2025-09-04 中国科学院（CAS）
Graphical abstract of the development of highly robust superhydrophobic anti-corrosion coating using recycled tire rubber particles. (Image by IOCAS)
＜関連情報＞
- https://english.cas.cn/newsroom/research_news/earth/202509/t20250904_1053932.shtml
- https://www.sciencedirect.com/science/article/abs/pii/S1385894725082737?via%3Dihub
持続的耐食性を有する再生タイヤゴム（RTR）粒子で装甲化された、ゴム製ランニングトラックに着想を得た超頑強な超撥水コーティング Rubber running track inspired ultra-robust superhydrophobic coating armored with recycled tire rubber (RTR) particles for sustained corrosion resistance
Binbin Zhang, Guangzhou Liang, Baorong Hou
Chemical Engineering Journal Available online: 22 August 2025
DOI:https://doi.org/10.1016/j.cej.2025.167434
Highlights
- Triple-layered superhydrophobic coating was constructed inspired by rubber running tracks.
- Recycled tire rubber particles were used to design the armored structure of the coating.
- The coating can withstand 1200 abrasion cycles, 450 tape-peeling cycles, and 1050 g sand impact.
- The |Z|0.01Hz and Rct values increased by seven orders of magnitude compared to bare substrate.
- The coated substrates can withstand 840 h of NaCl immersion and 1680 h of marine atmospheric exposure.
Abstract
The development of mechanically stable superhydrophobic materials with durable corrosion resistance remains a significant challenge in materials science. In this paper, inspired by rubber running tracks, we designed a triple-layered armored superhydrophobic composite coating comprising epoxy resin (EP), recycled tire rubber particles (RTR Ps), fluorosilane-modified aluminum oxide (Al2O3) nanoparticles, and thermoplastic polyurethane elastomers (TPU) spray-coated on Q235 carbon steel. A comprehensive investigation was performed to systematically evaluate the surface wettability, morphological characteristics, chemical composition, self-cleaning capability, mechanical stability, and corrosion resistance properties. The resulting RTR armored superhydrophobic composite coating exhibits exceptional mechanical robustness, withstanding 1200 sandpaper abrasion cycles, 450 tape-peeling cycles, and 1050 g sand impact. Electrochemical measurements reveal seven orders of magnitude increase in low-frequency impedance modulus (|Z|0.01Hz) and charge transfer resistance (Rct) relative to bare Q235 carbon steel, along with five orders of magnitude decrease in corrosion current density (Icorr). Additionally, long-term corrosion resistant testing demonstrated retention of superhydrophobicity after 840 h of 3.5 wt% NaCl immersion and 1680 h of outdoor marine atmospheric exposure. This RTR armored design establishes a new paradigm for sustainable, ultra-durable protective coatings with potential applications in marine infrastructure, transportation, and energy systems.
