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

A self-dispersing, water-based technology, applied in conductive coatings, electric heating devices, ohmic resistance heating, etc., can solve the problems of difficult to obtain high volume filling rate, easy agglomeration of carbon materials, poor electrical conductivity, etc. Effect of volume filling rate and excellent electrical conductivity

Active Publication Date: 2021-07-27
佛山(华南)新材料研究院
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  • Abstract
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  • Claims
  • Application Information

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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

Method used

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

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Embodiment 1

[0039] This embodiment provides a self-dispersing water-based electric heating slurry, which includes the following components by weight: 35% water-based auxiliary dispersion resin, 5% conductive nano-carbon black, 20% conductive graphite, 6% graphene, 10% film-forming agent , 0.1% defoamer, 0.1% leveling agent, 23.8% deionized water.

[0040] In a preferred embodiment, the water-based dispersing aid resin is one or more of non-ionic polyether-polyurethane resin, methacrylic-terminated polyether-polyurethane comb polymer, and polyether-polyurethane-terminated polymer The purpose is to introduce anchor groups and hydrophilic groups in the molecular chain, where the anchor groups are mainly hydrocarbon chains and aryl groups, and the hydrophilic groups are mainly hydroxyl groups and ether chains. In addition, in the present embodiment, It can effectively introduce hydroxyl groups and ether chains into the system. The introduction of hydroxyl groups enables resin molecules to for...

Embodiment 2

[0060] A self-dispersing water-based electric heating slurry, which includes the following components by weight percentage: 20% water-based auxiliary dispersion resin, 25% conductive nano-carbon black, 10% conductive graphite, 2% graphene, 5% film-forming agent, 0.2% disinfectant Foaming agent, 0.8% leveling agent, 47% deionized water.

[0061] In a preferred embodiment, the water-based dispersing aid resin is one or more of non-ionic polyether-polyurethane resin, methacrylic-terminated polyether-polyurethane comb polymer, and polyether-polyurethane-terminated polymer The purpose is to introduce anchor groups and hydrophilic groups in the molecular chain, where the anchor groups are mainly hydrocarbon chains and aryl groups, and the hydrophilic groups are mainly hydroxyl groups and ether chains. In addition, in the present embodiment, It can effectively introduce hydroxyl groups and ether chains into the system. The introduction of hydroxyl groups enables resin molecules to fo...

Embodiment 3

[0081] A self-dispersing water-based electric heating slurry, which includes the following components in weight percentage: 30% water-based auxiliary dispersion resin, 10% conductive nano-carbon black, 12% conductive graphite, 3% graphene, 5% film-forming agent, 1% disinfectant Foaming agent, 0.7% leveling agent, 38.3% deionized water.

[0082] In a preferred embodiment, the water-based dispersing aid resin is one or more of non-ionic polyether-polyurethane resin, methacrylic-terminated polyether-polyurethane comb polymer, and polyether-polyurethane-terminated polymer The purpose is to introduce anchor groups and hydrophilic groups in the molecular chain, where the anchor groups are mainly hydrocarbon chains and aryl groups, and the hydrophilic groups are mainly hydroxyl groups and ether chains. In addition, in the present embodiment, It can effectively introduce hydroxyl groups and ether chains into the system. The introduction of hydroxyl groups enables resin molecules to fo...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D5/24C09D7/61C09D7/20H05B3/14
CPCC08K2201/001C08K2201/011C08K2201/014C09D5/24C09D175/08C09D7/20C09D7/61H05B3/145C08K3/04C08K3/042C08K13/02
Inventor 刘耀春樊小军
Owner 佛山(华南)新材料研究院
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