桉树人工林木材的干燥特性及干燥基准研究  

A Study of Drying Characteristics and Drying Schedules of Eucalyptus Plantation Wood

作　　者：刘元[1] 吴义强[1] 乔建政 朱林锋 

机构地区：[1]中南林学院工业学院,中国湖南株洲412006

出　　处：《中南林业科技大学学报》2002年第4期44-49,共6页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金项目(30170754)"我国主要桉树人工林树种木材的材性性状遗传分析";湖南省教育厅重点项目(010A)"局部水蒸气爆破法实现速生桉树人工林木材高附加值产业化的利用技术研究".

摘　　要：　采用百度试验法,结合常规干燥、真空干燥、常规-真空联合干燥三种不同干燥方式,研究了圆角桉和柠檬桉人工林木材干燥特性和干燥基准.结果表明:两桉材前期开裂和皱缩比较严重,截面变形达到5级,属难干材,特别是含水率在30%以上时,干燥速度不宜过快,并须要对其进行前期、中期及终期处理.综合考虑干燥速度与干燥质量,常规-真空联合干燥是其较为理想的干燥方法.The drying characteristics and drying schedules of E.umbellate and E.citriodora from Eucalyptus plantation wood were investigated with the drying test at 100℃ as well as the conventional drying, vacuum drying, and the combination drying. The results show that the preperiod cracks and collapses of the two Eucalyptus plantation woods are serious; that the crosssection deformation reaches the 5th class; therefore, the wood is difficult to dry; and particularly, the drying speed couldn't be too fast when the moisture content is over 30%; and that prophase, metaphase and end period managements should be conducted. It is a conclusion that combination of the conventional drying and vacuum drying is a desirable method with respect to the drying speed and quality.

关 键 词：桉树 人工林木材 百度试验 干燥特性 干燥基准 

分 类 号：S781.71[农业科学—木材科学与技术]