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A copper-based superhydrophobic composite film with low friction coefficient and preparation method thereof

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

Active Publication Date: 2015-07-29
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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  • A copper-based superhydrophobic composite film with low friction coefficient and preparation method thereof
  • A copper-based superhydrophobic composite film with low friction coefficient and preparation method thereof
  • A copper-based superhydrophobic composite film with low friction coefficient and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Take the copper sheet (produced by Sinopharm Group) with a thickness of 0.15~0.20mm and a purity of 99.99% as the copper-based material, with 1mol·L -1 The nitric acid is deoxidized film treatment, then washed with deionized water, dried with nitrogen, and set aside.

[0033] (2) Wash the copper sheet treated in step (1) with deionized water, and then soak it in 4mol·L at 10℃ -1 Perform in-situ oxidation reaction in 1d sodium hydroxide solution to obtain a solid surface with micron-sized cuprous oxide crystal structure;

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

[0035] (4) Put the copper sheet with the composite structure of micron-level cuprous oxide crystals and sub-micron-level metallic silver particles on...

Embodiment 2

[0038] (1) Take the copper sheet (produced by Sinopharm Group) with a thickness of 0.15~0.20mm and a purity of 99.99% as a copper-based material, with 1mol·L -1 Deoxidize the nitric acid film for 10 seconds, then wash with deionized water, blow dry with nitrogen, and set aside.

[0039] (2) Wash the copper sheet treated in step (1) with deionized water, and then soak in 2mol·L at 23℃ -1 2d in-situ oxidation reaction in the sodium hydroxide solution to obtain a solid surface with micron-sized cuprous oxide crystal structure;

[0040] (3) Soak the copper sheet treated in step (2) in 0.001mol·L at 23℃ -1 In the silver nitrate solution for 1 hour, wash with deionized water to obtain a copper sheet with a rough surface and a composite structure of micron-level cuprous oxide crystals and sub-micron-level metallic silver particles;

[0041] (4) Put the copper sheet with the composite structure of micron-level cuprous oxide crystals and sub-micron level metallic silver particles on the surfac...

Embodiment 3

[0044] (1) Take the copper sheet (produced by Sinopharm Group) with a thickness of 0.15~0.20mm and a purity of 99.99% as the copper-based material, with 1mol·L -1 Deoxidize the nitric acid film for 10 seconds, then wash with deionized water, blow dry with nitrogen, and set aside.

[0045] (2) Wash the copper sheet treated in step (1) with deionized water, and then soak it in 1mol·L at 35℃ -1 3d in-situ oxidation reaction in the sodium hydroxide solution to obtain a solid surface with micron-sized cuprous oxide crystal structure;

[0046] (3) Soak the copper sheet treated in step (2) in 0.00025mol·L at 35℃ -1 In the silver nitrate solution for 1 hour, wash with deionized water to obtain a copper sheet with a rough surface and a composite structure of micron-level cuprous oxide crystals and sub-micron-level metallic silver particles;

[0047] (4) Put the copper sheet with the composite structure of micron-level cuprous oxide crystals and sub-micron-level metallic silver particles on the...

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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 specifically relates to a copper-based superhydrophobic composite film with low friction coefficient and a preparation method thereof. Background technique [0002] In recent years, due to its unique properties, super-hydrophobic surfaces have shown good application prospects in basic research and industrial applications, and thus have received extensive attention. During the use of metal, it consumes huge amounts of corrosion, friction and wear. Since superhydrophobic surfaces can provide useful ideas for metal anti-corrosion and metal anti-wear and anti-wear aspects, 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. Cons...

Claims

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Application Information

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Patent Type & Authority Patents(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