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Study on the Oil Resistance, Morphological and Dynamic Mechanical Properties, Flame Retardance of Ethylene Vinyl Acetate Copolymer and Ethylene Propylene Rubber Compounds

  • Sung, Il Kyung (Dept. of Polymer Engineering, Pukyong National University) ;
  • Lee, Won Ki (Dept. of Polymer Engineering, Pukyong National University) ;
  • Park, Chan Young (Dept. of Polymer Engineering, Pukyong National University)
  • Received : 2017.02.13
  • Accepted : 2017.02.28
  • Published : 2017.03.31

Abstract

In this experiment, blends of ethylene vinyl acetate rubber (EVM) with a vinyl acetate (VA) content greater than 40 wt% and ethylene propylene rubber (EPM) were prepared by mechanical mixing; a number of parameters of the blends, including oil resistance, morphological and dynamic mechanical properties and flame retardancy, were subsequently measured. In the $100^{\circ}C$ oil resistance test, both the ammonium polyphosphate/dipentaerythritol/expandable graphite (APP/DPER/EG) and aluminum hydroxide (ATH) flame retardant systems showed an increase in volume change with increasing EPM content. For the ATH system, the dispersion shape was coarse and aggregation was observed. The results of a dynamic mechanical test showed slightly higher E' and E'' for the APP/DPER/EG flame retardant system when compared to the single ATH system. For both the APP/DPER/EG and ATH systems, the limited oxygen index (LOI) tests performed at increasing content of EPM showed a LOI value higher than 30, indicating excellent flame resistance.

