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author:

Yang, Shuo (Yang, Shuo.) [1] | Li, Zhiwen (Li, Zhiwen.) [2] | Zhang, Wenmeng (Zhang, Wenmeng.) [3] | Chen, Dongyang (Chen, Dongyang.) [4]

Indexed by:

EI PKU

Abstract:

Superhydrophobic coatings were prepared by a facilespraying process from a fluorinated poly(aryl ether ketone) (FPAEK) solution containing hydrophobic fumed SiO2 and carbon nanotube (CNT) as inorganicdopants. The FPAEK was polymerized from 4,4'-(hexafluoroisopropylidene)diphenol and 4,4-difluorophenophenone. It has been found that when the doping amounts of SiO2 and CNT are both 1wt%, the water contact angle WCA of the SiO2-CNT/FPAEK coating is 167° and the sliding angle SA is 4°. The glass transition temperature and initial decomposition temperature of the SiO2-CNT/FPAEK coating are 170 and 480, respectively, demonstrating its excellent thermal stability. After immersing in pH=1 of HCl solution, pH=13 of NaOH solution, and 3.5wt% mass fraction of NaCl solution for 13 days, the SiO2-CNT/FPAEK coating maintains its WCA above 150°, demonstrating its excellent chemical stability. After 80 friction testing cycles, the SiO2-CNT/FPAEK coating maintains the WCA at 151°, demonstrating its good mechanical stability. In the electrochemical tests, the corrosion voltage Ecorr of the steel plate is increased from −0.538 V to −0.112 V and the corrosion current Jcorris decreased from 2.105×10−5 A to 1.94×10−7 A after coating with the SiO2-CNT/FPAEK, demonstrating its good anti-corrosion property. Replacing the substrate with iron plate, cement plate, glass plate and polyethyleneplate, the superhydrophobic coatings are also obtained. The dust and other contaminants can be easily removed from the superhydrophobic coatings by the falling water droplets, demonstrating its good self-cleaning property. Therefore, the SiO2-CNT/FPAEK superhydrophobic coating has prospect applications. © 2021, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

Keyword:

Carbon nanotubes Chemical stability Contact angle Corrosion resistant coatings Electrochemical corrosion Electrochemical impedance spectroscopy Glass Glass transition Hydrophobicity Ketones Mechanical stability Silica Silicon Sodium chloride Sodium hydroxide Steel corrosion

Community:

  • [ 1 ] [Yang, Shuo]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350116, China
  • [ 2 ] [Li, Zhiwen]Power China Railway Construction CO. LTD., Beijing; 100044, China
  • [ 3 ] [Zhang, Wenmeng]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350116, China
  • [ 4 ] [Chen, Dongyang]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350116, China

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Source :

Acta Materiae Compositae Sinica

ISSN: 1000-3851

Year: 2021

Issue: 12

Volume: 38

Page: 4004-4013

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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