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Metal-layer-sandwiched crystalline flake graphite as well as preparation method and application thereof

A technology of flake graphite and natural flake graphite, which is applied in metal material coating process, coating, liquid chemical plating and other directions, can solve the problems such as the inability to improve the interface bonding strength, and achieve the effect of low preparation cost and simple process

Active Publication Date: 2019-11-15
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is often only effective for improving the bonding force between graphite and copper with a smaller size, such as spherical graphite, graphite powder or graphite fiber, etc.
However, when the graphite size is larger than a certain value, this method cannot effectively improve the interfacial bonding strength like the surface metallization of small-sized graphite.

Method used

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  • Metal-layer-sandwiched crystalline flake graphite as well as preparation method and application thereof
  • Metal-layer-sandwiched crystalline flake graphite as well as preparation method and application thereof
  • Metal-layer-sandwiched crystalline flake graphite as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment discloses a method for preparing graphite with metal-intercalated copper flakes, comprising the following steps:

[0031] Step 1: Preparation of layered flake graphite

[0032] (1) At room temperature, put 5ml of perchloric acid and 1ml of phosphoric acid into a glass beaker and mix evenly to obtain a mixed acid, then add 0.4g of potassium permanganate, stir slowly to dissolve it in the mixed acid, and finally add 4g Flake graphite and stir well to combine. Place the glass beaker filled with perchloric acid, phosphoric acid, potassium permanganate and flake graphite in a constant temperature water bath with a water temperature of 40°C for 60 minutes. Stir continuously during the reaction to ensure uniform reaction. After the reaction was finished, it was washed with water several times, and the precipitated flake graphite was filtered out and dried at 60°C. Finally, put the obtained flake graphite into the muffle furnace, raise the muffle furnace to 30...

Embodiment 2

[0041] This embodiment discloses a method for preparing graphite with metal-intercalated copper flakes, comprising the following steps:

[0042] Step 1: Preparation of layered flake graphite

[0043](1) At room temperature, put 3ml of perchloric acid and 1.5ml of phosphoric acid into a glass beaker and mix evenly to obtain a mixed acid, then add 0.5g of potassium permanganate, stir slowly to dissolve it in the mixed acid, and finally add 3g flake graphite and stir well to make it evenly mixed. Place the glass beaker containing perchloric acid, phosphoric acid, potassium permanganate and flake graphite in a constant temperature water bath with a water temperature of 40°C to react for 60 minutes. Stir continuously during the reaction to ensure uniform reaction. After the reaction was finished, it was washed with water several times, and the precipitated flake graphite was filtered out and dried at 60°C. Finally, put the obtained flake graphite into the muffle furnace, raise th...

Embodiment 3

[0051] This embodiment discloses a method for preparing graphite with metal nickel flakes, comprising the following steps:

[0052] Step 1: Preparation of layered flake graphite

[0053] (1) At room temperature, put 5ml of perchloric acid and 1ml of phosphoric acid into a glass beaker and mix evenly to obtain a mixed acid, then add 0.4g of potassium permanganate, stir slowly to dissolve it in the mixed acid, and finally add 4g Flake graphite and stir well to combine. Place the glass beaker containing perchloric acid, phosphoric acid, potassium permanganate and flake graphite in a constant temperature water bath with a water temperature of 40°C to react for 60 minutes. Stir continuously during the reaction to ensure uniform reaction. After the reaction was finished, it was washed with water several times, and the precipitated flake graphite was filtered out and dried at 60°C. Finally, put the obtained flake graphite into the muffle furnace, raise the muffle furnace to 300° C....

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Abstract

The invention discloses a preparation method of metal-layer-sandwiched crystalline flake graphite. The preparation method comprises the following steps that sensitizing treatment and activating treatment are sequentially carried out on the layered crystalline flake graphite, metal Pd is adsorbed on the surface and the interlayer of the crystalline flake graphite, and a nucleation site is formed onthe metal Pd; and the surface and the interlayer of the layered crystalline flake graphite are plated with metal layers by adopting a chemical plating method, so that the metal-layer-sandwiched crystalline flake graphite is obtained. The invention further discloses the metal-layer-sandwiched crystalline flake graphite prepared through the method and an application thereof. The metal-layer-sandwiched crystalline flake graphite prepared through the method can improve the bonding strength between the crystalline flake graphite and a copper matrix when being used for a copper-based composite material.

Description

technical field [0001] The invention relates to the technical field of preparation of new materials, in particular to flake graphite with metal interlayers, its preparation method and application. Background technique [0002] Graphite is an allotrope of carbon, the color is gray-black, with a greasy feeling, hexagonal layered crystal structure, the bonding force between atoms in a single layer is strong, and the π bond bonding force between layers is low , easy to break and produce relative slippage; light weight (density 2.2-2.3g / cm 3 ), the melting point is as high as 3527°C, the heat-resistant temperature in the air is 454°C, and it does not chemically react with metal or rubber. At room temperature, when the π bond between the graphite layers is broken, a split surface is formed, which has a certain adsorption capacity for the gas in the air. This split surface is the basis for the lubricating performance of graphite. Its lubricating properties remain good at temperat...

Claims

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Application Information

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IPC IPC(8): C23C18/40C23C18/34C23C18/44C23C18/18
CPCC23C18/1879C23C18/34C23C18/405C23C18/44
Inventor 邹豪豪冉旭朱魏巍战思琪
Owner CHANGCHUN UNIV OF TECH