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摘要
结霜会降低风机叶片的工作效率,超疏水表面可以有效地抑制霜层的形成。基于绿色环保的理念,利用十六烷基三甲氧基硅烷对纳米二氧化硅进行改性,引入聚二甲基硅氧烷进一步降低表面能,采用一步喷涂的方式在紫铜板上制备了无氟超疏水表面,研究了不同冷面温度及环境湿度条件下,超疏水表面的抑霜性能,包括完全冻结时间及霜层厚度。针对海上风机叶片会受到盐雾的影响,探讨了不同含量盐水液滴的冻结情况。结果表明:超疏水表面的接触角达到了153.4°;在相同的环境下,超疏水表面相较于紫铜板表面凝结液滴冻结更慢,霜层高度更低;超疏水表面可以有效地延缓盐水液滴的冻结。
Abstract
Frost formation reduces the operational efficiency of wind turbine blades,whereas superhydrophobic surface can effectively hinder the formation of frost layers.Guided by the principle of green environmental protection,cetyltrimethoxysilane was employed to modify silica,followed by the incorporation of polydimethylsiloxane to further decrease the surface energy.Subsequently,a fluorine-free superhydrophobic surface was fabricated on copper plates through a one-step spraying process.The anti-frosting performance of the superhydrophobic surface under different cold surface temperatures and ambient humidity conditions,including complete freezing time and frost layer thickness,was studied.Aiming at the influence of offshore wind turbine blades by salt spray,the freezing situation of brine droplets with different contents was discussed.The results showed that the contact angle of superhydrophobic surface reached 153.4°.Under the same environment conditions,the condensed droplets on the superhydrophobic surface froze more slowly and the height of the frost layer was lower than that on the copper plate surface.The superhydrophobic surfaces could effectively delay the freezing of saline droplets.
关键词
超疏水表面
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抑霜
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盐水冻结
Key words
superhydrophobic surface
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anti-frosting
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brine freezing
超疏水表面的制备及其抑霜性能研究[J].
化工新型材料, 2026, 54(3): 199-203 DOI:10.19817/j.cnki.issn1006-3536.2026.03.005
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基金资助
国家自然科学基金(52476227)
