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Highly Hydrophobic and Self-Cleaning Heat-Treated Larix spp. Prepared by TiO2 and ZnO Particles onto Wood Surface
Coatings ( IF 3.4 ) Pub Date : 2020-10-16 , DOI: 10.3390/coatings10100986
Dong Xing , Yan Zhang , Jianpeng Hu , Lihong Yao

The deposition of TiO2/ZnO on heat-treated wood was prepared by a hydrothermal reaction and sol-gel method. Highly hydrophobic wood was successfully prepared with low surface free energy. The surface-modified wood samples were characterized by 3D-laser shape measurement microscopy, scanning electron microscopy, energy-dispersive spectroscopy, and Fourier transform infrared spectroscopy for the microstructure and chemical composition investigation. The deposited TiO2 or ZnO markedly made the wood surface brighter, which was demonstrated by visual observation and spectrophotometer. The TiO2/ZnO particles were successfully loaded onto the surface of the wood, proven by SEM-EDS and FTIR analyses. The contact angle of TiO2 and ZnO-modified wood reached 123.9° and 134.1° respectively, which is obviously higher than that of the control at 88.9°. The hydrophobic properties of the TiO2/ZnO modified wood samples were directly related to the shapes of clusters and spheres of particles, which increased the roughness of the wood surface. This study shows the hydrophobic properties of the TiO2/ZnO-modified wood and provides the color and roughness changes for the painting process of heat-treated wood.

中文翻译:

高度疏水和自清洁的热处理落叶松属。由TiO2和ZnO颗粒在木材表面制备

通过水热反应和溶胶-凝胶法制备了TiO 2 / ZnO在热处理木材上的沉积。用低表面自由能成功制备了高疏水性木材。通过3D激光形状测量显微镜,扫描电子显微镜,能量分散光谱和傅里叶变换红外光谱对表面改性的木材样品进行表征,以进行微观结构和化学成分研究。目视观察和分光光度计表明,所沉积的TiO 2或ZnO使木材表面更亮。通过SEM-EDS和FTIR分析证明,TiO 2 / ZnO颗粒已成功加载到木材表面。TiO 2的接触角ZnO和ZnO改性木材分别达到123.9°和134.1°,明显高于对照的88.9°。TiO 2 / ZnO改性木材样品的疏水性与颗粒簇和球形的形状直接相关,从而增加了木材表面的粗糙度。这项研究表明了TiO 2 / ZnO改性木材的疏水性,并为热处理木材的涂漆过程提供了颜色和粗糙度的变化。
更新日期:2020-10-17
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