Effects of Heat Treatment on Dimension Stability of Larch Pallet Decks  

作　　者：Xue-Chun Yang Bing Wang Jin-Zhuo Wu Xiao-Qi Xing Shi-Jun Yang 

机构地区：[1]College of Engineering and Technology,Northeast Forestry University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2013年第3期75-80,共6页哈尔滨工业大学学报（英文版）

摘　　要：The useful life of wooden pallets is lower because of the defects in lumbers. The quality of lumber can be significantly enhanced by heat treatment. In this paper,the larch pallet decks samples were heat-treated under the conditions of different time and temperatures. The quantity of water uptake has reduced 16. 8% under the condition of 250 ℃ for 150 min. The resistance of water absorption efficiency increases 165. 34% under the condition of 175 ℃ for 90 min. The anti-shrink efficiency increases 72. 08% under the condition of 250 ℃ for 90min. The results showed that the dimension stability of larch panels can be improved by heat treatment. The condition of 250 ℃ for 180 min is the best heat treating condition to improve the dimension stability.The useful life of wooden pallets is lower because of the defects in lumbers. The quality of lumber can be significantly enhanced by heat treatment. In this paper,the larch pallet decks samples were heat-treated under the conditions of different time and temperatures. The quantity of water uptake has reduced 16. 8% under the condition of 250 ℃ for 150 min. The resistance of water absorption efficiency increases 165. 34% under the condition of 175 ℃ for 90 min. The anti-shrink efficiency increases 72. 08% under the condition of 250 ℃ for 90min. The results showed that the dimension stability of larch panels can be improved by heat treatment. The condition of 250 ℃ for 180 min is the best heat treating condition to improve the dimension stability.

关 键 词：larch pallet heat treatment resistance of water absorption efficiency anti-shrink efficiency dimension stability 

分 类 号：S7[农业科学—林学]