文献类型：期刊文献

英文题名：Studies on pre-treatment by compression for wood impregnation II: the impregnation of wood compressed at different moisture content conditions

作者：Zhao, Youke[1,2] Zhao, Xin[2] Iida, Ikuho[3] Guo, Juan[2]

第一作者：赵有科

通信作者：Guo, J[1]|[a0005c616682e38d4137f]郭娟;

机构：[1]Chinese Acad Forestry, Res Inst Forestry New Technol, Dong Xiao Fu 1, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Dong Xiao Fu 1, Beijing 100091, Peoples R China;[3]Kyoto Prefectural Univ, Lab Wood Technol, Sakyo Ku, Shimogamo Nakaragi Cho, Kyoto 6068522, Japan

年份：2019

卷号：65

期号：1

外文期刊名：JOURNAL OF WOOD SCIENCE

收录：;EI(收录号：20192707124963);Scopus(收录号：2-s2.0-85068035196);WOS:【SCI-EXPANDED(收录号:WOS:000473242900001)】；

基金：This work was financially supported by the Fundamental Research Funds of Research Institute of Forest New Technology, CAF (Grant No. CAFYBB2017SY037).

语种：英文

外文关键词：Pre-treatment; Compression; Moisture content; Wood impregnation

摘要：As a follow-up report, the impregnation of wood pre-treated by compression at different moisture content (MC) conditions was systematically studied in terms of impregnation during the release of compression and impregnation after release of compression. The results showed that for poplar with MC from 210 to 38.9% and Chinese fir from 175 to 43%, the impregnation during and short time after the compression release increased rapidly and increased slowly afterward. The impregnation during the compression release accounted for a rather large portion of the total impregnation, while took a short time, suggesting that the pre-treatment by compression was very significant in terms of impregnation time and amount for wood above fiber saturation point. The specimens with higher MC before compression tended to reach the maximum impregnation in shorter time than those with lower MC. The impregnation during the release of compression decreased with the decrease in MC before compression. The impregnation after the release of compression increased with the decrease in MC for poplar, while decreased first and then increased for Chinese fir. As a result, when the MC was higher than maximum moisture content allowed (MMCA), with the decrease in MC, the total impregnation decreased from 0.45 to 0.30g/cm(3) for poplar and from 0.30 to 0.07g/cm(3) for Chinese fir; when the MC was lower than MMCA, with the decrease in MC, the total impregnation increased from 0.30 to 0.38g/cm(3) for poplar while from 0.07 to 0.16g/cm(3) for Chinese fir. After all, by means of pre-treatment of compression, wood with a MC around MMCA tended to have the lowest impregnation.