Water-based graphene composite conductive paste, manufacturing method of paste and graphene heating film

A water-based graphene and composite conductive technology, which is applied in the direction of conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, electric heating devices, etc., can solve instability, poor thixotropy, easy clusters and Solve problems such as precipitation, achieve stable and reliable square resistance, excellent electrical conductivity, and stable and uniform heating

Pending Publication Date: 2022-07-22
江苏思峻机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Graphene conductive paste is the key raw material for preparing graphene heating film. However, due to the limitation of dispersion process and formula, there are still many problems to be solved in the production and storage of graphene conductive paste.
Specifically, the common problems of the existing graphene conductive paste mainly include: the poor thixotropy of the paste makes the paste prone to clusters and precipitation; the warranty period is short, and it is easy to deteriorate and stink; The resistance value is high and unstable, etc.

Method used

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  • Water-based graphene composite conductive paste, manufacturing method of paste and graphene heating film
  • Water-based graphene composite conductive paste, manufacturing method of paste and graphene heating film
  • Water-based graphene composite conductive paste, manufacturing method of paste and graphene heating film

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Effect test

Embodiment 1

[0032] Formulation and raw materials

[0033] Deionized water (purity 99.99%), the percentage content is 47%; graphene powder (5-10 layers), the percentage content is 3%; expanded graphite powder (particle size: ≤ 10μm), the percentage content is 25%; Carbon black powder (particle size: ≤20μm), the percentage content is 10%; sulfonated castor oil, the percentage content is 1.1%; CMC carboxymethyl cellulose, the percentage content is 0.5%; technical grade urea, the percentage content is 0.3 %; caprolactam tablets, the percentage content is 0.6%; ammonia water (25%), the percentage content is 0.3%; non-ionic surfactant (908 surfactant), the percentage content is 5.1%; defoamer (BASF, Germany, Foamaster 8034A) Foaming agent), the percentage content is 1.2%; the preservative (British Thor preservative Acticide MBS), the percentage content is 0.4%; the acrylic resin, the percentage content is 5.5%.

[0034] Preparation method and steps

[0035] Step 1: Proportioning and weighing:...

Embodiment 2

[0053] Formulation and raw materials

[0054] Deionized water (purity 99.99%), the percentage content is 65%; graphene powder (5-10 layers), the percentage content is 1%; flake graphite powder (particle size: ≤10μm), the percentage content is 11%; Carbon black powder (particle size: ≤20μm), the percentage content is 6%; talc, the percentage content is 1%; sulfonated castor oil (emulsifier), the percentage content is 1.1%; lauric acid polyoxyethylene ether (emulsified agent), the percentage content is 1.5%; CMC carboxymethyl cellulose, the percentage content is 0.5%; technical grade urea (dispersing agent), the percentage content is 0.2%; β-naphthalenesulfonate sodium formaldehyde condensate (dispersing agent), The percentage content is 0.6%; 25% ammonia water (pH regulator), the percentage content is 0.3%; 908 surfactant (non-ionic surfactant), the percentage content is 4.7%; defoaming agent (Germany BASF Foamaster8034A defoamer) , the percentage content is 1.2%; the preserva...

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Abstract

The invention belongs to the technical field of electric heating materials, and particularly relates to water-based graphene composite conductive paste, a manufacturing method of the paste and a graphene heating film. The conductive slurry contains deionized water, graphene powder, graphite powder, carbon black powder, an emulsifier, a thickener, a dispersant, a pH regulator, talcum powder, a nonionic surfactant, a defoaming agent, a preservative and a binder. The graphene powder, the graphite powder and the carbon black powder in the conductive paste are fully refined and uniformly dispersed, are not clustered or precipitated, are not easy to deteriorate and stink, and are longer in shelf life. The prepared graphene heating film can obtain lower sheet resistance and better resistance stability, and the sheet resistance can be modulated according to requirements.

Description

technical field [0001] The invention belongs to the technical field of electric heating materials, and in particular relates to an aqueous graphene composite conductive slurry, a manufacturing method of the slurry, and a graphene heating film. Background technique [0002] In recent years, electric heating products have developed rapidly, the application fields of electric heating products have been continuously expanded, and the popularity has become higher and higher. Since electric heating materials are the key core of electric heating products, with the continuous popularization of electric heating products, the market requirements for electric heating materials are getting higher and higher and more diversified. Graphene has stable properties, light weight, excellent electrical conductivity, and rapid and uniform heat generation after electrification, so it has considerable prospects as a heating material. At present, graphene heating products on the market mainly use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/18H01B13/00H05B3/14H05B3/34
CPCH01B1/18H01B13/00H05B3/34H05B3/145
Inventor 刘金章吕建伟
Owner 江苏思峻机械设备有限公司
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