高速列车用聚氨酯面漆耐蚀性能和老化机制研究

doi:10.11902/1005.4537.2022.377

中国腐蚀与防护学报

2023, Vol. 43

Issue (6): 1383-1391 CSTR: 32134.14.1005.4537.2022.377 DOI: 10.11902/1005.4537.2022.377

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高速列车用聚氨酯面漆耐蚀性能和老化机制研究

李春霖¹, 史洪微²^,³(

), 梁国平³^,⁴, 李丽¹, 王浩¹, 王伟⁴, 刘福春³, 韩恩厚³

^1.中车青岛四方机车车辆股份有限公司青岛 266111
^2.沈阳工业大学材料科学与工程学院沈阳 110870
^3.中国科学院金属研究所中国科学院核用材料与安全评价重点实验室沈阳 110016
^4.东北大学材料科学与工程学院材料各向异性与织构教育部重点实验室沈阳 110819

Corrosion Resistance and Aging Mechanism of Polyurethane Topcoat for High-speed Train

LI Chunlin¹, SHI Hongwei²^,³(

), LIANG Guoping³^,⁴, LI Li¹, WANG Hao¹, WANG Wei⁴, LIU Fuchun³, HAN En-Hou³

^1.CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, China
^2.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
^3.Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
^4.Key Laboratory for Anisotropy and Texture of Materials Ministry of Education, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China

引用本文:

李春霖, 史洪微, 梁国平, 李丽, 王浩, 王伟, 刘福春, 韩恩厚. 高速列车用聚氨酯面漆耐蚀性能和老化机制研究[J]. 中国腐蚀与防护学报, 2023, 43(6): 1383-1391.
Chunlin LI, Hongwei SHI, Guoping LIANG, Li LI, Hao WANG, Wei WANG, Fuchun LIU, En-Hou HAN. Corrosion Resistance and Aging Mechanism of Polyurethane Topcoat for High-speed Train[J]. Journal of Chinese Society for Corrosion and protection, 2023, 43(6): 1383-1391.

全文: PDF(4757 KB) HTML

摘要:

利用电化学阻抗谱 (EIS)、紫外老化、扫描电镜 (SEM) 和红外光谱 (FTIR) 等方法研究了铝合金板表面涂覆的聚氨酯面漆的耐蚀性能和老化机制。结果表明，在3.5wt.%NaCl溶液中浸泡240 h后，聚氨酯面漆发生了后固化现象。在浸泡384~1560 h期间，聚氨酯面漆/铝合金体系界面发生微腐蚀。在浸泡1920~2160 h期间，铝合金基材表面产生了腐蚀产物膜。聚氨酯面漆在紫外老化实验中，表面逐渐产生孔洞变得疏松并发生剥落、光泽度逐渐下降、失光率增加以及色差先增加后趋于稳定，老化前期以可见光降解为主，老化后期以紫外光降解为主。

关键词 ：聚氨酯面漆, 铝合金, 电化学阻抗谱, 紫外老化, Fourier变换红外光谱

Abstract：

The corrosion resistance and aging mechanism of polyurethane topcoat on Al-alloy plates used for high-speed train were studied by electrochemical impedance spectroscopy (EIS), ultraviolet aging, scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The results showed that the polyurethane topcoat presented post-curing phenomenon after immersing in 3.5wt.%NaCl solution for 240 h. The topcoat/Al-alloy interface was slightly corroded within the period of 384-1560 h, and the corrosion product film was formed on the surface of Al-alloy substrate within 1920-2160 h. During the ultraviolet (UV) aging test, holes gradually emerged on the surface of polyurethane topcoat, which then became loose and spalling, meanwhile its glossiness gradually decreased with increasing reduction of glossiness, as well as its color difference increased and then tended to be stable. It follows that the visible light degradation was the main degradation in the early stage of aging, and UV degradation was the main degradation in the late stage of aging.

