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SiO2或TiO2纳米粒子/含氟聚丙烯酸酯复合涂层的制备及其防腐蚀性能

梁晓蕾 刘创华 米欣 朱伟东 周强 肖强

梁晓蕾, 刘创华, 米欣, 等. SiO2或TiO2纳米粒子/含氟聚丙烯酸酯复合涂层的制备及其防腐蚀性能[J]. 复合材料学报, 2020, 37(8): 1832-1840. doi: 10.13801/j.cnki.fhclxb.20191206.003
引用本文: 梁晓蕾, 刘创华, 米欣, 等. SiO2或TiO2纳米粒子/含氟聚丙烯酸酯复合涂层的制备及其防腐蚀性能[J]. 复合材料学报, 2020, 37(8): 1832-1840. doi: 10.13801/j.cnki.fhclxb.20191206.003
LIANG Xiaolei, LIU Chuanghua, MI Xin, et al. Preparation and corrosion resistance of SiO2 or TiO2 nano particles/fluorinated polyacrylate polymer composite coatings[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 1832-1840. doi: 10.13801/j.cnki.fhclxb.20191206.003
Citation: LIANG Xiaolei, LIU Chuanghua, MI Xin, et al. Preparation and corrosion resistance of SiO2 or TiO2 nano particles/fluorinated polyacrylate polymer composite coatings[J]. Acta Materiae Compositae Sinica, 2020, 37(8): 1832-1840. doi: 10.13801/j.cnki.fhclxb.20191206.003

SiO2或TiO2纳米粒子/含氟聚丙烯酸酯复合涂层的制备及其防腐蚀性能

doi: 10.13801/j.cnki.fhclxb.20191206.003
基金项目: 国家自然科学基金(21471131)
详细信息
    通讯作者:

    肖强,研究员,博士生导师,研究方向为涂层及膜材料 E-mail:xiaoq@zjnu.cn

  • 中图分类号: TB332

Preparation and corrosion resistance of SiO2 or TiO2 nano particles/fluorinated polyacrylate polymer composite coatings

  • 摘要: 通过在含氟聚丙烯酸酯(PFHI)溶液中添加固体纳米粒子,经涂覆热固化后得到了厚度约为1 μm的SiO2或TiO2纳米粒子/PFHI复合涂层,考察了SiO2或TiO2两种纳米粒子质量分数对复合涂层表面性质和防腐蚀性能的影响。利用Tafel极化曲线和电化学交流阻抗(EIS)测试研究了复合涂层在3.5wt% NaCl溶液中的电化学防腐蚀性能,并运用XPS、衰减全反射傅里叶变换红外光谱(ATR-FTIR)、TG-DTA、SEM、光学接触角(OCA)手段对复合涂层进行表征。结果表明,添加SiO2或TiO2纳米粒子均可大幅提高PFHI涂层的电化学防腐蚀性能,SiO2与PFHI质量比为0.3的SiO2/PFHI复合涂层电荷转移阻抗值Rct与PFHI涂层相比上升了2个数量级。SiO2或TiO2纳米粒子增大了涂层表面粗糙度,与PFHI紧密结合形成致密的复合涂层,提高了涂层的疏水性和致密性,从而改善了涂层的抗腐蚀性能。

     

  • 图  1  SiO2/PFHI (a)和TiO2/PFHI (b)复合涂层的油水接触角

    Figure  1.  Water and hexadecane contact angles of SiO2/PFHI (a) and TiO2/PFHI (b) composite coatings

    图  2  TiO2/PFHI复合涂层的Tafel极化曲线

    Figure  2.  Tafel polarization curves of TiO2/PFHI composite coatings

    图  3  SiO2/PFHI复合涂层 (a)和TiO2/PFHI复合涂层 (b)的电化学交流阻抗图谱(EIS)

    Figure  3.  Electrochemical impedance spectroscopy (EIS) plots of the SiO2/PFHI composite(a) and TiO2/PFHI composite(b) coatings

    Zre—Real impedance; Zim—Imaginary impedance

    图  4  由Zview软件拟合EIS曲线的电路图

    Figure  4.  Circuit image for EIS curves fitted by Zview software

    图  5  PFHI ((a)、(b))、0.1TiO2/PFHI ((c)、(d))和0.3SiO2/PFHI ((e)、(f))涂层表面和截面SEM图像

    Figure  5.  Surface and cross-sectional SEM images of PFHI ((a),(b)), 0.1TiO2/PFHI ((c),(d)) and 0.3SiO2/PFHI ((e),(f)) coatings

    图  6  PFHI (a)、 0.1TiO2/PFHI (b)和0.3SiO2/PFHI (c)涂层的ATR-FTIR图谱

    Figure  6.  ATR-FTIR spectra of PFHI (a), 0.1TiO2/PFHI(b) and 0.3SiO2/PFHI (c) coatings

    图  7  PFHI (a)、0.1TiO2/PFHI (b)和0.3SiO2/PFHI (c)涂层的XPS图谱

    Figure  7.  XPS spectra of PFHI (a), 0.1TiO2/PFHI (b) and 0.3SiO2/PFHI (c) coatings

