EDTA interfacial chelation Ca^(2+) incorporates superhydrophobic coating for scaling inhibition of CaCO_(3) in petroleum industry  

作　　者：Ming-Liang Zhu Hui-Juan Qian Rui-Xia Yuan Dong-Yan Zhao Hai-Chao Huang Huai-Yuan Wang 

机构地区：[1]College of Chemistry and Chemical Engineering,Northeast Petroleum University,Daqing 163318,China [2]College of Chemical Engineering,Daqing Normal University,Daqing 163712,China [3]Beijing Smart-Chip Microelectronics Technology Co.,Ltd,Beijing 102200,China

出　　处：《Petroleum Science》2021年第3期951-961,共11页石油科学（英文版）

基　　金：The research was fnancially supported by the National Science Foundation for Distinguished Young Scholars of China(Grant No.51925403);the Major Research Plan of National Natural Science Foundation of China(Grant No.91934302);the National Science Foundation of China(21676052,21606042).

摘　　要：In this paper,the superhydrophobic poly(vinylidene fuoride)/fuorinated ethylene propylene/SiO_(2)/CNTs-EDTA(PFSCEDTA)composite coating was successfully fabricated and applied for anti-scaling performance.The deposition of CaCO_(3) on the surface of the superhydrophobic PFSC-EDTA composite coating reached 0.0444 mg/cm^(2) for 192-h immersion into the supersaturated CaCO_(3) solution,which was only 11.4%that of the superhydrophobic PFSC composite coating.At the interface between the CaCO_(3) solution and the PFSC-EDTA coating,the Ca^(2+)could be frstly chelated by EDTA that was beneft for improving the anti-scaling performance of the superhydrophobic PFSC-EDTA composite coating.In another hand,the addition of EDTA to the CNTs played an important role in fabricating the SiO_(2)-centric and CNTs-EDTA-surrounded multilevel micro-nanostructure in the superhydrophobic PFSC-EDTA composite coating,in favor of maintaining the air flm under the water and the stability of the superhydrophobic surface.The research supplies a new way of improving antiscaling performance of superhydrophobic coating by incorporating the organic chelating agent at the interface and changing the traditional way of scale prevention.

关 键 词：ANTI-SCALING Superhydrophobic coating EDTA Poly(vinylidene fuoride) Carbon nanotubes 

分 类 号：TE39[石油与天然气工程—油气田开发工程]