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Poly(butylene terephthalate/carbon nanotubes nanocomposites Part II. Structure and properties

机译：聚对苯二甲酸丁二酯/碳纳米管纳米复合材料第二部分结构和性能

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摘要

The properties of poly(butylene terephthalate) (PBT) based nanocomposites filled with MWCNTs (multiwall carbon nanotubes) and epoxy peroxide functionalized MWCNTs (EpMWCNTs) have been studied. The analysis was focused on the influence of EpMWCNTs on the phase structure, thermal, mechanical and electrical properties of synthesized materials. Functionalized MWCNTs were observed to be highly dispersed and well integrated in the PBT matrix. Obtained results demonstrate that the incorporation of EpMWCNTs into the PBT matrix yields materials of enhanced thermo-oxidative stability. It was found that the crystallization temperature for all the obtained nanocomposites is slightly higher than that for the neat polymer. Increasing the concentration of nanofiller in both MWCNT and EpMWCNT systems improved the mechanical properties Young's modulus, tensile strength and fracture strain. The electrical conductivity of nanocomposites decreased due to the functionalization of MWCNTs with epoxy peroxide.
机译：研究了填充有MWCNTs（多壁碳纳米管）和环氧过氧化物官能化的MWCNTs（EpMWCNTs）的聚对苯二甲酸丁二酯（PBT）基纳米复合材料的性能。分析的重点是EpMWCNT对合成材料的相结构，热，机械和电性能的影响。观察到功能化的MWCNT高度分散并很好地整合在PBT基质中。获得的结果表明，将EpMWCNT掺入到PBT基质中会产生具有增强的热氧化稳定性的材料。发现所有获得的纳米复合材料的结晶温度都比纯聚合物的结晶温度稍高。 MWCNT和EpMWCNT系统中纳米填料浓度的增加改善了机械性能的杨氏模量，拉伸强度和断裂应变。纳米复合材料的电导率下降是由于MWCNTs被环氧过氧化物官能化了。

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