表面技术2017，Vol.46Issue(11)：1-5,5.DOI:10.16490/j.cnki.issn.1001-3660.2017.11.001
负载植酸钠的壳聚糖微球改性水性涂层制备及防腐蚀性能研究
Preparation and Anti-corrosion Property of Water-based Coatings Modified with Chitosan Microspheres Loaded with Sodium Phytate
摘要
Abstract
The work aims to study the corrosion resistance of the modified coating by adding the mesoporous chitosan mi-crospheres of sodium phytate (load corrosion inhibitor) to the water-based polyacrylate coating. The chitosan microspheres were prepared by W/O emulsion solidification method. The morphology of chitosan microspheres was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The sodium phytate (corrosion inhibitor) was loaded into chitosan microsperes by negative pressure impregnation and the load rate of corrosion in-hibitor was studied by thermogravimetric analysis (TGA). The microsperes of load corrosion inhibitor were added to the wa-ter-based coating with the mass ratio of 5% and the corrosion resistance was studied by electrochemical impedance spectroscopy (EIS). The SEM image showed that the chitosan microspheres were of good spheronization and the size was 20~30μm. The re-sults of FT-IR and XRD showed that the chitosan was crosslinked by vanillin (cross-linking agent) through Schiff base reaction and hydrogen bond interaction, thus leading to the solidification of chitosan microspheres and the low level of crystalline. The TGA results showed that the load rate of sodium phytate was about 25.79%; the EIS results showed that the charge transfer re-sistance of the water-based polyacrylate coating modified by the chitosan microsperes of load corrosion inhibitor had been in-creased. The mesoporous chitosan in the water-based polyacrylate coating controls the release of the sodium phytate, thus im-proving the utilization rate of corrosion inhibitor, and the corrosion resistance of the modified coating is improved.关键词
壳聚糖微球/植酸钠/负载率/水性涂层/改性/阻抗Key words
chitosan microspheres/sodium phytate/load rate/water-based coating/modification/impedance分类
矿业与冶金引用本文复制引用
李伟华,刘晓杰,樊伟杰,王巍..负载植酸钠的壳聚糖微球改性水性涂层制备及防腐蚀性能研究[J].表面技术,2017,46(11):1-5,5.基金项目
国家杰出青年科学基金(51525903) （51525903）
国家自然科学基金项目(51401185) （51401185）
2016南通市应用基础研究-工业创新(GY12016002) Supported by the National Science Fund for Distinguished Young (51525903) （GY12016002）
the National Natural Science Foundation of China (51401185) （51401185）
2016 Applied Basic Research Programs of Nantong(GY12016002) （GY12016002）
