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Method for preparing graphene polyphosphazene nano composite material

A nano-composite material, a technology of polyphosphazene, applied in the field of nano-graphene functional materials, can solve problems such as graphene structural defects, affecting the excellent performance of graphene, etc., achieve low cost, easy to achieve large-scale production, and simple process conditions Effect

Inactive Publication Date: 2013-01-23
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the process of exfoliating and reducing graphene after compounding, graphite oxide will cause defects in the structure of graphene, which will seriously affect the excellent performance of graphene.

Method used

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  • Method for preparing graphene polyphosphazene nano composite material
  • Method for preparing graphene polyphosphazene nano composite material
  • Method for preparing graphene polyphosphazene nano composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 2.0 g of natural graphite in a reaction vessel, add 50 mL of concentrated sulfuric acid with a mass concentration of 95%, and add 6.0 g of KMnO 4 , react at low temperature for 2 hours; place in a constant temperature water bath at about 35°C, and continue to react at medium temperature for 1h; add 90 mL of deionized water, control the temperature at about 100°C, and continue to react at high temperature for 1h; then transfer the reaction solution into a beaker, and use The reaction solution was diluted with deionized water, and the mass concentration was 30% H 2 o 2 Solution until no bubbles are generated, the product is washed with acidic aqueous solution and deionized water respectively, and graphite oxide is obtained after vacuum drying.

[0023] 0.05g of graphite oxide was ultrasonically dispersed in 50ml of deionized water to obtain graphene oxide, and 5 mL of a mass concentration of 85% hydrazine hydrate solution was added thereto, placed in an oil bath at...

Embodiment 2

[0030] Weigh 2.0 g of natural graphite in a reaction vessel, add 50 mL of concentrated sulfuric acid with a mass concentration of 95%, and add 6.0 g of KMnO 4 , react at low temperature for 2 hours; place in a constant temperature water bath at about 35°C, and continue to react at medium temperature for 1h; add 90 mL of deionized water, control the temperature at about 100°C, and continue to react at high temperature for 1h; then transfer the reaction solution into a beaker, and use The reaction solution was diluted with deionized water, and the mass concentration was 30% H 2 o 2 Until no bubbles are generated, the product is washed with acidic aqueous solution and deionized water respectively, and graphite oxide is obtained after vacuum drying.

[0031] 0.05g of graphite oxide was ultrasonically dispersed in 50ml of deionized water to obtain graphene oxide, and 5 mL of a mass concentration of 85% hydrazine hydrate solution was added thereto, placed in an oil bath at 95°C for...

Embodiment 3

[0034] Weigh 2.0 g of natural graphite in a reaction vessel, add 50 mL of concentrated sulfuric acid with a mass concentration of 95%, and add 6.0 g of KMnO 4 , react at low temperature for 2 hours; place in a constant temperature water bath at about 35°C, and continue to react at medium temperature for 1h; add 90 mL of deionized water, control the temperature at about 100°C, and continue to react at high temperature for 1h; then transfer the reaction solution into a beaker, and use The reaction solution was diluted with deionized water, and the mass concentration was 30% H 2 o 2 Until no bubbles are generated, the product is washed with acidic aqueous solution and deionized water respectively, and graphite oxide is obtained after vacuum drying.

[0035] 0.05g of graphite oxide was ultrasonically dispersed in 50ml of deionized water to obtain graphene oxide, and 5 mL of a mass concentration of 85% hydrazine hydrate solution was added thereto, placed in an oil bath at 95°C for...

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Abstract

The invention belongs to the technical field of a nano graphene functional material and relates to a method for preparing a graphene polyphosphazene nano composite material. The method comprises the following steps of: performing a reaction of natural graphite and strong acid and a strong oxidizing substance to generate graphite oxide; carrying out ultrasonic dispersion on the graphite oxide to prepare graphene oxide; adding a reducing agent (hydrazine hydrate) to carry out reduction so as to obtain graphene; ultrasonically dispersing the graphene into a specific solvent; sequentially adding phosphonitrilic chloride trimerl, 4,4'-dihydroxy diphenyl sulfone and triethylamine; and performing an ultrasonic reaction for a certain time and carrying out simple post treatment to obtain the graphene polyphosphazene nano composite material. The method has a simple technological process, low cost and high yield. In the prepared composite material, graphene is uniformly coated by polyphosphazene. The composite material has good nano functionality, stable structure performance and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of nano-graphene functional materials, in particular to a preparation method for forming a stable graphene-polyphosphazene nanocomposite material through in-situ polymerization. Background technique [0002] Graphene is composed of a single layer of carbon atoms through covalent bonds (carbon sp 2 The ideal two-dimensional crystal with regular hexagonal symmetry is formed by combining the σ bond and π bond formed by the hybrid orbital, and its thickness is only 0.335 nanometers, which is the thinnest layered material found so far. Due to its unique two-dimensional nanostructure and excellent crystal quality, graphene has excellent electrical, thermal, magnetic and mechanical properties, and is expected to be used in high-performance nanoelectronic devices, gas sensors, thin film materials, energy storage materials, liquid crystal materials , catalytic materials, biomedical materials and other fields have be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L85/02C08G79/02C08K3/04C08G79/025
Inventor 张小燕韩同伟张岐龚玉珍
Owner JIANGSU UNIV
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