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, Ben-Hua

机构：[1] International Centre for Bamboo and Rattan, Beijing, 100102, China; [2] Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, 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：EI(收录号：20154501491905)

语种：英文

外文关键词：Heat treatment - Atmospheric temperature - Ovens - Wood

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°C for 4 h. The results showed that although the mass loss of wood showed only a slight change below 200°C, there was a sharp increase in loss after 240°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°C, respectively. Conversely, the dimensional stability of samples increased by about 30% at 200°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°C, whereas MOR augmented by 6.5% at 160°C. Vacuum heat treatment temperature between 160 and 200°C would be available for improving dimensional stability and keeping mechanical strength of Eucalyptus pellita wood. ? 2014 by the Society of Wood Science and Technology.