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Effects of a Crosslinking Agent and a Compatibilizer on the Mechanical and Rheological Properties of Waste PP and Waste Ground Rubber Tire Composites

  • Kim, Donghak (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Kim, Seonggil (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Lee, Minji (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Lee, Chanhee (Gumi High School) ;
  • Lee, Horyong (Gumi High School) ;
  • Lee, Seongwoo (Gumi High School) ;
  • Lee, Suhyeon (Gumi High School) ;
  • Moon, Myeongsuk (Gumi High School) ;
  • Bang, Daesuk (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
  • Received : 2015.01.15
  • Accepted : 2015.01.30
  • Published : 2015.03.31

Abstract

In this study, we investigated the effects of a crosslinking agent and a compatibilizer on the mechanical and rheological properties of waste PP and waste ground rubber tire (WGRT) composites. In order to simulate a commercial TPV, the component of waste PP and WGRT was fixed at 30 and 70 wt%, respectively. With the simple addition of SEBS-g-MA into the waste PP/WGRT composites, the tensile strength of the composite was decreased, whereas both the elongation at break and impact strength were significantly increased because of rubbery characteristics of SEBS-g-MA. In order to further improve the properties of the composites, the waste PP/WGRT/SEBS-g-MA composites was revulcanized with dicumyl peroxide (DCP). As expected, mechanical properties of the revulcanized composites was generally improved. Especially, with 15 and 1 phr of SEBS-g-MA and DCP, elongation at break was highest value of about 183% because of the recross-linking of WGRT without chain scission of the main chain. It was found that complex viscosity of the revulcanized composite increased which might verify further vulcanization of the WGRT.

Acknowledgement

Supported by : 금오공과대학교

References

  1. H. Ismail and S. Syah, "Properties of polypropylene/natural rubber/recycle rubber powder blends", Polym. Plast. Technol., 41, 833 (2002). https://doi.org/10.1081/PPT-120014391
  2. X. Su. Y, J. Quiao, Y. Liu, X. Zhang, J. Gao, Z. Song, and F. Huang, "The relationship between microstructure and properties in PP/rubber powder/nano-$CaCO_3$ ternary blends", Macromol. Mater. Eng., 289, 275 (2004). https://doi.org/10.1002/mame.200300209
  3. S. L. Zhang, Z. X. Zhang, Z. X. Xin, K. Pal, and J. K. Kim, "Prediction of mechanical properties of polypropylene/waste ground rubber tire powder treated by bitumen composites via uniform design and artificial neural networks", Mater. Des., 31, 1900 (2010). https://doi.org/10.1016/j.matdes.2009.10.057
  4. K. H. Park, D. H. Kim, J. K. Jung, S. G. Kim, D. S. Bang, M. H. Oh, and B. S. Kim, "Effect of compatibilizers on the mechanical properties of waste polypropylene/waste ground rubber tire composites", J. of Korean Inst. of Resources Recycling, 23, 70 (2014). https://doi.org/10.7844/kirr.2014.23.1.70
  5. Z. X. Xin, Z. X. Zhang, K. Pal, J. U. Byeon, S. H. Lee, and J. K. Kim, "Study of microcellular injection-molded polypropylene/waste ground rubber tire powder blend", Mater. Des., 31, 589 (2010). https://doi.org/10.1016/j.matdes.2009.07.002
  6. A. K. Naskar, S. K. De, and A. K. Bhowmick, "Thermoplastic elastomeric composition based on maleic anhydride-grafted ground rubber tire", J. Appl. Polym. Sci., 84, 370 (2002). https://doi.org/10.1002/app.10348
  7. C. K. Hong, and A. I. Isayev, "An application of high-power ultrasound to rubber recycling", Elastomer, 38, 103 (2003).
  8. H. E. Mohammad, G. Narjes, and C. Mahmood, "Combination of ultrasound and discarded tire rubber: removal of Cr(Ш) from aqueous solution", J. Phys. Chem. A., 109, 4638 (2005).
  9. M. Laszlo, B. Tamas, and C. Tibor, "EB-promoted recycling of waste tire rubber with polyolefins", Radiat. Phys. Chem., 81, 1357 (2012). https://doi.org/10.1016/j.radphyschem.2011.11.058
  10. J. S. Choi and C. C. Park, "Mechanical properties of polyethylene/polypropylene/waste tire rubber powder composites", Elast. Compos., 46, 318 (2011).
  11. R. Sonnier, E. Leroy, L. Clerc, A. Bergeret, J.-M. Lopez-Cuesta, A. S. Bretelle, and P. Ienny, "Compatibilizing thermoplastic/ground tyre rubber powder blends: efficiency and limits", Polym. Test., 27, 901 (2008). https://doi.org/10.1016/j.polymertesting.2008.07.003
  12. G. E. Garrett, E. Mueller, D. A. Pratt, and J. S. Parent, "Reactivity of polyolefins toward cumyloxy radical: yields and regioselectivity of hydrogen atom transfer", Macromolecules, 47, 544 (2014). https://doi.org/10.1021/ma402177v
  13. A. M. Shanmugharaj, S. H. Lee, J. K. Kim, and S. H. Ryu, "Influence of surface functionalized waste tire powder on the thermal and rheological properties of polypropylene/waste tire powder composite", Elastomer, 41, 49 (2006).
  14. M. Magioli, A. S. Sirqueira, and B. G. Soares, "The effect of dynamic vulcanization on the mechanical, dynamic mechanical and fatigue properties of TPV based on polypropylene and ground tire rubber", Polym. Test., 29, 840 (2006).
  15. H. S. Kye, K. C. Shin, and D. S. Bang, "A study on the mechanical and rheological properties of the recycled polyethylene composites with ground waste tire powder", Elastomer, 41, 97 (2006).
  16. K. Chatterjee and K. Naskar, "Development of thermoplastic elastomers based on maleated ethylene propylene rubber (m-EPM) and polypropylene (PP) by dynamic vulcanization", Express Polym. Lett., 8, 527 (2007).