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Finishing performance of Acacia mangium wood surface-treated with methanol
Published in The Journal of Adhesion, 2022
Redzuan Mohammad Suffian James, Paridah Md Tahir, Lee Seng Hua, Ummi Hani Abdullah, Mohd Khairun Anwar Uyup, Norwahyuni Mohd Yusof, Izwan Johari
The ASTM D-3023 specifications were followed during the lacquer applications. Flow time was subjected to the standard test method for the viscosity of the ford viscosity cup no. 4.[15] The coating was applied to the samples in four sequential steps: base coat (2 layers) and top coat (2 layers) in parallel and across the grain by spraying. For each layer, sanding was carried out using sanding paper of the sizes P100s, P180s and P320s prior to applying the next coating layer. The finishing process was carried out in the water wash spray booth at a temperature of 32 ± 2°C and a relative humidity of 74 ± 5% was achieved with three repeats. The coated sample remained in the conditioned room for another 2 weeks at a temperature of 23 ± 2 °C and a relative humidity of 65 ± 5% for a week.