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Graphene aqueous dispersion liquid, graphene concrete and preparation methods of graphene aqueous dispersion liquid and graphene concrete

A graphene and dispersion technology, which is applied in graphene water dispersion and its preparation, and graphene concrete preparation field, can solve problems such as settlement and agglomeration, and achieve the solution of dispersion problem, agglomeration problem, and uniform and stable dispersion. Effect

Active Publication Date: 2019-11-26
GUANGXI UNIVERSITY OF TECHNOLOGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene itself is neither lipophilic nor hydrophilic. As an additive material for concrete, it is prone to settlement and agglomeration problems. It must be dispersed on the surface to achieve uniform and stable dispersion of graphene in concrete.

Method used

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  • Graphene aqueous dispersion liquid, graphene concrete and preparation methods of graphene aqueous dispersion liquid and graphene concrete
  • Graphene aqueous dispersion liquid, graphene concrete and preparation methods of graphene aqueous dispersion liquid and graphene concrete
  • Graphene aqueous dispersion liquid, graphene concrete and preparation methods of graphene aqueous dispersion liquid and graphene concrete

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Experimental program
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Effect test

Embodiment 1

[0043] The graphene aqueous dispersion is made of the following raw materials in mass percentage: 1% graphene, 0.5% sodium dodecylbenzenesulfonate, 0.5% polyvinylpyrrolidone, and the rest is water.

[0044] The oxygen content of the graphene is 0.5%.

[0045] Described graphene aqueous dispersion, its preparation method may further comprise the steps:

[0046] Take graphene, sodium dodecylbenzenesulfonate, polyvinylpyrrolidone and water according to the percentage, and use ultrasonic mixing to disperse it.

[0047] In the graphene aqueous dispersion, the particle size of the graphene is: D50=5-60 μm.

[0048] Applied above-mentioned graphene aqueous dispersion liquid, the method for preparing graphene concrete, comprises the following steps:

[0049] Take the graphene aqueous dispersion, add polycarboxylate water reducer, 190kg water and 310kg cement, ultrasonic 10min, then add 710kg standard sand, stir to make cement mortar, to get final product; wherein, the mass fraction ...

Embodiment 2

[0052] The graphene aqueous dispersion is characterized in that it is made of the following raw materials in mass percentage: 5% graphene, 2% sodium dodecylbenzenesulfonate, 2% polyvinylpyrrolidone, and the rest is water.

[0053] The oxygen content of the graphene is 50%.

[0054] Described graphene aqueous dispersion, its preparation method may further comprise the steps:

[0055] Graphene, sodium dodecylbenzenesulfonate, polyvinylpyrrolidone and water are taken according to the percentage, and homogeneously mixed and dispersed to obtain the product.

[0056] In the graphene aqueous dispersion, the particle size of the graphene is: D50=100-140 μm.

[0057] Applied above-mentioned graphene aqueous dispersion liquid, the method for preparing graphene concrete, comprises the following steps:

[0058] Get the graphene aqueous dispersion, add polycarboxylate water reducer, 200kg water and 320kg cement, after stirring and mixing, add 810kg standard sand, stir to make cement mort...

Embodiment 3

[0062] The graphene aqueous dispersion is characterized in that it is made of the following raw materials in mass percentage: 3% graphene, 1% sodium dodecylbenzenesulfonate, 1.2% polyvinylpyrrolidone, and the rest is water.

[0063] The oxygen content of the graphene is 10%.

[0064] Described graphene aqueous dispersion, its preparation method may further comprise the steps:

[0065] Take graphene, sodium dodecylbenzene sulfonate, polyvinylpyrrolidone and water according to the percentage, and grind, mix and disperse to obtain it.

[0066] In the graphene aqueous dispersion, the particle size of the graphene is: D50=50-100 μm.

[0067] Applied above-mentioned graphene aqueous dispersion liquid, the method for preparing graphene concrete, comprises the following steps:

[0068] Take the graphene water dispersion, add polycarboxylate water reducer, 150kg water and 330kg cement, ultrasonic for 30min, then add 680kg standard sand, stir to make cement mortar, and get it;

[006...

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Abstract

The invention provides a graphene aqueous dispersion liquid, graphene concrete and preparation methods of the graphene aqueous dispersion liquid and the graphene concrete. The graphene aqueous dispersion liquid is prepared from the following raw materials, in percentages by mass: 1-5% of graphene or graphene oxide, 0.5%-2% of sodium dodecylbenzenesulphonate, 0.5%-2% of polyvinylpyrrolidone, and the rest is water. The preparation method of the graphene aqueous dispersion liquid includes the following steps: taking the graphene or the graphene oxide, the sodium dodecylbenzenesulfonate, the polyvinylpyrrolidone and the water according to percentages by mass, and performing full mixing and dispersion to obtain the graphene aqueous dispersion liquid. The invention aims to provide the graphene aqueous dispersion liquid and the preparation method thereof, and the preparation method of the graphene concrete by using the graphene aqueous dispersion liquid. The graphene aqueous dispersion liquidprovided by the invention can improve the problem of settlement of graphene in an aqueous medium, realize the uniform and stable dispersion of graphene in cement concrete, and can be used to preparethe graphene concrete with excellent quality and performance.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a graphene aqueous dispersion and a preparation method thereof, and a preparation method of graphene concrete using the graphene aqueous dispersion. Background technique [0002] Because of its cheap price and good overall performance, cement concrete has become the most extensive and cheapest construction engineering material and special engineering material. However, as time goes by, the durability of cement concrete is insufficient and prone to damage. With the increasing development of social economy and construction level, higher requirements are put forward for the diversification and special properties of concrete. Traditional cement can no longer adapt to special requirements under working conditions. In recent years, many studies have shown that adding nanomaterials to concrete can effectively improve the microstructure of concrete due to its advantages of smal...

Claims

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Application Information

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IPC IPC(8): C04B24/26
CPCC04B40/0039C04B22/02C04B24/20C04B24/2652C04B24/24C04B22/002
Inventor 周铭李虓董健苗梁培森曹嘉威王留阳刘振钊李亮川陈鑫
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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