Research Papers

The Effect of Exfoliated Graphite on the Thermal and Mechanical Properties of Dynamically Vulcanized Polystyrene/Styrene Butadiene Rubber Composites

[+] Author and Article Information
Ahmad Mousa

Department of Materials Engineering,
Faculty of Engineering,
Al Balqa Applied University,
Salt 19117, Jordan
e-mail: mousa@rocketmail.com

Gert Heinrich, Udo Wagenknecht

Leibniz-Institut für Polymerforschung
Dresden E. V.,
Hohe Strasse 6,
Dresden D-01069, Germany

Omar Arabeyat

Department of Computer Engineering,
Faculty of Engineering,
Al-Balqa Applied University,
Salt 19117, Jordan

1Corresponding author.

Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received October 1, 2016; final manuscript received June 13, 2017; published online August 9, 2017. Assoc. Editor: Antonios Kontsos.

J. Eng. Mater. Technol 140(1), 011002 (Aug 09, 2017) (5 pages) Paper No: MATS-16-1281; doi: 10.1115/1.4037169 History: Received October 01, 2016; Revised June 13, 2017

Exfoliated graphite (EG) was prepared from commercially available natural graphite flakes (NGF), through strong acid treatment followed by thermal shock at 950 °C. The EG sheets were characterized with respect to their thermal stability via thermogravimetric analysis (TGA) and Raman spectra. Their morphology and particle size were evaluated using scanning electron microscope (SEM) and particle size analyzer. The potential of EG as reinforcement on the mechanical and thermal properties of the dynamically vulcanized polystyrene/styrene butadiene rubber (PS/SBR) composites was evaluated. The influence of EG on the electrical properties of the composites was measured as well.

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Fig. 1

SEM micrographs of (a) NGF, (b) expanded graphite, and (c) exfoliated graphite

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Fig. 2

Raman spectra of NGF and EG

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Fig. 3

Expansion ratio of EG as compared to NGF

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Fig. 4

The average particle size as compared to the NGF

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Fig. 5

Mass-temperature thermograms of NGF and EG

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Fig. 6

DTA–temperature thermogram of NGF and EG

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Fig. 7

Impact energy of PS/SBR composites with NGF and EG

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Fig. 8

The effect of NGF and EG on flexural strength of PS/SBR composites

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Fig. 9

The effect of EG and NGF on the abrasion resistance of PS/SBR composites

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Fig. 10

DSC thermograms of PS/SBR composites filled with NGF and EG

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Fig. 11

The effect of NGF and EG on the electrical conductivity of PS/SBR composites



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