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Manufacturing method and application of anti-icing surface with concave micro-nano dual-level structure

A manufacturing method, a two-stage technology, applied in the direction of manufacturing tools, chemical instruments and methods, sustainable manufacturing/processing, etc., to achieve the effect of strong flexibility, broad application prospects, and low-cost manufacturing

Active Publication Date: 2022-02-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a high-efficiency and low-cost technology to manufacture polymer products with micro-nano dual-level structure surface by template method, but the micro-nano dual-level structure on the surface of polymer products currently manufactured is mostly convex structure

Method used

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  • Manufacturing method and application of anti-icing surface with concave micro-nano dual-level structure
  • Manufacturing method and application of anti-icing surface with concave micro-nano dual-level structure
  • Manufacturing method and application of anti-icing surface with concave micro-nano dual-level structure

Examples

Experimental program
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Effect test

Embodiment 1

[0036] In this embodiment, a method for manufacturing an anti-icing surface with a concave micro-nano dual-level structure includes the following steps.

[0037] (1) Use precision milling technology to form a pyramid micron-scale structure on the surface of beryllium copper alloy. The size of the bottom of each pyramid is 57 μm × 57 μm, the height is 50 μm, and the center-to-center distance between two adjacent pyramids is 57 μm (such as figure 1 shown).

[0038] (2) Place the prepared pyramid micron-scale structure template in a beaker, add a mixed solution of 2.5mol / L potassium hydroxide and 0.065mol / L potassium persulfate, place the beaker in a 60°C environment and heat it in a water bath for 60min. The surface of the micron-scale structure forms a nano-scale sheet structure (such as figure 1 shown).

[0039] (3) The prepared pyramid micro-nano double-level structure template is embedded on the fixed mold 1 of the injection mold ( Figure 2a ), heat the injection mold to...

Embodiment 2

[0046] In this embodiment, a method for manufacturing an anti-icing surface with a concave micro-nano dual-level structure includes the same steps as in Embodiment 1, except that the size of the bottom of each pyramid on the surface of the beryllium-copper alloy template is 34 μm×22 μm, The height is 30 μm, and the center-to-center distance between two adjacent pyramids is 34 μm. The mold heating temperature during the injection molding process was 100°C.

[0047] Figure 8 Shown is the scanning electron micrograph of the surface of the inverted pyramid micro-nano dual-stage structure polypropylene product 5 of this embodiment. The top size of each inverted pyramid is 34 μm × 22 μm, the depth is 30 μm, and the center-to-center distance between two adjacent inverted pyramids is 34 μm. The diameter of each nanoscale needle-like structure is about 40 nm.

[0048] The freezing time, ice adhesion strength and impact of low-temperature droplet were tested on the surface of polypr...

Embodiment 3

[0050] In this embodiment, a method for manufacturing an anti-icing surface with a concave micro-nano dual-level structure includes the same steps as in Example 1, except that the pyramidal micro-nano dual-level structure template material is pure copper, and the chemical deposition process is 50 °C in a water bath for 50 min.

[0051] The freezing time, ice adhesion strength and impact of low-temperature droplet were tested on the surface of polypropylene product 5.

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Abstract

The invention relates to a method for manufacturing an anti-icing surface with a concave micro-nano dual-level structure, comprising the following steps: using precision milling technology to form a raised micron-scale structure on the material surface; chemically depositing on the surface of the raised micron-level structure Form a nanoscale sheet structure; fix the micro-nano dual-level structure template on the cavity surface of the injection mold, and use injection molding technology to manufacture polymer products with a concave micro-nano dual-level structure on the surface. It also relates to the application of the manufacturing method of the anti-icing surface with the concave micro-nano double-level structure. The concave micro-nano dual-level structure on the surface of the polymer product can effectively prolong the freezing time of the droplet, reduce the ice adhesion strength, and at the same time facilitate the rebound of the droplet from the low-temperature polymer surface, so the surface of the polymer product presents a high static state. and dynamic superhydrophobic properties, it can be used as an effective material in the field of anti-icing.

Description

technical field [0001] The invention relates to the field of functional surface engineering, in particular to a manufacturing method and application of anti-icing polymer products with a concave micro-nano dual-level structure. Background technique [0002] Icing is a common phenomenon in nature. In severe cases, it will affect or even cause disasters such as aviation, transportation, power transmission, infrastructure and energy systems. Anti-icing methods can be divided into two categories: active deicing and passive anti-icing. Traditional active deicing methods mainly include thermal melting, mechanical deicing and natural deicing, which generally consume a lot of energy; passive anti-icing is an anti-icing strategy with low cost and energy consumption. The anti-icing performance of materials generally needs to meet the following three aspects: the rebound of droplets on the frozen surface, delaying the formation of surface ice crystals, and reducing the surface ice adh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/00B29C45/37B29C33/42B23C3/13B23P15/24C09K3/18
CPCB29C45/00B29C45/37B29C33/42B23C3/13B23P15/24C09K3/18Y02P20/10
Inventor 黄汉雄古润祺
Owner SOUTH CHINA UNIV OF TECH