工程科学学报，第40卷，第7期：864-870,2018年7月 Chinese Journal of Engineering,Vol.40,No.7:864-870,July 2018 DOI:10.13374/j.issn2095-9389.2018.07.013;http://journals.ustb.edu.cn 氟化改性硅树脂制备的超疏水涂层防覆冰性能 翟广坤)区，李曙林)，陈素素2)，尚柏林) 1)空军工程大学航空工程学院，西安7100382)山东大学材料科学与工程学院，济南250000 ☒通信作者，E-mail:1012153869@q9-com 摘要研究具有超疏水表面特性的疏水涂层实际防覆冰效果.首先理论分析了水滴在固体表面浸润性影响因素，利用不同 硅烷水解缩合反应制备出低表面能的含氟硅树脂，之后引入分形理论在含氟硅树脂中添加二氧化硅微粒制备疏水涂层.观察 掺杂微粒的涂层表面微观结构，并测试水滴在不同涂层表面的接触角：为直观分析涂层防覆冰效果，将不同涂层涂覆试验件 后在结冰风洞中进行覆冰测试。结果显示掺混不同量级微粒的疏水涂层表面形成复合粗糙结构，有着更好的粗糙度：含氟硅 树脂表面水滴接触角较普通硅树脂提升10°，含有不同量级粒径微粒的涂层表面水滴接触角较单一粒径微粒掺混的涂层提升 近20°，达到超硫水表面效果：具有复合微观结构的疏水涂层涂覆的试验件在5m·s1和15m·s1的风速下较无涂层表面覆冰 减少率分别达到35.6%和25.9%，较只有一级粗糙结构的表面有效防覆冰时间长，具有较好的防覆冰能力.结果表明本文设 计的超疏水涂层达到超疏水表面效果，且具有较好的防覆冰性能 关键词硅树脂：氟化：超疏水：分形：接触角：防覆冰 分类号V255.1 Anti-icing performance of superhydrophobic coating prepared by modified fluorinated silicone ZHAI Guang-kun LI Shu-lin),CHEN Su-su2),SHANG Bo-lin') 1)Aeronautics Engineering College,Air Force Engineering University,Xi'an 710038,China 2)School of Material Science Engineering,Shandong University,Jinan 250000,China Corresponding author,E-mail:1012153869@qq.com ABSTRACT This paper investigates the anti-icing effect of hydrophobic coating,which has similar characteristics with a superhydro- phobic surface.First,the factors affecting the wettability of water droplets on a solid surface were theoretically analyzed.Using hydro- lytic condensation reaction,low-surface-energy materials were prepared based on a modified vulcanized silicone resin.Different sizes of silica particles were added in a fluorinated silicone resin to prepare the superhydrophobic coatings,considering the fractal theory.In the coating test characterization phase,the microstructure of the particles-doped coating surface and the contact angle of water droplets on different coating surfaces were investigated and analyzed.To visually analyze the effect of coating anti-icing property,icing tests were carried out in an icing wind tunnel after coating the test pieces by different coatings.The results show that the surface of the hydropho- bic coating mixed with particles of different sizes forms a composite microstructure,which has a better roughness.The contact angle test result shows that the contact angle of water droplets on the fluorinated silicone resin-coated surface is 10 higher than that on the ordina- ry silicone resin-coated surface,and increases by nearly 20 in the coating with different particle sizes compared with the uniformly sized particles coating,thus achieving a superhydrophobic surface effect.The different coated test pieces were set in an icing wind tun- nel to test their anti-icing abilities,and the results indicate that the superhydrophobic coating with a fractal structure after being cured does not only have a lower icing weight,which is reduced by 35.6%and 25.9%at the wind speed of 5msand 15ms,respec- 收稿日期：2017-12-11 基金项目：国家自然科学基金资助项目(71501185)工程科学学报,第 40 卷,第 7 期:864鄄鄄870,2018 年 7 月 Chinese Journal of Engineering, Vol. 40, No. 7: 864鄄鄄870, July 2018 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 07. 