辊压浸注处理大青杨木材的防腐性能  

Decay Resistance Properties of Populus ussuriensis Lumber Impregnated with Preservative by Roller Compression

作　　者：孙耀星[1] 方桂珍[2] 刘一星[2] 

机构地区：[1]北华大学,吉林132013 [2]生物质材料科学与技术教育部重点实验室(东北林业大学)

出　　处：《东北林业大学学报》2009年第8期39-41,共3页Journal of Northeast Forestry University

基　　金：国家林业局"948"项目(20040443);吉林省科技发展计划项目(20070704)

摘　　要：使用DDAC和硼化物2种水载型防腐剂对饱水大青杨板材进行辊压浸注处理,并进行耐腐等级评定,压缩率为10%～50%。研究结果表明:辊压处理能造成导管间纹孔膜破裂,在细胞壁上和胞间层中形成褶皱和裂隙;随着压缩率的增大,药剂透入深度增大,试材载药量增加,试样质量损失率减小;当压缩率为30%及以上时,药剂横向透入深度大于3.9mm,纵向透入深度大于20mm;30%压缩率浸注DDAC(质量分数1%)的试材载药量为8.743kg/m3、质量损失率为14.36%,30%压缩率浸注硼化物(质量分数2%)的试材载药量为3.322kg/m3、质量损失率为9.92%。Waterborne preservative of DDAC and boride were used to impregnate P. ussuriensis 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/m^3 and the mass loss rate was 14.36 percent, while those with boride （thickness of 2 percent）were 3. 322 kg/m^3 and 9.92 percent.

关 键 词：辊压浸注 木材防腐 载药量 

分 类 号：S781.2[农业科学—木材科学与技术]