房亚楠,刘栓,赵文杰,白琴,刘志雄,赵海超.石墨烯/氟碳涂层的制备及其耐蚀性能[J].表面技术,2016,45(11):67-75.
FANG Ya-nan,LIU Shuan,ZHAO Wen-jie,BAI Qin,LIU Zhi-xiong,ZHAO Hai-chao.Preparation and Corrosion Resistance of Graphene/Fluorocarbon Coating[J].Surface Technology,2016,45(11):67-75 |
| 石墨烯/氟碳涂层的制备及其耐蚀性能 |
| Preparation and Corrosion Resistance of Graphene/Fluorocarbon Coating |
| 投稿时间：2016-03-17 修订日期：2016-11-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.11.010 |
| 中文关键词: 氟碳树脂 石墨烯 分散性 改性 腐蚀行为 电化学 |
| 英文关键词:fluorocarbon resin graphene dispersibility modification corrosion behavior electrochemical measurements |
| 基金项目:国家自然科学基金（51202263、 51335010） ；“ 973”计划项目（2014CB643305） ；宁波市石墨烯重大科技专项（2013B6013） ；中国博士后基金（2015M580528） |
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| Author | Institution |
| FANG Ya-nan | 1.School of Materials and Engineering, Shanghai University, Shanghai 200000, China; 2.Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering of Chinese Academy of Sciences, Ningbo 315201, China |
| LIU Shuan | Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering of Chinese Academy of Sciences, Ningbo 315201, China |
| ZHAO Wen-jie | Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering of Chinese Academy of Sciences, Ningbo 315201, China |
| BAI Qin | School of Materials and Engineering, Shanghai University, Shanghai 200000, China |
| LIU Zhi-xiong | Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering of Chinese Academy of Sciences, Ningbo 315201, China |
| ZHAO Hai-chao | Key Laboratory of Marine Materials and Related Technologies of Chinese Academy of Sciences, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering of Chinese Academy of Sciences, Ningbo 315201, China |
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| 中文摘要: |
| 目的 为了增强氟碳涂层的耐蚀性，研究涂层在 3.5%NaCl 溶液中的失效过程。 方法 采用硅烷偶联剂对石墨烯进行接枝改性，将改性后的石墨烯添加到氟碳树脂中，制成不同含量的石墨烯氟碳复合涂层。采用傅里叶变换红外光谱、拉曼光谱、透射电镜和扫描电镜，分析了石墨烯改性前后的结构及在涂层中的分散性。采用交流阻抗谱和动电位极化曲线，研究了涂层在模拟海水中的电化学腐蚀行为和失效过程，并考察了涂层的耐盐雾性能。 结果 石墨烯表面成功接枝官能团，在涂层中分散较均匀。石墨烯对腐蚀介质具有良好的屏障作用。涂层的防护性能随着石墨烯含量的增大先增加后降低，当含量为 0.4%（质量分数）时，涂层的腐蚀电流密度为 2.209×10–10 A/cm2，氟碳涂层的腐蚀电流密度为 6.026×10–6 A/cm2，腐蚀电流密度大大降低，该涂层的耐蚀性能最好，且浸泡 360 h 内均为浸泡前期，能有效隔绝腐蚀液体的渗透，对 Q235 钢基底的防护性能最佳。石墨烯含量过高时易团聚，容易引起缺陷，降低涂层的防护作用。 结论 石墨烯显著提高了氟碳涂层的耐蚀性能。 |
| 英文摘要: |
| The work aims to enhance the corrosion resistance of fluorocarbon coating by studying its failure process in 3.5% NaCl solution. Functionalized graphene obtained by using silane coupling agent for graft modification was added to fluorocarbon resin to fabricate a series of fluorocarbon coatings reinforced with various content of graphene. Structural properties and dispersibility of graphene in the coatings before and after being modified were characterized by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Moreover, the electrochemical corrosion behavior and failure process of the coatings in simulated seawater (3.5% NaCl solution) were investigated by virtue of AC impedance spectroscopy and potentiodynamic polarization curve. In addition, salt fog resistance of the coatings was studied as well. The results showed that the graphene surface could be grafted to functional groups successfully and was well dispersed in the coating. The graphene could be well protected from aggressive mediums. Anti-corrosion performance of the coatings first increased and then decreased as the graphene content increased. Provided with graphene coating of 0.4% (mass fraction), corrosion current density of the coatings 2.209×10–10 A/cm2 and that of fluorocarbon coating 6.026×10–6 A/cm2, significant reduction of corrosion current density contributed to optimal corrosion resistance. Finally, during the 360 h of immersion which fell into early immersion stage, the FEVE-0.4%G coating showed an effective corrosion resistance and could protect Q235 steel substrate in the best manner. The corrosion resistance of fluorocarbon coating can be improved greatly by graphene. |
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