Regarding the problems of high production cost，difficult storage and environmental pollution caused by the high zinc content in waterborne epoxy zinc-rich primer in the waterborne heavy-duty coating system，an improvement method of adding a small amount of graphene material to the coatings to replace part of the zinc powder was adopted. The effects of zinc powder content and graphene addition on the performance of epoxy zinc-rich coatings were investigated by means of potentiodynamic polarization and electrochemical impedance spectroscopy. It was shown that the corrosion resistance of the coatings increased with the increase of zinc powder content and when the content of zinc powder reach 80 wt%， the corrosion rate was 0.00203mm/y. The corrosion rate decreased first and then increased with the increase of graphene material content. When the content of Zn was 20 wt%，with a graphene material content of 0. 6 wt%，the corrosion resistance of the coatings reached the maximum and corrosion rate was 0. 0 038 mm/y.
LIU Jia-Ming
,
HONG Yan
,
TUN Yu-Sheng
,
WANG Xu
. The Study on the Corrosion Resistant Property of Graphene Modified Waterbonre Zinc-Rich Epoxy Coatings[J]. Paint & Coatings Industry, 2020
, 50(1)
: 14
-19
.
DOI: 10.12020/j.issn.0253-4312.2020.1.14
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