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Graphene-loaded nano copper particle composite material and preparation method thereof

A composite material and graphene technology, which is applied in metal material coating technology, metal processing equipment, liquid chemical plating, etc., can solve the problems affecting the performance of composite materials, reducing the performance of graphene, and weak interface binding force, etc., to achieve improvement Comprehensive performance, improved dispersion, and structural integrity

Inactive Publication Date: 2020-03-27
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the particularity of the preparation method of redox graphene, there are many structural defects and oxygen-containing functional groups on the surface of graphene. The existence of these defects and oxygen-containing functional groups can reduce the performance of graphene; The wettability is extremely poor, there is neither diffusion nor reaction between the adjacent interfaces of graphene and metal copper, the interface between graphene and copper is difficult to bond, and the interface bonding force is weak, which seriously affects the performance of composite materials

Method used

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  • Graphene-loaded nano copper particle composite material and preparation method thereof
  • Graphene-loaded nano copper particle composite material and preparation method thereof
  • Graphene-loaded nano copper particle composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Immerse graphene in water, carry out ultrasonic dispersion treatment on graphene for 10 minutes, the solid-to-liquid ratio of graphene to water is 2g / L; then take out graphene, put it into sensitization solution, and sensitize treatment at 90°C for 10 minutes to obtain Sensitized graphene;

[0046] The sensitizer is made of SnCl 2 solution mixed with hydrochloric acid, SnCl 2 The concentration of the solution is 10g / L, the mass concentration of hydrochloric acid is more than 36%, and the concentration of hydrochloric acid and SnCl 2 The volume ratio of the solution is 0.01;

[0047]After the sensitized graphene is taken out, it is washed with water until the washing solution is neutral, then placed in the activation solution, and activated for 4 minutes under stirring conditions to obtain activated graphene;

[0048] The activation solution is made of AgNO 3 solution and ammonia solution, AgNO 3 The concentration of the solution is 1g / L, and the amount of ammonia w...

Embodiment 2

[0054] Method is with embodiment 1, and difference is:

[0055] (1) Ultrasonic dispersion treatment for 30 minutes, the solid-to-liquid ratio of graphene and water is 2.5g / L; sensitization treatment at 95°C for 8 minutes;

[0056] (2) SnCl 2 The concentration of the solution is 20g / L, hydrochloric acid and SnCl 2 The volume ratio of the solution is 0.02;

[0057] (3) Activation treatment for 7 minutes; the AgNO used in the activation solution 3 The concentration of the solution is 1.5g / L;

[0058] (4) When preparing the plating solution, CuSO 4 ·5H 2 The amount of O is 25g / L water, the amount of formaldehyde solution is 32mL / L water, the amount of EDTA·2Na is 40g / L water, C 4 h 4 KNaO 6 The dosage is 20g / L water, and the consumption of 2,2-bipyridine is 2g / L water;

[0059] (5) The temperature of the plating solution is raised to 40°C, and NaOH solution is added dropwise to adjust the pH value to 12.5, and then kept for 35 minutes;

[0060] (6) Dry at 100±2°C for 2h;...

Embodiment 3

[0065] Method is with embodiment 1, and difference is:

[0066] (1) Ultrasonic dispersion treatment for 20 minutes, the solid-to-liquid ratio of graphene and water is 1.5g / L; sensitization treatment at 100°C for 5 minutes;

[0067] (2) SnCl 2 The concentration of the solution is 30g / L, hydrochloric acid and SnCl 2 The volume ratio of the solution is 0.03;

[0068] (3) Activation treatment for 10 minutes; AgNO used in the activation solution 3 The concentration of the solution is 2g / L;

[0069] (4) When preparing the plating solution, CuSO 4 ·5H 2 The amount of O is 37.5g / L water, the amount of formaldehyde solution is 48mL / L water, the amount of EDTA·2Na is 60g / L water, C 4 h 4 KNaO 6 The consumption of 30g / L water, the consumption of 2,2-bipyridine is 3g / L water;

[0070] (5) The temperature of the plating solution was raised to 45°C, and NaOH solution was added dropwise to adjust the pH value to 12, and then kept for 40 minutes;

[0071] (6) Dry at 100±2°C for 3h; ...

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Abstract

The invention discloses a graphene-loaded nano copper particle composite material and a preparation method thereof. The composite material is composed of a graphene sheet layer and a chemical coatingon the surface of the graphene sheet layer, and the chemical coating is nano copper with a face-centered cubic structure. The preparation method comprises the following steps: (1) immersing graphene into water for ultrasonic dispersion, then putting the graphene into sensitization liquid, and carrying out sensitization treatment on 90-100 DEG C; (2) taking out and washing the sensitized graphene,putting the sensitized graphene in an activating solution, and stirring and activating to obtain activated graphene; (3) taking out and washing the activated graphene, and then placing the activated graphene in a plating solution containing main salt and reducing agent components; (4) heating the plating solution, adjusting the pH value, and preserving heat; and (5) washing and drying the copper plating graphene. According to the method disclosed by the invention, the stable combination between the graphene and the nano copper particles can be realized, the surface defects of the graphene arerepaired, and the comprehensive performance of the graphene is improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a graphene-loaded nano-copper particle composite material and a preparation method thereof. [0002] technical background [0003] In recent years, the requirements for material performance in the fields of machinery, electronic information, energy storage, aerospace and other fields have become higher and higher, and the research on high-performance and multi-purpose composite materials has become a hot spot in the field of material research; copper-based composite materials have excellent thermal conductivity , Conductive properties, widely used in electrical and electronic, machinery manufacturing, construction, national defense and other industrial fields, and become one of the important varieties and research hotspots in the field of metal matrix composite materials. [0004] Graphene is SP 2 A two-dimensional single-layer atomic crystal material with a hexagonal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/40C23C18/18B22F1/02
CPCC23C18/405C23C18/1889B22F1/068B22F1/17
Inventor 张志刚卢晓通曹卓坤徐建荣罗洪杰
Owner NORTHEASTERN UNIV
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