812 圧密化木材の変形と膨潤に及ぼす年輪の影響

概要

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Japanese cedar sapwood specimens were softened at 80℃ and compressed to 0,10,30,50 and 70% in the radial direction, then the compressive deformations were fixed permanently by steam treatment at temperature 175℃ for 10 minutes. In this study behavior of swelling and shrinkage of the compressed wood fixed permanently by steam treatment was investigated. Remarkable difference in shape of deformed cell of the compressed wood was observed between dry condition and wet condition. It is confirmed that the volume changes of wood with sorption and desorption of the compressed wood were caused by the change of cell wall thickness and the change of deformed cell shape. These result shows that the change of cell shape has a great effect on the dimensional change of the compressed wood.
一般社団法人日本機械学会の論文
2003-08-05