Preparation of BTA@HMCs/PANI Microcapsules and Corrosion Resistance of Epoxy Coatings

被引：0
|
作者：
Zhang B. [1 ]
Li X. [1 ]
Shi N. [1 ]
Zhou R. [1 ]
Jin J. [1 ]
Li H. [1 ]
机构：
[1] Provincial Key Laboratory of Polyolefin New Materials, School of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2024年 / 40卷 / 04期
关键词：
corrosion resistance; hollow mesoporous carbon spheres; microcapsules; self-healing coating;
D O I：
10.16865/j.cnki.1000-7555.2024.0077
中图分类号：
学科分类号：
摘要：
Hollow mesoporous carbon spheres (HMCs) synthesized by hard template method was used as microcontainers. BTA@HMCs/PANI microcapsules loaded with corrosion inhibitor benzotriazole (BTA) were successfully prepared by vacuum impregnation and in- situ polymerization. The prepared microcapsules were spherical with an average particle size of about 270 nm, a wall thickness of (50±10) nm, and a core content of 31.0% . The self- healing epoxy coating with 5% BTA @ HMCs/PANI microcapsules has the best corrosion resistance. The salt water immersion experiment shows that the epoxy composite coating has no obvious corrosion phenomenon after 30 d of immersion, and the EIS electrochemical impedance experiment shows that the impedance modulus of the epoxy composite coating in the low frequency region is 2~3 orders of magnitude higher than that of the pure epoxy coating. At the same time, the synergistic anti-corrosion mechanism of microcapsule core material corrosion inhibitor BTA and microcapsule wall material PANI was revealed. © 2024 Sichuan University. All rights reserved.
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页码：50 / 60
页数：10
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