A self-dispersing water-based electric heating slurry and its preparation method

Abstract

The invention provides a self-dispersing water-based electric heating slurry and a preparation method thereof, wherein the electric heating slurry comprises water-based auxiliary dispersion resin, conductive nano-carbon black, conductive graphite, graphene, film-forming agent, defoaming agent, and leveling agent , The composition of deionized water. The introduction of anchoring groups and hydrophilic groups during the preparation process can effectively increase the degree of dispersion of carbon materials. Without adding additional dispersants, a water-based electric heating slurry with uniform dispersion and high filling rate can be obtained, because it forms a stable water-based system. There is no risk of delamination, sedimentation, flocculation, etc. during the subsequent storage of the slurry; and the viscosity can be adjusted by adding water without reconsidering the proportion and effect of the dispersant, which has the advantages of convenience and strong operability . In general, it solves the problem that carbon materials are easy to agglomerate and difficult to disperse in aqueous slurry, it is difficult to obtain a high volume filling rate, resulting in poor electrical conductivity, and the need to add a dispersant leads to complicated preparations.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a self-dispersing water-based electric heating slurry and a preparation method thereof. Background technique [0002] Conductive heating paste, also known as electrothermal paste, is a new type of functional paste with excellent electrothermal properties developed on the basis of conductive paste. At present, most electrothermal pastes use the method of filling high emissivity and high thermal conductivity inorganic materials in the basic bonding resin to obtain pastes with both high emissivity and high thermal conductivity. Most of the inorganic materials used are some Carbon nanomaterials, such as carbon nanotubes, graphene, nanocarbon spheres, nanoconductive carbon black, etc. However, these nano-carbon materials are easy to agglomerate and difficult to disperse in the slurry, especially in the water-based system, it is difficult to obtain a high volume filling rate, so it...

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Problems solved by technology

[0005] The invention proposes a self-dispersing water-based electric heating slurry and its preparation method to solve the problem that carbon materials are easy to agglomerate and difficult to disperse in the water-based slurry, especially in the water-based system, it is difficult to obtain a high volume filling rate, resulting in poor electrical conductivity. , and the need to add a dispersant

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