压缩-热处理联合改性对杨木尺寸稳定性的影响

蔡家斌; 丁涛; 杨留; 杨旭

doi:10.19455/j.mcgy.2012.05.011

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压缩-热处理联合改性对杨木尺寸稳定性的影响
Effect of Heat Treatment and Densification on Dimensional Stability of Poplar Wood
1. 南京林业大学木材工业学院
2012年26卷第5期页码：41-44
DOI： 10.19455/j.mcgy.2012.05.011

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[1]蔡家斌,丁涛,杨留,杨旭.压缩-热处理联合改性对杨木尺寸稳定性的影响[J].木材工业,2012,26(05):41-44.

CAI Jia-bin, DING Tao, YANG Liu, et al. Effect of Heat Treatment and Densification on Dimensional Stability of Poplar Wood[J]. China Wood Industry, 2012,26(5):41-44.
[1]蔡家斌,丁涛,杨留,杨旭.压缩-热处理联合改性对杨木尺寸稳定性的影响[J].木材工业,2012,26(05):41-44. DOI： 10.19455/j.mcgy.2012.05.011.

CAI Jia-bin, DING Tao, YANG Liu, et al. Effect of Heat Treatment and Densification on Dimensional Stability of Poplar Wood[J]. China Wood Industry, 2012,26(5):41-44. DOI： 10.19455/j.mcgy.2012.05.011.

摘要

为改善杨木质软、强度低的特点,同时提高其尺寸稳定性,首先对杨木试样进行压缩处理,再进行热处理,并检测压缩杨木和热处理压缩杨木的吸湿、吸水膨胀率。结果表明:压缩率愈大,压缩杨木试样厚度方向和体积膨胀率愈大;经热处理后,试样的尺寸稳定性明显提高。

Abstract

Poplar samples were hot pressed for 15～35 min with different compression temperatures from 130～170 ℃ and then heat treated from 180～200 ℃ for 1.5～3.5 hours.The results showed that adsorption and water absorption expansion rates of the densified samples increased when the compression temperatures increased.The heat treatment could improve the dimensional stability of densified poplar wood.