%0 Journal Article
%T Utilization of compressed Chinese fir thinning wood<br>杉木间伐材压缩密化利用的研究
%A CHEN Ruiying
%A WEI Ping
%A LIU Jinghong
%A <br>陈瑞英
%A 魏萍
%A 刘景宏
%J 应用生态学报
%D 2005
%I 
%X With Chinese fir thinnings as raw material, and through measuring the physical-mechanical indices of its compressed wood, observing the variation of its microstructure and using IR analysis, an optimized technique of compressing Chinese fir thinnings was established. The technique was: compression ratio 50%-60%, thickness after compression 20 mm, moisture content before compression 50%, compressing time 20-30 minutes, and hot compressing temperature 180-200 degrees C. CH, an environmentally friendly cooking additive, had positive effects on softening the wood. During compressing, only the cells of fast-growing Chinese fir were extruded, their cavity became smaller, while the cell wall was not destroyed. The thickness reversion ratio of compressed wood was 2.68%, and its size stability and mechanical quality were as good as hardwoods (Betula lumninifera).
%K Chinese fir thinning wood
%K Compression
%K Physical-mechanical quality
%K Microstructure<br>杉木间伐材
%K 压缩密化
%K 物理力学性能
%K 微观结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=4CF50E056B6F421D&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=59906B3B2830C2C5&sid=62430EC5AE2C2006&eid=0F47065E4B85EC48&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=5&reference_num=15