无机富锌漆中锌粉形状对涂层重防腐蚀性能的影响

发布时间：2018-10-17 10:48

【摘要】：为了进一步研究无机富锌底漆中锌粉形状对涂层及其复合涂层防腐蚀性能的影响,分别选用球状和片状锌粉制备了无机富锌底漆,并与H702环氧云铁中间漆、H703灰环氧面漆一起构成了重防腐蚀复合涂层体系。通过盐雾腐蚀和电化学交流阻抗谱技术研究了无机富锌底漆涂层及其复合涂层的防腐蚀性能。结果表明:片状无机富锌底漆涂层的耐蚀性能更强,经过长时间的盐雾腐蚀没有出现明显的腐蚀产物;复合涂层交流阻抗谱的Bode中低频阻抗模值在较长时间内稳定在107Ω·cm2左右,Nyquist谱中的容抗弧半径明显增大,片状复合涂层的防腐蚀性能优于球状复合底漆涂层。
[Abstract]:In order to further study the effect of zinc powder shape in inorganic zinc rich primer on the corrosion resistance of the coating and its composite coating, the inorganic zinc rich primer was prepared by using spherical and flake zinc powder, respectively. With H702 epoxy iron intermediate paint and H703 grey epoxy topcoat, a heavy corrosion resistant composite coating system was formed. The corrosion resistance of inorganic zinc rich primer coating and its composite coating were studied by salt spray corrosion and electrochemical impedance spectroscopy. The results showed that the corrosion resistance of flake inorganic zinc-rich primer coating was stronger and no obvious corrosion product appeared after long time salt spray corrosion. The low and medium frequency impedance modulus of Bode of composite coating is about 107 惟 cm2 in a long time, the arc radius of Nyquist spectrum increases obviously, and the corrosion resistance of flake composite coating is better than that of spherical composite primer coating.
【作者单位】： 武汉大学物理科学与技术学院;
【基金】：国家自然科学基金项目(21174108)资助
【分类号】：TG174.45

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