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Preparation method and production device of graphene microchip pre-dispersed masterbatch

A graphene microchip and production device technology, applied in the field of rubber processing technology, can solve the problems of poor graphene dispersion, weak interface, easy aging of masterbatch, shortened drying time, etc. Avoid the effects of aging and shortened drying time

Inactive Publication Date: 2018-01-30
青岛蓝湾烯碳材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome defects such as existing technology can only adopt batch method to prepare graphene microplate dispersion masterbatch, graphene dispersion is weak interface effect, masterbatch is easy to aging, a kind of graphene microplate dispersion masterbatch is provided The preparation method and production device can realize the rapid mixing and coagulation of latex and graphene, shorten the drying time, avoid the aging of the rubber material, and obtain the graphene microchip pre-dispersed masterbatch with excellent performance

Method used

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  • Preparation method and production device of graphene microchip pre-dispersed masterbatch
  • Preparation method and production device of graphene microchip pre-dispersed masterbatch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of graphene microplatelet dispersion

[0024] Get 600L of water and 6kg of graphene microflakes and add them into the graphene stirring tank 2, stir and disperse at a high speed of 2500rpm at room temperature for 5 hours, and prepare an aqueous dispersion of graphene microflakes with a mass fraction of 1%.

[0025] (2) Mixing and coagulation of graphene microplatelet dispersion / natural rubber latex

[0026] The graphene microsheet aqueous dispersion prepared in the graphene stirring tank 2 is transported in the mixing kettle 1 by pipeline, and the latex in the latex tank 3 is delivered in the mixing kettle simultaneously, and the liquid flow is controlled so that the 1000kg dry glue content is 60% natural rubber latex is added in the high-speed mixer at the same time, and the stirring speed is 400rpm, and the stirring time is 40min to prepare the mixed material; the mixed material is delivered to the settling tank 5; CaCl 2 solution, CaCl 2 The soluti...

Embodiment 2

[0034] (1) Preparation of graphene microplatelet dispersion

[0035] Get 600L of water, 1Kg sodium dodecylbenzene sulfonate and join in the graphene stirring tank 2, stir to obtain an aqueous solution; then 30Kg graphene microchips are added to the above aqueous solution, and 3000rpm high-speed stirring disperses at normal temperature for 3 hours, An aqueous dispersion of graphene microsheets with a mass fraction of 5% was prepared.

[0036] (2) Mixing and coagulation of graphene microplatelet dispersion / natural rubber latex

[0037] The graphene microsheet water dispersion prepared in the graphene stirring tank 2 is delivered to the mixing kettle 1 through the pipeline, and the latex in the latex tank 3 is delivered to the mixing kettle 1 at the same time, and the liquid flow is controlled to make the 3000kg dry rubber content 60% natural rubber latex is added in the high-speed mixer simultaneously, and stirring speed is 800rpm, and stirring time is 20min, makes mixed material...

Embodiment 3

[0045] (1) Preparation of graphene microplatelet dispersion

[0046] Take 600L of water and 2Kg sodium dodecylbenzene sulfonate and add them to the graphene stirring tank, stir evenly to obtain an aqueous solution; then add 240Kg graphene microchips to the above aqueous solution, stir and disperse at a high speed of 3000rpm at room temperature for 5 hours, and prepare Aqueous dispersion of graphene microsheets with a mass fraction of 40%.

[0047] (2) Mixing and coagulation of graphene microplatelet dispersion / natural rubber latex

[0048] Graphene microsheet aqueous dispersion prepared in the graphene stirring tank is transported in the mixing kettle by pipeline, and the latex in the latex tank is delivered to the mixing kettle kind simultaneously, and the liquid flow is controlled so that the 1000kg dry glue content is 60% The natural rubber latex is added to the high-speed mixer at the same time, the stirring speed is 600rpm, and the stirring time is 40min to prepare the m...

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Abstract

The invention relates to the technical field of technologies for processing rubber, in particular to a method and a production device for preparing graphene micro-plate pre-dispersion master batch. The method includes stirring and mixing graphene micro-plate dispersion liquid and latex with each other by the aid of a high-speed stirring machine to obtain mixed materials, adding flocculating agents into the mixed materials and coagulating the mixed materials to obtain pulp; dehydrating and drying the pulp to obtain the master batch. The method and the production device have the advantages that technologies are simple, the method and the production device are safe in operation, the graphene micro-plate pre-dispersion master batch can be continuously produced on a large scale, and the production efficiency can be improved as compared with original preparation technologies by the aid of batch processes; graphene micro-plates in the master batch prepared by the aid of the method can be highly dispersed as compared with melt processing methods; quick mixing and condensation can be implemented as compared with previous methods, drying and dehydrating phases are combined with squeezing drying and oven-drying modes, accordingly, the drying time can be shortened, rubber materials can be prevented from being aged, and the graphene micro-plate pre-dispersion master batch with excellent performance can be prepared by the aid of the method and the production device.

Description

technical field [0001] The invention relates to the technical field of rubber processing technology, in particular to a preparation method and a production device of graphene microchip pre-dispersed masterbatch. Background technique [0002] As a new type of carbon material, graphene has very excellent performance. It is a completely transparent two-dimensional crystal material with the smallest thickness, highest strength and highest hardness known in the world. The thermal conductivity at room temperature is as high as 5300W / ( m K), the resistivity is about 10 -6 Ω·m, which is the conductive material with the smallest resistivity; the specific surface area is about 2600m 2 / g, the theoretical elastic modulus reaches 103GPa, and the tensile strength reaches 125GPa. Therefore, applying graphene to composite materials can significantly improve the conventional properties of composite materials such as strength, thermal conductivity, and electrical conductivity, and prepare ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L9/06C08K3/04C08K13/02C08J3/22C08C1/15
CPCC08C1/15C08J3/226C08J2307/00C08J2309/06C08J2407/00C08J2409/06C08K3/04C08L7/00C08L9/06C08L2205/025C08K13/02
Inventor 陶磊曹兰
Owner 青岛蓝湾烯碳材料科技有限责任公司
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