Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Comparison Study on Reinforcement Behaviors of Functional Fillers in Nitrile Rubber Composites

  • Seong, Yoonjae (Department of Polymer-Nano Science and Technology and Department of Bionanotechnology and Bioconversence Engineering, Jeonbuk National University) ;
  • Lee, Harim (Department of Polymer-Nano Science and Technology and Department of Bionanotechnology and Bioconversence Engineering, Jeonbuk National University) ;
  • Kim, Seonhong (Department of Polymer-Nano Science and Technology and Department of Bionanotechnology and Bioconversence Engineering, Jeonbuk National University) ;
  • Yun, Chang Hyun (Department of Polymer-Nano Science and Technology and Department of Bionanotechnology and Bioconversence Engineering, Jeonbuk National University) ;
  • Park, Changsin (Department of Polymer-Nano Science and Technology and Department of Bionanotechnology and Bioconversence Engineering, Jeonbuk National University) ;
  • Nah, Changwoon (Department of Polymer-Nano Science and Technology and Department of Bionanotechnology and Bioconversence Engineering, Jeonbuk National University) ;
  • Lee, Gi-Bbeum (Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology)
  • Received : 2020.11.02
  • Accepted : 2020.12.04
  • Published : 2020.12.31
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Abstract

To investigate the reinforcing effects of functional fillers in nitrile rubber (NBR) materials, high-structure carbon black (HS45), coated calcium carbonate (C-CaCO3), silica (200MP), and multi-walled carbon nanotubes (MWCNTs) were used as functional filler, and carbon black (SRF) as a common filler were used for oil-resistant rubber. The curing and mechanical properties of HS45-, 200MP-, and MWCNT-filled NBR compounds were improved compared to those of the SRF-filled NBR compound. The reinforcing effect also increased with a decrease in the particle size of the fillers. The C-CaCO3-filled NBR compound exhibited no reinforcing effect with increasing filler concentration because of their large primary particle size (2 ㎛). The reinforcing behavior based on 100% modulus of the functional filler based NBR compounds was compared by using several predictive equation models. The reinforcing behavior of the C-CaCO3-filled NBR compound was in accordance with the Smallwood-Einstein equation whereas the 200MP- and MWCNT-filled NBR compounds fitted well with the modified Guth-Gold (m-Guth-Gold) equation. The SRF- and HS45-filled NBR compounds exhibited reinforcing behavior in accordance with the Guth-Gold and m-Guth-Gold equations, respectively, at a low filler content. However, the values of reinforcement parameter (100Mf/100Mu) of the SRF- and HS45-filled NBR compounds were higher than those determined by the predictive equation model at a high filler content. Because the chains of SRF composed of spherical filler particles are similarly changed to rod-like filler particles embedded in a rubber matrix and the reinforcement parameter rapidly increased with a high content of HS45, the higher-structured filler. The reinforcing effectiveness of the functional fillers was numerically evaluated on the basis of the effectiveness index (��SRF/��f) determined by the ratio of the volume fraction of the functional filler (��f) to that of the SRF filler (��SRF) at three unit of reinforcing parameter (100Mf/100Mu). On the basis of their effectiveness index, MWCNT-, 200MP-, and HS45-filled compounds showed higher reinforcing effectiveness of 420%, 70%, and 20% than that of SRF-filled compound, respectively whereas C-CaCO3-filled compound exhibited lower reinforcing effectiveness of -50% than that of SRF-filled compound.

