(a)涂层缺陷的深长度和长度：右图显示涂层缺陷的深度为343.11 μm，左图显示涂层缺陷长度为3.5 cm；(b)高表面能水性聚氨酯修复液可修复等离子体处理后的高表面能环氧树脂涂层(HSES)。右图可以看出，水性聚氨酯(高表面能液体)修复高表面能环氧树脂(HSES)，涂层缺陷的深度为106.66 μm；(c)高表面能水性聚氨酯修复液不能修复低表面能环氧树脂涂层(LSES)，涂层缺陷的在水性聚氨酯高低表面能(LSES)，深度为149.34 μm

(a) The depth length and length of the coating defect: the depth of the coating defect shown in the right is 343.11μm; the length of the coating defect shown in the left is 3.5cm; (b) High surface energy aqueous polyurethane repair solution can repair high surface energy epoxy resin coating (HSES) after plasma treatment. As can be seen in the figure on the right, waterborne polyurethane (high surface energy liquid) repaired high surface energy epoxy resin (HSES), and the depth of coating defect was 106.66 μm; (c) The high surface energy aqueous polyurethane repair solution could not repair the low surface energy epoxy resin coating (LSES), and the coating defect was high and low surface energy (LSES) of the aqueous polyurethane at a depth of 149.34 μm