한국섬유공학회지 (Textile Science and Engineering)

  • 제56권2호
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  • Pages.112-117
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  • 2019
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
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NCO 지수와 숙성 조건에 따른 무용제형 폴리우레탄 인조피혁의 물리 화학적 특성에 관한 연구

Study of NCO Index and Ripening Condition on Physicochemical Properties of Solvent-less Polyurethane Formulations

  • 은종현 (영남대학교 파이버시스템공학과) ;
  • 이준석 (영남대학교 파이버시스템공학과) ;
  • 유호욱 ((주)T4L) ;
  • 배한조 (한국폴리텍대학 섬유패션캠퍼스 패션소재과)
  • Eun, Jong Hyun (Department of Fiber System Engineering, Yeungnam University) ;
  • Lee, Joon Seok (Department of Fiber System Engineering, Yeungnam University) ;
  • Yoo, Ho Wook (Textile for Life, Ltd.) ;
  • Bae, Han Jo (Department of Fashion Material, Korea Polytechnic)
  • 투고 : 2019.02.08
  • 심사 : 2019.04.20
  • 발행 : 2019.04.30
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, we investigated the chemical and physical properties of polyurethane artificial leather. Polyurethane artificial leather was prepared from polyol, diisocyanate, a chain extender, a catalyst, and nylon circular knit fabric. After manufacturing the artificial leather, the properties of six different samples were investigated according to their NCO index and ripening temperature. The equivalence ratios of the isocyanates (NCO) to polyols containing a hydroxyl group are referred to as the NCO index. Samples with an NCO index of 1.0, 1.4, and 1.8 were synthesized by changing the weight ratio of diisocyanate. Polyurethane artificial leathers were synthesized by varying the ripening temperature at room temperature and $60^{\circ}C$. As the NCO index increased, the number of unreacted NCO functional groups increased, thereby improving the physical properties of polyurethane artificial leathers. When the samples were prepared at a ripening temperature of $60^{\circ}C$, the surface of the polyurethane artificial leather changed, and the physical properties improved.

키워드

참고문헌

  1. C. Hepburn, "Polyurethane Elastomers", 2nd ed., Elsevier Science Publishers Ltd., London, 1992, pp.1-27.
  2. G. Oertel, Ed., "Polyurethane Handbook", Hanser Publishers, Munich, 1985, pp.1-38.
  3. M. Modesti and A. Lorenzetti, "An Experimental Method for Evaluating Isocyanate Conversion and Trimer Formation in Polyisocyanate Polyurethane Foams", Eur. Polym. J., 2001, 37, 949-954. https://doi.org/10.1016/S0014-3057(00)00209-3
  4. W. Lin and W. Lee, "Effects of the NCOOH Molar Ratio and the Silica Contained on the Properties of Waterborne Polyurethane Resins", Colloid Surf. A., 2017, 522, 453-460. https://doi.org/10.1016/j.colsurfa.2017.03.022
  5. F. Levine, J. Escarsega, and J. Scala, "Effect of Isocyanate to Hydroxyl Index on the Properties of Clear Polyurethane Films", Prog. Org. Coat., 2012, 74, 572-581. https://doi.org/10.1016/j.porgcoat.2012.02.004
  6. H. Jo, J. Yang, H. Lim, and S. Lee, "A Study on the Adhesion Properties of the Polyurethane Resin and Polyketone Fabrics with MDI Treatment Conditions", Text. Sci. Eng., 2017, 54, 116-124. https://doi.org/10.12772/TSE.2017.54.116
  7. A. Mishra, R. Narayan, K. Raju, and T. M. Aminabhavi, "Hyperbranched Polyurethane (HBPU)-urea and HBPU-imide Coatings Effects of Chain Extender and NCO/OH Ratio on their Properties", Prog. Org. Coat., 2012, 74, 134-141. https://doi.org/10.1016/j.porgcoat.2011.11.027
  8. I. Poljan, E. Fabjan, D. Moderc, and D. Kukanja, "The Effect of Free Isocyanate Content on Properties of One Component Urethane Adhesive", Int. J. Adhes. Adhes., 2014, 51, 87-94. https://doi.org/10.1016/j.ijadhadh.2014.02.012
  9. K. Park, G. Jin, and H. Lee, "Effect of Chain Structure of Diisocyanate and Chain Extender on the Thermal Characteristics of Polyurethane", Text. Sci. Eng., 2008, 45, 111-119.
  10. K. Ra, B. Seo, S. Seo, and H. Lee, "Effect of Cross-Linking Agent on Mechanical Properties and Thermal Stability of Polyurethanes", Text. Sci. Eng., 2001, 38, 155-163.
  11. Y. Savelyev, E. Akhranovich, A. Grekove, and E. Privalko, "Influence of Chain Extenders and Chain end Groups on Properties of Segmented Polyurethanes. 1. Phase Morphology", Polymer, 1998, 39, 3425-3429. https://doi.org/10.1016/S0032-3861(97)10101-X
  12. T. Ando, "Effect of Reaction Temperature on Polyurethane Formation in Bulk", Polym. J., 1993, 25, 1207-1209. https://doi.org/10.1295/polymj.25.1207
  13. A. Heintz, D. Duffy, S. Hsu, W. Suen, W. Chu, and C. Paul, "Effects of Reaction Temperature on the Formation of Polyurethane Prepolymer Structures", Macromolecules, 2003, 36, 2695-2704. https://doi.org/10.1021/ma021559h
  14. X. Wang, Z. Yan, X. Liu, T. Qiang, and L. Chen, "An Environmental Polyurethane Retanning Agent with the Function of Reducing Free Formaldehyde in Leather", J. Clean. Prod., 2019, 207, 679-688. https://doi.org/10.1016/j.jclepro.2018.10.056
  15. M. A. and T. Ve, "Application of One Component Primer to Avoid the Roughening of Leather and Increase Its Adhesion to Polyurethane Adhesive", Int. J. Adhes. Adhes., 2005, 25, 320-328. https://doi.org/10.1016/j.ijadhadh.2004.11.001
  16. D. Kim, S. Yang, O. Kwon, and J. Park, "Studies on the Structural and Mechanical Properties of Polyurethane Rigid Foams Prepared Using Starch as a Main Component of Polyols", Text. Sci. Eng., 2004, 41, 365-376.
  17. D. Seo, J. Lee, J. Hong, O. Kweon, and H. Kim, "Study on Properties of Bio Polyurethane-ePTFE Membrane Fabrics at -20 Degrees Celsius", Text. Sci. Eng., 2018, 55, 247-254. https://doi.org/10.12772/TSE.2018.55.247
  18. J. Ock, P. Kim, H. Cho, O. Kwon, W. Jung, and J. Koh, "Synthesis and Characterization of Eco Friendly Polyurethane Incorporating Soybean-oil-based Polyol" Text. Sci. Eng., 2015, 52, 320-324. https://doi.org/10.12772/TSE.2015.52.320
  19. E. Kim, I. Paik, and J. Park, "Waterborne Polyurethane Skin Resin Used in the Fabrication of Synthetic Leather Adhesive", Text. Sci. Eng., 2016, 54, 28-35. https://doi.org/10.12772/TSE.2017.54.028