writer：Fa-Ai Zhang, Cai-Li Yu
keywords：Acrylic emulsions, Polyisocyanate,
source：期刊
specific source：Journal of coatings technology and research, 2007, 4(3), 289-294
Issue time：2007年

Two-component water-borne polyurethane (2K WBPU) coatings were prepared using a silicone-modified acrylic emulsion as the hydroxyl component and hydrophilically-modified polyisocyanate as the curing agent. The effects of the levels of silicone monomer and hydroxyl values on the film properties of the 2K WBPU coatings were investigated. Infrared spectroscopy characterized its structure. Scanning electron microscopy (SEM), thermo-gravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to study the surface morphology and the thermal stability of the film. The results showed that the performance of the coatings and the thermal stability of the film of 2K WBPU were improved after silicone modification.