The kinetics of thermal degradation of PPES and PPESK(1/1) in nitrogen were studied at several heating rates by thermogravimetry analysis (TGA).
利用热失重（TGA）分析仪，氮气氛围中，多重加热扫描速率下的不定温法对PPESK（1/1）及PPES进行热分解动力学研究。
Because the bend performance can well reflect integrating mechanics performance of materials, thus the thesis studied and analyzed the bend performance of PPEK, PPES and their composites.
由于弯曲性能能够很好地反映材料的综合力学性能，所以本文对PPES和PPEK及其复合材料的高低温弯曲性能进行了研究分析。
Because the bend performance can well reflect integrating mechanics performance of materials, thus the thesis studied and analyzed the bend performance of PPEK, PPES and their composites.
由于弯曲性能能够很好地反映材料的综合力学性能，所以本文对PPES和PPEK及其复合材料的高低温弯曲性能进行了研究分析。
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