Poplar (P.ussuriensis Kom) wood has been subjected to roller compression treatment with 10%, 20%, 30%, 40% and 50% of compression ratios in this study. The effects of water impregnating time, drying time and re-compression times on moisture content (MC) were investigated. The studies revealed that reduction in MC increased following the increasing of compression ratio. The MC reduction for tangential compression was found to be greater than that for radial compression. After 5 min impregnation in water, the ratio of MC decline of roller-compressed wood (RCW) samples tended to slow down. After impregnation for 95 min, the MC of RCW was less than wood samples without treatment (untreated). In addition, during the dry process at 100°C, the MC reduction for RCW samples was found to be greater than for untreated samples. Particularly, the drying time could be saved more than 20% with 50% compression ratio. Moreover, the MC of RCW samples subjected to 1, 3, 5, and 8 times re-compression treatment (RCT) was found to be reduced gradually for increasing re-compression times. The MC can be reduced half to the initial MC after 3 times re-compression, when the compression ratio was over 40%.
|ジャーナル||Journal of the Faculty of Agriculture, Kyushu University|
|出版ステータス||出版済み - 2020|
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