Processing and mechanical behavior of carbon black graded rubber compounds

Authors

  • Sandeep S. Ahankari,

    1. Materials Science Programme, Advanced Nanoengineering Materials Laboratory, Indian Institute of Technology Kanpur, Kanpur 208016, India
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  • Kamal K. Kar

    Corresponding author
    1. Materials Science Programme, Advanced Nanoengineering Materials Laboratory, Indian Institute of Technology Kanpur, Kanpur 208016, India
    2. Department of Mechanical Engineering and Materials Science Programme, Advanced Nanoengineering Materials Laboratory, Indian Institute of Technology Kanpur, Kanpur 208016, India
    • Materials Science Programme, Advanced Nanoengineering Materials Laboratory, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Abstract

Functionally graded rubber compounds (FGRCs) were prepared by construction based method. The matrix used was natural rubber (NR). Amorphous carbon black (N-330) was used as grading material. The gradation of nanoparticles in a rectangular geometry comprised the variation of particle volume fraction along thickness direction. Its performance was evaluated for structural application through various mechanical and surface properties like tensile strength, modulus, tear strength, elongation at break, hardness, fracture surface by scanning electron microscopy, etc. At the same percentage of nanofiller loading, FGRCs show enhanced properties, i.e., modulus and tear strength (in some grades) compared to uniformly dispersed rubber compounds (UDRCs). Modulus of FGRCs, for a given particular stacking sequence of the layers, increases as much as by 275% compared to UDRCs. The ultimate properties like tensile strength and elongation at break made up for the modulus enhancement that decreases to as minimum as 50 and 80%, respectively. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

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