CHEMICAL SCIENCE

New progress has been made in the research on anti-corrosion and anti-fouling properties of water-based nano-composite coatings


The synthesis process of two-dimensional nano-hybrid materials with point-sheet structure is provided by the research groupRecently, the latest research results of Duan Jizhou’s research group on the anti-corrosion and anti-fouling properties of water-based nanocomposite coatings were published in the international academic journal “Journal of Chemical Engineering”, which provides new ideas for the research and development of environmentally friendly anti-corrosion and anti-fouling coatings.

According to reports, in the harsh marine environment, long-term corrosion protection is still a huge challenge for the safe service of marine engineering equipment, and anti-corrosion coating is the simplest and most effective way to prevent corrosion. Waterborne coatings make them the focus of a new generation of environmentally friendly anti-corrosion coatings due to the extremely low amount of volatile compounds released. However, its structure is composed of hydrophilic groups and surfactants, and it is easy to form more defects and holes during the curing process, providing more diffusion paths for corrosive electrolytes, resulting in a sharp decline in corrosion protection. In recent years, the widespread use of a range of functional micro-nano materials has reversed the situation of water-based coating defects due to their labyrinth effect and the special intrinsic properties of micro-nano materials. 

Duan Jizhou introduced, the research group found that graphene oxide / zinc oxide quantum dot nano hybrid materials have a unique role in the improvement of anti-corrosion and anti-fouling performance of waterborne epoxy coatings, through the covalent hybridization and functional modification of graphene oxide and zinc oxide quantum dots, a two-dimensional nano-hybrid material with a point-sheet structure was built, which significantly improved the comprehensive mechanical properties of the coating, and achieved the dual role of long-term anti-corrosion and green anti-fouling. This is attributed to the synergy between graphene oxide, zinc oxide quantum dots and amino silanes, and also demonstrates the possibility and importance of nano-hybrids combining the advantages of different nanomaterials in a coating system and discarding the disadvantages. 

The research was funded by the Silk Road Science Foundation project. (Source: China Science Daily, Liao Yang, Wang Min)

Related paper information:https://doi.org/10.1016/j.cej.2022.135765



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