Effects of POSS modified graphene oxide in anti-corrosion and hydrophobic properties of coatings

被引：0
|
作者：
Zhao L. [1 ]
Tang E. [1 ]
Xing X. [1 ]
Liu S. [1 ]
Chu X. [1 ]
Hu N. [1 ]
Zhang Z. [1 ]
机构：
[1] College of Chemical & Pharmaceutical Engineering, Hebei University of Science &Technology, Hebei, Shijiazhuang
来源：
Huagong Xuebao/CIESC Journal | 2024年 / 75卷 / 05期
关键词：
corrosion; graphene oxide; nanomaterials; surface;
D O I：
10.11949/0438-1157.20240196
中图分类号：
学科分类号：
摘要：
The cage sesquisiloxane (POSS) of organic-inorganic hybrid material was prepared by self-hydrolytic condensation of organosilicon compound γ -aminopropyl triethoxysilane (APTES), and then it was grafted onto graphene oxide (GO) to overcome aggregation of GO. The grafting rate was determined to be 98.3% by Boehm titration, and further loaded with zinc ions to prepare composite nanoparticles POSS/GO/Zn. The structure and microstructure of POSS/GO/Zn were characterized with FT-IR, XRD, Raman, NMR, and SEM, and applied to waterborne epoxy resin (WEP) coating materials. The electrochemical impedance spectroscopy (ESI) and water contact angle results showed that the composite coating of the obtained nanoparticles presented the excellent anti-corrosion and hydrophobic properties. The impedance value of POSS/GO/Zn/WEP after being soaked in 3.5% sodium chloride solution for 40 days was 8.33×105 Ω·cm2, which was greater than the initial value of 1.46×105 Ω·cm2 on the first day of immersion of the blank epoxy coating. The water contact angle increased from 48.42° to 98.11°, and the property of coating changed from hydrophilic to hydrophobic,indicating that the POSS/GO/Zn has good potential for application in coatings. © 2024 Materials China. All rights reserved.
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页码：1977 / 1986
页数：9
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