Snow-dredging ridge rib-shaped microstructure imitating fargesia qinlingensis leaves

A microstructure and ribbed technology, applied in the field of material preparation, can solve the problem of not being able to effectively reduce the adhesion of snow

Pending Publication Date: 2022-07-08
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for snow protection, many studies at home and abroad have shown that super-hydrophobic and super-l

Method used

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  • Snow-dredging ridge rib-shaped microstructure imitating fargesia qinlingensis leaves
  • Snow-dredging ridge rib-shaped microstructure imitating fargesia qinlingensis leaves
  • Snow-dredging ridge rib-shaped microstructure imitating fargesia qinlingensis leaves

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] The substrate and microstructured surfaces are fabricated from aluminum and machined using a femtosecond laser. The first layer is a staggered slope structure composed of a ridge and rib-like periodic structure. The pitch of the ridge structures is 180 microns, the width of the ridge structures is 30 microns, the width of the rib structures is 20 microns, and the height difference of the ridge structures is 30 microns. structure. The second layer of papillary structure was simplified to a hemispherical structure with a diameter of 5 microns, covering the first layer of structure. The upper surface of the base material layer is a smooth surface.

[0022] Snow removal performance test

[0023] A comparative test of snow adhesion strength was carried out for the epoxy resin material with the ridge rib-like microstructure of imitating Qinling arrow bamboo leaves prepared in Example 1. The air-floating snow adhesion measuring device was used to measure the snow adhesion ...

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Abstract

The invention discloses an imitated fargesia qinlingensis leaf surface ridge-rib-shaped micro-nano structure which can play a role in dredging snow and preventing snow, and belongs to the field of material preparation. The ridge-rib-shaped microstructure imitating the fargesia qinlingensis leaves comprises a ridge-rib-shaped microstructure (a) and a mastoid-process-shaped microstructure (b). The whole ridge-rib-shaped microstructure (a) is periodically distributed in the longitudinal direction, and each period is formed by arranging longitudinal ridge-shaped structures and transverse rib-shaped structures in a staggered mode; the ridge-shaped structure presents a ''low-high-low'' trend in each period, and the lowest part is the ridge-shaped structure; and the highest point; the four sides of each square are slightly higher, and the center of each square is sunken; a slope micro-concave structure formed by combining ridge-rib-shaped structures forms a first layer microstructure, namely a ridge-rib-shaped microstructure (a), of the snow dredging surface of the imitated fargesia qinlingensis leaves; and the mastoid microstructure (b) is uniformly distributed on the surface of the whole ridge rib microstructure (a) and is a second-layer structure. The snow dredging mechanism of the surface of the microstructure is analyzed in detail, and instance data prove that the surface of the microstructure can remarkably reduce the snow adhesion strength.

Description

technical field [0001] The invention relates to a ridge rib-shaped micro-nano structure on the surface of an arrow bamboo leaf imitating Qinling Mountains, which can play the role of removing snow and preventing snow, and belongs to the field of material preparation. Background technique [0002] Snow, as a common climatic phenomenon in nature, often appears in human works of art. A moderate amount of snowfall helps to protect crops from cold in winter, but long-term snow cover in high latitudes will seriously affect human production and life. For example, solar photovoltaic panels in high-altitude areas, once covered with snow for a long time, their light energy conversion efficiency will drop significantly; for common light steel structure houses, excessive snow accumulation on the roof will cause the house to be overloaded. The snowfall is accompanied by strong winds, and the uneven distribution of snow on the roof leads to local instability of the structure, which cause...

Claims

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Application Information

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IPC IPC(8): B81B1/00B81C1/00
CPCB81B1/006B81C1/00111B81C1/00126Y02P60/12
Inventor 何洋燕则翔许晓慧周子丹郭磊石小鑫苑伟政
Owner NORTHWESTERN POLYTECHNICAL UNIV
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