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Journal of Materials Science

, Volume 47, Issue 5, pp 2421–2433 | Cite as

Conductive carbon black-filled ethylene acrylic elastomer vulcanizates: physico-mechanical, thermal, and electrical properties

  • Bibhu Prasad Sahoo
  • Kinsuk Naskar
  • Deba Kumar Tripathy
Article

Abstract

The effect of conductive carbon black (CCB) on the physico-mechanical, thermal, and electrical properties have been investigated by various characterization techniques. Physico-mechanical properties of the vulcanizates were studied with variation of filler loading, which revealed that the tensile strength increased up to 20 phr (parts per hundred rubber) CCB loading, whereas at higher filler loading it decreased marginally. Furthermore, tensile modulus, tear strength, and hardness gradually increased with increase in filler loading. The compression set and abrasion loss decreased with increasing CCB loading. The bound rubber content (Bdr) of unvulcanized rubber was found to increase significantly with increasing CCB content. The crosslink density increased, whereas the swelling decreased with CCB loading. The thermal stability of the vulcanizates evaluated by thermogravimetric analysis (TGA) showed a minor increment with increase in CCB content. It is observed from the dynamic mechanical thermal analysis (DMTA) that the storage modulus (E′), loss modulus (E″), and glass transition temperature (T g) of ethylene acrylic elastomer (AEM) matrix increased by incorporation of CCB. The dielectric relaxation characteristics of AEM vulcanizates such as dielectric permittivity (ε′), electrical conductivity (σ ac), and electric moduli (M′ and M″) have been studied as a function of frequency (101 to 106 Hz) at different filler loading. The variation of ε′ with frequency and filler loading was explained based on the interfacial polarization of the fillers within a heterogeneous system. The ε′ increased with increasing the CCB loading and it decreased with applied frequency. The frequency dependency of σ ac was investigated using conduction path theory and percolation threshold limit. The σ ac increased with increase in both CCB concentration and applied frequency. The M′ increased with applied frequency, however, it decreased above 30 phr filler. The M″ peak shifted towards higher frequency region and above 20 phr filler loading the peaks were not observed within the tested frequency region. The electromagnetic interference shielding effectiveness (EMISE) was studied in the X-band frequency region (8–12 GHz), which significantly improved with increase in CCB loading.

Keywords

Crosslink Density Filler Loading Dynamic Mechanical Thermal Analysis Electric Modulus Rubber Matrix 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

The authors would like to gratefully acknowledge the financial assistance supported by the Board of Research in Nuclear Sciences (BRNS), India to carry out the research work. Contract grant sponsor: Board of Research in Nuclear Sciences (BRNS), Department of Atomic Energy (DAE), Mumbai, India; contract grant number: 2008/35/8/BRNS/3096 dated 23/03/2009

