Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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A Study on Synthesis and Properties of Polyurethane Dispersion Adhesives

  • Received : 2017.11.27
  • Accepted : 2017.12.11
  • Published : 2017.12.31
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Abstract

Polyurethane dispersion (PUD) polymers were synthesized by using polyether and polyester polyol. The effect of ionomeric centers, r(NCO / OH) values, chain extender process, and chain extender types on the adhesion properties was investigated. In the case of polyether-based PUD, the ionic center, r value, chain extension process and chain extender types were not adjusted even after adjustment. In the case of polyester-based PUD, when the ionic center content was more than 2.5%, the state of adhesive strength was $2.0kgf/cm^2$ or more. On the other hand, the initial adhesive strength was excellent at about $1kgf/cm^2$ when the ionic center content was over 3.5%. When the r value was 1.3 or more, it was found that the initial bonding strength and the state of bonding strength were excellent at about $1kgf/cm^2$ and $2.1kgf/cm^2$ or higher, respectively. An IR spectrum analysis of the synthesized PUD confirmed that PUD was composed of urethane based on the N-H characteristic peak at $3340cm^{-1}$ and the urethane characteristic peak at $1730cm^{-1}$. Moreover, the characteristic peaks of the isocyanate ($2260cm^{-1}$) used in the preparation of the prepolymer were not observed. As a result, the residual -NCO was not observed, and urethane was completely synthesized.

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References

  1. J. F. Meier, Fundamentals of Plastics and Elastomers, C.A. Harper (Ed.), Handbook of Plastics, Elastomers, and Composites (3rd ed.), McGraw Hill, New York (1996).
  2. I. Skiest, J. Miron,, Handbook of Adhesives, (3rd ed.) Van Nostrand Reinhold Publishing, New York (1990).
  3. A. V. Pocius, Adhesion and Adhesives Technology, Hanser Publishers, New York (Chapter 6). (1997).
  4. A. Pizzi, "Recent developments in eco-efficient bio-based adhesives for wood bonding: opportunities and issues", J. Adhes. Sci. Technol., 20, 829 (2006). https://doi.org/10.1163/156856106777638635
  5. M. Deepak and K. S. Vijay, "Eco-economical polyurethane wood adhesives from cellulosic waste: Synthesis, characterization and adhesion study", Int. J. Adhes. Adhes., 30, 47 (2010). https://doi.org/10.1016/j.ijadhadh.2009.08.003
  6. D. D. Sandip, V. P. Jigar, and K. S. Vijay, "Polyurethane adhesive system from biomaterial-based polyol for bonding wood", Int. J. Adhes. Adhes., 23, 393 (2003). https://doi.org/10.1016/S0143-7496(03)00070-8
  7. D. Rakai and E. Charles, "Structure-property behavior of moisture-cure polyurethane wood adhesives: Influence of hard segment content", Int. J. Adhes. Adhes., 45, 1184 (2013).
  8. H. Yong, Z. Xinya, Z. Xinfang, H. Hong, C. Jie, and C. Huanqin, "Structural investigations of toluene diisocyanate (TDI) and trimethylolpropane (TMP)-based polyurethane prepolymer", J. Ind. Eng. Chem., 18, 1620 (2012). https://doi.org/10.1016/j.jiec.2012.02.023
  9. J. Tyczkowski, I. Krawczyk-K, S. Kuberski, and P. Makowski, "Chemical nature of adhesion: Plasma modified styrenebutadiene elastomer and polyurethane adhesive joints", Eur. Polym. J., 46, 767 (2010). https://doi.org/10.1016/j.eurpolymj.2009.12.019
  10. H. A. Essawy, A. Moustafa, and N. H. Elsayed, "Enhancing the properties of urea formaldehyde wood adhesive system using different generations of core-shell modifiers based on hydroxyl-terminated dendritic poly(amidoamine)", J. Appl. Polym. Sci., 115, 370 (2010). https://doi.org/10.1002/app.30572
  11. J. H. Saunders and K. C. Frisch, Polyurethanes: Chemistry and Technology: Part 1. Chemistry, Interscience Publishers, 368 (1962).
  12. P. Carmen, N. S. Allen, E. F. Salvador, C. Teresa, and C. Fernando, "Chemiluminescence and fluorescence for monitoring the photooxidation of an UV-cured aliphatic polyurethaneacrylate based adhesive", Polym. Degrad. Stab., 77, 523 (2002). https://doi.org/10.1016/S0141-3910(02)00111-8
  13. M. Gauthier, Engineered Materials Handbook Vol. 3: Adhesives and Sealants., American Society for Materials (1990).
  14. R. Krech, J. Mueller, N. Pohlmann, P. Sellig, and R. Steinberger, US Patent 6,538,075 B1 (2003).
  15. S. B. Clough and N. S. Schneider, "Structural studies on urethane elastomers", J. Mcromol. Sci. B: Phys., 2, 553 (1968). https://doi.org/10.1080/00222346808212458
  16. M. Szycher, Szycher's Handbook of Polyurethanes, CRC Press, New York (1999).
  17. J. S. Yoo and H. J. Chun, Polym. Sci. Technol., 10, 583 (1999).
  18. J. Julia, D. Salvatella, and J. Lopoe, Adhesives age, (1994).
  19. D. Dieterich, Prog. Organic Coatings, 9, 281 (1981). https://doi.org/10.1016/0033-0655(81)80002-7
  20. S. Y. Lee, J. S. Lee, and B. B. Kim, Polym. International, 42, 67 (1997). https://doi.org/10.1002/(SICI)1097-0126(199701)42:1<67::AID-PI660>3.0.CO;2-A