Modified Technology of Dimensional Stability of Eucalypt Wood based on Non-tozic Chemical Pollution
Treatment of dimensional stability of plantationgrown eucalypt timbers should be carried out when they are used as the higher value-added solid-wood products. Chemical modification with non-toxic chemical pollution is one of the most effectual approaches to improve the dimensional stability of eucalypt wood. Therefore, the modified technologies on improvement of the dimensional stability of eucalypt wood have been systematically investigated by using urea-formaldehyde and maleic acid-glycerol, and the related anti-shrinkage indexes have been measured. The results show that the better modified processing, can be obtained when using Maleic Acid-Glycerol solution directly, i.e. the concentration: 30％, temperature: 60 ℃, molar ratio: 1:1, and penetration concentration of agent: 1.2％. while using urea-formaldehyde solution could not reached such ideal effect. Maleic Acid-Glycerol solution can increase the coefficient of anti-shrinkage, and decrease the coefficient of the radial and tangential shrinkage owing to its filling wood cell. This research will provide the theoretical base for extending utilization of eucalypt wood as the solid-wood products.
Eucalypt wood dimensional stability Maleic Acid-Glycerol solution urea-formaldehyde solution coefficient of antishrinkage coefficient of weight gained
QING Zhi-yong WU Yi-qiang YUAN Guang-ming YAO Chun-hua QING Yan
College of Materials Science and Engineering Central South University of Forestry and Technology Changsha,410004,P.R.China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）