Improved weathering performance and wettability of wood protected by CeO₂ coating deposited onto the surface

Abstract

Wood in outdoor exposure undergoes photo chemical degradation mainly caused by the combination of UV radiation and moisture, thus appropriate coatings are desirable. In this paper, the wood surface was first treated with CeO 2 sol and then treated with a layer of octa decyltrichlorosilane (OTS) and the created coating was characterized by field emission scanning electron micro scopy (FESEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDXA), Xray diffraction (XRD), and FTIR spectroscopy (FTIR). The surface became superhydrophobic as the contact angle (CA) for water of the modified wood was 152°. Accelerated aging tests revealed that the modified wood has an excellent weath ering resistance.

Mechanical stability of superhydrophobic epoxy/silica coating for better water resistance of wood

“…The superhydrophobic surfaces with water contact angle (CA) higher than 150° and sliding angle < 10° have attracted considerable attention because they are not only water repellent but are also easy to clean and have antifouling characteristics (Chapman et al 2009;Chunder et al 2009;Dorrer and Ruhe 2009;Fu et al 2012;She et al 2013;Wang et al 2013Wang et al , 2014Zhang et al 2013;Lu et al 2014). Best known are the natural superhydrophobic species such as lotus leaves, rose petals, butterfly's wing, and water strider's legs (Sun et al 2005;Feng et al 2008).…”

“…To this purpose, a number of synthetic strategies have been reported, including sol-gel processing (Su et al 2011;Liu et al 2014), anodic oxidation (Wu et al 2009), and electrodeposition (Yu et al 2013). Various materials have been tested, including polymers (Hurst et al 2012;Zhou et al 2012), metals (Rao et al 2011;Feng et al 2012), oxides Fu et al 2012;Lu et al 2014;Wang et al 2014), fabric , and composites (Wang et al 2011a). The silica nanoparticles modified with long-chain alkylsilane are also useful for increasing hydrophobicity .…”

UV-protection of wood surfaces by controlled morphology fine-tuning of ZnO nanostructures

“…Nowadays, there is an increasing attention dedicated to wood modification with inorganic components (Sun et al 2010;Mahr et al 2013;Lu et al 2014). For example, SiO 2 nanoparticles with hydrolyzed hexadecyltrimethoxysilane or Al(OH) 3 micro/nanospheres were applied to make wood surface hydrophobic (Wang et al 2013) or fire resistance (Wang et al 2014).…”

Silver mirror reaction as an approach to construct a durable, robust superhydrophobic surface of bamboo timber with high conductivity

“…Recently, a number of methods such as sol-gel process [15], chemical vapor deposition [10], phase separation [16], electrospinning [17], solution immersion process [18], layer-by-layer assembly [19], etc., used to synthesize artificial superhydrophobic surfaces by mimicking the surface of lotus leaves had been reported. Up to now, a lot of researches referring to superhydrophobic surfaces had already appeared, but these superhydrophobic surfaces were mainly fabricated on these substrates including silicon wafer, glass, zinc, copper, graphene, steel, wood, paper, and textile [13,17,[20][21][22][23][24][25][26]. To the best of our knowledge, there are few reports on the production of superhydrophobic surface on the bamboo timber.…”