<strong>CeO<sub>2</sub>-GO/EP</strong>防腐复合涂层的制备和性能

doi:10.11901/1005.3093.2024.227

材料研究学报

2025, Vol. 39

Issue (4): 259-271 DOI: 10.11901/1005.3093.2024.227

研究论文

本期目录 | 过刊浏览

CeO₂-GO/EP防腐复合涂层的制备和性能

彭怡和¹, 欧宝立¹^,²^,³(

), 彭勇洁¹, 温乜一¹, 程天宇¹, 陈迪名¹

^1.湖南科技大学材料科学与工程学院湘潭 411201
^2.中国科学院兰州化学物理研究所固体润滑国家重点实验室兰州 73000
^3.清华大学高端装备界面科学与技术全国重点实验室北京 100084

Preparation and Properties of Cerium Dioxide-Graphene Oxide Hybrid Materials (CeO₂-GO)/Epoxy Resin Anti-corrosive Composite Coating

PENG Yihe¹, OU Baoli¹^,²^,³(

), PENG Yongjie¹, WEN Mieyi¹, CHENG Tianyu¹, CHEN Diming¹

^1.School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
^2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
^3.State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China

引用本文:

彭怡和, 欧宝立, 彭勇洁, 温乜一, 程天宇, 陈迪名. CeO₂-GO/EP防腐复合涂层的制备和性能[J]. 材料研究学报, 2025, 39(4): 259-271.
Yihe PENG, Baoli OU, Yongjie PENG, Mieyi WEN, Tianyu CHENG, Diming CHEN. Preparation and Properties of Cerium Dioxide-Graphene Oxide Hybrid Materials (CeO₂-GO)/Epoxy Resin Anti-corrosive Composite Coating[J]. Chinese Journal of Materials Research, 2025, 39(4): 259-271.

全文: PDF(15763 KB) HTML

摘要:

用3-氨丙基三乙氧基硅烷和3-缩水甘油醚氧丙基三甲氧基硅烷分别对氧化石墨烯(GO)和二氧化铈(CeO₂)纳米粒子表面进行共价化学修饰，氨基与环氧基之间的开环反应将CeO₂纳米粒子锚定在GO的表面得到CeO₂-GO杂化材料，将其引入环氧树脂基体中制备出CeO₂-GO杂化材料/环氧树脂防腐复合涂层(CeO₂-GO/EP)防腐复合涂层。使用FT-IR、XPS和SEM等手段对其表征。结果表明，CeO₂-GO杂化材料均匀分散在环氧树脂基体中。CeO₂-GO/EP涂层的吸水率和摩擦系数明显比纯环氧树脂涂层的低。1.0% CeO₂-GO/EP (质量分数)具有较低的腐蚀电流密度(I_corr)值(8.42 × 10^-13 A·cm^-2)和较高的腐蚀电位(E_corr)值(-65 mV)。在3.5%NaCl (质量分数)溶液中浸泡60 d后的CeO₂-GO/EP涂层样品，其阻抗|Z|_{0.01 Hz}值为7.41 × 10⁹ Ω·cm²，是纯环氧树脂涂层|Z|_{0.01 Hz}值(6.56 × 10⁶ Ω·cm²)的1000倍。主动和被动双重防腐机制使CeO₂-GO/EP涂层具有长效防腐性能。

关键词 ：材料表面与界面, CeO₂, 氧化石墨烯, 环氧树脂, 防腐涂层

Abstract：

In order to fabricate epoxy resin composite coating with superior long-term anti-corrosive properties, graphene oxide (GO) and cerium dioxide (CeO₂) nanoparticles were covalently modified with (3-Aminopropyl) triethoxysilane and 3-Glycidyloxypropyltrimethoxysilane, respectively. Subsequently, CeO₂ nanoparticles were anchored on the surface of GO through the reaction between -NH₂ and -C-O-C-, obtaining CeO₂-GO hybrid materials. Afterwards, the composite coating (CeO₂-GO)/EP was prepared via incorporating the prepared hybrid material with epoxy resin matrix. While the prepared CeO₂-GO hybrid materials and the composite coating (CeO₂-GO/E) P were characterized by means of FT-IR, XPS and SEM. The SEM images of the coating fracture morphology show that the CeO₂-GO hybrid material was uniformly dispersed in epoxy resin matrix. The results of water absorption and friction wear test manifest that the water absorption and friction coefficient of CeO₂-GO/EP coating are significantly lower than that of the pure epoxy resin coating. The potentiodynamic polarization curve and EIS test results indicate that the coating (CeO₂-GO/EP) with addition of 1.0%CeO₂-GO/EP has the lowest I_corr value (8.42 × 10^-13 A·cm^-2) and the higher E_corr value (-65 mV). After being immersed in 3.5% (mass fraction) NaCl solution for 60 d, the CeO₂-GO/EP coatings with mass fraction of 0.5%, 1.0%, 1.5% and 2.0% CeO₂-GO still presented |Z|_{0.01 Hz} values 7.88 × 10⁹, 4.97 × 10⁹, 5.26 × 10⁹ and 7.41 × 10⁹ Ω·cm², respectively. It is 1000 times of the pure epoxy resin coating |Z|_{0.01 Hz} value 6.56 × 10⁶ Ω·cm². According to the various performance test results, the long-term anti-corrosion performance of CeO₂-GO/EP coatings may be ascribed to the dual active/passive anti-corrosion mechanism.

Key words： surface and interface in the materials cerium dioxide graphene oxide epoxy resin anti-corrosion coating

收稿日期: 2024-05-22

ZTFLH:

TQ174.75

基金资助:国家自然科学基金(51775183);湖南省自然科学基金(2025JJ70082);湖南省教育厅科研基金(24A0335);中国科学院兰州化学物理研究所润滑材料全国重点实验室开放基金(LSL-2410);清华大学高端装备界面科学与技术全国重点实验室开放基金(SKLTKF24B10)

通讯作者: 欧宝立，教授，B.Ou@hnust.edu.cn，研究方向为表面涂层材料与技术

Corresponding author: OU Baoli, Tel: 18711342880, E-mail: B.Ou@hnust.edu.cn

作者简介: 彭怡和，男，1997年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2024.227 或 https://www.cjmr.org/CN/Y2025/V39/I4/259

图1 CeO2-GO杂化材料的制备示意图

图2 f-GO、f-CeO2和CeO2-GO的红外谱

图3 f-GO、f-CeO2和CeO2-GO的XPS谱，以及CeO2-GO中Si、N和Ce元素的精细谱和高斯拟合结果

图4 f-GO、CeO2-GO的SEM形貌和CeO2-GO的EDS元素分布图

图5 涂层断面的SEM形貌和0.5% CeO2-GO涂层的EDS元素分布图

图6 不同涂层样品浸泡不同时间后的吸水率

图7 不同涂层样品的摩擦系数

图8 不同涂层样品在3.5%NaCl溶液中浸泡3 d后的动电位极化曲线

表1 动电位极化曲线的电化学动力学参数拟合结果

图9 不同涂层样品在3.5%NaCl溶液中浸泡3 d后的Nyquist图和Bode图

图10 各涂层样品在3.5%NaCl溶液中浸泡不同时长后的Nyquist图

图11 不同涂层样品在3.5%NaCl溶液中浸泡不同时长后的Bode图

图12 用于拟合EIS测试结果的等效电路模型

图13 不同涂层样品在60 d浸泡时间内的|Z|0.01 Hz和Rct

图14 纯 EP涂层、f-GO/EP和CeO2-GO/EP复合防腐涂层的防腐机理示意图

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