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Heat Treatment Effect on Anti-Tacking Properties of an Zn-stearate/TEA-stearate/Water Emulsion System

  • Qin, Pei (Department of Chemical Engineering, Keimyung University) ;
  • Lee, JinBae (Department of Chemical Engineering, Keimyung University) ;
  • Ha, KiRyong (Department of Chemical Engineering, Keimyung University) ;
  • Ahn, WonSool (Department of Chemical Engineering, Keimyung University)
  • Received : 2019.07.30
  • Accepted : 2019.08.16
  • Published : 2019.09.30

Abstract

Carbon master batch (CMB) rubber sheets, which are stored in stacks, are difficult to separate during reuse because of the adhesion between sheets caused by the stacked weight over time. To solve this problem, in the actual rubber product manufacturing process, various anti-tacking agents (solid powder or liquid surfactants) are applied to the sheet surface. In this study, the emulsion samples of zinc (Zn)-stearate/triethanolamine (TEA)-stearate mixtures were prepared using TEA-stearate as a surfactant, prepared using an industrially manufactured Zn-stearate powder, and their basic anti-tacking properties were studied. During the process of manufacturing emulsion, a heat treatment process and an auxiliary surfactant were introduced to improve the dispersion stability. Results showed that the heat-treated sample exhibited a significant improvement in terms of sedimentation, storage stability, and anti-tacking characteristics since the Zn-stearate particles were reduced to a smaller size by the heat-treatment than that of the original Zn-stearate powder.

References

  1. A. Ciesielski, "An Introduction to Rubber Technology", 1st Ed. p. 181, Rapra Technology Ltd., U.K., 1999.
  2. OKF. Bussemaker, "Tack in Rubber", Rubber Chem. Technol., 37, 1178 (1964). https://doi.org/10.5254/1.3540398
  3. H. Kennedy, "Simple solutions to common anti-tack problems", Rubber World, 258, 30 (2018).
  4. W. Kriangkrai, S. Puttipipatkhachorn, P. Sriamornsak, T. Pongjanyakul, and S. Sungthongjeen, "Magnesium stearate as anti-tacking agent in acrylic polymer films intended for gasentrapped floating delivery system", Adv. Mat. Res., 506, 497 (2012).
  5. M. F. Cervera, J. Heinamaki, E. Rasanen, O. Antikainen, O. M. Nieto, A. I. Colarte, and J. Yliruusi, "Determination of tackiness of chitosan film-coated pellets exploiting minimum fluidization velocity", Int. J. Pharm., 281, 119 (2004). https://doi.org/10.1016/j.ijpharm.2004.06.004
  6. S. Nimkulrat, K. Suchiva, P. Phinyocheep, and S. Puttipipatkhachorn, "Influence of selected surfactants on the tackiness of acrylic polymer films", Int. J. Pharm., 287, 27 (2004). https://doi.org/10.1016/j.ijpharm.2004.08.022
  7. F. M. Helaly, S. H. El Sabbagh, O. S. El Kinawy, and S. M. El Sawy, "Effect of synthesized zinc stearate on the properties of natural rubber vulcanizates in the absence and presence of some fillers", Materials and Design, 32, 2835 (2011). https://doi.org/10.1016/j.matdes.2010.12.038
  8. W. O. Lackey, C. J. Marshall, J. E. Sikes, and G. M. Freeman, "Surfactant treated clays useful as anti-tack agents for uncured rubber compounds", US Patent 5178676 (1993).
  9. T. Warnheim and A. Jonsson, "Surfactant aggregation in systems containing alkanolamines and fatty acids", J. Colloid Interface Sci., 138, 314 (1990). https://doi.org/10.1016/0021-9797(90)90214-9
  10. T. Geng, Q. Li, and Y. Li, "Study of synthesis and properties of stearic acid triethanolamine quaternary", Wool Textile Journal, 9, 24 (2004).
  11. S. Zhu, M. Heppenstall-Butler, M. Butler, P. Pudney, D. Ferdinando, and K. Mutch, "Acid soap and phase behavior of stearic acid and triethanolamine stearate", J. Phys. Chem. B, 109, 11753 (2005). https://doi.org/10.1021/jp050081r
  12. A. L. Wilson, "Triethanolamine Emulsions", Ind. Eng. Chem., 22, 143 (1930). https://doi.org/10.1021/ie50242a012
  13. J. Lee, P. Qin, K. Ha, and W. Ahn, "Anti-Tacking Properties of Zinc Stearate Emulsion for CMB Rubber Sheet Prepared by Heat Treatment Process", World J. Text. Eng. Technol., 5, 84 (2019).
  14. R. G. Harry and M. M. Rieger, "Harry's Cosmeticology", p. 745, Chemical Publishing, N.Y., 2000.
  15. S. Barman and S. Vasudevan, "Contrasting Melting Behavior of Zinc Stearate and Zinc Oleate", J. Phys. Chem. B, 110, 651 (2006). https://doi.org/10.1021/jp055814m
  16. T. Shioka, K. Maeda, I. Watanabe, S. Kawauchi, and M. Harada, "Infrared and XAFS study on structure and transition behavior of zinc stearate", Spectrochim. Acta A, 56, 1731 (2000). https://doi.org/10.1016/S1386-1425(00)00225-0