Collapse-type Shrinkage in Plantation-grown Eucalyptus Cells When Subjected to Heat-steam Treatment
Collapse-type shrinkage in plantation-grown Eucalyptus cells is a bottleneck to severely restrict its high-effective utilization as environment-friendly solid-wood products. So, measurement of collapse-shrinkage parameters on seven species of Eucalypts (Eucalyptus urophylla, E.grandis,E.urophyllaxgrandis, E.grandis xurophylla, E. dunnii, E. cloeziana and E. pellita) have been carried out under three kinds of treated patterns (heating, steaming and combined treatment) by means of image analysis technique. The results indicated that the total shrinkage and residual collapse increase obviously with heating temperature and steaming time for five species of low-density eucalypts(E.urophylla, E.grandis, E.urophyllaxgrandis, E.grandis xurophylla and E. dunnii), while increase slightly for other two species of higher-density Eucalypts (E.cloeziana and E.pellita).Combined treatment has not made the total shrinkage and residual collapse take on the additive trend, especially for higher-density Eucalyptus. Therefore, the results will provide the important practical significance for the reasonable processing of plantation-grown eucalypt wood.
collapse-type shrinkage total shrinkage residual collapse heat treatment steaming treatment combined treatment plantation-grown eucalypt
WU Yi-qiang KAZUO Hayashi CAI Ying-chun
College of Material Science and Engineering, Central South University of Forestry and Technology, Ch United Graduate of Agricultural Sciences (UGAS), Ehime University, Japan 790-8566 College of Material Science and Engineering, Northeast Forestry University, China 150040
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
217-220
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）