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
陈奎 1刘衡 2涂东东 3符韵林3
作者信息
- 1. 广西国有高峰林场,广西 南宁 530001
- 2. 中国林业科学研究院热带林业实验中心,广西 凭祥 532600
- 3. 广西大学 林学院,广西 南宁 530004
- 折叠
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.
Abstract
In order to improve the dimensional stability,hydrophobicity and aging resistance of Cunning-hamia 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 mod-ified 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.
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Key words
sol-gel/wood modification/Cunninghamia lanceolata/dimensional stability/hydrophobicity/aging resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据