MXene-based water-based nano electric heating composite coating and preparation method thereof

Abstract

The invention relates to an MXene-based water-based nano electric heating composite coating and a preparation method thereof, and the MXene-based water-based nano electric heating composite coating is prepared by the following steps: by using a water-dispersible MXene nanosheet as a conductive filler, respectively using water-based polyurethane, water-based polyacrylate or water-based epoxy resin and MXene to prepare water dispersion liquids with certain mass fractions, adding the MXene dispersion liquid into the water-based resin according to a preset mass ratio of the water-based resin to the MXene under the stirring action, and continuously conducting stirring to enable water-based resin macromolecules to be fully and uniformly adsorbed on MXene nanosheets, so as to obtain the water-based resin ester-MXene nano electric heating composite coating. The prepared coating can be constructed through spraying, dip-coating, roller coating or dispensing and other methods, has excellent electric heating performance and heating regulation performance, is high in adhesive force and good in flexibility, has the resistivity capable of being regulated as required, is low in required voltage and high in temperature rise rate, is not limited by the surface appearance of a base material in use, and is wide in application range.

Description

technical field [0001] The invention belongs to the field of electrothermal coating materials, and relates to an MXene-based water-based nanometer electrothermal composite coating and a preparation method thereof. 3 C 2 T x MXene is a nanocomposite coating of conductive filler and a preparation method thereof. Background technique [0002] Electrothermal paint is a functional conductive paint that can generate Joule heat under the action of an applied voltage. The traditional electric heating material is generally a metal wire. Although it has excellent heating performance, it will cause uneven heating due to the gaps in its layout. At the same time, it cannot be used on special-shaped and small parts, which limits its application. Electrothermal paint can form a uniform conductive film on the surface of the components used, and is not limited by the shape of the surface, thus showing broad application prospects in the field of electrothermal materials. [0003] At pres...

AI Technical Summary

Problems solved by technology

However, the surface of these fillers lacks functional groups with affinity for water and other organic solvents, and they are difficult to disperse in water, solvents and polymer matrices to form a homogeneous system, nor can they form a strong bond with polymer molecular chains Force, so the resulting coatings have low filler levels and correspondingly low electrical conductivity

Moreover, most of the coatings based on these conductive fillers are dispersed in organic solvents, and the organic volatile gases generated during use will bring harm to the environment.

These deficiencies have limited the further development of environmentally friendly high-performance electrothermal coatings

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