Abstract
Abstract Corrosion and icing are common problems in aerospace and wind power fields. In order to improve the thermal and hydrophobic properties of epoxy-based anticorrosive coatings and expand the application in various working environments, the modified graphene oxide (GO) was introduced into the epoxy-based anticorrosive coatings to prepare GO/polyvinyl butyral/epoxy resin nanocomposite coatings. The preparation process of nanocomposite coating was optimized by response surface method. Through heat transfer experiment and contact angle experiment, the fitting model of influence factors and response values were established, and the response surface was optimized with heating rate and contact angle as response value. It is reported that the heating rate of the optimum parameter is 0.218°C/s, and the contact angle is 85.757°. The maximum error of the optimized response values verified by the coating experiment is 8.58%, which indicates that the reliability of the RSM optimization result is high. The optimization results of the preparation process parameters can meet the requirements of the nanocomposite coatings with high thermal and hydrophobic properties.
Highlights
Metal materials will be accelerated to be corroded in the material environment with salt, acid, and alkali
The heat transfer characteristics and surface hydrophobicity of graphene oxide (GO)/Polyvinyl butyral (PVB)/Epoxy resin (EP) nanocomposite coatings prepared under different preparation conditions were analyzed, and the main influence factors in the preparation process were determined
The heat transfer performance of GO/PVB/EP nanocomposite coatings prepared by different processes was obtained by heat transfer experiments
Summary
Metal materials will be accelerated to be corroded in the material environment with salt, acid, and alkali. The main way to solve the above problem is to prepare epoxy coating matrix composites with high anti-corrosion and barrier properties by doping nanocomposite fillers [5]. The anti-/deicing performance of the coating was seldom considered in the past works, and the thermal conductivity and hydrophobicity of graphene-doped epoxy coating were rarely reported. In order to prepare epoxy coating with good anti-/deicing performance, it is necessary to comprehensively consider the thermal conductivity and hydrophobicity. The heat transfer characteristics and surface hydrophobicity of GO/PVB/EP nanocomposite coatings prepared under different preparation conditions were analyzed, and the main influence factors in the preparation process were determined. According to the reasonable range of each variable, the response surface analysis factor level is determined as shown in Table 1, and the experimental data and optimization results are shown in Table 2 (Section 3.2 for details)
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