JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 40 Issue 4
August 2025
Article Contents
ZHANG Hongzhong, LIU Zhenxing, HU Wanda, et al. Preparation and performance evaluation of anti-corrosion coatings for natural alkali brine collection pipelines[J]. Journal of Light Industry, 2025, 40(4): 108-114. doi: 10.12187/2025.04.012
Citation: ZHANG Hongzhong, LIU Zhenxing, HU Wanda, et al. Preparation and performance evaluation of anti-corrosion coatings for natural alkali brine collection pipelines[J]. Journal of Light Industry, 2025, 40(4): 108-114. doi: 10.12187/2025.04.012 shu

Preparation and performance evaluation of anti-corrosion coatings for natural alkali brine collection pipelines

  • Received Date: 2024-06-21
    Accepted Date: 2024-07-25
  • To address corrosion issues in natural alkali brine collection pipelines, a composite anti-corrosion coating (EP+PDMS@SiO2) was prepared based on epoxy resin (EP) and polydimethylsiloxane (PDMS) as matrix materials, incorporated with octadecyltrichlorosilane (OTS)-modified nano-silica (n-SiO2) particles as fillers. The corrosion resistance of the coating was characterized via Tafel polarization analysis, electrochemical impedance spectroscopy (EIS), and mass loss method. Results indicated that the dosages of n-SiO2 particles and OTS (used as modifier) were critical factors influencing the corrosion resistance of EP+PDMS@SiO2 coatings, with optimal values of 2.1 g (for n-SiO2) and 0.5~1.0 mL (for OTS), respectively. When coated onto N80 steel coupons, the optimized EP+PDMS@SiO2 coating reduced the self-corrosion current and elevated the charge transfer resistance by three orders of magnitude, respectively. The corrosion rate decreased from 2.004 4% to 0.029 2%. These results demonstrate that the OTS-modified n-SiO2-reinforced anti-corrosion coating (EP+PDMS@SiO2) effectively inhibits corrosion in natural alkali brine collection pipelines.
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