目的 提高人造板的尺寸稳定性及使用价值。 方法 采用高温水热处理来脱除杨木刨花中部分半纤维素， 研究处理温度及时间对脱除效果的影响， 并测试刨花压制板的力学性能及吸水膨胀性能。结果 处理后的刨花组分含量发生变化， 大部分半纤维素被脱除， 半纤维素的脱除对刨花原料的润湿性有影响。在处理温度为170 ℃， 处理时间为60 min时， 刨花的质量损失率最高 （24.9%）， 所压制板材的防潮性能的提高幅度最大 （13.4%）， 而力学性能有所降低， 其静曲强度为14.4 MPa， 内结合强度为0.53 MPa。结论 刨花原料经高温水热处理能够提升其压制板材的防潮性能。

The purpose of this study was to improve the dimensional stability and end-use value of the wood-based panel. The effects of experimental parameters such as temperature and time on the effectiveness and efficiency of hemicellulose extraction from poplar particles by high-temperature hydrothermal treatment were studied. And the mechanical performance and swelling properties of the particle board were tested. The results showed that high-temperature hydrothermal treatment had strong influence on the composition of particles, with most hemicelluloses removed, which influenced the wettability of particles. The mass-loss rate reached a maximum of MS:24.9% upon 60 minutes of treatment at 170 ℃. The panels made of treated materials showed an maximum improvement in moisture absorption property (13.4%) at small sacrifice of mechanical properties (MOR: 14.4 MPa， IB: 0.53 MPa). In conclusion, high-temperature hydrothermal treatment could improve the moisture absorption property of particle board.