Rubber composites based on graphene nanoplatelets, expanded graphite, carbon nanotubes and their combination: A comparative study

Amit Das, Gaurav R. Kasaliwal, René Jurk, Regine Boldt, Dieter Fischer, Klaus Werner Stöckelhuber, Gert Heinrich

    Research output: Contribution to journalArticleScientificpeer-review

    182 Citations (Scopus)

    Abstract

    Solution styrene butadiene rubber (S-SBR) composites reinforced with graphene nanoplatelets (GnPs), expanded graphite (EG), and multiwalled carbon nanotubes (MWCNTs) were prepared and the electrical and various mechanical properties were compared to understand the specific dispersion and reinforcement behaviours of these nanostructured fillers. The electrical resistivity of the rubber composite gradually decreased with the increase of filler amount in the composite. The electrical percolation behaviour was found to be started at 15. phr (parts per hundred rubber) for GnP and 20. phr for EG filled systems, whereas a sharp drop was found at 5. phr for MWCNT based composites. At a particular filler loading, dynamic mechanical analysis and tensile test showed a significant improvement of the mechanical properties of the composites comprised of MWCNT followed by GnP and then EG. The high aspect ratio of MWCNT enabled to form a network at low filler loading and, consequently, a good reinforcement effect was observed. To investigate the effect of hybrid fillers, MWCNT (up to 5. phr) were added in a selected composition of EG based compounds. The formation of a mixed filler network showed a synergistic effect on the improvement of electrical as well as various mechanical properties.

    Original languageEnglish
    Pages (from-to)1961-1967
    Number of pages7
    JournalComposites Science and Technology
    Volume72
    Issue number16
    DOIs
    Publication statusPublished - 16 Nov 2012
    Publication typeA1 Journal article-refereed

    Keywords

    • A. Hybrid composites
    • A. Particle-reinforced composites
    • B. Mechanical properties
    • B. Synergism
    • D. Dynamic mechanical thermal analysis (DMTA)

    ASJC Scopus subject areas

    • General Engineering
    • Ceramics and Composites

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