Copper-based super-hydrophobic composite film with low friction coefficient and preparation method thereof

A low friction coefficient and composite thin film technology, applied in chemical instruments and methods, superimposed layer plating, liquid chemical plating, etc., can solve problems such as easy damage, failure to achieve super-hydrophobic performance, and poor carrying capacity of the film. Achieve the effect of improving static contact angle, good super-hydrophobic performance, and reducing rolling angle

Active Publication Date: 2013-12-18
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two processes are relatively simple, but the resulting film has poor bearing capacity and is easily damaged
In 2012, Wang Zhongqian, Wan Yong et al. (Journal of Tribology, Vol. 32, No. 1, 53-58) used a copper sheet as a substrate to build a cuprous oxide micro-nano structure on the surface of the copper sheet under the action of sodium hydroxide. Then cover the stearic acid film, which has good anti-friction and anti-wear properties, but the contact angle to water is less than 150°, which does not reach super-hydrophobic properties

Method used

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  • Copper-based super-hydrophobic composite film with low friction coefficient and preparation method thereof
  • Copper-based super-hydrophobic composite film with low friction coefficient and preparation method thereof
  • Copper-based super-hydrophobic composite film with low friction coefficient and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Take copper flakes (produced by Sinopharm Group) with a thickness of 0.15-0.20mm and a purity of 99.99% as the copper-based material, and use 1mol L -1 Nitric acid was used for deoxidation film treatment, then washed with deionized water, dried with nitrogen gas, and set aside.

[0033] (2) Wash the copper sheet treated in step (1) with deionized water, and then soak it in 4mol·L -1 Carry out in-situ oxidation reaction in the sodium hydroxide solution 1d, obtain the solid surface with micron-order cuprous oxide crystal structure;

[0034] (3) Soak the copper sheet treated in step (2) in 0.0001mol L at 10°C -1 in the silver nitrate solution for 10 hours, and cleaned with deionized water to obtain a copper sheet with a rough surface and a composite structure of micron-sized cuprous oxide crystals and submicron-sized metallic silver particles;

[0035] (4) The copper sheet with a composite structure of micron-sized cuprous oxide crystals and submicron-sized metal sil...

Embodiment 2

[0038] (1) Take copper flakes (produced by Sinopharm Group) with a thickness of 0.15-0.20mm and a purity of 99.99% as the copper-based material, and use 1mol L -1 Nitric acid was used for deoxidation film treatment for 10s, then washed with deionized water, dried with nitrogen gas, and set aside.

[0039] (2) Wash the copper sheet treated in step (1) with deionized water, and then soak it in 2mol·L -1 2d in-situ oxidation reaction in the sodium hydroxide solution to obtain a solid surface with a micron-sized cuprous oxide crystal structure;

[0040] (3) Soak the copper sheet treated in step (2) in 0.001mol L at 23°C -1 in the silver nitrate solution for 1 h, and cleaned with deionized water to obtain a copper sheet with a rough surface and a composite structure of micron-sized cuprous oxide crystals and submicron-sized metallic silver particles;

[0041] (4) The copper sheet with the composite structure of micron-sized cuprous oxide crystals and sub-micron-sized metal silver...

Embodiment 3

[0044] (1) Take copper flakes (produced by Sinopharm Group) with a thickness of 0.15-0.20mm and a purity of 99.99% as the copper-based material, and use 1mol L -1 Nitric acid was used for deoxidation film treatment for 10s, then washed with deionized water, dried with nitrogen gas, and set aside.

[0045] (2) Wash the copper sheet treated in step (1) with deionized water, and then soak it in 1mol·L -1 3d in-situ oxidation reaction in the sodium hydroxide solution to obtain a solid surface with a micron-sized cuprous oxide crystal structure;

[0046] (3) Soak the copper sheet treated in step (2) in 0.00025mol L at 35°C -1 in the silver nitrate solution for 1 h, and cleaned with deionized water to obtain a copper sheet with a rough surface and a composite structure of micron-sized cuprous oxide crystals and submicron-sized metallic silver particles;

[0047] (4) The copper sheet with a composite structure of micron-sized cuprous oxide crystals and submicron-sized metal silver ...

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Abstract

The invention belongs to the field of preparation of micro or/and nano-structures on surfaces of solids and specifically relates to a copper-based super-hydrophobic composite film with a low friction coefficient and a preparation method thereof. The copper-based super-hydrophobic composite film with the low friction coefficient is characterized in that a composite structure with a micro-scale cuprous oxide crystal structure and submicro-scale metal silver particles is firstly formed on the surface of a copper-based material, and then surface chemical modification is performed to obtain a product. Each contact angle between the copper-based super-hydrophobic composite film with the low friction coefficient and water exceeds 150 degrees, the friction coefficient is low (can be as low as about 0.1) and can be stably kept, and the copper-based super-hydrophobic composite film has good super-hydrophobic performance and relatively low friction coefficient.

Description

technical field [0001] The invention belongs to the field of preparing micron or / and nanostructures on solid surfaces, and in particular relates to a copper-based super-hydrophobic composite film with a low coefficient of friction and a preparation method thereof. Background technique [0002] In recent years, superhydrophobic surfaces have attracted widespread attention because of their unique properties and promising prospects in basic research and industrial applications. During the use of metal, it consumes a lot due to corrosion, friction and wear. Since the superhydrophobic surface can provide useful ideas for metal anti-corrosion and metal wear reduction and anti-wear, it is particularly important to research and develop a metal-based superhydrophobic surface with good tribological properties and its preparation method. [0003] As an important engineering material, metallic copper plays an important role in people's daily life and industrial production. Constructin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/04C23C22/63C23C18/42C23C28/00
Inventor 陈新华李佩佩张万强李凌乐侯珂珂郭丽丽武小满张平余
Owner XUCHANG UNIV
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