Rust Conversion Performance of Phosphoric Acid-Gallic Acid in Vinyl Chloride Acrylic Emulsion

doi:10.3390/coatings11020152

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋腐蚀与防护研究发展中心

	Rust Conversion Performance of Phosphoric Acid-Gallic Acid in Vinyl Chloride Acrylic Emulsion
	Wang, Xin 1,2,3,4; Zhu, Qingjun 1,2,3,4; Liu, Xiangju 1,2,3; Hou, Baorong 1,2,3,4
刊名	COATINGS
	2021-02-01
卷号	11 期号:2 页码:14
关键词	rust conversion coating anticorrosion gallic acid acrylic emulsion rust converter
DOI	10.3390/coatings11020152
通讯作者	Zhu, Qingjun(zhuqingjun@qdio.ac.cn) ; Hou, Baorong(baoronghou@163.com)
英文摘要	This work studied the application of phosphoric acid-gallic acid in vinyl chloride acrylic emulsion and its rust conversion performance. The increase of phosphoric acid affected the stability of the system, leading to the rapid precipitation of flocculent precipitation. Rust conversion coating (RCC) showed the best synergistic conversion effect when gallic acid (GA) was 0.2 wt.% and phosphoric acid (PA) was 2 wt.%. XRD and FTIR analysis show that the components of adherent rust (AR) are alpha-FeOOH, gamma-FeOOH and Fe3O4. The conversion products are ferric phosphate (FP) and ferric gallate (FG). The RCC can effectively treat the rusted steel (RS) produced by simulated marine atmospheric corrosion. The corrosion current density was reduced by three orders of magnitude, the adhesion reached 2.75 MPa, and the salt spray corrosion resistance was 20 days. The results of Raman, XPS, SEM and EDS show that the ionic dissolution of iron, complexation and further oxidation reactions occur at the interface between the adherent rust and the RCC. After rust conversion treatment, unreacted rust (UR) affects the further improvement of adhesion strength and anti-corrosion performance.
资助项目	National Natural Science Foundation of China[41827805] ; Shandong Provincial Natural Science Foundation[ZR2020MD080]
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000622364600001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169594]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Zhu, Qingjun; Hou, Baorong
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xin,Zhu, Qingjun,Liu, Xiangju,et al. Rust Conversion Performance of Phosphoric Acid-Gallic Acid in Vinyl Chloride Acrylic Emulsion[J]. COATINGS,2021,11(2):14.
APA	Wang, Xin,Zhu, Qingjun,Liu, Xiangju,&Hou, Baorong.(2021).Rust Conversion Performance of Phosphoric Acid-Gallic Acid in Vinyl Chloride Acrylic Emulsion.COATINGS,11(2),14.
MLA	Wang, Xin,et al."Rust Conversion Performance of Phosphoric Acid-Gallic Acid in Vinyl Chloride Acrylic Emulsion".COATINGS 11.2(2021):14.