Influence of fluorine incorporation into waterborne acrylic coatings on resulting hydrophobic, thermal stability and drag- reduction properties

IF 1.7 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry Pub Date : 2023-11-01 DOI:10.1016/j.jfluchem.2023.110217

Qingshan Wu , Tianyi Zhao , Mingjie Liu , Guanglong Zhang , Jinwei Zhang , Cunguo Lin , Yichi Chen

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Abstract

Fluorinated polyacrylate copolymers containing various amounts of 1H,1H,2H,2H-perfluorooctyl methacrylate (FA) were synthesized via a miniemulsion polymerization process. The characteristics of latex particles and films were investigated using transmission electron microscopy, dynamic light scattering, attenuated total reflectance Fourier transform infrared spectroscopy, ¹H and ¹⁹F nuclear magnetic resonance spectroscopy, atomic force microscopy, energy dispersive spectroscopy, water contact angle measurements, and thermogravimetric analysis. The results showed that particle size increased almost linearly with FA content, and the surface hydrophobicity of the films increased with FA content up to 14.6 wt% and then plateaued. As the FA content increased, the surface roughness of the films initially increased and then decreased. The thermal stability of fluorinated polyacrylate was significantly enhanced when a high amount of FA was incorporated into the polymer chains. The fluorinated acrylic copolymer coating also exhibited a significant drag reduction effect, with the maximum drag reduction ratio reaching 12% at a water flow velocity of 0.8 m/s.

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氟掺入水性丙烯酸涂料对疏水性、热稳定性和减阻性能的影响

采用微乳液聚合法制备了含不同量1H、1H、2H、2H全氟辛基甲基丙烯酸酯(FA)的氟化聚丙烯酸酯共聚物。采用透射电子显微镜、动态光散射、衰减全反射傅立叶变换红外光谱、1H和19F核磁共振光谱、原子力显微镜、能量色散光谱、水接触角测量和热重分析研究了乳胶颗粒和薄膜的特性。结果表明，膜的粒径随FA含量的增加呈线性增加，膜的表面疏水性随FA含量的增加而增加，达到14.6 wt%后趋于平稳。随着FA含量的增加，膜的表面粗糙度先增大后减小。当大量FA加入到聚合物链中时，氟化聚丙烯酸酯的热稳定性显著增强。氟化丙烯酸共聚物涂层也表现出明显的减阻效果，在0.8 m/s的水流速度下，最大减阻率达到12%。

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来源期刊

Journal of Fluorine Chemistry 化学-无机化学与核化学

CiteScore

3.80

自引率

10.50%

发文量

审稿时长

33 days

期刊介绍： The Journal of Fluorine Chemistry contains reviews, original papers and short communications. The journal covers all aspects of pure and applied research on the chemistry as well as on the applications of fluorine, and of compounds or materials where fluorine exercises significant effects. This can include all chemistry research areas (inorganic, organic, organometallic, macromolecular and physical chemistry) but also includes papers on biological/biochemical related aspects of Fluorine chemistry as well as medicinal, agrochemical and pharmacological research. The Journal of Fluorine Chemistry also publishes environmental and industrial papers dealing with aspects of Fluorine chemistry on energy and material sciences. Preparative and physico-chemical investigations as well as theoretical, structural and mechanistic aspects are covered. The Journal, however, does not accept work of purely routine nature. For reviews and special issues on particular topics of fluorine chemistry or from selected symposia, please contact the Regional Editors for further details.