Abstract
A superhydrophobic surface was synthesized by a combination of an epoxy/polymethylphenylsiloxane matrix and dual-scale morphology of silica (SiO2) nanoparticles. When the amount of SiO2 reached 30 wt.%, the as-prepared surface showed a high static water contact angle (WCA) of 154° and a low sliding angle (SA) of 5°, excellent water repellency, and dirt-removal effects both in air and oil (hexamethylene). Even after exposure to as high as a 12.30 Mrad dose of gamma-rays, the composite surface still maintained its superior performance.
Highlights
Nuclear energy is an attractive solution for electricity demand due to its high efficiency and is carbon-neutral [1]
The characteristic absorption peaks at 1429 cm−1 and 1265 cm−1 can be attributed to the methyl group stretching of Si–C6 H5 and Si–CH3, respectively
The overlap of the Si–O–C characteristic peak with the Si–O–Si peak in the region of 1081–1132 cm−1 made it difficult to observe, and the peak became broader after the reaction
Summary
Nuclear energy is an attractive solution for electricity demand due to its high efficiency and is carbon-neutral [1]. Bq was I-137 [5], whereas the Chernobyl accident reached 1.7 × 1018 Bq [6], and the I-137 and Cs-137 leakages during the Fukushima accident were about 1.5 × 1017 and 1.21 × 1016 Bq, respectively [7]. These contaminations would be adsorbed and retained on the surface of the wall and equipment for a very long time [2], and even as secondary pollution carried out with mobile devices like the rescue robot. High energy and high dose radiation usually cause chain-scission and free radical-recombination, which further leads to cracking as well as the apparent degradation of the mechanical strength of the coatings [8,9]
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