光热超疏水表面的制备及防除冰性能研究
Preparation of Superhydrophobic Surface with Photothermal Absorption Capacity and Study on Anti-Icing/Deicing Performance
向科峰 1郭成红 1宋岳干 2李国强 1杨益 1卓礼杰1
作者信息
- 1. 西南科技大学制造科学与工程学院,四川绵阳 621010
- 2. 西南科技大学制造科学与工程学院,四川绵阳 621010;西南科技大学四川天府新区创新研究院,四川成都 621010
- 折叠
摘要
防除冰技术对于减少冰冻灾害造成的经济损失及人员伤亡具有重要意义.其中光热除冰技术由于节能环保的优势,受到防除冰领域的广泛关注.然而,在航空航天和风力发电等实际应用中,由于制备难度大、光热效率低等因素,光热除冰表面的发展仍然受到限制.受昆虫复眼形状启发,通过飞秒激光修饰处理铝合金板,制备一种具有优异光热性能的超黑光热阱结构表面.通过高深度(≥50 μm)凹坑阵列结构促使光线在结构内部多次反射,有效提升了结构表面光热吸收能力.试验结果显示,在一个标准强度的太阳光照射下,结构表面5 min内可从25 ℃升温到60.1 ℃,温度上升幅度高达35.1 ℃.此外,经氟化改性后可储存气穴的凹坑阵列结构表面结霜结冰时间相比裸铝表面延迟40 min以上,且表面优异的超疏水性可使融化后的冰水快速滑落.与传统光热除冰技术相比,这种通过飞秒激光构建微结构而无须复合光热材料的策略,为光热防/除冰表面的制备提供了新思路.
Abstract
Anti-icing technology is of great significance to reduce the economic losses and casualties caused by freezing disas-ters.With its advantages of energy saving and environmental protection,photothermal de-icing technology has received exten-sive attention in the field of anti-icing.However,in practical applications such as aerospace and wind power generation,the de-velopment of photothermal deicing surfaces is still limited due to factors such as difficult preparation and low photothermal effi-ciency.Inspired by the shape of the compound eye of insects,an ultra-black light heat trap structure surface with excellent pho-tothermal performance was prepared by femtosecond laser modification of aluminum alloy plate.The high depth(≥50 μm)pit array structure allowed light to be refracted multiple times inside the structure,which effectively improved the light and heat absorption capacity of the structural surface.The experimental results show that under a standard intensity of sunlight,the surface of the structure can be heated from 25 ℃ to 60.1 ℃ in 5 minutes,representing a remarkable temperature increase of up to 35.1 ℃.In addition,after fluorination modification,the frosting and freezing time of the pit array structure that can store air pockets delay of over 40 minutes when compared to the surface of bare aluminum,and the excellent superhydrophobicity of the surface can make the melted ice water slide off quickly.Compared with traditional photothermal de-icing technology,this strategy of constructing microstructures by femtosecond laser without composite photothermal materials provides a new idea for the preparation of photothermal anti-icing/deicing surfaces.
关键词
激光器/仿生/光热吸收/超疏水/防/除冰Key words
lasers/bionic/light and heat absorption/superhydrophobic/anti-icing/deicing引用本文复制引用
基金项目
结冰与防除冰重点实验室开放基金(IADL20210408)
出版年
2024
NETL
NSTL
万方数据