The Decay Resistance Properties of P. Ussuriensis Kom Lumber Impregnated with Preservative by Roller-compression
Waterborne preservative of DDAC and boride are used to impregnate P. ussuriensis Kom lumbers by roller compression under compression rates ranging from 10 percent to 50 percent. Results showed that the cranny in intervascular pit membranes appeared, and the cell wall of vessel element and fiber segment displayed drape and cranny due to roller compression. With the rise of compression rate, both the penetration depth of preservative and the retention quantity of preservative in the experimental lumber increased, while the mass loss rate decreased.The penetration depth perpendicular to the grain was more than 3.9 mm, while that parallel to the grain of wood was more than 20 mm when the compression rate was greater than or equal to 30 percent. Under the compression rate of 30 percent, the retention quantity of preservative in the experimental lumber impregnated with DDAC (thickness of 1 percent) was 8.743 kg/m3 and the mass loss rate was 14.36 percent, while those with boride (thickness of 2 percent) are 3.322kg/m3 and 9.92 percent.
Impregnating by compression rollers Wood preservation Retention quantity of preservative
SUN Yao-xing FANG Gui-zhen LIU Yi-xing
Department of Wood Engineering,Beihua University.No.3999,Hua Shan Road,Feng Man District,Ji Lin City Key Laboratory of Bio-based Material Science and Technology of Ministry of Education,Northeast Fores
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
947-952
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）