Nitrogen-doped graphene modified graphite puree and preparation method thereof

A graphene modification and graphene technology, which is applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc., can solve the problem of further improvement of electrical conductivity and poor conductivity of coating thickness advanced questions

Active Publication Date: 2018-07-31
安徽大松树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity of ordinary graphite puree needs to be further improved. In addition, the coating thickness of graphite puree is also the main reason for its low conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0018] Preparation of nitrogen-doped graphene: 150g of urea (analytical pure) was added to 100mL of graphene oxide solution, fully stirred and mixed; air-dried at 40°C for 10h to obtain a mixed powder; then the mixed powder was calcined to obtain the Nitrogen doped graphene. Wherein, the steps of calcination used are: starting from 20°C to 800°C and maintaining at 800°C for 1 hour, wherein the heating rate is 5°C / min; then cooling down to 30°C at a cooling rate of 10°C / min; wherein, the The calcination atmosphere is N2, and the flow rate of N2 is 0.001m3 / h.

preparation example 2

[0020] Preparation of nitrogen-doped graphene: Add 200g of urea (analytical pure) to 100mL of graphene oxide solution, stir and mix thoroughly; blow dry at 60°C for 6h to obtain mixed powder; then calcinate the mixed powder to obtain the Nitrogen doped graphene. Wherein, the steps of calcination used are: starting from 20°C to 800°C and maintaining at 800°C for 1 hour, wherein the heating rate is 5°C / min; then cooling down to 30°C at a cooling rate of 10°C / min; wherein, the The calcination atmosphere is N2, and the flow rate of N2 is 0.001m3 / h.

Embodiment 1

[0022] Nitrogen-doped graphene, conductive graphite, polypropylene resin (with a weight average molecular weight of 10,000), glass powder, zinc powder, terpineol, ethyl cellulose and polyvinylpyrrolidone in a weight ratio of 10:100: 25:1:1:30:1:1 Stirring for 2 hours at a rotational speed of 2000rpm to obtain nitrogen-doped graphene modified graphite puree A1;

[0023] Wherein, the added nitrogen-doped graphene is prepared from Preparation Example 1.

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PUM

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Abstract

The invention discloses a preparation method of a nitrogen-doped graphene modified graphite raw stock. The preparation method comprises the step of mixing nitrogen-doped graphene, conductive graphite, resin, glass powder, zinc powder, terpilenol, ethyecellulose and polyvinyl pyrrolidone to obtain the nitrogen-doped graphene modified graphite raw stock, wherein the preparation method of the nitrogen-doped graphene comprises the steps of firstly adding carbamide in a graphene oxide solution for mixing, then drying the mixture to obtain mixed powder and finally roasting the mixed powder to obtain the nitrogen-doped graphene. The concentration of the graphene oxide solution is 10 mg / mL; and relative to 100 parts by weight of the graphene oxide solution, the usage of the carbamide is 150-200 parts by weight. The nitrogen-doped graphene modified graphite raw stock has good conductivity, low unit dosage and high coating efficiency.

Description

technical field [0001] The invention relates to graphite puree, in particular to nitrogen-doped graphene modified graphite puree and a preparation method thereof. Background technique [0002] Graphite puree is made of conductive graphite or carbon black as the main raw material, and the prepared graphite puree is widely used in communication products, computers, portable electronic products, network hardware, medical instruments, household electronic products and aerospace electronic products. However, the electrical conductivity of general graphite puree needs to be further improved. In addition, the coating thickness of graphite puree is also the main reason for its low conductivity. Contents of the invention [0003] The purpose of the present invention is to provide a nitrogen-doped graphene-modified graphite protoplasm, which has good electrical conductivity, less unit dosage and high painting efficiency. [0004] In order to achieve the above object, the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/18H01B1/24H01B13/00
CPCH01B1/18H01B1/24H01B13/00
Inventor 马西健
Owner 安徽大松树脂有限公司
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