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

表2 聚氨酯树脂中主要官能团的FTIR峰

Table 2 FTIR peaks of main functional groups in polyurethane resin

Vibration mode of functional groups Vibration frequency / cm-1 O-H stretching 3100-3600 Asymmetric -CH2 stretching 2932 Symmetric -CH2 stretching 2860 C=O stretching 1723, 1685 C-N stretching and N-H bending in amide group 1522 Asymmetric -CH2 bending 1461 Symmetric -CH2 bending 1335 -CH3 bending 1379 C-O stretching 1243, 1133, 1073 C-O-C stretching 1016