期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 139, 期 37, 页码 -出版社
WILEY
DOI: 10.1002/app.52866
关键词
anticorrosion coating; epoxy resin; hydroxyapatite; physical barrier; triethoxysilane
资金
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University) [PLN201617]
- Scientific and Technological Innovation Team for the Safety of Petroleum Tubular Goods in Southwest Petroleum University [PLN201617]
- [2018CXTD01]
In this study, APTES-HAp nanomaterial was successfully prepared by modifying hydroxyapatite with APTES. The dispersion of APTES-HAp in epoxy resin was greatly improved, leading to significantly improved corrosion resistance of the composite coating. The improvement can be attributed to the effective barrier network formed by APTES-HAp in the epoxy resin and the physical barriers created by layered HAp in the corrosive media.
In this study, HAp(hydroxyapatite) was prepared by hydrothermal method and was successfully modified by APTES (aminopropyltriethoxysilane) to obtain APTES-HAp nanomaterial. Firstly, the microstructure and surface morphology of HAp and APTES-HAp were studied by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscope (SEM), and it was confirmed that HAp and APTES-HAp composites were successfully synthesized. Secondly, SEM analysis is used to study the dispersion of APTES-HAp in epoxy resin, and it is proved that the dispersion of HAp modified by APTES is greatly improved. Finally, the corrosion resistance of the composite coating was studied in detail by electrochemical impedance spectroscopy (EIS). The results show that the APTES-HAp /EP composite coating impedance modulus remains 10(7). The breakpoint frequency (f(b)) is always the minimum after 30 days of immersion, which proves that the corrosion resistance of APTES-HAp /EP composite coating is significantly improved APTES-HAp/EP. The improvement of corrosion resistance is mainly attributed to the following two points: APTES-HAp has good uniform dispersion and interfaces compatibility in epoxy resin, forming an effective barrier network. On the other hand, layered HAp forms physical barriers and maze effects on corrosive media.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据