文献类型：期刊文献

英文题名：EFFECT OF VACUUM HEAT TREATMENT TEMPERATURE ON PHYSICAL AND MECHANICAL PROPERTIES OF EUCALYPTUS PELLITA WOOD

作者：Wang Xue-hua[1] Fei Ben-hua[1] Liu Jun-liang[2]

第一作者：Wang Xue-hua

通信作者：Fei, BH[1]

机构：[1]Int Ctr Bamboo & Rattan, Beijing 100102, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2014

卷号：46

期号：3

起止页码：368-375

外文期刊名：WOOD AND FIBER SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000339412800007)】；

基金：This work was funded by the Chinese National Natural Science Foundation "Thermal effect and mechanism of wood under vacuum heat treatment," Grant No. 31370558, and China's "12th Five-Year Plan" to support science and technology project "Design, Building and Evaluation of Bamboo/Wooden Demonstration Room," Grant No. 2012BAD23B0105.

语种：英文

外文关键词：Eucalyptus pellita; vacuum heat treatment; physical property; modulus of elasticity; modulus of rupture

摘要：This study investigated how vacuum heat treatment influenced the physical and mechanical properties of Eucalyptus pellita wood. The investigated properties included mass loss, oven-dry density, dimensional stability, modulus of elasticity (MOE), and modulus of rupture (MOR). For the study, wood samples were heated under vacuum atmosphere at temperatures ranging from 80 to 280 degrees C for 4 h. The results showed that although the mass loss of wood showed only a slight change below 200 degrees C, there was a sharp increase in loss after 240 degrees C. Oven-dry density of wood decreased slowly with an increase of treatment temperature with decreases of 4.4 and 10.4% compared with the control sample observed at 200 and 240 degrees C, respectively. Conversely, the dimensional stability of samples increased by about 30% at 200 degrees C. As temperatures increased, MOE and MOR initially showed gradual enhancements before declining rapidly. Compared with the untreated sample, MOE increased by 25.2% at 200 degrees C, whereas MOR augmented by 6.5% at 160 degrees C. Vacuum heat treatment temperature between 160 and 200 degrees C would be available for improving dimensional stability and keeping mechanical strength of Eucalyptus pellita wood.