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Appl. Sci. 2015, 5(4), 1196-1210; doi:10.3390/app5041196

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

1
Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
2
Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung City 40601, Taiwan
3
Office of Physical Education and Sports Affairs, Feng Chia University, Taichung 407, Taiwan
4
Department of Aerospace and Systems Engineering, Feng Chia University, Taichung City 40724, Taiwan
5
Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
6
School of Chinese Medicine, China Medical University, Taichung City 40402, Taiwan
7
Department of Fashion Design, Asia University, Taichung City 41354, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Wen-Hsiang Hsieh
Received: 23 September 2015 / Revised: 29 October 2015 / Accepted: 30 October 2015 / Published: 13 November 2015
View Full-Text   |   Download PDF [3418 KB, uploaded 13 November 2015]   |  

Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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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