Effects of Compression Ratio and Resin Content on Dry and Wet Surface Roughness of Populus tomentosa Wood Scrimber
Surface roughness was one of the important factors to evaluate the surface quality and processing performance of wood materials.In this study,wood scrimber was prepared with Populus tomentosa veneer and phenolic resin using single-factor tests to investigate the effects of the compression ratios(50%,55%,59%)and resin contents(10%,15%,20%)on the dry and wet surface roughness of wood scrimber.The results showed that the effect of the compression ratio on dry and wet surface roughness was significant;the effect on dry surface roughness was greater than that on wet surface roughness.With the increase in compression ratio,the dry surface roughness of the wood scrimber decreased gradually,and the wet surface roughness increased gradually.The effect of the resin content on dry and wet surface roughness was significant;the effect on wet surface roughness was greater than that on dry surface roughness.With the increase of the resin content,both dry and wet surface roughness of wood scrimber decreased gradually.Compared with Populus tomentosa veneer,when the compression ratio was 59%and the resin content was 15%,the dry roughness parameters Ra and Rz of wood scrimber were reduced by 79.64%and 73.07%,respectively;the wet roughness parameters Ra and Rz were reduced by 62.85%and 50.00%,respectively.In the actual production process,the dry and wet surface roughness of the wood scrimber can be managed by controlling the compression ratio and resin content to meet the needs of different application scenarios.
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