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A kind of highly dispersed photosensitive graphene and preparation method thereof

A high-dispersion, graphene technology, applied in the direction of graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of graphene, easy to be reduced by reducing agent, low energy consumption, etc. , Improve the dispersion, the effect of low reaction conditions

Active Publication Date: 2017-05-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Photocurable materials are widely accepted and paid attention to as a green, environmentally friendly, and low energy consumption environment-friendly material because there is no or only a small amount of solvent volatilization during the curing process. Photosensitive graphene belongs to the category of modified graphene. One, can be widely used in the field of photocurable materials, but the photosensitive double bond is easily reduced by the reducing agent during the synthesis process; before graphene is used in the field of photocurable materials, there are many reports at home and abroad, such as M.Martin-Gallego, etc. Graphene and epoxy resin were prepared by UV curing technology to improve the mechanical and thermal properties of nanocomposites, but the performance was not further improved through the design of photosensitive graphene; Yuan Hu et al. used photosensitive modification of graphene to apply photosensitive In the field of solidification, but the problem of graphene reductive agglomeration and photosensitive double bond protection is not solved at the same time; a patent (CN 102730674 A) published by Northwestern Polytechnical University introduces photosensitive double bond while solving the problem of graphene agglomeration, and does not involve Avoid the double bond being restored problem

Method used

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  • A kind of highly dispersed photosensitive graphene and preparation method thereof
  • A kind of highly dispersed photosensitive graphene and preparation method thereof
  • A kind of highly dispersed photosensitive graphene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of highly dispersed photosensitive graphene, described photosensitive graphene is made through the following steps:

[0028] (1) Oxidation, select a 500ml three-neck flask, add 1g sodium nitrate and 2g graphite powder, mechanically stir at a speed of 300rpm, add 46ml of concentrated sulfuric acid, stir in an ice bath, control the temperature below 5°C for 30min; slowly and uniformly add 15g potassium permanganate Powder, last for about 30min, continue to stir for 30min in the ice bath, then remove the ice bath, react for 12h; add 92ml of deionized water drop by drop, last for about 30min, a large amount of heat is released, and the temperature rises to 98°C; add 30% to the system Hydrogen peroxide until no more bubbles are generated, the system quickly turns golden yellow; stop the reaction, dialyze with deionized water with a molecular weight of 8000 for 4 days, change the water every 6 hours; freeze-dry for a week to obtain graphene oxide GO;

[0029] (2) Amina...

Embodiment 2

[0038] A kind of highly dispersed photosensitive graphene, described photosensitive graphene is made through the following steps:

[0039] (1) Oxidation, select a 500ml three-neck flask, add 1g sodium nitrate and 2g graphite powder, mechanically stir at a speed of 300rpm, add 46ml of concentrated sulfuric acid, stir in an ice bath, control the temperature below 5°C for 30min; slowly and uniformly add 15g potassium permanganate Powder, last for about 30min, continue to stir for 30min in the ice bath, then remove the ice bath, react for 12h; add 92ml of deionized water drop by drop, last for about 30min, a large amount of heat is released, and the temperature rises to 98°C; add 30% to the system Hydrogen peroxide until bubbles are no longer generated, the system quickly turns golden yellow; stop the reaction, dialyze with deionized water with a molecular weight of 8000 for 4 days, change the water every 6 hours; freeze-dry for one week to obtain graphene oxide;

[0040] (2) Amin...

Embodiment 3

[0045] A kind of highly dispersed photosensitive graphene, described photosensitive graphene is made through the following steps:

[0046] (1) Oxidation, select a 500ml three-neck flask, add 1g sodium nitrate and 2g graphite powder, mechanically stir at a speed of 300rpm, add 46ml of concentrated sulfuric acid, stir in an ice bath, control the temperature below 5°C for 30min; slowly and uniformly add 15g potassium permanganate Powder, last for about 30min, continue to stir for 30min in the ice bath, then remove the ice bath, react for 12h; add 92ml of deionized water drop by drop, last for about 30min, a large amount of heat is released, and the temperature rises to 98°C; add 30% to the system Hydrogen peroxide until bubbles are no longer generated, the system quickly turns golden yellow; stop the reaction, dialyze with deionized water with a molecular weight of 8000 for 4 days, change the water every 6 hours; freeze-dry for one week to obtain graphene oxide;

[0047] (2) Amin...

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Abstract

The invention discloses a high dispersion photosensitive graphene. A preparing method of the high dispersion photosensitive graphene comprises the following steps: (1) oxidation, (2) amination, (3) reduction, (4) semi terminal blocking, and (5) photosensitization. The photosensitive graphene has high dispersion; the method protects dual photosensitive keys while solving the problem of easy agglomeration of the graphene, and the graphene has certain electrical performance and can be widely applied to the field of a photocuring material.

Description

technical field [0001] The invention relates to a preparation method of functional graphene, in particular to a preparation method of graphene containing photosensitive double bonds. Background technique [0002] Graphene is made of sp 2 The 2-dimensional monoatomic sheet composed of hybrid carbon atoms has many excellent properties: the Young's modulus can reach 1TPa, the ultimate strength can reach 130GPa, the thermal conductivity can reach 5000w / (m.k), and the electrical conductivity can reach 6000s / cm , as well as very high specific surface area and air tightness; these excellent properties make graphene a research hotspot since its discovery. [0003] The preparation methods of graphene mainly include mechanical exfoliation method, epitaxial growth method, chemical vapor deposition method, graphene oxide reduction method, etc. Among them, the graphene oxide reduction method is simple to prepare, has a large output, and is conducive to industrial production, so it is th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C01B32/194
CPCC01P2002/82C01P2004/04C01P2006/40
Inventor 刘仁董博文袁妍刘敬成罗静刘晓亚
Owner JIANGNAN UNIV