Advertisement

Journal of Coatings Technology and Research

, Volume 16, Issue 2, pp 377–385 | Cite as

Low-viscosity UV-curable polyurethane acrylates containing dendritic acrylates for coating metal sheets

  • Woo-Chan Choi
  • Won-Ki Lee
  • Chang-Sik HaEmail author
Article
  • 134 Downloads

Abstract

To develop environmentally friendly coating materials with good workability, a low-viscosity polyurethane acrylate (LPUA) was newly synthesized using cycloaliphatic isocyanate, 2-hydroxypropyl acrylate and caprolactone hydroxyl acrylate. Low-viscosity UV-curable dendritic polyurethane acrylate coatings (LPUA-DAs) were then prepared by adding different amounts of dendritic acrylates to LPUA. The viscosity of the resulting products, curing behavior, mechanical and thermal stability, hardness, and flexibility of the UV-cured films were examined. The mechanical properties and the glass transition temperature increased with increasing content of dendritic acrylates but the viscosity decreased. The optimal properties of the coating materials were observed when 10% of dendritic acrylate was used.

Keywords

UV-curable coatings Low-viscosity polyurethane acrylate Dendritic acrylate Pre-coated metal 

Notes

Acknowledgments

This work was supported by the Industry Core Technology Development Project of Research Funds of Ministry of Trade, Industry and Energy (No. 10070142). CSH also thankful for the financial support by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, Korea (NRF-2017R1A2B3012961; Brain Korea 21 Plus Program (21A2013800002)).

References

  1. 1.
    Ueda, K, Kanai, H, Suzuki, T, Amari, T, “Effects of Mechanical Properties of Paint Film on the Forming of Pre-painted Steel Sheets.” Prog. Org. Coat., 43 233–242 (2001)CrossRefGoogle Scholar
  2. 2.
    Ueda, K, Kanai, H, Amari, T, “Formability of Polyester/Melamine Pre-painted Steel Sheets from Rheological Aspect.” Prog. Org. Coat., 45 267–272 (2002)CrossRefGoogle Scholar
  3. 3.
    Moon, JI, Lee, YH, Kim, HJ, Schwartz, S, Rafailovich, M, Sokolov, J, “Investigation of the Peel Test for Measuring Self-cleanable Characteristic of Fluorine-modified Coatings.” Polym. Test., 31 433–438 (2012)CrossRefGoogle Scholar
  4. 4.
    Dzunuzovic, E, Tasic, S, Bozic, B, Babic, D, Dunjic, B, “UV-Curable Hyperbranched Urethane Acrylate Oligomers Containing Soybean Fatty Acids.” Prog. Org. Coat., 52 136–143 (2005)CrossRefGoogle Scholar
  5. 5.
    Wang, F, Hu, JQ, Tu, WP, “Study on Microstructure of UV-Curable Polyurethane Acrylate Films.” Prog. Org. Coat., 62 245–250 (2008)CrossRefGoogle Scholar
  6. 6.
    Bao, F, Shi, W, “Synthesis and Properties of Hyperbranched Polyurethane Acrylate Used for UV Curing Coatings.” Prog. Org. Coat., 68 334–339 (2010)CrossRefGoogle Scholar
  7. 7.
    Anastassopoulos, A, Prendi, L, Tam, E, “Life Cycle Inventory and Data Application Protocol for the Automotive Paint Processes.” Coat. Tech., 6 26–35 (2009)Google Scholar
  8. 8.
    Detiveaux, S, “The Automotive OEM Coatings Market: Impact of The Global Economic Downturn.” Coat. Tech., 6 36–39 (2009)Google Scholar
  9. 9.
    Davidson, RS, Holman, RJ, “Developments and Trends in Radiation Curing.” Color. Technol., 33 46–58 (2003)Google Scholar
  10. 10.
    Sinwa, N, “Acrylic Oligomer with Dendrimer Structure.” Jetty, 59 101–105 (2011)Google Scholar
  11. 11.
    Brigitte, V, “Hyperbranched Polymers.” J. Polym. Sci. Part A Polym. Chem., 43 2679–2699 (2005)CrossRefGoogle Scholar
  12. 12.
    Xu, DM, Zhang, KD, Zhu, XL, “A Novel Dendritic Acrylate Oligomer: Synthesis and UV Curable Properties.” J. Appl. Polym. Sci., 92 1018–1022 (2004)CrossRefGoogle Scholar
  13. 13.
    Athawale, VD, Kulkarni, MA, “Polyester Polyols for Waterborne Polyurethanes and Hybrid Dispersions.” Prog. Org. Coat., 67 44–54 (2010)CrossRefGoogle Scholar
  14. 14.
    Frings, RB, Wend, M, “New Hyperbranched Polyesters for UV Curing.” DIC Tech. Rev., 9 43–51 (2003)Google Scholar
  15. 15.
    Ueda, K, Kanai, H, Amari, T, “Viscoelastic Properties of Paint Films and Formability in Deep Drawing of Pre-painted Steel Sheets.” Prog. Org. Coat., 45 15–21 (2002)CrossRefGoogle Scholar
  16. 16.
    Moon, JI, Lee, YH, Kim, HJ, Noh, SM, Nam, JH, “Synthesis of Elastomeric Polyester and Physical Properties of Polyester Coating for Automotive Pre-primed System.” Prog. Org. Coat., 75 65–71 (2012)CrossRefGoogle Scholar
  17. 17.
    Ha, CS, Jung, SJ, Kim, ES, Kim, WS, Lee, SJ, Cho, WJ, “Properties of UV-Curable Polyurethane Acrylates Using Nonyellowing Polyisocyanate for Floor Coating.” J. Appl. Polym. Sci., 62 1011–1021 (1996)CrossRefGoogle Scholar

Copyright information

© American Coatings Association 2018

Authors and Affiliations

  1. 1.Central R&D CenterDongkuk Steel MillBusanKorea
  2. 2.Department of Polymer EngineeringPukyong National UniversityBusanKorea
  3. 3.Department of Polymer Science and EngineeringPusan National UniversityBusanKorea

Personalised recommendations