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A multifunctional polymer composite coating assisted with pore-forming agent: Preparation, superhydrophobicity and corrosion resistance by Huaiyuan Wang; Daoyuan Di; Yiming Zhao; Ruixia Yuan; Yanji Zhu is a Materials Science article available to read on EtoBox.

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In this paper, a versatile low-cost and simple spraying process was reported for fabricating epoxy resin (EP)/ fluorinated ethylene propylene (FEP)/modified ZnO (m-ZnO) superhydrophobic coating (EP/FEP/m-ZnO). The ZnO nanoparticles were modified by the low surface-energy material of stearic acid, and the pore-forming agent (NH 4 HCO 3 ) was used to build micro/nano-structures. Results showed that the composite coating with 32 wt.% of m-ZnO, 5 wt.% of NH 4 HCO 3 exhibits the optimum superhydrophobicity, with water contact angle (WCA) of 160°a nd sliding angle of 2°. More importantly, the WCA of the as-prepared composite coating still maintains more than 130°under strong acid or 3.5 wt.% NaCl aqueous solution for 270 h immersion, which demonstrates the excellent anti-corrosive performance of EP/FEP/m-ZnO superhydrophobic coating. The WCA of the EP/FEP/m-ZnO coating still kept 136°and only gained weight loss of 1.04% after being rubbed with 300 cycles, and the weight loss of EP/FEP coating is 18.85% under the same condition. All the above aspects are the direct evidences for the highest wear resistance of EP/FEP/m-ZnO superhydrophobic coating. Furthermore, the adhesive ability of the

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Author

Huaiyuan Wang; Daoyuan Di; Yiming Zhao; Ruixia Yuan; Yanji Zhu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0033-0655)

Published

2019

Language

EN

Field

Materials Science (Physical Sciences)