A device and method for preparing graphene nano water-based slurry for concrete

A water-based slurry and graphene technology, applied in the field of building materials, can solve the problems of limited intrinsic properties of graphene, incompatible production processes, and high cost of graphene oxide

Active Publication Date: 2020-10-27
苏州鼎烯聚材纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problems of high cost of existing graphene oxide, limited intrinsic properties of graphene, and incompatibility with concrete production technology, the present invention provides a device for preparing graphene nanometer water-based slurry for concrete. The device produces Efficient, easy to operate, and able to realize the continuous production of graphene nano water-based slurry for concrete

Method used

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  • A device and method for preparing graphene nano water-based slurry for concrete
  • A device and method for preparing graphene nano water-based slurry for concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Put 50-mesh high-expansion expandable graphite in the hopper, push the material into the high-temperature electric heating expansion furnace through the screw feeder, and heat it to 600°C with the silicon carbide heating rod to expand, and the expansion multiple is 250 times , specific surface area 62m 2 / g of graphite worms, and blown into the reactor by air pump;

[0040] (2) Open the stirring mechanism of the reaction kettle to make the vertical spiral belt rotate in the direction of the pointer, put the hydrogen peroxide with a volume concentration of 30% into the oxidized water storage tank, control the feed flow rate through the flow meter, and spray it through the feeder Mix with graphite worm spray in the reaction kettle, the weight ratio of graphite worm and hydrogen peroxide is 1:0.2, oxidize the surface of graphite worm, first react for 10 minutes, heat up to 100°C, continue stirring for 60 minutes to complete oxidation, continue stirring to cool down to ...

Embodiment 2

[0045] (1) Put the 50-mesh high expansion multiple expandable graphite in the hopper, push the material into the high-temperature electric heating expansion furnace through the screw feeder, and heat it to 1800°C with the silicon carbide heating rod for expansion, and the expansion multiple is 650 times , specific surface area 81m 2 / g of graphite worms, and blown into the reactor by air pump;

[0046] (2) Open the stirring mechanism of the reactor to rotate the vertical spiral belt in the direction of the pointer, put the hydrogen peroxide with a volume concentration of 50% into the oxidized water storage tank, and spray the graphite worms in the reactor with the spray feeder Mixing, the weight ratio of graphite worms to hydrogen peroxide is 1:0.01, oxidize the surface of graphite worms, first react for 120 minutes, heat up to 80°C, continue stirring for 10 minutes to complete oxidation, and obtain hydrophilic graphite worms;

[0047] (3) the aminopropyltrimethoxysilane aque...

Embodiment 3

[0051] (1) Put 50-mesh expandable graphite with high expansion multiple in the hopper, push the material into the high-temperature electric heating expansion furnace through the screw feeder, and heat it to 950°C with the silicon carbide heating rod for expansion, and the expansion multiple is 400 times , The specific surface area is greater than 78m 2 / g of graphite worms, and blown into the reactor by air pump;

[0052] (2) Open the stirring mechanism of the reactor to rotate the vertical spiral belt in the direction of the pointer, put the hydrogen peroxide with a volume concentration of 50% into the oxidized water storage tank, and spray the graphite worms in the reactor with the spray feeder Mixing, the weight ratio of graphite worms to hydrogen peroxide is 1:0.3, oxidize the surface of graphite worms, first react for 55 minutes, heat up to 90°C, continue to stir for 50 minutes and complete the oxidation to obtain hydrophilic graphite worms;

[0053] (3) The aqueous solu...

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Abstract

The invention relates to the technical field of building materials, in particular to a device and a method for preparing a graphene nano waterborne slurry for concrete. The device comprises an expandable graphite feeding mechanism, a high temperature heating expansion furnace, a reaction kettle, an oxidant storage tank, a coupling agent storage tank, a mineral powder storage tank and a high sheargraphene dispersion stripping machine, wherein the reaction kettle is provided with a stirring mechanism and a heating mechanism, the upper end of the reaction kettle is provided with a spray feedingmechanism, and the lower end of the reaction kettle is provided with a discharge port; the oxidant storage tank and the coupling agent storage tank are connected with the spray feeding mechanism; an inlet end of the high shear graphene dispersion stripping machine is connected with the discharge port of the reaction kettle through a slurry pump, an outlet end of the high shear graphene dispersionstripping machine is connected with the top end of the reaction kettle, and a graphene cyclic stripping system is formed. The device and the method for preparing the graphene nano waterborne slurry for the concrete are high in production efficiency, easy to operate, and can realize continuous production of the graphene nano waterborne slurry for the concrete; the preparation method is low in cost, simple in process steps, low requirements on equipment, high operability, and easy to realize large-scale production.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a device and method for preparing graphene nanometer water-based slurry for concrete. Background technique [0002] Graphene has ultra-high strength, modulus, thermal conductivity and electrical conductivity. Highly oxidized graphene, that is, graphene oxide does not have the intrinsic properties of graphene. At present, most of the so-called graphene is obtained from the reduction of graphene oxide. That is, reduced graphene oxide, its performance is far lower than the intrinsic properties of graphene, it is difficult to maximize the advantages of graphene's intrinsic properties, and graphene oxide is easy to re-accumulate into a graphite structure during reduction, resulting in the loss of graphene properties . Graphene oxide is produced through the peroxidative decomposition of graphite. Although the price of graphite powder as a raw material is low, the price of g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/18C04B24/20C04B24/16C01B32/19
CPCC04B40/0046C01B32/19C04B14/024C04B24/18C04B18/146C04B24/20C04B14/28C04B24/16C04B18/08
Inventor 邓超然张亚妮寇雅虎
Owner 苏州鼎烯聚材纳米科技有限公司
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