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Method for preparing copper-base-oriented super-hydrophobic material

A super-hydrophobic, copper-based technology, which is applied to the surface coating liquid device, special surface, electrolysis process, etc., can solve the problems of inflexible application, long cycle, too fine equipment, etc.

Active Publication Date: 2014-07-02
嘉善县国创新能源研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, directional superhydrophobicity must have anisotropy in the micro-nano structure, which requires very high technology and has many disadvantages. For example, nano-engraving technology is commonly used now, the equipment is too fine, and the cycle is also very long.
However, the process of replicating directly from rice leaves has the disadvantage of single shape and cannot be applied flexibly.

Method used

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  • Method for preparing copper-base-oriented super-hydrophobic material
  • Method for preparing copper-base-oriented super-hydrophobic material
  • Method for preparing copper-base-oriented super-hydrophobic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Preparation of the precursor with needle-shaped (strip-shaped) depressions: the stainless steel wire ((sus-304wps, diameter: 50-79μm, manufacturer: Shanghai Anha Stainless Steel Co., Ltd.) was polished with sandpaper and then used hydrochloric acid and hydrofluoric acid Acid and water are slowly corroded in a mixed solution with a mass ratio of 28.1:2.2:69.7 until the diameter of the stainless steel wire is 40 μm (±5 μm). After cleaning with deionized water and drying, these stainless steel wires are evenly arranged in a 3cm×6cm×0.2cm The pure aluminum sheet (1060, manufacturer: Hangzhou Junwang Metal Products Co., Ltd.) cleaned with anhydrous ethanol, using a flat vulcanizing machine (QLB-25D / Q, manufacturer: Wuxi First Rubber Machinery Co., Ltd.) to apply a pressure of 100MPa, Hold the pressure for 60s, peel off the stainless steel wire to obtain a pressed pure aluminum sheet, put the pressed aluminum sheet in an etching reagent with a mass concentration of 40% hyd...

Embodiment 2

[0029] Preparation of the precursor with needle-shaped (strip-shaped) depressions: directly purchase a copper mesh with a wire diameter of 40 μm (100 mesh, manufacturer: Shijiazhuang Anhua Metal Wire Mesh Products Co., Ltd.). Wash with acetone and soak for 1 hour, after drying at 80°C, cover the copper mesh flatly on a 3cm×6cm×0.2cm pure aluminum sheet (1060, manufacturer: Hangzhou Junwang Metal Products Co., Ltd.) cleaned with acetone, and vulcanize with a flat plate Machine (QLB-25D / Q, manufacturer: Wuxi No. 1 Rubber Machinery Co., Ltd.) applies a pressure of 150MPa, keeps the pressure for 60s, and puts 20% hydrochloric acid aqueous solution and 20% hydrofluoric acid aqueous solution at a volume ratio of 1: 2 in the etching reagent for 30s to obtain a precursor with needle-like (strip-like) depressions.

[0030] Preparation of electroforming solution: CuSO 4 ·5H 2 O200g / L,H2 SO 4 40g / L, the surfactant is a mixture of sodium lauryl sulfate and polyethylene glycol, both of ...

Embodiment 3

[0033] Preparation of the precursor with needle-shaped (strip-shaped) depressions: directly purchase carbon fiber cloth with a diameter of 7 μm (mesh: 50-250 μm, manufacturer: Wuxi Heshengyuan Carbon Fiber Technology Co., Ltd.), wash with absolute ethanol and soak for 1h , after drying at 80°C, spread the carbon fiber cloth on the aluminum foil (model: 3303) cleaned in absolute ethanol, apply a pressure of 100MPa with a flat vulcanizer, press for 60s, peel off the template, and obtain the pressed aluminum sheet.

[0034] Prepare an etching reagent with a mass concentration of 10% hydrochloric acid aqueous solution and a mass concentration of 20% hydrofluoric acid aqueous solution at a volume ratio of 1:0.5. Soak the pressed aluminum sheet in an etching reagent for 50s to obtain a precursor with protrusions.

[0035] Preparation of electroforming solution: CuSO 4 ·5H 2 O100g / L,H 2 SO 4 20g / L, the surfactant is a mixture of sodium lauryl sulfate and cetyl ammonium bromide, b...

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Abstract

The invention discloses a method for preparing a copper-base-oriented super-hydrophobic material. The method comprises the following steps of: (1) taking needlelike metal wires or synthetic fibers as templates, arranging the templates on a pure aluminum sheet or a pure copper sheet, pressing for 50-100 s under a pressure of 20-200 MPa, placing into an etching reagent and immersing for 5-18 s after stripping the templates, and obtaining a precursor; (2) placing the precursor into an electroforming solution as a cathode, taking a copper plate as an anode, carrying out an electroforming replication operation at room temperature under the electrifying condition, and removing the precursor after finishing the replication operation, thereby obtaining a replicated product; and placing the replicated product into a silane coupling agent mixture solution, immersing for 1-2 h, curing 1-4 h at a temperature of 90-140 DEG C, and obtaining the copper-base-oriented super-hydrophobic material. The super-hydrophobic material disclosed by the invention has an oriented hydrophobic function and a capability of enabling water drops on the material surface to roll in an appointed direction as far as possible.

Description

(1) Technical field [0001] The invention relates to the technical field of superhydrophobic materials, in particular to a method for preparing a copper-based oriented superhydrophobic material. (2) Background technology [0002] Due to its special surface structure and low surface free energy, superhydrophobic materials can maintain a very small contact surface with water, thereby playing the role of moisture prevention, condensation, anti-fog, drag reduction, etc. These characteristics have been intuitively applied In the field of drying, self-cleaning, diversion and so on. Copper has good thermal conductivity and electrical conductivity, and superhydrophobic films prepared on the surface of copper and its alloys can have both thermal conductivity and hydrophobic properties, and are widely used in the fields of condensation equipment and microelectronic devices. However, in some special fields, it is necessary to have the function of directional and rapid hydrophobicity, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D1/00C25D1/10B05D5/08
Inventor 唐谊平郑国渠侯广亚曹华珍徐幸
Owner 嘉善县国创新能源研究院