Studying the effect of acetylation Beech on interfacial bonding resistance of transparent paint (nitrocellulose lacquer, asid catalyzed lacquer and Half Ppolyester)

In this study, the effect of beech acetylation on the adhesion of transparent paints nitrocellulose lacquer, asid catalyzed lacquer and Half Ppolyester was evaluated. For this purpose, some boards from internal part of beech (Fagus Orientalis) with a relative humidity of 12%, and 12 × 110 × 110 mm was ptepared and were treated by the two levels of acetic anhydride; with the acetylation intensity of 12/5% and 15/5%. Then the two processes were coated separately by transparent paint of nitrocellulose lacquer, asid catalyzed lacquer and Half Ppolyester. The FT-IR test was used to ensure the acetylation process. The results of bond resistance test showed that using of the radial direction compared with tangential direction, the bond strength was higher. Among the samples, the sample treated with acetylation of % 15/5 intensity in comparison with control samples and The lowest percentage of loss of adhesion was observed in control samples.
Survey results showed that the coating by use of nitrocellulose lacquer, Half Ppolyester compared with coating by use of nitrocellulose lacquer, asid catalyzed lacquer, has a higher adhesion strength.