Anticorrosive–Radiative Cooling Integrated Coating for Oil Storage Tanks

Oil storage tanks face critical challenges of high-temperature-induced volatile loss and corrosionfailure, which restrict operational safety and economic efficiency. To address these issues, this studydevelops a water-based anticorrosive–radiative cooling integrated coating. The coating achievespassive cooling via solar heat reflection and radiative heat dissipation, while integrating anti-corrosionfunctionality to form a comprehensive protection system. Systematic optimization of key parameterswas conducted: barium sulfate (BaSO₄) and magnesium fluoride (MgF₂) were selected as compositereflective fillers for their complementary spectral reflectivity; the optimal formulation was determinedas a BaSO₄:MgF₂ volume ratio of 2:1, 70% pigment volume concentration (PVC), and a 150 μm coatingthickness. Experimental results show that the optimized coating exhibits a solar reflectivity of up to92.82% with stable infrared emissivity, effectively reducing tank temperature and minimizing “breathingloss” and volatile emissions. Electrochemical tests confirm that the double-layer system (epoxy–siliconeanticorrosive primer and radiative cooling topcoat) maintains low-frequency impedance above 2.0 × 10⁹Ω after 68 days of immersion, demonstrating superior long-term corrosion resistance. As a water-borne,energy-saving, and environmentally friendly solution, the coating aligns with the “Double Carbon”goals, extends tank service life, reduces maintenance costs, and provides a sustainable protectionstrategy for the aviation energy storage industry, with broad application prospects in green industrialinfrastructure.