Research Progress on Improving the Durability of Anti - Corrosive Coatings Based on Micro - Nano Capsule Fillers

WANG Rong, XIAO Song, MA Ji-qin, WANG Sen, LIANG Qian, LEI Lei, LI Wei, CAI Guang-yi, DONG Ze-hua

doi:10.16577/j.issn.1001-1560.2022.0108

Materials Protection >

2022 , Vol. 55 >Issue 4: 145 - 154

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0108

Research Progress on Improving the Durability of Anti - Corrosive Coatings Based on Micro - Nano Capsule Fillers

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1. State Grid Shaanxi Maintenance Company, Xi’an 710000, China;2. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;3. PetroChina Ningxia Petrochemical Company, Yinchuan 750000, China;4. State Grid Shaanxi Electric Power Research Institute, Xi’an 710000, China;5. State Grid Shaanxi Electric Power Company, Xi’an 710000, China; 6. Shaanxi Pilot Power Technology Co., Ltd., Xi’an 710000, China

Received date: 2021-10-15

Revised date: 2021-11-23

Accepted date: 2021-12-21

Online published: 2023-12-28

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Abstract

The integrity and durability of metal coatings have a great influence on the medium corrosion resistance of steel structures. When the anti-corrosive coating was partially damaged or microcracked, the micro-nano capsule filler could produce a stress response to the changes in the micro-environment under the coating, release corrosion-inhibiting substances or polymer monomers, and realize the self-healing of the coating, filling the voids, and thereby significantly improving the medium corrosion resistance of coating. In this work, the principle of micro-nano self-healing coating was introduced firstly. Taking several new micro-nano fillers such as mesoporous SiO2, layered double hydroxide, halloysite nanotubes and metal organic framework compounds as representatives, their application, advantages and disadvantages in self-healing high corrosion resistant coatings were summarized and forecasted briefly, which could provide several ideas for the development of high corrosion resistant and long-lasting coatings.

Key words： self-healing coating; mesoporous SiO₂; layered double hydroxide; halloysite nanotubes; metal organic framework compounds

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WANG Rong, XIAO Song, MA Ji-qin, WANG Sen, LIANG Qian, LEI Lei, LI Wei, CAI Guang-yi, DONG Ze-hua . Research Progress on Improving the Durability of Anti - Corrosive Coatings Based on Micro - Nano Capsule Fillers[J]. Materials Protection, 2022 , 55(4) : 145 -154 . DOI: 10.16577/j.issn.1001-1560.2022.0108

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