To improve the hydrophobicity and moisture resistance of wood, a hydrophobic coating using tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) as precursors was prepared on a wood surface via sol–gel and post-aging heat treatment. The effects of the MTES/TEOS molar ratio and aging heat treatment temperature on the properties of the MTES/TEOS coatings based on a co-precursor (M/T-based) were analyzed. The coating structures were analyzed by Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analyzer. The results indicated that a higher MTES/TEOS molar ratio increased the hydrophobicity of the coatings because of a higher silica content or a higher coverage of the surface by methyl groups. However, the hydrolysis-condensation reaction of TEOS decreased when an excessive amount of MTES was used, decreasing the hydrophobicity of the coating. Moreover, with an increase in aging heat treatment temperature, the coated wood improved its resistance to wetting; however, the stability of the M/T-based sol decreased, and the particles agglomerated. Thermogravimetric analysis/infrared spectrometry results showed that the coatings exhibited good heat resistance and enhanced the thermal stability of the wood. Adhesion testing results indicated that the coatings exhibited good adhesion to the wood substrates.

为了提高木材的疏水性和耐湿性，使用四乙氧基硅烷（TEOS）和甲基三乙氧基硅烷（MTES）作为前体的疏水涂层通过溶胶-凝胶和时效后热处理制备在木材表面上。分析了MTES / TEOS摩尔比和时效热处理温度对基于共前体（基于M / T）的MTES / TEOS涂层性能的影响。通过傅立叶变换红外光谱，扫描电子显微镜和热重分析仪分析涂层结构。结果表明，较高的MTES / TEOS摩尔比可提高涂层的疏水性，因为较高的二氧化硅含量或较高的甲基被表面覆盖率。但是，当使用过量的MTES时，TEOS的水解-缩合反应降低，降低涂层的疏水性。而且，随着时效热处理温度的升高，涂覆木材提高了其抗湿性。然而，基于M / T的溶胶的稳定性降低，并且颗粒附聚。热重分析/红外光谱结果表明，该涂层表现出良好的耐热性并增强了木材的热稳定性。附着力测试结果表明，涂​​料对木质基材表现出良好的附着力。热重分析/红外光谱结果表明，该涂层表现出良好的耐热性并增强了木材的热稳定性。附着力测试结果表明，涂​​料对木质基材表现出良好的附着力。热重分析/红外光谱结果表明，该涂层表现出良好的耐热性并增强了木材的热稳定性。附着力测试结果表明，涂​​料对木质基材表现出良好的附着力。