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首页> 外文期刊>Journal of Applied Polymer Science >Processing influence on dielectric, mechanical, and electrical properties of reduced graphene oxide-TPU nanocomposites
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Processing influence on dielectric, mechanical, and electrical properties of reduced graphene oxide-TPU nanocomposites

机译：减少石墨烯氧化物 - TPU纳米复合材料的介质，机械和电性能的处理影响

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摘要

Two different reduced graphene oxides (rGOs) with similar concentration of oxygen and defects and differences in exfoliation were prepared to produce the rGO/thermoplastic polyurethane nanocomposites by solution blending (SB) and melt compounding (MC). Morphology, electrical, and dielectric properties were studied. Large agglomerates have been observed for the composites produced by SB and discrete and low agglomerated rGO particles in the case on the composites produced by MC. These morphological differences justify the observations in hardness, electrical conductivity, and even in the dielectric properties. The composites do not follow Jonscher's universal power law (UPL) and a linear trend between UPL factors (Log A vs n) has been observed for composites produced by SB, however, no trend is observed in the composites produced by MC, being the first time observed. Differences in the tunneling effect and breakage of H-bonds within the polymer can be suggested from the dielectric relaxation characterization. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47220.
机译：制备具有相似浓度氧气和缺陷浓度的两种不同的石墨烯氧化物（RGOS），并制备剥离的差异以通过溶液混合（Sb）和熔融配合（MC）制备RGO /热塑性聚氨酯纳米复合材料。研究了形态学，电气和介电性质。对于通过MC产生的复合材料的壳体中的Sb和离散和低聚的RGO颗粒产生的复合材料已经观察到大凝聚物。这些形态学差异证明了硬度，导电性，甚至在介电性质中的观察结果。复合材料不遵循Jonscher的通用权力法（上面），并且已经观察到由Sb产生的复合材料观察到的上因子（Log A VS N）之间的线性趋势，但是，在MC产生的复合材料中没有观察到趋势，是第一个观察到的时间。可以从介电弛豫表征提出聚合物内隧道效应和H键破损的差异。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47220。

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