高速列车用聚氨酯面漆耐蚀性能和老化机制研究

李春霖, 史洪微, 梁国平, 李丽, 王浩, 王伟, 刘福春, 韩恩厚

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

LI Chunlin, SHI Hongwei, LIANG Guoping, LI Li, WANG Hao, WANG Wei, LIU Fuchun, HAN En-Hou

图2 聚氨酯面漆/铝合金体系的EIS等效电路模型

Fig.2 Equivalent circuit models of EIS of polyurethane topcoat / aluminum alloy system after immersion in 3.5%NaCl solution for 0.5-240 h (a), 384-1560 h (b) and 1920-2160 h (c)