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首页> 外文期刊>Journal of Applied Polymer Science >Thermal, Mechanical, and Dielectric Properties of Polystyrene/Expanded Graphite Nanocomposites
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Thermal, Mechanical, and Dielectric Properties of Polystyrene/Expanded Graphite Nanocomposites

机译：聚苯乙烯/膨胀石墨纳米复合材料的热，机械和介电性能

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摘要

We herewith report the thermal, mechanical (modulus), and dielectric properties of polystyrene (PS)/expanded graphite (EG) nanocomposites fabricated by a simple technique of dispersing EG (Lip to 2.5 vol %) in PS matrix Via solution Method followed by hot pressing. The thermal stability and char yield of the nanocomposites are improved marginally. The modulus, electrical conductivity dielectric constant, and dielectric loss tangent of the nanocomposites are significantly increased with EG content. The modulus of the nanocomposites increases by about twofold at 30 degrees C compared with that of pure PS. The dielectric constant and the loss tangent of nanocomposites are increased Lip to 13-fold and 200-fold compared with that of pure PS, respectively, at 1 MHz and varied with frequency. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2071-2077, 2009
机译：我们在此报告通过一种简单的将EG（Lip降至2.5 vol％）分散在PS基质中的简单技术通过溶液法接着热法制备的聚苯乙烯（PS）/膨胀石墨（EG）纳米复合材料的热，机械（模量）和介电性能紧迫。纳米复合材料的热稳定性和炭收率略有提高。纳米复合材料的模量，电导率介电常数和介电损耗正切随EG含量的增加而显着增加。与纯PS相比，在30摄氏度时，纳米复合材料的模量增加了大约两倍。与纯PS相比，纳米复合材料的介电常数和损耗角正切分别在1 MHz时增加到13倍和200倍，并随频率变化。 （C）2008 Wiley Periodicals，Inc. J Appl Polym Sci 111：2071-2077，2009

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