Superhydrophobic supplies supply a method for creating marine anti-corrosion supplies as a consequence of their low solid-liquid contact space and low floor power. Nevertheless, present superhydrophobic anti-corrosion supplies typically undergo from poor mechanical stability and insufficient long-term safety, limiting their sensible utility in real-world environments.
To deal with this problem, a analysis staff led by Prof. Zhang Binbin from the Institute of Oceanology of the Chinese language Academy of Sciences (IOCAS) has developed a superhydrophobic composite coating with mechanical stability and long-term anti-corrosion efficiency by using recycled tire rubber (RTR) particles as an armored skeleton construction. Their findings have been not too long ago printed within the Chemical Engineering Journal.
Impressed by the wear-resistant, weather-resistant, and cushioning properties of multi-layered rubber working tracks, and motivated by considerations over useful resource waste, environmental air pollution, and recycling challenges related to amassed waste rubber tires, the researchers designed a triple-layered superhydrophobic anti-corrosion coating utilizing RTR particles as skeleton construction.
To judge its sturdiness, the researchers subjected the RTR armored superhydrophobic composite coating to 1,200 cycles of sandpaper abrasion, 450 tape-peeling cycles, and 1,050 grams of sand influence. The coating maintained its superhydrophobicity all through these exams.
Moreover, electrochemical impedance spectroscopy (EIS) revealed that the cost switch resistance and low-frequency impedance modulus of the coated Q235 carbon metal substrate elevated by seven orders of magnitude, whereas the corrosion present density decreased by 5 orders of magnitude. The coating confirmed no indicators of failure or corrosion after 840 hours of three.5 wt.% NaCl immersion and 1,680 hours of marine atmospheric publicity, highlighting its long-term anti-corrosion efficiency.
The designed RTR armored superhydrophobic coating not solely allows useful resource recycling but in addition offers a brand new pathway for creating extremely wear-resistant and weather-resistant practical protecting supplies, the researchers famous.
Extra info: Binbin Zhang et al, Rubber working observe impressed ultra-robust superhydrophobic coating armored with recycled tire rubber (RTR) particles for sustained corrosion resistance, Chemical Engineering Journal (2025). DOI: 10.1016/j.cej.2025.167434