Fourier transform infrared,FTIR)、热场发射扫描式电子显微镜(thermal field scanning electron microscope,TFSEM)等方法研究了PSAF对所制备复合材料的力学性能、热稳定性、结构和微观形貌等的影响.研究结果表明,PSAF的加入提高了复合材料的力学性能,使其具有优异的热稳定性能.适量的PSAF较好地分散在PTFE基体中,PSAF与PTFE基体的界面结合较好,且同时存在物理与化学结合.
The polysulfonamide fiber (PSAF) / polytetrafluoroethylene (PTFE) composites were prepared by hot pressing process, and then were characterized by thermal gravimetric analyzer (TGA), differential scanning calorimetry calorimetry, DSC), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and thermal field scanning electron microscopy (TFSEM) The effect of PSAF on the mechanical properties, thermal stability, structure and microstructure of the composites was studied.The results show that the addition of PSAF improves the mechanical properties of the composites, resulting in excellent thermal stability. PSAF dispersed well in the PTFE matrix, PSAF and PTFE matrix interface is better, and there is a combination of physical and chemical.