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Graphene-based thermosensitive electrothermal film and forming and curing method

A curing method and electric heating film technology, which is applied in the direction of electric heating devices, electrical components, ohmic resistance heating, etc., can solve the problems that the uniformity and stability of the electric heating film need to be improved, the viscosity is not easy to control, pollute the environment, etc., and achieve rapid heating and effective heating. Heat generation, improved stability, and high heat conversion efficiency

Active Publication Date: 2021-07-27
牛墨石墨烯应用科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The binder or film-forming substance used in the organic point heating coating needs to be dissolved in an organic solvent, and then after drying and curing, the organic solvent in the coating volatilizes to obtain the target coating. The resulting coating has good thermal conductivity, but the organic solvent volatilization, seriously polluting the environment
[0004] The viscosity of the water-based heating coating used is difficult to control during the coating process, and the uniformity and stability of the obtained electric heating film need to be improved

Method used

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  • Graphene-based thermosensitive electrothermal film and forming and curing method

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Embodiment 1

[0035] This embodiment discloses a graphene-based thermosensitive electrothermal film and its curing molding method. The coating components and dosage used are shown in Table 1 in detail. The obtained coating of the present invention is mixed with deionized water, wherein the mass ratio of coating and deionized water is 1:1, water-soluble epoxy resin, sodium carboxymethyl cellulose, carbon black, graphene, conductive filler nanoparticles are mixed in Stir at 300rmp for 2min, add an appropriate amount of additives and stir at a constant speed of 500rmp for 10min to prepare a conductive coating, and evenly coat the conductive coating on the glass substrate; the thickness of the coating is about 100μm; the obtained coating is dried in a vacuum oven Bake until the quality remains unchanged, and the baking temperature is 60°C to obtain the target electric heating layer.

[0036] The quality of auxiliary agent sodium lauryl sulfate is 1% of water-soluble epoxy resin quality in the p...

Embodiment 2

[0039] The main difference between this embodiment and embodiment 1 is shown in Table 1;

[0040] In this embodiment, the baking temperature is 70°C.

[0041] The quality of auxiliary agent sodium lauryl sulfate is 2% of water-soluble epoxy resin quality in the present embodiment;

[0042] The mass of sodium alginate is 8% of the mass of water-soluble epoxy resin.

Embodiment 3

[0044] The main difference between this embodiment and embodiment 1 is shown in Table 1;

[0045] In this embodiment, the baking temperature is 80°C.

[0046] The quality of auxiliary agent sodium lauryl sulfate is 3% of water-soluble epoxy resin quality in the present embodiment;

[0047] The mass of sodium alginate is 10% of the mass of water-soluble epoxy resin.

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Abstract

The invention discloses a graphene-based thermosensitive electrothermal film. The thermosensitive electrothermal film comprises the following substances in parts by mass: 30-45 parts of water-soluble epoxy resin; 15 to 25 parts of sodium carboxymethyl cellulose; 10 to 30 parts of carbon black; 1 to 5 parts of graphene; 0.2 to 3 parts of conductive filler nanoparticles; and a proper amount of auxiliaries. The invention further discloses a forming and curing method of the electrothermal film. The aqueous system obtained in the invention has the advantages of uniform mixing, appropriate viscosity, low-temperature curing, and stable structure in the heating-cooling circulation process.

Description

technical field [0001] The invention relates to the technical field of electrothermal film, in particular to a thermosensitive electrothermal film based on graphene and a molding and curing method. Background technique [0002] Electrothermal composite materials are mainly used in intelligent heating, electromagnetic shielding and current limiting protection, and are widely used in chemical industry, electronics, electrical appliances, machinery manufacturing, agriculture and daily life. [0003] Electric heating coatings are composed of base materials, dispersion media, additives and conductive fillers. Existing allusion thermal coatings are divided into organic electrical heating coatings and inorganic electrical heating coatings due to the difference in film-forming substances. The binder or film-forming substance used in the organic point heating coating needs to be dissolved in an organic solvent, and then after drying and curing, the organic solvent in the coating vola...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/34H05B3/10
CPCH05B3/34H05B3/12Y02B30/00
Inventor 陈大波杨跃仁
Owner 牛墨石墨烯应用科技有限公司
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