Super-hydrophobic wood and preparation method thereof

Abstract

The invention discloses super-hydrophobic wood. The surface of the super-hydrophobic wood is covered with a composite film layer which is formed by settling silane coupling agents which are wrapped by nano particles after hydrolysis and polycondensation. Chemical bonding is generated between the composite film layer and the wood through the hydroxyl action, and the composite film layer contains uniform micron-size grooves and nano-size protrusions and is assembled with low-surface-energy materials. The water drop contact angle of the super-hydrophobic wood reaches 150-156 degrees, and the rolling angle is smaller than 4 degrees. The nano particles are one or more kinds of nano SiO2, nano TiO2, nano Al2O3, nano ZnO and nano Fe3O4. According to a preparation method, alkali treatment is carried out on the wood firstly, and then reaction liquid containing hydrophobic materials deposits on the surface of the wood subjected to alkali treatment through a gas-phase deposition reaction, so that the super-hydrophobic wood is obtained. The super-hydrophobic wood is high in hydrolytic resistance. The steps of the preparation method are simple, the reaction conditions are easy to realize, and the preparation period is short.

Description

technical field [0001] The invention relates to the field of wood modification, in particular to a superhydrophobic wood and a preparation method thereof. Background technique [0002] As an ancient and young green and environmentally friendly material, wood is widely used in daily life, such as wooden houses, wooden boats, wood carvings, etc. Wood is mainly composed of cellulose, hemicellulose, lignin, etc. Cellulose and hemicellulose are rich in groups such as hydroxyl groups with strong hygroscopicity, so wood has strong water absorption, which makes it perishable and stable in size Poor sex. These properties of wood make the service life of wood restricted by many environmental factors, such as humid air, acid rain, etc. The superhydrophobic treatment of wood can endow the wood surface with multiple functions such as waterproof, antifouling, self-cleaning, and antibacterial, which will broaden the application range of wood in production and life, and prolong the servic...

AI Technical Summary

Problems solved by technology

There are many defects in the existing treatment methods: 1. The process is complicated, the production cost is high, and the biotoxicity of the prepared superhydrophobic wood is high; 2. The rough structure constructed is fragile and cannot achieve the effect of lasting superhydrophobic; The superhydrophobic effect can be achieved on the cross-section of the wood, and there is no report to prepare the superhydrophobic effect on the chord section and radial section of the wood; 4. The abrasion resistance of the superhydrophobic wood prepared at present is poor; 5. There are few methods that can Large area construction of superhydrophobic surface

5. The functionality of the prepared superhydrophobic wood is not strong

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