References

  1. 1.
    Bokobza L (2007) Polymer 48:4907CrossRefGoogle Scholar
  2. 2.
    Sau KP, Chaki TK, Khastgir D (1999) J Appl Polym Sci 71:887CrossRefGoogle Scholar
  3. 3.
    Sridhar V, Choudhary RNP, Tripathy DK (2006) J Appl Polym Sci 102:1809CrossRefGoogle Scholar
  4. 4.
    Mahapatra SP, Sridhar V, Chaudhary RNP, Tripathy DK (2007) Polym Eng Sci 47:984CrossRefGoogle Scholar
  5. 5.
    Nanda M, Tripathy DK (2008) Express Polym Lett 2:855CrossRefGoogle Scholar
  6. 6.
    Rahaman M, Chaki TK, Khastgir D (2011) J Mater Sci 46:3989. doi: 10.1007/s10853-011-5326-x CrossRefGoogle Scholar
  7. 7.
    Das NC, Chaki TK, Khastgir D (2002) Carbon 40:807CrossRefGoogle Scholar
  8. 8.
    Mahapatra SP, Sridhar V, Chaudhary RNP, Tripathy DK (2007) Polym Compos 28:657CrossRefGoogle Scholar
  9. 9.
    Tanrattanakul V, Bunchuay A (2007) J Appl Polym Sci 105:2036CrossRefGoogle Scholar
  10. 10.
    Li ZH, Zhang J, Chen SJ (2008) Express Polym Lett 2:695CrossRefGoogle Scholar
  11. 11.
    Wu Y-T, Stewart MA (2010) Ethylene acrylic elastomers. Encyclopedia of polymer science and technology. Interscience Wiley, New YorkGoogle Scholar
  12. 12.
    Karasek L, Sumita M (1996) J Mater Sci 31:281. doi:  10.1007/BF01139141 CrossRefGoogle Scholar
  13. 13.
    Flory PJ, Rehner J (1943) J Chem Phys 11:512CrossRefGoogle Scholar
  14. 14.
    Huggins ML (1941) J Chem Phys 9:40CrossRefGoogle Scholar
  15. 15.
    Flory PJ (1941) J Chem Phys 9:660CrossRefGoogle Scholar
  16. 16.
    Kraus G (1963) J Appl Polym Sci 7:861CrossRefGoogle Scholar
  17. 17.
    Sridhar V, Gupta BR, Tripathy DK (2006) J Appl Polym Sci 10:715CrossRefGoogle Scholar
  18. 18.
    Roychoudhury A, De PP, Dutta NK, Choudhury N, Roychoydhury N, Haidar B, Vidal A (1993) Rubber Chem Technol 66:230CrossRefGoogle Scholar
  19. 19.
    Wolff S, Wang MJ (1992) Rubber Chem Technol 65:329CrossRefGoogle Scholar
  20. 20.
    Banik I, Bhowmick AK (2000) J Appl Polym Sci 76:2061CrossRefGoogle Scholar
  21. 21.
    Choi SS, Nah C, Jo BW (2003) Polym Int 52:1382CrossRefGoogle Scholar
  22. 22.
    Fukumori K, Kurauchi T, Kamigato O (1990) Polymer 31:713CrossRefGoogle Scholar
  23. 23.
    Kader MA, Bhowmick AK (2003) J Appl Polym Sci 89:1442CrossRefGoogle Scholar
  24. 24.
    Zhang J, Feng S, Ma Q (2003) J Appl Polym Sci 89:1548CrossRefGoogle Scholar
  25. 25.
    López-Manchado MA, Biagiotti J, Valentini L, Kenny JM (2004) J Appl Polym Sci 92:3394CrossRefGoogle Scholar
  26. 26.
    Psarras C, Manolakaki E, Tsangaris GM (2002) Composites 33:375CrossRefGoogle Scholar
  27. 27.
    Ku CC, Liepins R (1987) Chemical principles. Hanser Publishers, MunichGoogle Scholar
  28. 28.
    Yuan Q, Wu D (2010) J Appl Polym Sci 115:3527CrossRefGoogle Scholar
  29. 29.
    Li J, Kim J-K (2007) Compos Sci Technol 67:2114CrossRefGoogle Scholar
  30. 30.
    Jäger K-M, McQueen DH, Tchmutin IA, Ryvkina NG, Klüppel M (2001) J Phys 34:2699Google Scholar
  31. 31.
    Datta S, De SK, Kontos EG, Wefer JM, Wagner P, Vidal A (1996) Polymer 37:3431CrossRefGoogle Scholar
  32. 32.
    Patra A, Bisoyi DK (2010) J Mater Sci 45:5742. doi:  10.1007/s10853-010-4644-8 CrossRefGoogle Scholar
  33. 33.
    Xi Y, Bin Y, Chiang CK, Matsuo M (2007) Carbon 45:1302CrossRefGoogle Scholar
  34. 34.
    Lvovich VF, Smiechowski MF (2005) J Electroanal Chem 577:67CrossRefGoogle Scholar
  35. 35.
    Colarnerr NF, Saha TN (1992) IEEE Trans Instrum 41:291CrossRefGoogle Scholar
  36. 36.
    Das NC, Khastgir D, Chaki TK, Chakraborty A (2000) Composites 31:1069CrossRefGoogle Scholar
  37. 37.
    Ye L, Zhang Y, Wang Z (2007) J Appl Polym Sci 105:3851Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Bibhu Prasad Sahoo
    • 1
  • Kinsuk Naskar
    • 1
  • Deba Kumar Tripathy
    • 1
  1. 1.Rubber Technology CentreIndian Institute of TechnologyKharagpurIndia

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