热处理对桉树木材抗湿胀性能的影响  

Effect of Thermal Treatment on Anti-Swelling Characteristics of Eucalyptus

作　　者：曹永建[1] 王颂 李怡欣[1] 李兴伟[1] 王剑菁[1] 谢桂军[1] 李万菊 

机构地区：[1]广东省林业科学研究院/广东省森林培育与保护利用重点实验室,广东广州510520

出　　处：《林业与环境科学》2017年第6期20-23,共4页Forestry and Environmental Science

基　　金：广东省省级科技计划项目"珍贵树种培育创新团队建设"(2016B070701008)

摘　　要：热处理是显著提高木材尺寸稳定性的重要途径之一。该研究采用完全随机区组设计方法,以处理温度180~220℃、处理时间1~5 h等不同组合条件在真空度为-0.08 MPa的密闭容器内对木材进行热处理,测定了尾叶桉(Eucalyptus urophylla)、尾巨桉(E.urophylla×E.grandis)、巨桉(E.grandis)3种木材的体积从全干至全湿过程中的体积变化率。结果表明,尾叶桉、尾巨桉、巨桉3种木材的抗湿胀性能分别提高了6.60~59.27、6.72~64.91和11.85~60.02个百分点。Thermal treatment is one of the high-efficiency methods to improve the dimensional stability of wood. In this study, Eucalyptus urophylla, E. urophylla × E. grandis and E. grandis were treated at temperatures of 180-220 ℃ for 1-5 h, respectively, then the efect of thermal treatment on the anti-swelling efciency of wood was investigated based on wood sample from absolute-dry, air-dry to absolute-wet volumes according to the method of Random Complete Block Design. The results showed that, under the treatment conditions above mentioned, the anti-swelling efciency of E. urophylla, E. urophylla × E. grandis and E. grandis was increased by 6.60-59.27、6.72-64.91 and 11.85-60.02 percentage point respectively. Thermal treatment has a signifcant contribution to extend the utilizable felds of eucalyptus resources.

关 键 词：热处理 桉树 抗湿胀率 

分 类 号：S781.62[农业科学—木材科学与技术]