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Open AccessArticle

Polypropylene/Graphene and Polypropylene/Carbon Fiber Conductive Composites: Mechanical, Crystallization and Electromagnetic Properties

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Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
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Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung City 40601, Taiwan
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Office of Physical Education and Sports Affairs, Feng Chia University, Taichung 407, Taiwan
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Department of Aerospace and Systems Engineering, Feng Chia University, Taichung City 40724, Taiwan
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Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
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School of Chinese Medicine, China Medical University, Taichung City 40402, Taiwan
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Department of Fashion Design, Asia University, Taichung City 41354, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Wen-Hsiang Hsieh
Appl. Sci. 2015, 5(4), 1196-1210; https://doi.org/10.3390/app5041196
Received: 23 September 2015 / Revised: 29 October 2015 / Accepted: 30 October 2015 / Published: 13 November 2015
This study aims to examine the properties of composites that different carbon materials with different measurements can reinforce. Using a melt compounding method, this study combines polypropylene (PP) and graphene nano-sheets (GNs) or carbon fiber (CF) to make PP/GNs and PP/CF conductive composites, respectively. The DSC results and optical microscopic observation show that both GNs and CF enable PP to crystalize at a high temperature. The tensile modulus of PP/GNs and PP/CF conductive composites remarkably increases as a result of the increasing content of conductive fillers. The tensile strength of the PP/GNs conductive composites is inversely proportional to the loading level of GNs. Containing 20 wt% of GNs, the PP/GNs conductive composites have an optimal conductivity of 0.36 S/m and an optimal EMI SE of 13 dB. PP/CF conductive composites have an optimal conductivity of 106 S/m when composed of no less than 3 wt% of CF, and an optimal EMI SE of 25 dB when composed of 20 wt% of CF. View Full-Text
Keywords: polypropylene; graphene nano-sheets; carbon fibers; conducting composites; EMIs polypropylene; graphene nano-sheets; carbon fibers; conducting composites; EMIs
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Huang, C.-L.; Lou, C.-W.; Liu, C.-F.; Huang, C.-H.; Song, X.-M.; Lin, J.-H. Polypropylene/Graphene and Polypropylene/Carbon Fiber Conductive Composites: Mechanical, Crystallization and Electromagnetic Properties. Appl. Sci. 2015, 5, 1196-1210.

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