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首页> 外文期刊>Journal of Applied Polymer Science >Study of PET/PP/TiO2 Microfibrillar-Structured Composites, Part 2: Morphology and Mechanical Properties
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Study of PET/PP/TiO2 Microfibrillar-Structured Composites, Part 2: Morphology and Mechanical Properties

机译：PET / PP / TiO2微纤维结构复合材料的研究，第2部分：形态和力学性能

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摘要

Uncompatibilized and compatibilized (polypropylene grafted maleic anhydride as compatibilizer) polyethylene terephthalate (PET)/polypropylene (PP)/TiO2 microfibrillar composites (MFC) were prepared by injection molding of the pelletized PET/PP/TiO2 drawn strands. The morphology of PET fibrils and the distribution of TiO2 particles in the composites were examined. After injection molding the preferential location of TiO2 particles is still preserved. Because of the reinforcement effect of PET fibrils, the tensile properties and impact strength of the PET/PP MFC are improved compared with. the pure PP. Incorporation of TiO2 particles results in decrease of both tensile strength and impact strength of the composites. However, the compatibilized PET/PP/TiO2 MFC demonstrate better mechanical properties compared with the uncompatibilized ones. DMA analysis shows that the glass transition temperature (T-g) of PET in the uncompatibilized PET/PP/TiO2 MFC and the T-g of PP in the compatibilized PET/PP/TiO2 MFC are elevated by about 2 degrees C. The elevation of T-g is attributed to the preferential location of TiO2 particles in the composites.
机译：不相容的和相容的（聚丙烯接枝的马来酸酐作为相容剂）聚对苯二甲酸乙二醇酯（PET）/聚丙烯（PP）/ TiO2微原纤复合材料（MFC）是通过将粒状的PET / PP / TiO2拉伸丝注塑成型而制备的。研究了PET原纤维的形貌和复合材料中TiO2颗粒的分布。注射成型后，仍保留了TiO2颗粒的优先位置。由于PET原纤维的增强作用，与之相比，改善了PET / PP MFC的拉伸性能和冲击强度。纯PP。 TiO 2颗粒的引入导致复合材料的拉伸强度和冲击强度降低。但是，与不相容的PET / PP / TiO2 MFC相比，相容的PET / PP / TiO2 MFC表现出更好的机械性能。 DMA分析表明，不相容的PET / PP / TiO2 MFC中PET的玻璃化转变温度（Tg）和不相容的PET / PP / TiO2 MFC中PP的Tg升高了约2摄氏度。 TiO2颗粒在复合材料中的优先位置。

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