期刊
APPLIED SURFACE SCIENCE
卷 578, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.151980
关键词
CaCO3; Intelligent coating; Long-term corrosion protection; Environmentally friendly
类别
资金
- National Natural Science Foundation of China [21673130, 21603122]
- Natural Science Foundation of Shandong Province [ZR2020QE027]
By incorporating BTA-CaCO3@TA microspheres into waterborne epoxy resin coatings, an eco-friendly and long-term pH-responsive intelligent anti-corrosion coating was developed, showing excellent long-term corrosion protection performance.
The aim of this work is to develop an eco-friendly pH-responsive intelligent coating with long-term corrosion protection by a convenient method. Herein, an eco-friendly and long-term pH-responsive intelligent anti-corrosion coating (BTA-CaCO3@TA coating) is fabricated through the addition of a hydrophilic pH-responsive release material (BTA-CaCO3@TA microspheres) into a waterborne epoxy resin coating. The electrochemical impedance spectroscopy results indicated that BTA-CaCO3@TA microspheres could endow the coating with long-term corrosion protection. The vertical bar Z vertical bar(f=0.01Hz) values of the BTA-CaCO3@TA coating after 130 days of immersion were still higher than those of the pure waterborne epoxy resin coating at the beginning of immersion. The excellent long-term protection performance was related to the good dispersibility of BTA-CaCO3@TA micro spheres in the waterborne coatings, the TA conversion film and the BTA inhibitor protection film, which formed on the steel surface in situ. This synergistic strategy demonstrated its future application for protecting metals from corrosion.
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