Advanced poly(aniline-aminosalicylic acid) nanofiber functionalized with modified GO environment friendly coatings on steel surfaces with water resistance and long-term active anticorrosion performance

IF 2.3 4区 材料科学 Q2 Chemistry
Meng Wang, Fengjuan Xiao, Longfei Kong, Guyu yin, Changbiao Ni, Xuefei Zhang, Cheng Qian, Lu Yan, Mengya Li, Jun Li, Kaixi Zhou
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引用次数: 0

Abstract

An advanced long-term active corrosion protection coating for carbon steel was proposed using poly(aniline-aminosalicylic acid) nanofiber (PACA-f) covalently linked with cetyltrimethyl ammonium bromide (CTAB)-modified graphene oxide (CTGO). The proton-doped PACA-f functionalized CTGO (PACA-f/CTGO) exhibits excellent hydrophobicity and outstanding water resistance in waterborne epoxy polymer (WEP) coatings and better compatibility with WEP due to the formation of organic–inorganic networks. PACA-f/CTGO composite coating has a self-repairing function and shows superior corrosion resistance on Q235 steel. The surface-corrosion inhibition of PACA-f/CTGO on steel was investigated by molecular dynamics simulation(MD) which confirmed the chemical adsorption of the PACA-f/CTGO on the steel surface. The excellent water resistance and anticorrosion property of PACA-f/CTGO are ascribed to the high hydrophobicity of the hybrid coatings, the formation of intelligent passivation layer after the corrosive medium invading, and the barrier performance of CTGO.

具有改性 GO 环境友好涂层功能的先进聚(苯胺-氨基水杨酸)纳米纤维在钢铁表面的耐水性和长期活性防腐性能
利用与十六烷基三甲基溴化铵(CTAB)改性氧化石墨烯(CTGO)共价连接的聚(苯胺-氨基水杨酸)纳米纤维(PACA-f),提出了一种先进的碳钢长期活性腐蚀防护涂层。质子掺杂的 PACA-f 功能化 CTGO(PACA-f/CTGO)在水性环氧聚合物(WEP)涂料中表现出优异的疏水性和出色的耐水性,并且由于形成了有机-无机网络,与 WEP 具有更好的兼容性。PACA-f/CTGO 复合涂料具有自修复功能,在 Q235 钢材上显示出卓越的耐腐蚀性。分子动力学模拟(MD)研究了 PACA-f/CTGO 对钢的表面缓蚀作用,证实了 PACA-f/CTGO 在钢表面的化学吸附作用。PACA-f/CTGO优异的耐水性和防腐性归因于杂化涂层的高疏水性、腐蚀介质侵入后形成的智能钝化层以及CTGO的阻隔性能。
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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