聚四氟乙烯对风电叶片聚氨酯涂层耐磨与耐雨蚀性能影响及损伤机制研究

郑子龙, 孙海静, 薛伟海, 陈国亮, 周欣, 王进军, 段德莉, 孙杰

Effects and Damage Mechanisms of Polytetrafluoroethylene on Wear and Rain Erosion Resistance of Polyurethane Coatings for Wind Turbine Blades

ZHENG Zilong, SUN Haijing, XUE Weihai, CHEN Guoliang, ZHOU Xin, WANG Jinjun, DUAN Deli, SUN Jie

表3 不同PTFE含量的PU涂层的性能检测结果

Table 3 Performance test results of PU coatings with different contents of PTFE

Coating properties PTFE content / % Test results 0 1 2 3 5 Gloss (60°) / % 21.5 22.3 22.8 23.5 24.2 Qualified Pencil hardness 4H 4H 4H 4H 4H Qualified Adhesion / level 0 0 0 0 0 Qualified Impact resistance / kg·cm 100 100 90 90 85 Qualified Flexibility / mm 0.5 0.5 1 1 1 Qualified Wear resistance / [(CS10, 1000 g/1000 r)] mg 15 14 13 10 7 Qualified Elongation at break / % 20.7 21.3 22.5 24.8 27.2 Qualified Tensile strength / MPa 5.4 5.2 5.1 4.5 4.0 Qualified Water resistance / 7 d Unchanged Unchanged Unchanged Unchanged Unchanged Qualified Acid resistance / (0.05 mol/L H2SO4) 7 d Unchanged Unchanged Unchanged Unchanged Unchanged Qualified Alkali resistance / (0.1 mol/L NaOH) 7 d Unchanged Unchanged Unchanged Unchanged Unchanged Qualified