颜填料体积浓度对水性环氧导静电防腐蚀涂层性能的影响

Effect of pigment volume concentration on properties of waterborne antistatic anticorrosive epoxy coating

考察了颜填料体积浓度(PVC)对水性环氧导静电防腐蚀涂料涂层导静电性能和防腐蚀性能的影响,运用X射线能谱(EDX)分析了导电填料的元素组成,采用电化学阻抗谱(EIS)、扫描电镜(SEM)等手段对不同颜填料体积浓度的涂层进行了性能测试及表征,根据不同颜填料体积浓度涂层的物理机械性能、盐水浸泡实验结果和电化学阻抗谱分析,确定该水性环氧导静电防腐蚀涂料的最佳颜填料体积浓度为35%。

The effect of pigment volume concentration （PVC） on the antistatic and anticorrosive properties of waterborne antistatic-anticorrosive epoxy coatings was studied. The element components of conductive pigments were-analyzed by X-ray energy dispersive spectrometer （EDX）, and the protective properties and morphology of coatings with different PVCs were characterized by electrochemical impedance spectroscopy （EIS） and scanning electron microscope （SEM） respectively. The optimal PVC of this waterborne antistatic anticorrosive epoxy coating was determined as 35% based on the results of the tests of mechanical, physical and corrosion resisting performance, and the analysis of EIS. The results showed that the corrosion-resisting performance of coatings improved at first with increasing PVC and then decreased after PVC exceeded 35% in the range of PVC from 25%to 45%.