Study of the Effect of Nano Zinc Oxide and Nano Titania Particles as UV Stabilizer in the Waterborne Polyurethane Coatings in Accelerated Weathering Conditions

Rashvand, M.; Ranjbar, Z.

Study of the Effect of Nano Zinc Oxide and Nano Titania Particles as UV Stabilizer in the Waterborne Polyurethane Coatings in Accelerated Weathering Conditions

Authors

M. Rashvand ¹
Z. Ranjbar ²

¹ Department of Surface Coatings and Corrosion, Institute for Color Science and Technology

² Department of Surface Coatings and Corrosion;Center of Excellence for Color Science and Technology, Institute for Color Science and Technology

Abstract

Recently, demands for the automotive coatings with good protective resistance and better appearance are grown up. So that in this research two kinds of UV stabilizer, nano Zinc Oxide and nano Titania were used in an automotive corrosion resistant primer to improve the light resistance of coatings. After that the corrosion resistance of the nano composite coatings, under some accelerated weathering condition like dry UV cabin and immersion in 3.5 wt% NaCl solutions were studied. The results show that presence of these additives even in a small amount could improve about 10 times the UV stability and corrosion resistance of coatings.

Keywords