One-step synthesis of unique silica particles for the fabrication of bionic and stably superhydrophobic coatings on wood surface

Dimensional Stabilization of Wood

“…The result was wood with superhydrophobic properties, a water contact angle reaching 153°and a sliding angle less than 5°. It was also reported that these coatings show resistance to pure water, corrosive water, and some organic solvents [18]. A superhydrophobic film on a wood surface, with a water contact angle of 164°and sliding angle of less than 3°, was achieved using the combination of silica nanoparticles, which have a high surface roughness, and a low surface free energy film of perfluoroalkyltriethoxysilanes (POTS).…”

“…Good surface coatings sufficiently retard the rate of moisture absorption, which minimizes the s t e e p n e s s o f m o i s t u r e g r a d i e n t s i n t h e w o o d . Superhydrophobic surfaces, with water contact angles larger than 150°and sliding angles less than 10°, have many attractive characteristics, such as water repellency, lubricity, selfcleaning, antifouling, and others [18]. A low surface energy coating on a surface with a high surface roughness can create a superhydrophobic surface.…”

“…A low surface energy coating on a surface with a high surface roughness can create a superhydrophobic surface. Extensive studies have been conducted to develop superhydrophobic surfaces on solid wood substrates [17][18][19][20][21][22][23][24]. Many methods have been developed to produce superhydrophobic surfaces on wood substrates, such as the sol-gel process [20], chemical methods [17,23], and deposition methods [22].…”

Fabrication of superhydrophobic bamboo timber based on an anatase TiO2 film for acid rain protection and flame retardancy

“…have a lower intensity indicating that the hydrophilic OH groups are consumed by the OTS coating 28 . The spectra of superhydrophobic surface exhibited the adsorption peaks at about 2918 cm -1 and 2851 cm -1 , which were attributed to C-H asymmetric and symmetric stretching vibrations, respectively 22 .…”

A simple, one-step hydrothermal approach to durable and robust superparamagnetic, superhydrophobic and electromagnetic wave-absorbing wood

“…Often, clouding, discolouring and checking defects in wood are caused by the hydrophilicity of the wood surface. Therefore, to overcome the wood’s defects and prolong the wood’s service life, the preparation of superhydrophobic wood is necessary2324. In general, a superhydrophobic wood surface can be prepared by two approaches: forming a layer of inorganic particles on the wood surface to create a rough structure or chemically modifying a rough surface with a low surface free energy (such as FAS-17)2526.…”