溶胶—凝胶法改良杉木人工林木材研究

陈 奎; 刘 衡; 涂东东; 符韵林

文章摘要

陈奎,刘衡,涂东东,符韵林.溶胶—凝胶法改良杉木人工林木材研究[J].林业调查规划,2024,49(4):226-230

溶胶—凝胶法改良杉木人工林木材研究

Improvement of Cunninghamia lanceolata Plantation Wood by Sol-Gel

DOI：

中文关键词: 溶胶—凝胶法木材改性杉木尺寸稳定性疏水性耐老化性

英文关键词: sol-gel wood modification Cunninghamia lanceolata dimensional stability hydrophobicity aging resistance

基金项目:

作者	单位
陈奎	广西国有高峰林场,广西南宁 530001
刘衡	中国林业科学研究院热带林业实验中心,广西凭祥 532600
涂东东	广西大学林学院,广西南宁 530004
符韵林	广西大学林学院,广西南宁 530004

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中文摘要:

为提高杉木人工林木材的尺寸稳定性、疏水性及耐老化性能,促进其增值利用。采用溶胶— 凝胶法对杉木人工林木材进行改性,并对改性材的尺寸稳定性、疏水性及耐老化等性能进行分析评价。结果表明,采用溶胶—凝胶法,杉木人工林木材的表面和内部空隙均产生SiO₂颗粒,与素材相比,改性材的吸水率和吸水厚度膨胀率均有所降低,尺寸稳定性明显提升;改性材耐老化性能提高 2.3倍;改性材的接触角显著变大,表明改性材疏水性显著提高。

英文摘要:

In order to improve the dimensional stability, hydrophobicity and aging resistance of Cunninghamia lanceolata plantation wood and promote its value-added utilization, the sol-gel method was used to modify Cunninghamia lanceolata plantation wood, and the dimensional stability, hydrophobicity and aging resistance of the modified wood were analyzed and evaluated in this paper. The results showed that SiO₂ particles were produced in the surface and internal voids of the Cunninghamia lanceolata plantation wood. Compared with the raw wood, the water absorption and swelling thickness of the modified wood were decreased, and the dimensional stability was significantly improved, the aging resistance of the modified material was improved by 2.3 times, and the contact angle of the modified material was significantly increased, indicating that the hydrophobicity of the modified material was significantly improved.

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