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Flexible electric heating film heating layer and preparation method thereof

An electric heating film and heating layer technology, applied in the direction of electric heating devices, ohmic resistance heating, electrical components, etc., can solve the problems of poor bending resistance, non-adjustable amount of heating layer materials, and easy falling off of fillers, etc.

Active Publication Date: 2021-03-26
SHENZHEN DELONG ELECTRICAL APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In order to overcome the defects of the electric heating film heating layer in the above-mentioned prior art, an object of the present invention is to provide a flexible electric heating film heating layer containing a composite polymer conductive The heating layer of the heating film has problems such as poor interface bonding, poor bending resistance, easy falling off of fillers, and non-adjustable amount of heating layer materials.

Method used

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  • Flexible electric heating film heating layer and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0091] Preparation of Composite Polymer Conductive Skeleton Material 1

[0092] 1) Add 2g of graphene composite nanomaterials loaded with 12wt% silver and 1.2g of carbon nanotubes into 200ml of 0.5wt% N-methylpyrrolidone aqueous solution under ice bath conditions, mechanically stir evenly; add 0.4g of polyethylene Alcohol powder into solution, after stirring, ultrasonically disperse for 5 minutes, and mix evenly to obtain nanomaterial dispersion.

[0093] 2) Under ice bath and nitrogen inert atmosphere, add 100g of acrylamide powder to the above nanomaterial dispersion, then add 0.5g of nanocellulose whiskers (about 100μm in length) and 6g of sodium hydroxide and stir for 15min; under stirring conditions, Then add 1.5g of methinebisacrylamide crosslinking agent, 0.9g of lauryl methacrylate, 0.1g of tetramethylethylenediamine catalyst, and then slowly add dropwise a solution containing 1.2g of ammonium persulfate, and continue to The reaction was stirred for 2h. The obtained ...

Embodiment 2

[0097] Preparation of Composite Polymer Conductive Framework Material 2

[0098] 1) Under ice bath conditions, add 1.8g of graphene composite nanomaterials containing 15wt% alumina and 1g of carbon nanotubes into 190ml of 0.5wt% N-methylpyrrolidone aqueous solution, and stir evenly; add 0.3g of polyethylene Alcohol powder into solution, after stirring, ultrasonically disperse for 5 minutes, and mix evenly to obtain nanomaterial dispersion.

[0099] 2) Add 80g of acrylamide powder to the above nanomaterial dispersion in an ice bath and nitrogen inert atmosphere, then add 0.5g of nanocellulose whiskers (about 50μm in length) and 5g of sodium hydroxide and stir for 15min; under stirring conditions, Then add 1.2g of methinebisacrylamide crosslinking agent, 0.8g of methacrylic acid, 0.1g of tetramethylethylenediamine catalyst, and then slowly dropwise add an aqueous solution containing 1g of potassium persulfate, and continue to stir for 2 hours after the dropwise addition . The ...

Embodiment 3

[0102] Preparation of electrothermal paste

[0103] 1) Add an equal volume of 15wt% sodium persulfate aqueous solution to 50ml of 5wt% pyrrole solution under ice bath conditions, stir slightly, then add 12.5g conductive carbon black powder (particle size about 5μm), stir and react under ice bath conditions After 6 hours of reaction, stand still for 12 hours; centrifuge to obtain black carbon black-doped polypyrrole nanoparticles, which are dispersed in 30 g of 30wt% graphite aqueous dispersion to obtain carbon black-doped polypyrrole particle / graphite dispersion.

[0104] 2) Mix the emulsion type polydimethylsiloxane and benzoyl peroxide at a mass ratio of 100:0.5 at room temperature, stir magnetically for 15 minutes, and let it stand for 2 hours to obtain a transparent polydimethylsiloxane polymer sol About 50g;

[0105] Add 10g of polyvinylidene fluoride resin powder into 90g of N,N-dimethylacetamide solution, and form PVDF resin glue by stirring under heating conditions. ...

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Abstract

The invention discloses a flexible electric heating film heating layer containing a composite high-molecular polymer conductive framework material and a preparation method thereof, and the flexible electric heating film heating layer is prepared by dipping the composite high-molecular polymer conductive framework material in electric heating slurry, curing and then carrying out hot pressing treatment. The composite high-molecular polymer conductive framework material is a flexible porous material and has a continuous three-dimensional porous structure; and the material comprises a first high-molecular polymer, a second conductive high-molecular polymer (high-molecular conductive polymer), a doped graphene-based composite nanosheet material and a carbon nanotube. The flexible heating film heating layer prepared by the method can overcome the problems that an electric heating layer in the prior art is poor in interface bonding property and bending resistance, filler is easy to fall off,the material consumption of the heating layer is not adjustable and the like.

Description

technical field [0001] The invention relates to a flexible electric heating film, in particular to a flexible composite electric heating film heating layer and a preparation method thereof. It belongs to the field of electric heating film materials. Background technique [0002] With the development of intelligent technology, electrothermal materials have been widely used in various fields. In daily life, low-temperature and low-pressure flexible electric heating film is becoming more and more popular as an emerging product in the market. For example, it is widely used in textile materials, and products such as electric heating gloves and electric heating vests have been developed. The flexible electrothermal film is soft and thin, has good tensile strength, good folding resistance, and wide range of operating voltage. It can be used in many aspects of daily life when used for low-temperature heating. For example, the electrothermal film obtained by placing metal heating e...

Claims

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Application Information

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IPC IPC(8): H05B3/14H05B3/12H05B3/34
CPCH05B3/12H05B3/146H05B3/34
Inventor 冯瑞聪
Owner SHENZHEN DELONG ELECTRICAL APPLIANCE CO LTD
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