Key words： polyurethane topcoat Al-alloy electrochemical impedance spectra ultraviolet aging Fourier transform infrared spectroscopy

收稿日期: 2022-12-01 32134.14.1005.4537.2022.377

ZTFLH:

TG172

基金资助:国家自然科学基金(52171089)

通讯作者: 史洪微，E-mail: hwshi@imr.ac.cn，研究方向为防护涂层

Corresponding author: SHI Hongwei, E-mail: hwshi@imr.ac.cn

作者简介: 李春霖，男，1994年生，硕士，工程师

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https://www.jcscp.org/CN/10.11902/1005.4537.2022.377 或 https://www.jcscp.org/CN/Y2023/V43/I6/1383

图1 聚氨酯面漆/铝合金体系浸泡在3.5%NaCl溶液中随时间变化的Bode和Nyquist图

图2 聚氨酯面漆/铝合金体系的EIS等效电路模型

图3 聚氨酯面漆/铝合金体系在3.5%NaCl溶液中随时间变化的Bode和Nyquist图

表1 聚氨酯面漆/铝合金体系浸泡在3.5%NaCl溶液中的EIS拟合结果

图4 聚氨酯面漆/铝合金体系浸泡在3.5%NaCl溶液中Rc随时间变化曲线

图5 不同老化时间后聚氨酯面漆的微观形貌

图6 不同老化时间后聚氨酯面漆的光泽度及失光率

图7 不同老化时间后聚氨酯面漆的色差

表2 聚氨酯树脂中主要官能团的FTIR峰

图8 不同老化时间后聚氨酯面漆的红外光谱

图9 不同老化时间后聚氨酯面漆主要官能团峰面积降低率

图10 不同老化时间后的聚氨酯面漆C=O和C-H峰面积之比

1	Sun X G, Wang R, Zhang Z Y, et al. On-line corrosion monitoring technology for high-speed train in dynamic service circumstance [J]. J. Chin. Soc. Corros. Prot., 2022, 42: 441
1	孙晓光, 王睿, 张志毅等. 高速列车动态服役环境腐蚀在线监测技术研究 [J]. 中国腐蚀与防护学报, 2022, 42: 441 doi: 10.11902/1005.4537.2021.239
2	Wang D X, Li L, Meng L P. Applications of polymeric materials in high speed train [J]. Plastics, 1999, 28(1): 7
2	王德禧, 李兰, 孟丽萍. 高分子材料在高速列车上的应用概况 [J]. 塑料, 1999, 28(1): 7
3	Wei R H. Status and prospects of railway vehicle coatings market [J]. Coat. Technol. Abstr., 2011, 32(3): 3
3	魏仁华. 铁路车辆用涂料市场发展现状及展望 [J]. 涂料技术与文摘, 2011, 32(3): 3
4	Sheng M G, Deng G Q. Manufacturing Technology and Application of New Polyurethane Coatings [M]. Guangzhou: Guangdong Science and Technology Press, 2001
4	盛茂桂, 邓桂琴. 新型聚氨酯树脂涂料生产技术与应用 [M]. 广州: 广东科技出版社, 2001
5	Ding K K, Liu S T, Guo W M, et al. Prediction for corrosion aging of polyethylene in marine atmospheric environment of Qingdao [J]. J. Chin. Soc. Corros. Prot., 2022, 42: 1070
5	丁康康, 刘少通, 郭为民等. 聚乙烯青岛海洋大气环境腐蚀老化预测研究 [J]. 中国腐蚀与防护学报, 2022, 42: 1070 doi: 10.11902/1005.4537.2021.318
6	Jia J H, Liu M, Luo C, et al. Corrosion and aging behavior of 2A97 Al-Li alloy with typical protective coatings in tropical marine atmosphere environment [J]. J. Chin. Soc. Corros. Prot., 2023, 43: 143
6	贾静焕, 刘明, 骆晨等. 2A97铝锂合金典型防护涂层热带海洋大气环境腐蚀老化行为 [J]. 中国腐蚀与防护学报, 2023, 43: 143 doi: 10.11902/1005.4537.2022.277
7	Pan J L, Wang B S, Zhang S Q, et al. Study on theory analysis of influencing factors on coatings glossiness [J]. Mod. Paint Finish., 2011, 14(12): 31
7	潘家亮, 王佰森, 张拴勤等. 涂层光泽度影响因素理论分析研究 [J]. 现代涂料与涂装, 2011, 14(12): 31