Keywords

References

  1. L. Song, Y. Hu, Y. Tang, R. Zhang, Z. Chen, and W. Fan, "Study on the properties of flame retardant polyurethane/organoclay nanocomposite", Polym. Degrad. Stab., 87, 111 (2005). https://doi.org/10.1016/j.polymdegradstab.2004.07.012
  2. W. Y. Chen, Y. Z. Wang, and F. C. Chang, "Thermal and Flame Retardation Properties of Melamine Phosphate-Modified Epoxy Resins", J. Polym. Res., 11, 109 (2004). https://doi.org/10.1023/B:JPOL.0000031069.23622.bc
  3. U. Braun, B. Schartel, M. A. Fichera, and C. Jager, "Flame retardancy mechanisms of aluminium phosphinate in combination with melamine polyphosphate and zinc borate in glassfibre reinforced polyamide 6,6", Polym. Degrad. Stab., 92, 1528 (2007). https://doi.org/10.1016/j.polymdegradstab.2007.05.007
  4. C. M. Liauw, G. C. Lees, S. J. Hurst, R. N. Rothon, and S. Ali, "Effect of silane-based filler surface treatment formulation on the interfacial properties of impact modified polypropylene/magnesium hydroxide composites", Compos. Part A Appl. Sci. Manuf., 29, 1313 (1998). https://doi.org/10.1016/S1359-835X(97)00132-2
  5. L. Clerc, L. Ferry, E. Leroy, and J. M. Lopez-Cuesta, "Influence of talc physical properties on the fire retarding behavior of (ethylene vinyl acetate copolymer/magnesium hydroxide/talc) composites", Polym. Degrad. Stab., 88, 504 (2005). https://doi.org/10.1016/j.polymdegradstab.2004.12.010
  6. P. R. Hornsby and C. L. Watson, "A study of the mechanism of flame retardance and smoke suppression in polymers filled with magnesium hydroxide", Polym. Degrad. Stab., 30, 73 (1990). https://doi.org/10.1016/0141-3910(90)90118-Q
  7. P. R. Hornsby and C. L. Watson, "Mechanism of smoke suppression and fire retardancy in polymers containing magnesium hydroxide filler", Plast. Rubber Process Appl., 11, 45 (1989).
  8. M. A. Pradeep, N. Vasudev, P. V. Reddy, and D. Khastgir, "Effect of ATH content on electrical and aging properties of EVA and silicone rubber blends for high voltage insulator compound", J. Appl. Polym. Sci., 104, 3505 (2007). https://doi.org/10.1002/app.24944
  9. H. X. Li, H. H. Huang, and M. Tian, "Flame retardancy of EVA filled by $Mg(OH)_2\;and\;AL(OH)_3$", China Plastics, 20, 67 (2006).
  10. A. Riva, G. Camino, L. Fomperie, and P. Amigouetc, "Fire retardant mechanism in intumescent ethylene vinyl acetate composition", Polym. Degrad. Stab., 82, 341 (2003). https://doi.org/10.1016/S0141-3910(03)00191-5
  11. S. Chen, Y. Zhang, R. Wang, H. Yu, M. Hoch, and S. Guo, "Mechanical properties, flame retardancy, hot-air aging, and hot-oil aging resistance of ethylene vinyl acetate rubber/hydrogenated nitrile butadiene rubber/magnesium hydroxide composites", J. Appl. Polym. Sci., 114, 3310 (2009). https://doi.org/10.1002/app.30620
  12. H. Horacek and R. Grabner, "Advantages of flame retardants based on nitrogen compounds", Polym. Degrad. Stab., 54, 205, (1996). https://doi.org/10.1016/S0141-3910(96)00045-6
  13. M. Le Bras, S. Bourbigot, C. Delporate, C. Siat, and Y. Le Tallec, "New Intumescent formulations of fire-retardant polypropylene-discussion of the free radical mechanism of the formation of carbonaceous protective material during the thermo-oxidative treatment of the additives", Fire & Mat., 20, 191 (1996). https://doi.org/10.1002/(SICI)1099-1018(199607)20:4<191::AID-FAM577>3.0.CO;2-S
  14. X. Almeras, M. Le Bras, P. Hornsby, S. Bourbigot, G. Marosi, S. Keszei, and F. Poutch, "Effect of fillers on the fire retardancy of intumescent polypropylene compounds", Polym. Degrad. Stab., 82, 325 (2003). https://doi.org/10.1016/S0141-3910(03)00187-3
  15. Z. Z. Li, B., and J. Qu, "Flammability characterization and synergistics of expandable graphite with magnesium hydrozide in halogen-free flame-retardant EVA blends", Polym. Degrad. Stab., 81, 401 (2003). https://doi.org/10.1016/S0141-3910(03)00123-X
  16. S. Duquesnel, M. LeBras, S. Bourbigot, R. Delobel, H. Vezin, G. Camino, E. Berend, C. Lindasay, and T. Roels, "Expandable graphite: A fire retardant additive for polyurethane coatings", Fire Mater., 27, 103 (2003). https://doi.org/10.1002/fam.812
  17. ASTM Designation, D 2084 76T (1972).
  18. ISO 4589-2, "Plastics Determination of burning behaviour by oxygen index", (2011).
  19. M. He, Polymer Physics; Fudan University Press: Shanghai, 2005.
  20. K. H. Seo and D. G. Kang, "The effect of fillers on rubber characteristics for gasket to lithium ion battery", Polymer (Korea), 34, 5 (2010).
  21. X. Xu, C. Gao, and Q. Zheng, "Rheological characterization of room temperature vulcanized silicone sealant: Effect of filler particle size", Polym. Eng. Sci., 48, 656 (2008). https://doi.org/10.1002/pen.20992
  22. Y. Tang, Y. Hu, R. Zang, Z. Gui, Z. Wang, Z. Chen, and W. Fan, "Investigation on polypropylene and polyamide-6 alloys/montmorillonite nanocomposites", Polymer, 45, 5317 (2004). https://doi.org/10.1016/j.polymer.2004.03.090
  23. B. T. Poh and E. K. Tan, "Mooney scorch time and cure index of epoxidized natural rubber in presence of sodium carbonate", J. Appl. Polym. Sci., 82, 6 (2001).