Self-dispersion water-based electric heating slurry and preparation method thereof

Abstract

The invention provides self-dispersion water-based electric heating slurry and a preparation method thereof. The electric heating slurry is prepared from water-based dispersion-assisting resin, conductive nano carbon black, conductive graphite, graphene, a film-forming agent, an antifoaming agent, a leveling agent and deionized water. Anchoring groups and hydrophilic groups are introduced in the preparation process, so that the dispersion degree of the carbon material can be effectively increased, the water-based electric heating slurry which is uniformly dispersed and high in filling rate canbe obtained without additionally adding a dispersing agent, and due to the fact that a stable water-based system is formed, the slurry does not have the risks of layering, sedimentation, flocculationand the like in the subsequent storage process, the viscosity can be adjusted by adding water, the proportion and the effect of the dispersing agent do not need to be considered again, and the methodhas the advantages of being high in convenience and operability. The problems that a carbon material is prone to agglomeration and difficult to disperse in water-based slurry, high volume filling rate is difficult to obtain, and consequently conductivity is poor are generally solved, and the problem that preparation is complex due to the fact that a dispersing agent needs to be added is solved.

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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