采用DSC、WAXD、SEM及TGA研究了HDPE/PET共混体系在增容剂EVA及EAA作用下的结晶性,断口的形态结构及热稳定性.结果表明,EVA及EAA的加入使HDPE/PET体系中HDPE组分的熔融热焓降低,结晶度下降,但熔融峰位置和晶胞结构基本保持不变;从扫描电镜照片可以观察到EVA及EAA对共混体系具有一定的增容作用,且EAA的效果优于EVA;共混体系的热稳定性随EVA及EAA的加入有所下降,而EAA的下降幅度则远远小于EVA.
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