Lili XUE
,
Likun XU
,
Qingfen LI
材料科学技术（英）
This paper presents the results regarding the effect of nano aluminum powder pigment concentration on the protective properties of waterborne epoxy films in 3.5 wt pct NaCl solution. The anticorrosive performance of the coatings with 0.5, 1, and 3 wt pct pigments and none pigment were investigated using electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and Raman spectroscopy techniques. The results show that adding appropriate amount of nano-aluminium powder pigment can enhance the barrier properties of the epoxy coating, which is attributed to the surface effect of nanoparticles and the compatibility of the pigment with the waterborne epoxy coatings.
关键词:
waterborne epoxy coating
,
纳米铝粉
,
防腐
徐杰
,
闵洁
,
顾广新
,
王振东
,
孙曙元
,
蒋伟洁
涂料工业
水性环氧涂料不仅具有良好的防腐性能,而且符合环保要求,可以用于工程机械涂装.由于水性环氧乳液是一个多相体系,其涂料的固化过程与溶剂型环氧涂料有所区别,特别是环氧固化剂的用量对涂膜的性能有较大影响.本文通过对不同比例的水性环氧乳液和固化剂进行研究,采用红外光谱、涂膜硬度、吸水率、耐中性盐雾试验以及电化学交流阻抗谱进行分析与表征,结果表明m(环氧乳液)∶m(固化剂)=4.5∶1时,涂料的综合性能最优.
关键词:
水性环氧涂料
,
固化剂
,
耐中性盐雾实验
,
电化学阻抗谱
