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Graphene steel composite material, preparation method and applications thereof

A composite material and graphene technology, applied in chemical instruments and methods, skates, sports accessories, etc., can solve problems such as poor mechanical properties such as toughness, hardness, and bending resistance, low structural precision, and short service life. , to achieve the effect of reducing the difficulty of dispersion, improving mechanical properties and improving performance

Active Publication Date: 2019-08-16
北京石墨烯技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing skate brackets are usually made of carbon steel and stainless steel, with low structural precision, poor mechanical properties such as toughness, hardness, and bending resistance, etc., resulting in short service life and poor performance.

Method used

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  • Graphene steel composite material, preparation method and applications thereof
  • Graphene steel composite material, preparation method and applications thereof
  • Graphene steel composite material, preparation method and applications thereof

Examples

Experimental program
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preparation example Construction

[0039] The embodiment of the present invention also provides a preparation method of a graphene steel composite material, comprising:

[0040] S10, provide multiple steel plates;

[0041] S20, providing a graphene dispersion liquid, comprising a graphene sheet dispersant and a graphene sheet dispersed in the dispersion liquid;

[0042] S30, stacking the steel plates and the graphene dispersion alternately, so that the graphene dispersion is sandwiched between two adjacent steel plates to form a sandwich structure, the uppermost layer and the lowermost layer of the sandwich structure is the steel plate;

[0043] S40, performing pressurized pretreatment on the sandwich structure; and

[0044] S50, sintering the sandwich structure after the pressure pretreatment at 900°C to 1100°C

[0045] In the preparation of the graphene-steel composite material of the present invention in the embodiment of the present invention, the graphene layer and the steel layer are combined by pressuri...

Embodiment 1

[0059] A steel plate with a thickness of 2-10 mm is rolled to a thickness of 0.4 mm, and subjected to stress relief annealing at 650-700° C., wherein the carbon content of the steel plate used is 0.5% carbon steel.

[0060] The annealed steel plate is mechanically ground to a thickness of 0.3mm, and the roughness is at Ra0.8.

[0061] Electrolytic polishing was carried out on the steel plate after mechanical grinding, the polishing temperature was 70°C, and the current density was 70A·dm -2 , electrolysis time 6min. The electrolyte composition is phosphoric acid 650ml / L, sulfuric acid 150ml / L, water 150ml / L, chromium trioxide 50g / L. After electropolishing, the steel plates were rinsed with deionized water.

[0062] The mixed solution of graphene sheets, polyvinylpyrrolidone, and dimethylformamide was ultrasonicated for 80 minutes to obtain a graphene dispersion. The concentration of the graphene sheet in the graphene dispersion liquid is 7 mg / L, the diameter of the graphene...

Embodiment 2

[0068] Example 2 is basically the same as Example 1, except that the thickness of graphene dispersion coating or screen printing is 5 μm.

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Abstract

The present invention discloses a graphene steel composite material, which comprises steel layers and graphene layers, wherein the steel layers and the graphene layers are alternately stacked, the uppermost layer and the lowermost layer of the graphene steel composite material in a stacked direction are the steel layers, and the two adjacent steel layers are separated by one graphene layer. The invention further discloses a preparation method of the graphene steel composite material, wherein the preparation method comprises: providing a plurality of steel plates; providing a graphene dispersion liquid, wherein the graphene dispersion liquid comprises a graphene sheet dispersion agent and graphene sheets dispersed in the dispersion liquid; alternately stacking the steel plates and the graphene dispersion liquid to sandwich the graphene dispersion liquid between the two adjacent steel plates to form a sandwich structure, wherein the uppermost layer and the lowermost layer of the sandwichstructure are the steel plates; carrying out pressurizing pre-treatment on the sandwich structure; and sintering the pre-treated sandwich structure at a temperature of 900-1100 DEG C. The invention further discloses applications of the graphene steel composite material.

Description

technical field [0001] The invention relates to the field of special tools, in particular to a graphene steel composite material and its preparation method and application. Background technique [0002] Ice skating is becoming more and more popular. Ice skates are the most important equipment for skating. The accuracy, performance, weight and reliability of the entire ice skate equipment play a huge role in skating. Speed ​​skating shoes are generally composed of three parts: the skate blade, the blade tube and the skates. The skate blade is in direct contact with the ice surface, and the blade tube is connected to the blade and the skate. and performance impact is huge. [0003] However, the existing skate brackets are usually made of carbon steel and stainless steel, with low structural precision, poor mechanical properties such as toughness, hardness, and bending resistance, etc., resulting in short service life and poor performance. . Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/10B32B9/00B32B9/04B32B15/18B32B37/06B32B37/10B32B37/15B32B38/18A63C1/42A63C3/04
CPCA63C1/42A63C3/04B32B7/10B32B9/007B32B9/041B32B15/18B32B37/06B32B37/10B32B37/15B32B38/1858B32B2250/42B32B2307/536B32B2307/546B32B2307/558
Inventor 陈冉曹振王旭东李炯利张海平李佳佳
Owner 北京石墨烯技术研究院有限公司
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