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中国腐蚀与防护学报  2024, Vol. 44 Issue (5): 1234-1242     CSTR: 32134.14.1005.4537.2023.340      DOI: 10.11902/1005.4537.2023.340
  研究报告 本期目录 | 过刊浏览 |
纳米改性环氧隔热涂层的制备及其耐蚀性研究
吕晓明1, 王震宇1(), 韩恩厚1,2()
1 广东腐蚀科学与技术创新研究院 广州 510000
2 华南理工大学材料科学与工程学院 广州 510000
Preparation and Corrosion Resistance of Nano-ZrO2 Modified Epoxy Thermal Insulation Coatings
LYU Xiaoming1, WANG Zhenyu1(), HAN En-Hou1,2()
1 Institute of Corrosion Science and Technology, Guangzhou 510000, China
2 School of Materials Science and Engineering, South China University of Technology, Guangzhou 510000, China
引用本文:

吕晓明, 王震宇, 韩恩厚. 纳米改性环氧隔热涂层的制备及其耐蚀性研究[J]. 中国腐蚀与防护学报, 2024, 44(5): 1234-1242.
Xiaoming LYU, Zhenyu WANG, En-Hou HAN. Preparation and Corrosion Resistance of Nano-ZrO2 Modified Epoxy Thermal Insulation Coatings[J]. Journal of Chinese Society for Corrosion and protection, 2024, 44(5): 1234-1242.

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摘要: 

针对海洋湿态热腐蚀环境，制备了纳米改性环氧耐蚀隔热涂层；并探究腐蚀过程中涂层的耐盐水、耐盐雾、抗冷热冲击及隔热性能等变化特征，分析腐蚀环境中纳米ZrO2提高环氧隔热涂层耐腐蚀性与隔热性能的关联性。研究表明，纳米改性涂层在腐蚀环境中的耐蚀与隔热稳定性得以显著提升，其中3% ZrO2添加量时，改善效果最好，而含量过少、过多时不能达到理想的防护性能。
关键词 ： 海洋环境,  纳米ZrO2,  环氧涂层,  耐腐蚀,  隔热性    
Abstract：

Located on coastal areas, facilities and pipelines serviced at high temperature will encounter from humid-hot corrosive environments for a long period, which can lead to deterioration of their thermal insulation coating. In this study, nano-ZrO2 particles modified corrosion-resistant and thermal insulated epoxy coatings were prepared and characterized in terms of salt water resistance, salt fog resistance, cold and heat shock resistance and thermal insulation performance. The results showed that the corrosion resistance and thermal insulation stability of nano-modified coatings in corrosive environments could be significantly improved. The improvement effect was the best when 3% nano- ZrO2 particles was added, but the ideal protective performance could not be achieved when the content was too small or too much.
Key words： marine environment    nano- ZrO2    epoxy coating    corrosion resistance    thermal insulation
收稿日期: 2023-11-01      32134.14.1005.4537.2023.340
ZTFLH:  TQ174  
基金资助:国家重点研发计划(2021YFB3701700);广东省自然科学基金(2021A1515010628)
通讯作者: 王震宇，E-mail：zywang@icost.ac.cn, 研究方向为腐蚀与防护新材料韩恩厚，E-mail：ehhan@icost.ac.cn，研究方向为腐蚀防护技术
Corresponding author: WANG Zhenyu, E-mail: zywang@icost.ac.cnHAN En-Hou, E-mail: ehhan@icost.ac.cn
作者简介: 吕晓明，女，1992年生，硕士生
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链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2023.340      或      https://www.jcscp.org/CN/Y2024/V44/I5/1234

CoatingComposition
Z075% epoxy resin + 10% glass-flake + 10% glass beads + 5% solvent + 30% curing agent
Z1

74% epoxy resin + 10% glass-flake + 10% glass beads + 1% nano zirconia slurry concentrate +

5% solvent + 29.6% curing agent

Z3

72% epoxy resin + 10% glass-flake + 10% glass beads + 3% nano zirconia slurry concentrate +

5% solvent + 28.8% curing agent

Z5

70% epoxy resin + 10% glass-flake + 10% glass beads + 5% nano zirconia slurry concentrate +

5% solvent + 28% curing agent
表1  4种实验涂层成分
图1  纳米ZrO2的TEM形貌、选区电子衍射、粒径分布及放置90 d后的沉降情况
图2  涂层在60℃下3.5%NaCl溶液浸泡500 h前后的宏观形貌
图3  环氧及改性涂层在60℃下3.5%NaCl溶液中浸泡24 h后的EIS谱
图4  环氧及改性涂层在60℃下3.5%NaCl溶液中浸泡480 h后的EIS谱
图5  环氧及改性涂层在60℃下3.5% NaCl溶液中浸泡960 h后的EIS谱
图6  环氧及改性涂层在60℃下3.5%NaCl溶液中浸泡1440 h后的EIS谱
图7  环氧及改性涂层电化学阻抗谱等效电路图
Sample

Time

h

Rs

Ω·cm2

Qcoat

F·cm-2

nc

Rcoat

Ω·cm2

Qct

F·cm-2

nct

Rct

Ω·cm2

Z0240.361.12 × 10-90.943.90 × 10101.95 × 1030.992.34 × 109
4804.628.83 × 10-100.979.55 × 1064.60 × 10-60.778.41 × 106
9602.434.21 × 1090.982.79 × 1051.41 × 10-50.395.22 × 105
14407.734.79 × 10-90.998.02 × 1042.46 × 10-50.401.03 × 105
Z1240.427.30 × 10-100.909.52 × 10103.28 × 10-90.131.01 × 109
4806.981.15 × 10-100.994.13 × 1087.41 × 10-80.876.04 × 107
9603.592.83 × 10-90.954.87 × 1073.13 × 10-70.729.43 × 107
14406.621.53 × 10-90.996.99 × 1062.06 × 10-60.681.78 × 106
Z3240.384.75 × 10-110.967.23 × 10103.16 × 10-110.853.51 × 1010
4805.156.39 × 10-110.974.38 × 10102.87 × 10-80.011.61 × 109
9603.292.17 × 10-90.911.28 × 1091.52 × 10-70.019.31 × 108
14403.281.36 × 10-90.951.82 × 1081.36 × 10-70.653.22 × 107
Z5240.285.56 × 10-110.964.83 × 10102.92 × 1050.931.58 × 109
4805.282.09 × 10-100.965.04 × 1093.21 × 1020.762.81 × 108
9604.566.37 × 10-100.988.47 × 1083.48 × 10-80.607.70 × 108
14404.321.49 × 10-90.961.05 × 1075.21 × 10-90.147.11 × 106
表2  环氧及改性涂层在60℃下3.5%NaCl溶液中浸泡不同时间后的EIS拟合结果
图8  环氧及改性涂层电化学元件参数随腐蚀浸泡时间的变化
图9  4种涂层在60℃下3.5%NaCl溶液中浸泡不同时间后粘结强度变化
图10  4种涂层盐雾腐蚀2100 h前后的宏观形貌
图11  不同周次后涂层的磨损量
图12  4种涂层在20个高低温冷热循环前后的光学照片
图13  4种涂层盐雾腐蚀不同时间后温差-时间隔热曲线
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