Abstract

The effect of hybrid filling of polyethylene terephthalate with short glass fibers in amount from 15 to 60 wt % and multi-walled carbon nanotubes in amount of 0.5 and 1.6 wt % on the structure, static and dynamic mechanical properties of composites produced by blending in a melt by the method of reactive extrusion was studied. It was shown that nanotubes initiate heterophase crystallization of the polymer matrix, which improves the transfer of stresses to the nanofiller and makes the main contribution to the reinforcing of both nano- and hybrid-filled composites. The elastic moduli of cast specimens increase upon stretching by 41–54% for nanocomposites and by 20–30% for hybrid-filled composites, and upon bending, by 5–18 and 16–21% compared to the initial and glass-filled polymer, respectively. It was demonstrated that the magnitude of the reinforcing effect is related to the orientation of the nano- and micro-filler and depends on the specimen production technology and on the test method.

中文翻译：

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多壁碳纳米管和玻璃短纤维混合填充聚对苯二甲酸乙二醇酯

摘要

聚对苯二甲酸乙二醇酯与15-60wt%的短玻璃纤维和0.5-1.6wt%的多壁碳纳米管混合填充对通过共混制备的复合材料的结构、静态和动态力学性能的影响研究了反应挤出法熔体。结果表明，纳米管引发聚合物基质的异相结晶，这改善了应力向纳米填料的转移，并对纳米和混合填充复合材料的增强做出了主要贡献。与初始和玻璃填充聚合物相比，浇铸试样的弹性模量在拉伸时纳米复合材料增加 41-54%，混合填充复合材料增加 20-30%，弯曲时增加 5-18% 和 16-21% ， 分别。