Preparation and Properties of EPDM/Zinc Methacrylate Hybrid Composites

에틸렌 프로필렌 디엔 고무/메타크릴산아연 하이브리드 복합체의 제조와 물성에 관한 연구

  • Published : 2005.03.31


Zinc methacrylate(ZMA) was incorporated into ethylene-propylene diene rubber(EPDM) by direct mixing of the metal salt with the rubber or was in-situ prepared in the rubber matrix through neutralization reaction of zinc oxide(ZnO) and methacrylic acid(MAA). Tensile and tear tests showed that ZMA had a great reinforcing effect for the EPDM. It was also found that ZMA reinforced EPDM vulcanizates can retain their mechanical properties under thermo-oxidative aging. Moreover the incorporation of ZMA induces a substantial improvement in the adhesive strength of the EPDM onto aluminum substrate. The reinforcing effect and an enhancement in adhesion was greatly manifested when the ZMA is in-situ formed with an excess amount of ZnO. The extraordinary improvement in the properties is supposed to be related with the formation of ionic crosslink as well as the degree of dispersion or ZMA domain in the rubber matrix.


  1. R. Costin, W. Nagel, and R. Ekwall, 'New Metallic Coagents for Curing Elastomers', Rubber Chem. Technol., 64, 152 (1991)
  2. S. J. Oh and J. L. Koenig, 'Studies of Peroxide Curing of Polybutadiene/Zinc Diacrylate Blends by Fast FT-IR Imaging', Rubber Chem. Technol., 72, 334 (1999)
  3. X. Yuan, Z. Peng, Y. Zhang, and Y. Zhang, 'The Properties and Structure of Peroxide-cured NBR Containing Magnesium Methacrylate', Polymers & Polymer Composites, 7(6), 431 (1999)
  4. Y. Lu, L. Liu, D. Shen, C. Yang, and L. Zhang, 'Infrared Study on In-Situ Polymerization of Zinc Dimethacrylate in Poly((-octylene-co-ethylene) Elastomer', Polym. Int., 53, 802 (2004)
  5. D. Yin, Y. Zhang, Y. Zhang, Z. Peng, Y. Fan, and K. Sun, 'Reinforcement of Peroxide Cured Styrene-Butadiene Rubber Vulcanizates by Methacrylic Acid and Magnesium Oxide', J. Appl. Polym. Sci., 85, 2677 (2002)
  6. X. Yuan, Z. Peng, and Y. Zhang, 'In-Situ Preparation of Zinc Salts of Unsaturated Carboxylic Acids to Reinforce NBR', J. Appl. Polym. Sci., 77, 2740 (2000)
  7. Z. Peng, X. Liang, Y. Zhang, and Y. Zhang, 'Reinforcement of EPDM by In-Situ Prepared Zinc Dimethacrylate', J. Appl. Polym. Sci., 84, 1339 (2002)
  8. Y. Saito, A. Fujino, and A. Ikeda, 'High Strength Elastomers of Hydrogenated NBR Containing Zinc Oxide and Methacrylic Acid', SAE Tech. Paper, SAE 890359, 13 (1989)
  9. N. Nagata, T. Sato, T. Fujii, and Y. Saito, 'Structure and Mechanical Properties of Hydrogenated NBR/Zinc Dimethacrylate Vulcanizates', J. Appl. Polym. Sci.: Appl. Polym. Symp., 53, 103 (1994)
  10. A. Du, Z. Peng, Y. Zhang, and Y. Zhang, 'Properties of EVM Vulcanizates Reinforced by InSitu Prepared Sodium Methacrylate', J. Appl. Polym. Sci., 89, 2192 (2003)
  11. T. Ikeda, B. Yamada, M. Tsuji, and S. Sakurai, 'In-Situ Copolymerization Behavior of Zinc Dimethacryalte and 2-(N-ethylper fluorooctanesulphonamido)ethyl acrylate in Hydrogenated Nitrile-Butadiene Rubber during Peroxide Crosslinking,' Polym. Int., 48, 446 (1999)
  12. T. Ikeda and B. Yamada, 'Copolymerization of Zinc Dimethacrylate and Perfluoroalkyl Acrylates in Different Solvents', J. Appl. Polym. Sci., 71, 1499 (1999)<999::AID-APP15>3.0.CO;2-C
  13. K. Mori, H. Hirahara, and Y. Oishi, 'Direct Adhesion between Electroless Nickel Plated Metals and NBR Compounds during Curing', Rubber Chem. Technol., 70, 211 (1997)
  14. R. Costin and W. Nagel, 'Techniques for Bonding Rubber to Metal using Metallic Coagents', Rubber World, 219(2), 18 (1998)
  15. L. Ibarra and M. Alzorriz, 'Vulcanization of Car boxyalted Nitrile Rubber by Zinc Peroxide', Polym. Int., 48, 580 (1999)
  16. L. Ibarra and M. Alzorriz, 'Ionic Elastomers Based on Carboxylated Nitrile Rubber and Zinc Peroxide: Influence of Carboxylic Group Content on Properties', J Appl. Polym. Sci., 84, 605 (2002)