8	Hou C L. Improvement and control of color difference exterior plastic parts and paint color of auto body [J]. Mod. Paint Finish., 2010, 13(8): 41
8	侯长林. 车身外饰塑料件与车身涂层色差的改善和控制 [J]. 现代涂料与涂装, 2010, 13(8): 41
9	Zhang J Q, Cao C N. Study and evaluation on organic coatings by electrochemical impedance spectroscopy [J]. Corros. Prot., 1998, 19: 99
9	张鉴清, 曹楚南. 电化学阻抗谱方法研究评价有机涂层 [J]. 腐蚀与防护, 1998, 19: 99
10	Zhang J T, Hu J M, Zhang J Q, et al. Studies of impedance models and water transport behaviors of polypropylene coated metals in NaCl solution [J]. Prog. Org. Coat., 2004, 49: 293 doi: 10.1016/S0300-9440(03)00115-2
11	Hu J M, Zhang J Q, Cao C N. Determination of water uptake and diffusion of Cl^- ion in epoxy primer on aluminum alloys in NaCl solution by electrochemical impedance spectroscopy [J]. Prog. Org. Coat., 2003, 46: 273 doi: 10.1016/S0300-9440(03)00010-9
12	Yang X F, Tallman D E, Bierwagen G P, et al. Blistering and degradation of polyurethane coatings under different accelerated weathering tests [J]. Polym. Degrad. Stab., 2002, 77: 103 doi: 10.1016/S0141-3910(02)00085-X
13	Liu J, Li Z, Zhang L W, et al. Degradation behavior and mechanism of polyurethane coating for aerospace application under atmospheric conditions in South China Sea [J]. Prog. Org. Coat., 2019, 136: 105310
14	Merlatti C, Perrin F X, Aragon E, et al. Natural and artificial weathering characteristics of stabilized acrylic-urethane paints [J]. Polym. Degrad. Stab., 2008, 93: 896 doi: 10.1016/j.polymdegradstab.2008.02.008
15	Wang D X, Li H, Sun Y, et al. Study on artificial accelerated light aging of PU organic coatings [J]. Synth. Mater. Aging Appl., 2016, 45(5): 22
15	王登霞, 李晖, 孙岩等. 聚氨酯有机涂层体系的加速光老化降解机理研究 [J]. 合成材料老化与应用, 2016, 45(5): 22
16	Yang X F, Vang C, Tallman D E, et al. Weathering degradation of a polyurethane coating [J]. Polym. Degrad. Stab., 2001, 74: 341 doi: 10.1016/S0141-3910(01)00166-5
17	Cai G Y. Degradation mechanism and modification of polyurethane coating and rapid evaluation on its failure [D]. Wuhan: Huazhong University of Science and Technology, 2018
17	蔡光义. 聚氨酯涂层的老化机制及改性与失效评价方法研究 [D]. 武汉: 华中科技大学, 2018
18	Zhu Y H, Yao J H, Lin Z Y, et al. Discussion on mechanism of photoageing of polyurethane top finish [J]. Paint Coat. Ind., 2005, 35(6): 44
18	朱永华, 姚敬华, 林仲玉等. 聚氨酯面漆光老化机理的探讨 [J]. 涂料工业, 2005, 35(6): 44
19	Mishra A K, Chattopadhyay D K, Sreedhar B, et al. FT-IR and XPS studies of polyurethane-urea-imide coatings [J]. Prog. Org. Coat., 2006, 55: 231 doi: 10.1016/j.porgcoat.2005.11.007

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