We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
改性氟化石墨烯增强氟树脂防腐蚀涂层的制备及性能.
- Authors
李勃杭; 许凯欣; 孙文; 王立达; 杨政清; 刘贵昌
- Abstract
Fluorographene (FG) and oxidized fluorographene (OFG) were prepared from fluorinated graphite (FGi) respectively by intercalation method and modified Hummers method. OFG was then grafted with aminopropyltriethoxysilane (KH500), forming a KH500-modified OFG (coded as KH550-OFG). The morphology and microstructure of the modified fluorographene were characterized by atomic force microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. A fluororesin (PFA)-based composite coating (coded as P-OFG) was obtained using the KH550-OFG as anticorrosive filler. The corrosion resistance of P-OFG composite coating was studied by electrochemical impedance spectroscopy (EIS), air tightness test, and neutral salt spray test. The results showed that the dispersibility of FG in fluororesin could be improved by surface treatment and grafting, effectively extending the penetration path of corrosive medium in coating matrix and enhancing the anticorrosion performance of coating. The P-OFG composite coating featured better air tightness than PFA coating, and showed good corrosion resistance after being immersed in 1% (mass fraction) sulfate acid solution within 60 days.
- Subjects
SALT spray testing; SURFACE preparation; GRAPHITE fluorides; CORROSION resistance; INFRARED spectroscopy; COMPOSITE coating
- Publication
Electroplating & Finishing, 2022, Vol 41, Issue 12, p868
- ISSN
1004-227X
- Publication type
Article
- DOI
10.19289/j.1004-227x.2022.12.008