乙酰化度与处理材的尺寸稳定性  

THE RELATIONSHIP BETWEEN ACETYLATED DEGREE AND THE DIMENSIONAL STABILITY OF TREATED WOOD

作　　者：陆文达[1] 赵广杰[1] 周亚光 沈隽[1] 曲艳杰[1] 

机构地区：[1]东北林业大学

出　　处：《东北林业大学学报》1995年第5期72-75,共4页Journal of Northeast Forestry University

基　　金：国家自然科学基金

摘　　要：将红皮云杉（Ｐｉｃｅａｋｏｒａｉｅｎｓｉｓ）和大青杨（Ｐｏｐｕｌｕｓｕｓｓｕｒｉｅｎｓｉｓ）木材试样进行无催化剂液相乙酰化处理（ｔ＝（１２０±３）℃），测试了乙酸化度（增重率）与试样尺寸、体积和平衡含水率变化之间的相关关系，结果表明：相同处理条件下，红皮云杉的乙酰化度高于大青杨；乙酸化度以２５％～３０％为宜；处理试样的尺寸、体积和平衡含水率的变化与乙酰化度呈直线相关。The wood samples of Picea koraiensis and Populus ussuriensis were treated by liquid acetylation without catalyst (t=(120±3)℃). The relationship were studied between acetylated degree (e. g. weight gain percent) and the change of dimension, volume and Equilibrium Moisture Content (EMC) of wood samples.The results show as follows: (1) Under the same conditions of treatment. the acetylated degree of Picea koraiensis is higher than that of Populus ussuriensis. (2) In general, the treatment of 25%～30% acetylated degree is suitable. (3) The relationship between acetylated degree and the change of dimension, volume and EMC of wood samples is linear correlation.

关 键 词：红皮云杉 大青杨 增重率 乙酰化度 平衡含水率 

分 类 号：S782.3[农业科学—木材科学与技术]