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针对氟碳漆/CNTs防腐导电涂层固化过程中容易产生沉淀、易引起导电性下降的问题,采用目测法、傅里叶变换红外光谱(FTIR)、体积电阻率、极化曲线和电化学阻抗谱等研究了固化温度对涂层的表面性能、交联度、导电性、耐蚀性能的影响。结果表明:固化温度较低时,涂层的表面光泽度好,黏结性能较好。固化温度大于90℃后,涂层黏结性、耐蚀性以及电导率下降。当固化温度为60℃时,涂层的交联度最高,综合性能最佳,其表面光泽度可以达到1级,铅笔硬度为3H,涂层的体积电阻率为5.28×10-3Ω·m,腐蚀速率为1.2×10-6 mm/a。
Aiming at the problems that the precipitation of fluorocarbon coating / CNTs anticorrosive conductive coating tends to occur during the curing process, the electroconductivity tends to decrease. Visual methods, Fourier transform infrared spectroscopy (FTIR), volume resistivity, polarization curve and electrochemical impedance Spectrum and other studies of the curing temperature on the coating surface properties, degree of crosslinking, conductivity, corrosion resistance. The results show that when the curing temperature is low, the surface gloss of the coating is good and the bonding performance is better. Curing temperature greater than 90 ℃, the coating adhesion, corrosion resistance and electrical conductivity decreased. When the curing temperature is 60 ℃, the coating has the highest degree of cross-linking, the best overall performance, the surface gloss can reach level 1, the pencil hardness is 3H, the volume resistivity of the coating is 5.28 × 10-3Ω · m, The corrosion rate is 1.2 × 10-6 mm / a.