Ren Wei, Gao Qiuying, Guo Yujie, Li Changhua, Mao Xiaoyu, Sun Haijiao, He Yi, Bai Yang
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China.
College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China.
Langmuir. 2024 Oct 1;40(39):20679-20691. doi: 10.1021/acs.langmuir.4c02758. Epub 2024 Sep 20.
The introduction of poly(tannic acid) (PTA) and cerium ion [Ce(III)] on the surface of α-zirconium phosphate (α-ZrP) endowed the α-ZrP@PTA-Ce(III)/waterborne epoxy composite coating with enhanced corrosion protection and wear resistance performances. The successful preparation of α-ZrP@PTA-Ce(III) was confirmed through X-ray diffraction, X-ray photoelectron spectroscopy, and Fourier transform infrared spectra. PTA improved the compatibility between α-ZrP@PTA-Ce(III) and the waterborne epoxy resin due to the presence of organic groups from tannic acid. The wear resistance test indicated that the incorporation of α-ZrP@PTA-Ce(III) effectively reduced the coefficient of friction and the wear rate. Electrochemical impedance spectroscopy was used to analyze the corrosion protection performance of unbroken coatings and the self-healing ability of scratched coatings. The incorporation of α-ZrP@PTA-Ce(III) improved the protection performace distinctly. In addition, α-ZrP@PTA-Ce(III) endowed the composite coating with dual corrosion inhibition effects, originating from the PTA film, to prevent the penetration of corrosive media and a dense film that came from the Ce(III) cation. The waterborne epoxy system with enhanced corrosion and wear resistance in this paper broadens the application of α-ZrP.
在α-磷酸锆（α-ZrP）表面引入聚单宁酸（PTA）和铈离子[Ce(III)]，赋予了α-ZrP@PTA-Ce(III)/水性环氧复合涂层增强的防腐和耐磨性能。通过X射线衍射、X射线光电子能谱和傅里叶变换红外光谱证实了α-ZrP@PTA-Ce(III)的成功制备。由于单宁酸中的有机基团的存在，PTA改善了α-ZrP@PTA-Ce(III)与水性环氧树脂之间的相容性。耐磨性测试表明，α-ZrP@PTA-Ce(III)的加入有效降低了摩擦系数和磨损率。采用电化学阻抗谱分析了完整涂层的防腐性能和划痕涂层的自修复能力。α-ZrP@PTA-Ce(III)的加入显著提高了防护性能。此外，α-ZrP@PTA-Ce(III)赋予复合涂层双重缓蚀作用，一种源于PTA膜以防止腐蚀性介质渗透，另一种源于Ce(III)阳离子形成的致密膜。本文中具有增强防腐和耐磨性能的水性环氧体系拓宽了α-ZrP的应用范围。
