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Graphene nanoparticle composite material and preparation method thereof

A technology of nano-particles and composite materials, applied in the field of composite materials, can solve the problems of graphene oxide not being utilized, and achieve the effects of easy regulation, mild reaction conditions, and simple operation

Active Publication Date: 2017-11-28
QINGDAO UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only utilizes the epoxy groups on the surface of graphene oxide, and the hydroxyl groups of graphene oxide are not utilized.

Method used

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  • Graphene nanoparticle composite material and preparation method thereof
  • Graphene nanoparticle composite material and preparation method thereof
  • Graphene nanoparticle composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Using natural flake graphite as raw material, graphene oxide was prepared by the improved Hummers method. Weigh 1.0g of flake graphite, 3g of potassium permanganate, and 0.5g of sodium nitrate into the cooled kettle in turn, then add 30mL of 98% concentrated sulfuric acid, quickly cover and tighten the lid of the kettle, put it in the refrigerator for 30min at low temperature; take out the reaction Put it in an oven at 80°C for 10 minutes, take it out and cool it to room temperature; pour the product into a beaker filled with 100ml deionized water, add a certain amount of hydrogen peroxide dropwise until the liquid turns bright yellow or earthy yellow; let it stand for 24 hours , Pour off the supernatant, first pickle with 5% HCl for 3 times, and then wash it with water for several times until the pH is 5-7; after centrifuging the obtained solution, the substance at the bottom is high-concentration graphite oxide ene, and graphene oxide was obtained after freeze-dry...

Embodiment 2

[0037] (1) the preparation method of graphene oxide is with the step (1) in the embodiment one;

[0038] (2) Disperse 60 mg of nano-titanium oxide into 90 mL of ethanol solution of γ-aminopropyltriethoxysilane with a volume fraction of 2%, sonicate for 2 hours, add 12 mL of deionized water dropwise in a water bath at 90° C., and react for 10 hours to obtain The product was washed three times with absolute ethanol and deionized water, and freeze-dried to obtain functionalized titanium oxide;

[0039] (3) Disperse 30 mg of graphene oxide into 50 mL of ethanol solution of γ-glycidylpropylmethyldimethoxysilane with a volume fraction of 2%, ultrasonicate for 2 hours, add 6 mL of deionized water dropwise in a water bath at 90°C, After reacting for 10 hours, the obtained product was washed three times with absolute ethanol and deionized water, and freeze-dried to obtain functionalized graphene oxide;

[0040](4) Add 30 mg of functionalized graphene oxide to 5.5 mL of N,N-dimethylfor...

Embodiment 3

[0043] (1) the preparation method of graphene oxide is with the step (1) in the embodiment one;

[0044] (2) Disperse 40 mg of nano-silica into 50 mL of an ethanol solution of γ-aminopropyltriethoxysilane with a volume fraction of 2%, sonicate for 2 hours, add 6 mL of deionized water dropwise in a water bath at 90° C., and react for 10 hours. The obtained product was washed three times with absolute ethanol and deionized water, and freeze-dried to obtain functionalized zirconia;

[0045] (3) Disperse 40 mg of graphene oxide into 40 mL of ethanol solution of γ-glycidylpropylmethyldimethoxysilane with a volume fraction of 2%, ultrasonicate for 2 hours, add 6 mL of deionized water dropwise in a water bath at 90°C, After reacting for 10 hours, the obtained product was washed three times with absolute ethanol and deionized water, and freeze-dried to obtain functionalized graphene oxide;

[0046] (4) Add 30 mg of functionalized graphene oxide to 6 mL of N,N-dimethylformamide, sonic...

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Abstract

The invention relates to the field of composite materials and in particular to a nanoparticle / graphene composite material and a preparation method thereof. In order to utilize the oxygen-containing functional groups on the surface of graphene oxide, the invention aims at providing the nanoparticle / graphene composite material and the preparation method thereof. According to the preparation method, hydroxyl and epoxy group on the surface of the graphene oxide are simultaneously modified by fully utilizing the oxygen-containing functional groups on the surface of the graphene oxide; the prepared nanoparticle / graphene composite material can be widely applied to the fields of composite materials, anticorrosive coating materials and the like.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a nanoparticle / graphene composite material and a preparation method thereof. Background technique [0002] Graphene is a sp 2 A two-dimensional crystal material composed of hybridized carbon atoms is a compound hexagonal lattice. Graphene oxide is a functionalized derivative of graphene. The structure of graphene oxide is similar to that of graphene, which is close to the plane and presents a two-dimensional network structure. The difference from graphene is that graphene oxide is a kind of surface and edge containing hydroxyl, epoxy and carboxyl groups. A substance consisting of monomolecular carbon layers with oxygen functional groups. Sufficient oxygen-containing groups not only make graphene oxide well compatible with organic polymers, but also make it easier to functionalize. [0003] However, GO exhibits a close-packed structure due to the intrinsic van der Waals inte...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09D7/12C09D163/00C08K9/06C08K3/04C08K3/22C08K3/36C04B14/30C04B14/36C01B32/184
CPCC09D163/00C04B40/0039C08K3/04C08K3/22C08K3/36C08K9/06C09D5/08C08K2201/011C08K2003/2241C08K2003/2244C04B14/024C04B14/306C04B14/305C04B14/06
Inventor 刘猛张晓辰李少香范金福薛守伟曲文娟李光俊
Owner QINGDAO UNIV OF SCI & TECH
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