Iranian Journal of Wood and Paper Industries (Jan 2012)
The Effect of Clear Paints, Nanozycofil and Nanozycosil on Water Absorption and Contact Angle of Poplar Wood
Abstract
In this research, the effect of nano-zycosil, nano-zycofil, acid catalyzed lacquer and nitrocellulose lacquer and polyester on improving the water absorption and contact angle of wood was investigated. Some boards were prepared from the sapwood of poplar (P.nigra). They were dried based on T6E3 schedule and some specimens were cut according to EN 927-5 standard (20 × 70 × 150 mm). They were coated and immersed with the nano particles and clear paints. The clear paint- and nanoparticles-coated samples were dried in laboratory environment and in an oven at the temperatures of 1032°c, respectively. After drying process, the water absorption of the samples was measured after 2, 24, 72, 168 h immersion. The contact angle of samples was measured after 1 and 10 seconds. The results revealed that the pattern of water absorption for the paints and nanoparticles is different. The samples coated with combined acid catalyzed lacquers and nitrocellulose lacquers and those coated with nanozycosil had the highest resistance to water absorption. The greatest contact angle was observed for the samples coated by nanozycosil.
