The invention discloses a bionic polygon prism texture drag reduction surface and a preparation method thereof, and belongs to the technical field of structural bionic materials. The drag reduction surface is prepared by taking a polygonal scale structure of a yellow belly sea snake epidermis as a model, selecting a flexible polymer as a base material to construct a texture surface and adopting a surface hydrophilic modification technology. The flexible polymer reduces resistance by delaying transition of the layer to turbulent flow. An analogue simulation result shows that when fluid flows through the grooves between the textures, vortexes can be generated, sliding friction between the fluid and the surface is converted into rolling friction, and resistance is greatly reduced. In addition, the hydrophilic polymer can interact with water to form a hydration layer to weaken the frictional resistance effect. According to the invention, not only is the bionic polygon prism texture drag reduction surface prepared, but also the drag reduction principle and new application of the polygon prism texture surface are explored. The resistance reduction method is green and pollution-free, can efficiently reduce the resistance of the marine navigation equipment in an energy-saving manner, and has a wide application prospect and a very high economic value.
本发明公开了一种仿生型多棱柱织构减阻表面及其制备方法,属于结构仿生材料技术领域。该减阻表面以黄腹海蛇表皮的多边形鳞片结构为模型,选用柔性聚合物为基材构建织构表面,并通过表面亲水改性技术制备而成。柔性聚合物通过延缓层流向湍流的转捩减少阻力。仿真模拟结果显示,流体流经织构间的沟槽时会产生涡旋,将流体与表面之间的滑动摩擦转换为滚动摩擦,极大地减少阻力。此外,亲水聚合物可以与水相互作用形成水化层削弱摩擦阻力作用。此发明不仅制备了一种仿生型多棱柱织构减阻表面,还探索了多棱柱织构表面减阻的原理和新用途。该减阻方法绿色无污染,可节能高效的减少海洋航行设备的阻力,具有广阔的应用前景和很高的经济价值。
Bionic polygon prism texture anti-drag surface and preparation method thereof
一种仿生型多棱柱织构减阻表面及其制备方法
2024-10-22
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B64C AEROPLANES , Flugzeuge / C08J Verarbeitung , WORKING-UP / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
Antifouling anti-drag bionic skin and preparation method thereof
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