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中国腐蚀与防护学报  2024, Vol. 44 Issue (2): 413-421     CSTR: 32134.14.1005.4537.2023.145      DOI: 10.11902/1005.4537.2023.145
  研究报告 本期目录 | 过刊浏览 |
钢筋表面双功能磷酸氢钛改性的硅溶胶涂层研究
赵鹏1,2, 郝春艳1,2, 杨胜杰3, 于金山1,2, 武爽4, 于奔1,2, 张俊喜3()
1.国网天津市电力公司电力科学研究院 天津 300384
2.天津市电力物联网企业重点实验室 天津 300384
3.上海电力大学 电力材料防护与新材料上海市重点实验室 上海 200090
4.天津送变电工程有限公司 天津 300000
Silica Sol Coating Modified by Bifunctional Titanium Phosphate for Reinforce Bars
ZHAO Peng1,2, HAO Chunyan1,2, YANG Shengjie3, YU Jinshan1,2, WU Shuang4, YU Ben1,2, ZHANG Junxi3()
1.State Grid Tianjin Electric Power Research Institute, Tianjin 300384, China
2.Tianjin Key Laboratory of Internet of Things in Electricity, Tianjin 300384, China
3.Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, China
4.Tianjin Power Transmission and Transformation Engineering Company, Tianjin 300000, China
引用本文:

赵鹏, 郝春艳, 杨胜杰, 于金山, 武爽, 于奔, 张俊喜. 钢筋表面双功能磷酸氢钛改性的硅溶胶涂层研究[J]. 中国腐蚀与防护学报, 2024, 44(2): 413-421.
Peng ZHAO, Chunyan HAO, Shengjie YANG, Jinshan YU, Shuang WU, Ben YU, Junxi ZHANG. Silica Sol Coating Modified by Bifunctional Titanium Phosphate for Reinforce Bars[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(2): 413-421.

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摘要: 

制备了一种用于钢筋表面的硅溶胶涂层，以水玻璃为前驱体，在涂层制备中引入α-磷酸氢钛(α-TiP)填料，采用XRD、FT-IR、SEM以及离子色谱仪等对α-TiP的结构形貌及离子交换能力进行了表征，并采用XRD、FT-IR、SEM、电化学测试等对涂层的结构形貌及防腐蚀性能进行分析研究。结果表明，α-TiP的离子交换功能可吸纳水玻璃中存在的游离Na+，制备得到的硅溶胶涂层中含有片状α-TiP填料可有效提高涂层的阻隔性能，进而提升硅溶胶涂层对钢筋腐蚀的防护性能，且当添加量为0.4 g时涂层防护性能最好。
关键词 ： α-磷酸氢钛,  离子交换填料,  硅溶胶,  涂层    
Abstract：

A silica sol coating for the surface of steel bars was prepared via mechanical blending and ultrasonic dispersion with water glass as the film precursor and α-Titanium hydrogen phosphate (α-TiP) as fillers, since the α-TiP is a cationic layered compound with excellent ion exchange performance. The structural morphology and ion exchange ability of α-TiP, as well as the structural morphology and corrosion resistance of the coating were assessed by means of XRD, FT-IR, SEM, ion chromatography, and electrochemical measurement respectively. The results indicate that with ion exchange function the α-TiP can absorb free sodium ions within the water glass, and the prepared silica sol coating contains flakes of α-TiP filler can effectively improve the barrier performance of the coating, thereby enhance the protective performance of the silica sol coating against steel corrosion, whilst the coating has the best protective performance when the addition amount of α-TiP is 0.4 g.
Key words： α- titanium hydrogen phosphate    ion exchange fillers    silica sol    coating
收稿日期: 2023-05-08      32134.14.1005.4537.2023.145
ZTFLH:  TG174  
基金资助:国网天津市电力公司科技项目(KJ21-1-12)
通讯作者: 张俊喜，E-mail：zhangjunxi@shiep.edu.cn，研究方向为金属腐蚀与防护
Corresponding author: ZHANG Junxi, E-mail: zhangjunxi@shiep.edu.cn
作者简介: 赵鹏，男，1988年生，高级工程师
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链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2023.145      或      https://www.jcscp.org/CN/Y2024/V44/I2/413

图1  不同温度和时间下合成的α-TiP的XRD谱及(002)与(112)峰峰强比
图2  不同水热条件下α-TiP的红外光谱
图3  不同水热条件合成的α-TiP形貌图
图4  不同合成条件合成的α-TiP的离子交换容量
图5  涂层α-TiP改性前后XRD图
图6  涂层样品截面SEM图像及EDS
图7  不同添加量涂层极化曲线图
SampleEcorr / V vs SCEI0 / A·cm-2
0-0.6672.27 × 10-6
0.2-0.5774.15 × 10-8
0.4-0.5168.817 × 10-9
0.6-0.5578.26 × 10-8
表1  极化曲线拟合值
Sample

Time

d

CPEf

nΩ-1·Sn·cm-2

n1

Rf

Ω·cm2

CPEdl

nΩ-1·Sn·cm-2

n2

Rct

Ω·cm2

0 g11.237 × 10-70.75641.808 × 1052.479 × 10-70.71361.72 × 105
31.817 × 10-60.68343143.425 × 10-50.61161.096 × 104
52.38 × 10-50.527125177.609 × 10-60.6536903.4
0.2 g14.772 × 10-100.92578.495 × 1062.138 × 10-80.58332.451 × 107
34.90 × 10-100.92372.826 × 1063.685 × 10-80.36592.371 × 107
56.49 × 10-100.91831.18 × 1061.136 × 10-70.46441.038 × 107
79.152 × 10-100.91943.027 × 1058.179 × 10-80.61243.373 × 105
0.4 g14.288 × 10-100.89674.449 × 1065.79 × 10-80.38011.679 × 108
37.397 × 10-1319.33 × 1061.305 × 10-90.2352.536 × 107
54,474 × 10-120.89678.067 × 1066.125 × 10-90.21861.943 × 108
78.368 × 10-90.29857.732 × 1061.072 × 10-120.98191.166 × 108
0.6 g15.674 × 10-80.90905.207 × 1063.027 × 10-80.54742.932 × 107
34.03 × 10-100.94295.762 × 1054.983 × 10-80.27923.865 × 107
56.14 × 10-100.91546.066 × 1062.273 × 10-70.65473.146 × 107
76.599 × 10-100.91522.159 × 1063.976 × 10-80.47336.076 × 107
表2  不同添加量的涂层的拟合值
图8  不同添加量涂层的Bode图
图9  等效电路图
图10  Rf和Rct随浸泡时间变化曲线
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