窦宝捷,付英奎,高秀磊,张颖君,林修洲,王兆华,马兵,方治文.氟化石墨烯对环氧树脂涂层耐蚀性能的影响[J].表面技术,2020,49(8):241-248.
DOU Bao-jie,FU Ying-kui,GAO Xiu-lei,ZHANG Ying-jun,LIN Xiu-zhou,WANG Zhao-hua,MA Bing,FANG Zhi-wen.Effect of Fluorographene on Corrosion Resistance of Epoxy Resin Coating[J].Surface Technology,2020,49(8):241-248 |
| 氟化石墨烯对环氧树脂涂层耐蚀性能的影响 |
| Effect of Fluorographene on Corrosion Resistance of Epoxy Resin Coating |
| 投稿时间：2019-11-08 修订日期：2020-08-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.08.028 |
| 中文关键词: 氟化石墨烯 环氧树脂 涂层 疏水性 长周期 耐蚀性能 |
| 英文关键词:fluorographene epoxy resin coating hydrophobicity long period corrosion resistance |
| 基金项目:国家自然科学基金（E51901146，U1633118）；四川省青年科技创新研究团队项目（2016TD0024）；材料腐蚀与防护四川省重点实验室开放基金（2017CL01）；大学生创新创业训练计划项目（cx2018004） |
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| Author | Institution |
| DOU Bao-jie | 1.a.School of Materials Science and Engineering, b.Key Laboratory for Materials Corrosion and Protection of Sichuan Province, Sichuan University of Science & Engineering, Zigong 643000, China |
| FU Ying-kui | 1.a.School of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong 643000, China |
| GAO Xiu-lei | 2.Zhongshan Photoelectric Material Co., Ltd, Zibo 255138, China |
| ZHANG Ying-jun | 1.a.School of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong 643000, China |
| LIN Xiu-zhou | 1.a.School of Materials Science and Engineering, b.Key Laboratory for Materials Corrosion and Protection of Sichuan Province, Sichuan University of Science & Engineering, Zigong 643000, China |
| WANG Zhao-hua | 1.a.School of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong 643000, China |
| MA Bing | 1.a.School of Materials Science and Engineering, Sichuan University of Science & Engineering, Zigong 643000, China |
| FANG Zhi-wen | 2.Zhongshan Photoelectric Material Co., Ltd, Zibo 255138, China |
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| 中文摘要: |
| 目的 探究氟化石墨烯（FG）添加对环氧树脂（EP）涂层耐蚀性能的影响。方法 通过SEM、XRD、FT-IR、AFM、粒径分布对FG的微观组织结构进行表征，利用沉降实验研究FG在EP中的分散稳定性，结合涂层断面形貌研究FG在涂层中的分布情况。采用电化学阻抗谱研究EP涂层和FG改性EP涂层（FG/EP涂层）在3.5% NaCl溶液中的腐蚀行为。结果 FG尺寸约为1 μm，厚度为5 nm，呈典型的片层状结构。FG在EP中具有较好的分散稳定性，FG添加使EP涂层的接触角由95.3°提高至110.9°，提高了涂层的疏水性，降低了腐蚀介质与涂层表面的接触面积。在浸泡初期，EP涂层和FG/EP涂层的低频阻抗模值（|Z|0.01 Hz）均在1011 Ω•cm2左右。随浸泡时间的延长，EP涂层的|Z|0.01 Hz快速下降至109 Ω•cm2，而FG/EP涂层在3000 h浸泡过程中始终维持在1011 Ω•cm2以上。涂层电阻（Rc）也表现出相似的变化规律。FG添加提高了EP涂层的屏蔽性能，改善了涂层的长期防护性能。结论 FG添加至EP中，可在涂层内部形成“迷宫效应”，提高涂层的屏蔽性能，增加腐蚀介质的扩散路径，延缓腐蚀介质的渗透过程，显著改善涂层对基体的长期防护作用。 |
| 英文摘要: |
| The work aims to study the effect of fluorographene on the corrosion resistance of epoxy resin coating. SEM, XRD, FT-IR, AFM and particle size distribution were used to characterize the microstructure of FG. The stability of FG in EP was studied by settlement experiment, and the distribution of FG in the coating was studied by the cross-section morphology of coating. The corrosion behavior of EP coating and FG/EP coating in 3.5 wt.% NaCl solution was investigated by electrochemical impedance spectroscopy (EIS). FG was 1 μm in size and 5 nm in thickness, showing a typical lamellar structure. FG had good dispersion stability in EP. The contact angle of the EP coating increased from 95.3° to 110.9° with the addition of FG, which increased the hydrophobicity of the coating and decreased the contact between the corrosive medium and the surface of the coating. At the beginning of immersion, the low frequency impedance modulus (|Z|0.01Hz) of the EP coating and FG/EP coating were about 1011 Ω•cm2. With the increase of immersion time, the |Z|0.01Hz of EP coating decreased rapidly to 109 Ω•cm2, while the FG/EP coating remained above 1011 Ω•cm2 during 3000 h immersion. The coating resistance (Rc) also showed a similar changing regularity. FG increased the barrier property of EP coating and improved the long-term protection performance of the coating. Adding FG to EP coating can form a “Mazes” inside the coating, improve the barrier performance of the coating, increase the diffusion path of the corrosive medium, delay the penetration process of the corrosive medium, and improve the long-term protection of the coating on the substrate. |
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