文献类型：期刊文献

中文题名：溶剂置换材和气干材气体渗透性的比较研究

英文题名：COMPARATIVE STUDIES ON THE PERMEABILITY BETWEEN THE SOLVENT- EXCHANGED AND THE AIR-DRIED WOOD

作者：赵有科[1] 鲍甫成[1] 吕建雄[1]

第一作者：赵有科

机构：[1]中国林业科学研究院木材工业研究所

年份：2003

卷号：39

期号：1

起止页码：114-118

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目"针叶树木材微细结构对纵向和横向渗透性影响的比较研究"的一部分内容

语种：中文

中文关键词：气体渗透性;比较研究;渗透性;心材;边材;溶剂置换材;气干材;木材

外文关键词：Permeability, Heartwood, Sapwood, Solvent exchange drying, Air drying

分类号：S781.3

摘要：对杉木、马尾松各 5株生材进行了不同体积分数的酒精、丙酮和戊烷溶剂逐级过渡置换及气干 ,并通过水上升置换法对溶剂置换材和气干材的心材和边材流体渗透性进行了测定与分析。结果显示 :杉木和马尾松溶剂置换材的总体平均渗透性比气干材的渗透性高。杉木溶剂置换干燥生材心材为 2 1 6× 1 0 - 1 2m3·m- 1 ,气干材心材为 0 .1 1× 1 0 - 1 2 m3·m- 1 ,前者是后者的 1 9.7倍 ;杉木溶剂置换干燥生材边材为 4.72×1 0 - 1 2 m3·m- 1 ,气干材边材为 0 .99× 1 0 - 1 2 m3·m- 1 ,前者是后者的 4.7倍 ;马尾松溶剂置换干燥生材心材为 0 3 9× 1 0 - 1 2 m3·m- 1 ,气干材心材为 0 1 7× 1 0 - 1 2 m3·m- 1 ,前者是后者的 2 3倍 ;马尾松溶剂置换干燥生材边材为5 3 1× 1 0 - 1 2 m3·m- 1 ,气干材边材为 0 84× 1 0 - 1 2 m3·m- 1 ,前者是后者的 6 3倍。气干材和溶剂置换材的边材渗透性均大于对应的心材渗透性。溶剂置换对渗透性的影响 ,边材比心材明显。无论是杉木还是马尾松 ,较之于气干材 ,溶剂置换使得边材的渗透性均有较大程度的提高 ,而心材的渗透性 ,多数试材有一定程度的提高 ,少数则变化很小或有一定降低。
A series of solvent exchanged treatments (by means of ethanol, acetone and pentane in different concentrations), and air dried treatment, were made on the greenwood specimens from 5 trees of Chinese Fir (Cunninghamia lanceolata ) and 5 trees of Masson Pines ( Pinus massoniana ) plantation. The permeability of these solvent\|exchanged and the air dried specimens of both heartwood and sapwood were measured by means of rising water displacement method. The results showed the average permeability of the solvent\|exchanged specimens of the heartwood and sapwood both in common Chinese Fir and Masson Pine were higher than those of the air dried respectively. The permeability of heartwood of the solvent exchange dried common Chinese Fir was 2 16×10 -12 m 3·m -1 , while that of air\|dried was 0 11×10 -12 m 3·m -1 , 19.7 times smaller than the former. The permeability of sapwood of the solvent exchange dried common Chinese Fir was 4.72×10 -12 m 3·m -1 , while that of air\|dried was 0.99×10 -12 m 3·m -1 ,4.7 times smaller than the former. The permeability of heartwood of the solvent exchange dried Masson Pine was 0.39×10 -12 m 3·m -1 , while that of air dried was 0.17×10 -12 m 3·m -1 , 2.3 times smaller than the former. The permeability of sapwood of the solvent exchange dried Masson Pine was 5.31×10 -12 m 3·m -1 , while that of air\|dried was 0.84×10 -12 m 3·m -1 , 6.3 times smaller than the former. The permeability of sapwood of both air dried and the solvent exchange dried specimens were bigger than the heartwood. Within tree comparison showed the average permeability of almost all of the sapwood of solvent exchanged specimens was higher than that of the air dried, while most of the solvent exchanged heartwood was higher than that of the air dried despite some has no change or even lower.