文献类型：期刊文献

英文题名：Studies on pre-treatment by compression for wood drying III: the reduction of moisture content, the recovery rate, and mechanical properties of wood compressed at different moisture content conditions

作者：Zhao, Youke[1]

第一作者：赵有科

通信作者：Zhao, YK[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Dong Xiao Fu 1, Beijing 100091, Peoples R China

年份：2017

卷号：63

期号：3

起止页码：209-215

外文期刊名：JOURNAL OF WOOD SCIENCE

收录：;EI(收录号：20171003408395);Scopus(收录号：2-s2.0-85014115580);WOS:【SCI-EXPANDED(收录号:WOS:000402831900002)】；

基金：Author gratefully acknowledges the financial support from State Forestry Administration 948 Project (2011-4-19) and the laboratory assistance by Ms. Xin Zhao.

语种：英文

外文关键词：Pre-treatment; Compression; Moisture content; Recovery rate; Mechanical properties

摘要：As a follow-up report, the pre-treatment by compression for wood drying was systematically studied in terms of the reduction of moisture content (MC), the recovery rate (RR), and mechanical properties of wood compressed at different MC conditions. The results showed that MC after compression on water-saturated wood determined the critical value of MC before compression which were about 84 and 105% at a compression ratio of 60 and 40% for Poplar and Chinese fir, respectively. Beyond the critical value, MC after compression remained constantly at about 84% and decreased slightly from 105% for Poplar and Chinese fir, respectively. The MC reduction decreased with the decrease of MC before compression. The MC reduction was rather effective when the MC before compression was higher than the critical value and was recommended to pre-treat for the effectiveness of MC reduction. In addition, after the recovery, the wood volume and mechanical properties were well retained for the wood compressed at all MC conditions which were above fiber saturation point (FSP) before and after compression. Therefore, the pre-treatment by compression is viable in terms of the RR and mechanical properties at rather broad MC conditions above FSP. Moreover, the compression force needed for treatment was almost same at these MC conditions.