AI Summary & Key Takeaways
AI InsightProcessing of sanding with lower grit sandpaper resulted in increased surface roughness while improved adhesion strength characteristics between the coating and the substrate.
📌 3 Key Takeaways
Abstract
The objective of this study was to determine effects of sanding and various surface smoothing processes on surface roughness and varnish adhesion of beech, oak and pine massive parquets. First of all, the parquet samples were classified into four groups. Fifteen parquet samples were used for each group. Parquet samples in first group were processed on thickness machine, samples in second group were processed on plane machine, and samples in third group were sanded with 60 grit sandpaper while the parquets in fourth group were sanded with 180 grit sandpaper, parallel to grain direction. The surface roughness of the samples were determined according to DIN 4768. After surface roughness measurements, parquet samples were coated with cellulosic varnish by using a spray gun at a spread rate on 120 g/m2. The adhesion of strength of the parquet samples were determined according to ASTM D 4541. According to the study results, the highest surface roughness values were obtained in oak, and there was no statistical difference between beech and pine. The adhesion strength values of beech parquets were higher than pine and oak parquets. Processing of sanding with lower grit sandpaper resulted in increased surface roughness while improved adhesion strength characteristics between the coating and the substrate.