| dc.description.abstract | Graphene-related materials have become potential additives in the research of anti-corrosion coatings due to their high chemical and thermal stability, high mechanical properties, and penetration resistance. However, graphene has a limited concentration added to the composite coating due to its high electrical conductivity that promotes galvanic corrosion, therefore the fluorination of graphene has become the best way to improve this issue. However, the traditional preparation method shows the problems such as the use of high toxic precursors, high pollution, and the inability to achieve homogeneous fluorination, so it cannot meet the requirement for current industrial apply applications addition, most of the composite coating methods mentioned in the literature cannot meet the requirements of uniformity, controllable thickness, and complex surface coating that are required by the high-end electronic components, and cannot maximize the extension of the diffusion path of the corrosive medium either. Therefore, the industrial application of anti-corrosion coatings is greatly limited. This study will propose a more environmentally friendly and mass-produced low-energy fluorination method than previous works. Also, the use of the electrophoretic deposition (EPD) method allows for the preparation of composite coating with adjustable thickness, from which the assembled FG flakes are highly aligned among the polymer matrix. In terms of anti-corrosion testing, the coating can still maintain an excellent corrosion rate of only 2.0×10-3 m/year after being immersed in 3.5 wt.% NaCl solution for 30 days. In terms of the heat dissipation performance of the protective coating, the thermal conductivity of the FG composite coating increased by 97% when compared with the pristine polymer. Also, the composite coating exhibit a high electrical resistance, from which the current density of the coating is only 1.32×10-8 A/cm2 when the applied electric field of 28 kV/cm. These results demonstrate the multifunctional properties of our proposed composite coating.
In addition to the corrosion resistance and thermal conductivity of the coating, the preparation method also meets the requirements of large area, uniformity, and controllable thickness. With the preparation conditions of industrial mass production and environmental friendliness, as well as the performance of multifunctional coating properties, this study shows a promising way to improve anti-corrosion protective coatings. | en_US |