Synthesis and Properties of Hybrid Curing Siloxane Modified Epoxy Resin/Polyurethane Acrylate Coating

Abstract:

In order increasing properties of polyurethane acrylate coating, the epoxy resin/ polyurethane acrylate coating was prepared by UV and thermal dual curing with diphenyliodonium salt. The curing reaction and kinetics was investigated by UV-radiation and DSC, and the influence of the siloxane of methylacryloylpropyl-trimethoxysilane (MAPTMS) content on the properties of coating was determined by DMA and other physical methods. The results showed the hardness and glass transition temperature T_g of the coating film increased with the increasing MAPTMS content and the coating has good adhesion. When the content of MAPTMS reach 12 wt%, the T_g is the highest, which is 8.2°C higher than the before; When the triethylene glycol divinyl ether (DVE-3) can change the reaction from UV free radical/cationic reaction into thermal radical/cationic reaction, and can be described by autocatalytic Šesták-Berggre model (S-B) and the average activation energy E_a is 70.55 kJ/mol.

• Periodical: Advanced Materials Research (Volume 746)
• Pages: 83-87
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.746.83
• Online since: August 2013
• Authors: Jun Gang Gao, Cong Tian, Xiao Jing Wu
• Keywords: Epoxy Resin (ER), Hybrid Cure, Kinetic, Polyurethane Acrylate, Siloxane

References

[1] Q. Wang, S. Ge, J. Li and Y. Zhao: Chemical Progress & Polymeric Materials, 7, 22-25 (2009).

[2] J.V. Crivello, J. Polym. Sci. Part A: Polym. Chem, 37(23), 4241-4254 (1999).

[3] S. Scognamillo, C. Bounds, M. Luger, A. Mariani and J.A. Pojman: J. Polym. Sci. Part A: Polym. Chem., 48, 2000-4005 (2010).

DOI: 10.1002/pola.23967

[4] K. Mitra: Chemical Engineering Journal, 162 (1), 322-330 (2010).

[5] F.L. Zhu, J.G. Gao, J.B. Yang and X.Q. Liu: Chinese Coatings Industry, 42(11), 8-12 (2012).

[6] J.V. Crivello: Photoinitiators, U.S. Patent 4, 136, 102, (1979).

[7] Z. S Yang and J.Q. Wang: Chinese Guangdong Chemical industry, 36 (139), 34-37 (2009).

[8] R.N. Brandalise, M. Zeni and J.D.N. Martins: Polymer Bulletin, 62: 33-43 (2009).

[9] H. E. Kissinger: Anal Chem, 29(11), 1702-1706 (1957).

[10] D. Rosu, A. Mititelu and C.N. Cascaval: Polym. Test., 23: 209-215 (2004).

[11] J. Mâlek: Thermochim. Acta, 200, 257-269 (1992).

[12] J. ˇSesta´k and G. Berggren: Thermochim. Acta, 3, 1-12 (1971).