    图  8  PFHI (a)、 0.1TiO2/PFHI (b)和0.3SiO2/PFHI (c)涂层的TG-DTA曲线

    Figure  8.  TG-DTA curves of PFHI (a), 0.1TiO2/PFHI (b) and 0.3SiO2/PFHI (c) coatings

    表  1  SiO2或TiO2/含氟聚丙烯酸酯(PFHI)涂层配方

    Table  1.   Recipe of SiO2 or TiO2/fluorinated polyacrylate polymer (PFHI) coatings

    Sample5wt% PFHI
    solution/g
    Nano particle/gNano particle:
    PFHI (Mass ratio)
    0.1SiO2/PFHI 10 0.05 0.1
    0.2SiO2/PFHI 0.10 0.2
    0.3SiO2/PFHI 0.15 0.3
    0.4SiO2/PFHI 0.20 0.4
    0.1TiO2/PFHI 10 0.05 0.1
    0.2TiO2/PFHI 0.10 0.2
    0.3TiO2/PFHI 0.15 0.3
    0.4TiO2/PFHI 0.20 0.4
    下载: 导出CSV

    表  2  TiO2/PFHI复合材料涂层的Tafel极化曲线拟合数据

    Table  2.   Fitting data of Tafel polarization curves for TiO2/PFHI composite coatings

    SampleIcorr/10−9 (A·cm−2)Ecorr/
    mV
    Corrosion rate/10−5
    (mm·a−1)
    βcβaPe/
    %
    Blank 1 501 −312 1 741 7.35 6.620
    PFHI 7.570 −197 8.780 8.12 37.93 99.5
    0.1TiO2/PFHI 3.110 −168 3.610 8.03 3.620 99.8
    0.2TiO2/PFHI 16.08 −247 18.66 8.20 2.910 99.0
    0.3TiO2/PFHI 12.59 −126 14.61 8.78 28.21 99.2
    0.4TiO2/PFHI 91.10 −254 105.7 7.76 3.200 94.0
    Notes: Icorr—Corrosion current density; Ecorr—Corrosion electric potential; βc—Cathode Tafel slope; βa—Anode Tafel slope; Pe—Protection efficiency in the electrochemical corrosion experiments.
    下载: 导出CSV

    表  3  SiO2/PFHI和TiO2/PFHI复合涂层的EIS曲线拟合数据

    Table  3.   Fitting data of EIS curves of SiO2/PFHI and TiO2/PFHI composite coatings

    SampleRs/(Ω·cm2)Rct/106 (Ω·cm2)Y0/10−7n
    Blank 6.36 0.07 321 0.874
    PFHI 74.68 3.91 5.93 0.869
    0.1SiO2/PFHI 125.4 25.2 1.06 0.844
    0.2SiO2/PFHI 146.3 56.2 0.262 0.856
    0.3SiO2/PFHI 126.2 328 0.016 0.962
    0.4SiO2/PFHI 135.8 263 12.8 0.875
    0.1TiO2/PFHI 159.2 42.5 59.0 0.781
    0.2TiO2/PFHI 154.0 3.23 1.32 0.747
    0.3TiO2/PFHI 147.7 3.53 1.72 0.706
    0.4TiO2/PFHI 118.1 2.37 1.04 0.774
    Notes: Rs—Solution impedance; Rct—Charge transfer resistance; Y0—Constant of constant phase element(CPE); n—Surface roughness of the surface of phase shifting working electrode.
    下载: 导出CSV

    表  4  涂覆涂层碳钢在6wt% FeCl3溶液中的质量损失

    Table  4.   Mass loss of coated carbon steel in 6wt% FeCl3 solution

    Samplemloss/mgRM /%Pc/%
    Blank 149.9 1.75 0
    PFHI 126.0 1.47 15.9
    0.1SiO2/PFHI 109.6 1.28 26.9
    0.2SiO2/PFHI 106.6 1.25 28.9
    0.3SiO2/PFHI 77.3 0.90 48.4
    0.4SiO2/PFHI 108.7 1.28 27.5
    0.1TiO2/PFHI 94.8 1.10 36.8
    0.2TiO2/PFHI 127.0 1.47 15.3
    0.3TiO2/PFHI 125.8 1.47 16.1
    0.4TiO2/PFHI 137.6 1.60 8.2
    Notes: mloss—Mass loss of the sample after the chemical corrosion experiments; RM—Percentage of mass loss; Pc—Protection efficiency in the chemical corrosion experiments.
    下载: 导出CSV

    表  5  PFHI、0.1TiO2/PFHI和0.3SiO2/PFHI涂层表面元素含量

    Table  5.   Surface element contents of PFHI, 0.1TiO2/PFHI and 0.3SiO2/PFHI coatings

    CoatingF/at%C/at%O/at%F/CTi or Si/at%
    PFHI 47.37 43.42 7.96 1.09
    0.1TiO2/PFHI 46.64 42.90 8.64 1.09 0.76
    0.3SiO2/PFHI 38.66 39.86 15.24 0.97 4.66
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-09-10
  • 录用日期:  2019-11-23
  • 网络出版日期:  2019-12-06
  • 刊出日期:  2020-08-15

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