利用交流阻抗技术研究超细TiO2改性环氧防腐涂料性能。结果表明，在3.5%NaCl溶液中，超细TiO2改性环氧防腐涂料的交流阻抗谱为单容抗半圆弧，其等效电路为极化电阻和涂层电容并联的结构。且经过半年的浸泡，超细TiO2改性环氧防腐涂料的极化电阻仍然大于108Ω.cm2、涂层电容小于10-10F/cm2，吸水率仅为0.12，表明涂层具有优良的耐蚀性和耐水性。
In the present paper, EIS was used to study ultra-fine TiO2 modified epoxy anti-corrosion coating. Experimental results show that the Nyquist plot of ultra-fine TiO2 modified epoxy anti-corrosion coating is a single capacitive loop, and its equivalent circuit is parallel connection of polarization resistance and coating capacitance. After half year, immersion in 3.5% NaCl solution, the polarization resistance keeps higher than 108Ω.cm2, coating capacitance lower than 10-10F/cm2 and water absorption is 0.12.These show that the ultra-fine TiO2 modified epoxy anti-corrosion coating has excellent anti-corrosion performance and anti-water performance.
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