highly durable superhydrophobicity by tunning coating preparation process

In various industries, hydrophobic and superhydrophobic surfaces have been exploited in special applications such as self-cleaning, anti-fouling, and anti-icing. along with the initial superhydrophobicity, its durability is another challenging issue that addresses maintaining hydrophobicity behavior during practical utilization. this study presents a cost-effective route that can be easily scaled up to develop a superhydrophobic coating through the sol-gel method with silane precursors. tetraethyl orthosilicate (teos) methyltriethoxysilane (mtes) as coating matrix, triethoxyoctylsilane as a hydrophobic agent, and silica nanoparticles to induce desired roughness were utilized. the coating was fabricated by cyclic spraying of prepared sols (acidic and basic). the combination of low surface energy material (chemistry) and appropriate roughness (topology) led to superhydrophobicity. the chemical composition and elemental analysis of coating were carried out by fourier transform infrared and energy dispersive x-ray spectroscopy, respectively. a coating with a water contact angle (wca) of 160 and near-zero sliding angle and outstanding weathering stability was successfully achieved. it was approved by sustained superhydrophobicity after 2000h accelerated uv aging test exposed to cyclic uv and humidity conditions at relatively high temperatures. scanning electron microscopy (sem) demonstrated the essentiality of dual roughness (micro-nano) in achieving superhydrophobicity.

Highly Durable Superhydrophobicity by Tunning Coating Preparation Process

In various industries, hydrophobic and superhydrophobic surfaces have been exploited in special applications such as self-cleaning, anti-fouling, and anti-icing. Along with the initial superhydrophobicity, its durability is another challenging issue that addresses maintaining hydrophobicity behavior during practical utilization. This study presents a cost-effective route that can be easily scaled up to develop a superhydrophobic coating through the sol-gel method with silane precursors. Tetraethyl orthosilicate (TEOS) Methyltriethoxysilane (MTES) as coating matrix, Triethoxyoctylsilane as a hydrophobic agent, and silica nanoparticles to induce desired roughness were utilized. The coating was fabricated by cyclic spraying of prepared sols (acidic and basic). The combination of low surface energy material (chemistry) and appropriate roughness (topology) led to superhydrophobicity. The chemical composition and elemental analysis of coating were carried out by Fourier transform infrared and energy dispersive X-ray spectroscopy, respectively. A coating with a water contact angle (WCA) of 160 and near-zero sliding angle and outstanding weathering stability was successfully achieved. It was approved by sustained superhydrophobicity after 2000h accelerated UV aging test exposed to cyclic UV and humidity conditions at relatively high temperatures. Scanning electron microscopy (SEM) demonstrated the essentiality of dual roughness (micro-nano) in achieving superhydrophobicity.