In this paper, isophorone diisocyanate (IPDI),
polyethylene glycol (PEG), dimethylolpropionic acid (DMPA) and internal
crosslinking agent trimethylolpropane (TMP) were used to prepare waterborne
polyurethane. And then double-crosslinked polyurethane-acrylic composite
aqueous dispersion was prepared in which polyacrylate was adopted to modify
waterborne polyurethane and some special external crosslinking agents were
added including silicone and trifunctional aziridine. The influence of the
amounts of internal and external crosslinking agents, emulsifier, initiator on
the particle size, particle size distribution, viscosity, molecular weight, as well as
water adsorption ratio were studied.
Cite this paper
N. Gao, Z. Zhang and Q. Dong, "Preparation and Properties of Two-Component and Double-Crosslinking Waterborne Polyurethane-Acrylic Dispersions," Open Journal of Organic Polymer Materials
, Vol. 3 No. 2, 2013, pp. 27-33. doi: 10.4236/ojopm.2013.32005
 W. S. Wang, C. Y. Pan and J. Ceng, “Synthesis of Cross Linking Aqueous Polyurethane,” Acta Polymerica Sinica, No. 3, 2000, pp. 319-324.
 H. Peng, G. F. Huang and Q. Lu, “Kinetics and Nucleation Mechanism of Silicone Emulsion,” Journal of Functional Polymers, Vol. 13, No. 2, 2000, pp. 173-176.
 F. Ling, “Single-Component and Self-Crosslinking Aqueous Emulsion Polyurethane Coating,” Application of Chemical Industry, Vol. 30, No. 2, 2001, pp. 29-31.
 F. A. Yan, “Development of Two-Component Waterborne Polyurethane Coatings,” Coatings Industry, Vol. 33, No. 5, 2003, pp. 37-39.
 P. Chen and J. M. Liu, “Effects of Cross Linking Agent on the Performance of Two-Component Waterborne Polyurethane Coating,” Coating Industry, Vol. 33, No. 5, 2003, pp. 9-11.
 J. Q. Qu, P. Wei and H. Q. Chen, “Synthesis and Characterization of Two-Component Waterborne Polyurethane,” School of Chemical Engineering Journal, Vol. 16, No. 2, 2002, pp. 212-216.
 C. H. Liu and Z. Q. Fang, “Preliminary Study for Waterborne Polyurethane-Acrylate Modified by Epoxy Resin,” Polyurethane Industry, Vol. 15, No. 3, 2002, p. 23.
 H. Kim, J. S. Shin and I. W. Cheong, “Seeded Emulsion Polymerization of Methyl Methacrylate Using Aqueous Polyurethane Dispersion: Effect of Hard Segment on Grafting Efficiency,” Colloids and Surfaces A, Vol. 207, No. 1-3, 2002, pp. 169-176.
 U. Sebenik, “Seeded Semibatch Emulsion Copolymerzation of Methyl Methacrylate and Butyl Acrylate Using Polyurethane Dispersion: Effect of Soft Segment Length on Kinetics,” Colloids and Surfaces A, Vol. 233, No. 1-3, 2004, pp. 51-62. doi:10.1016/j.colsurfa.2003.11.021