013; http: / / journals. ustb. edu. cn 氟化改性硅树脂制备的超疏水涂层防覆冰性能 翟广坤1) 苣 , 李曙林1) , 陈素素2) , 尚柏林1) 1) 空军工程大学航空工程学院, 西安 710038 2) 山东大学材料科学与工程学院, 济南 250000 苣通信作者, E鄄mail:1012153869@ qq. com 摘 要 研究具有超疏水表面特性的疏水涂层实际防覆冰效果. 首先理论分析了水滴在固体表面浸润性影响因素,利用不同 硅烷水解缩合反应制备出低表面能的含氟硅树脂,之后引入分形理论在含氟硅树脂中添加二氧化硅微粒制备疏水涂层. 观察 掺杂微粒的涂层表面微观结构,并测试水滴在不同涂层表面的接触角;为直观分析涂层防覆冰效果,将不同涂层涂覆试验件 后在结冰风洞中进行覆冰测试. 结果显示掺混不同量级微粒的疏水涂层表面形成复合粗糙结构,有着更好的粗糙度;含氟硅 树脂表面水滴接触角较普通硅树脂提升 10毅,含有不同量级粒径微粒的涂层表面水滴接触角较单一粒径微粒掺混的涂层提升 近 20毅,达到超疏水表面效果;具有复合微观结构的疏水涂层涂覆的试验件在 5 m·s - 1和 15 m·s - 1的风速下较无涂层表面覆冰 减少率分别达到 35郾 6% 和 25郾 9% ,较只有一级粗糙结构的表面有效防覆冰时间长,具有较好的防覆冰能力. 结果表明本文设 计的超疏水涂层达到超疏水表面效果,且具有较好的防覆冰性能. 关键词 硅树脂; 氟化; 超疏水; 分形; 接触角; 防覆冰 分类号 V255郾 1 收稿日期: 2017鄄鄄12鄄鄄11 基金项目: 国家自然科学基金资助项目(71501185) Anti鄄icing performance of superhydrophobic coating prepared by modified fluorinated silicone ZHAI Guang鄄kun 1) 苣 , LI Shu鄄lin 1) , CHEN Su鄄su 2) , SHANG Bo鄄lin 1) 1) Aeronautics Engineering College, Air Force Engineering University, Xi蒺an 710038, China 2) School of Material Science & Engineering, Shandong University, Jinan 250000, China 苣Corresponding author, E鄄mail: 1012153869@ qq. com ABSTRACT This paper investigates the anti鄄icing effect of hydrophobic coating, which has similar characteristics with a superhydro鄄 phobic surface. First, the factors affecting the wettability of water droplets on a solid surface were theoretically analyzed. Using hydro鄄 lytic condensation reaction, low鄄surface鄄energy materials were prepared based on a modified vulcanized silicone resin. Different sizes of silica particles were added in a fluorinated silicone resin to prepare the superhydrophobic coatings, considering the fractal theory. In the coating test characterization phase, the microstructure of the particles鄄doped coating surface and the contact angle of water droplets on different coating surfaces were investigated and analyzed. To visually analyze the effect of coating anti鄄icing property, icing tests were carried out in an icing wind tunnel after coating the test pieces by different coatings. The results show that the surface of the hydropho鄄 bic coating mixed with particles of different sizes forms a composite microstructure, which has a better roughness. The contact angle test result shows that the contact angle of water droplets on the fluorinated silicone resin鄄coated surface is 10毅 higher than that on the ordina鄄 ry silicone resin鄄coated surface, and increases by nearly 20毅 in the coating with different particle sizes compared with the uniformly sized particles coating, thus achieving a superhydrophobic surface effect. The different coated test pieces were set in an icing wind tun鄄 nel to test their anti鄄icing abilities, and the results indicate that the superhydrophobic coating with a fractal structure after being cured does not only have a lower icing weight, which is reduced by 35郾 6% and 25郾 9% at the wind speed of 5 m·s - 1 and 15 m·s - 1 , respec鄄