Abstract
In this study, the superhydrophobic composite coatings for self-cleaning were fabricated by mixing fluorine resin and two kinds of nanoparticles of carbon nanotubes (CNTs) and SiO2. When the mass ratio of CNTs to SiO2 is 2:3 and the added amount of nanoparticles is 75 wt. %, the superhydrophobic composite coatings with a water contact angle of 156.8° show the best self-cleaning property and 3.6° of contact angle hysteresis. Furthermore, the superhydrophobic composite coatings demonstrate good properties such as chemical resistance, thermal stability, and mechanical stability. The superhydrophobic composite coatings could be used for oil/water separation and could be applied to various substrate surfaces such as glass plates, cloth, board, steel plate, PVC plate, and so on. The superhydrophobic composite coatings show practical value in many fields because of their low cost and large area preparation.
Highlights
Due to their wide applications in self-cleaning, oil/water separation, corrosion resistance, anti-icing, anti-fogging, and anti-bacterial, superhydrophobic surfaces have attracted much attention over the last ten years [1,2,3,4]
We propose a facile way to prepare superhydrophobic composite coatings by integrating carbon nanotubes (CNTs)/SiO2 nano-additives on fluorine resin in this study
When the total mass of the nanoparticles accounted for 75% of the coatings and the mass ratio of CNTs to SiO2 was 2:3, the superhydrophobic composite coatings with a water contact angle (WCA) of 156.8◦ and contact angle hysteresis of 3.6◦ were fabricated through mixing fluorine resin and two kinds of nanoparticles of CNTs and SiO2
Summary
Due to their wide applications in self-cleaning, oil/water separation, corrosion resistance, anti-icing, anti-fogging, and anti-bacterial, superhydrophobic surfaces have attracted much attention over the last ten years [1,2,3,4]. Many ways have been reported to fabricate superhydrophobic surfaces in recent years, such as chemical vapor deposition [7,8], plasma etching [9,10], hydrothermal synthesis [11,12], electrospinning [13,14], dip coating [15,16], sol-gel method [17,18], templating [19,20], and so on. There are many ways to prepare superhydrophobic surfaces, but most methods usually involve specialized equipment or multistep procedures, high cost, inconvenience, and the inability to fabricate a large area of superhydrophobic surfaces, which limits their practical uses. Low cost, and suitable for large area preparation of superhydrophobic surfaces is the goal of scientific researchers in this field.
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