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References

  1. A. Choudhury, A. K. Bhowmick, and M. Soddemann, "Effect of organo-modified clay on accelerated aging resistance of hydrogenated nitrile rubber nanocomposites and their life time prediction", Polym. Degrad. Stabil, 95, 12 (2010).
  2. C. Dong, C. Yuan, X. Bai, X. Yan, and Z. Peng, "Tribological properties of aged nitrile butadiene rubber under dry sliding conditions", Wear, 322, 226 (2015). https://doi.org/10.1016/j.wear.2014.11.010
  3. G. R. Hamed, "Reinforcement of rubber", Rubber Chem. Technol., 73, 3 (2000). https://doi.org/10.5254/1.3547603
  4. J. Frohlich, W. Niedermeier, and H.-D. Luginsland, "The effect of filler-filler and filler-elastomer interaction on rubber reinforcement", Compos. Part A-Appl. S., 36, 4 (2005).
  5. M. Kluppel and G. Heinrich, "Fractal structures in carbon black reinforced rubbers", Rubber Chem. Technol., 68, 4 (1995).
  6. M. Wagner, "Reinforcing silicas and silicates", Rubber Chem. Technol., 49, 3 (1976). https://doi.org/10.5254/1.3534979
  7. A. Einstein, "Correction of my work: A new determination of the molecular dimensions", Ann. Phys., 34, 3 (1911).
  8. H. M. Smallwood, "Limiting law of the reinforcement of rubber", J. Appl. Phys., 15, 11 (1944). https://doi.org/10.1063/1.1707385
  9. E. Guth, "Theory of filler reinforcement", J. Appl. Phys., 16, 1 (1945). https://doi.org/10.1063/1.1707495
  10. M. M. Salehi, T. Khalkhali, and A. A. Davoodi, "The physical and mechanical properties and cure characteristics of NBR/Silica/MWCNT hybrid composites", Polym. Sci. Ser A+, 58, 567 (2016). https://doi.org/10.1134/S0965545X16040131
  11. S.-S. Choi, K.-J. Hwang, and B.-T. Kim, "Influence of bound polymer on cure characteristics of natural rubber compounds reinforced with different types of carbon blacks", J. Appl. Polym. Sci., 98, 2282 (2005). https://doi.org/10.1002/app.22287
  12. K. M. George, J. K. Varkey, B. George, S. Joseph, K. T. Thomas, and N. M. Mathew, "Physical and dynamic mechanical properties of silica filled nitrile rubber modified with epoxidised natural rubber", Elastomere und Kunststoffe, KGK Oktober, 544 (2006).
  13. S.-S. Choi and O.-B. Kim, "Influence of inorganic filler on properties of EPDM compounds", Elastomers Compos, 46, 2 (2011).
  14. M. A. Ansarifar, J. P. Chugh, and S. Haghighat, "Effects of silica on the cure properties of some compounds of styrene-butadiene rubber", Iran. Polym. J., 9, 81 (2000).
  15. E. M. Dannenberg, "The effects of surface chemical interactions on the properties of filler-reinforced rubbers", Rub. Chem. Tech., 48, 410 (1975). https://doi.org/10.5254/1.3547460
  16. C. Ryu, C. K. Hong, C. W. Moon, and S. Kaang, "Effects of particle size and structure of fillers on the friction and wear behavior of filled elastomer", Elastomer, 41, 194 (2006).
  17. M. N. Ichazo, C. Albano, M. Hernandez, J. Gonzalez, and A. Carta, "Effects of particle size and size distribution on the mechanical properties of EPDM/Silica vulcanizates", Adv. Mat. Res., 47-50, 113 (2008). https://doi.org/10.4028/www.scientific.net/AMR.47-50.113
  18. S.-Y. Fu, X.-Q. Feng, B. Lauke, and Y.-W. Mai, "Effects of particle size, particle/matrix interface adhesion and particle loading on mechanical properties of particulate-polymer composites", Composites. B, 39, 933 (2008). https://doi.org/10.1016/j.compositesb.2008.01.002
  19. S. H. Yetgin, "Effect of multi walled carbon nanotube on mechanical, thermal and rheological properties of polypropylene", J. Mater. Res. Technol., 8, 4725 (2019). https://doi.org/10.1016/j.jmrt.2019.08.018
  20. H.-D. N.-Tran, V.-T. Hoang, V.-T. Do, D.-M. Chun, and Y.-J. Yum, "Effect of multiwalled carbon nanotubes on the mechanical properties of carbon fiber-reinforced polyamide-6/polypropylene composites for lightweight automotive parts", Materials, 11, 429 (2018). https://doi.org/10.3390/ma11030429
  21. T. Fornes and D. R. Paul, "Modeling properties of nylon 6/clay nanocomposites using composite theories", Polym. J., 44, 17 (2003).
  22. H. Koerner, W. Liu, M. Alexander, P. Mirau, H. Dowty, and R. A. Vaia, "Deformation-morphology correlations in electrically conductive carbon nanotube -thermoplastic polyurethane nanocomposites", Polym. J., 46, 12 (2005).
  23. S. Bhattacharyya, V. Lodha, S. Dasgupta, R. Mukhopadhyay, A. Guha, P. Sarkar, T. Saha, and A. K. Bhowmick, "Influence of highly dispersible silica filler on the physical properties,tearing energy, and abrasion resistance of tire tread compound", J. Appl. Polym. Sci., 136, 47560 (2019). https://doi.org/10.1002/app.47560
  24. F. Cataldo, O. Ursini, and G. Angelini, "MWCNTs elastomer nanocomposite, Part 1: The addition of MWCNTs to a natural rubber-based carbon black-filled rubber compound", Fuller. Nanotub. Car. N., 17, 38 (2009). https://doi.org/10.1080/15363830802515907
  25. C. Nah, J. Y. Lim, B. H. Cho, C. K. Hong, and A. N. Gent, "Reinforcing rubber with carbon nanotubes", J. Appl. Polym. Sci., 118, 3 (2010).