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Bendable electrothermal film device based on graphene and preparation method thereof

An electric heating film, graphene technology, applied in the direction of electrical components, electric heating devices, heating element materials, etc.

Active Publication Date: 2021-09-07
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

Polyimide film can be used as an insulating layer when in use. The organic film has bending properties and can be bent, but generally it can only be used at lower temperatures.

Method used

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  • Bendable electrothermal film device based on graphene and preparation method thereof
  • Bendable electrothermal film device based on graphene and preparation method thereof
  • Bendable electrothermal film device based on graphene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment discloses a graphene-based bendable electrothermal film device. The specific components and mass parts are shown in Table 1. The specific preparation method includes the following steps:

[0032] Step 1, adding the above-mentioned various components according to the mass fraction into polytetrafluoroethylene and ball milling to mix evenly;

[0033] Step 2. Apply the mixture obtained in Step 1 evenly on the surface of the polyimide base layer, and let it stand for defoaming;

[0034] Step 3: heat curing to obtain the target electrothermal film device with an area of ​​100mm×100mm.

[0035] Wherein, after the polyimide base layer described in step 2 is formed into a film, a rubbing roller is used for directional friction to obtain a rough guide protrusion.

[0036] The cross-sectional structure of the obtained electrothermal film is detailed in figure 1 and figure 2 As shown, it includes a polyimide base layer 1 and an organic electrothermal film 2 coa...

Embodiment 2

[0038] The main differences between this embodiment and embodiment 1 are shown in Table 1.

Embodiment 3

[0040] The main differences between this embodiment and embodiment 1 are shown in Table 1.

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Abstract

The invention discloses a bendable electrothermal film device based on graphene. The bendable electrothermal film device comprises a polyimide base layer and an organic electrothermal film coating the surface of the base layer. The organic electrothermal film comprises the following components in parts by mass: 5-15 parts of graphene, 2-9 parts of an ionic liquid, 1-8 parts of multi-walled carbon nanotubes, 10-20 parts of carbon black particles, and 260-300 parts of polytetrafluoroethylene. The invention also discloses a preparation method of the electrothermal film device. The invention also discloses a preparation method of the electrothermal film device. The obtained electrothermal film is soft, bendable, stable in structure and heating and high in heating efficiency.

Description

technical field [0001] The invention relates to the field of electrothermal film devices, in particular to a graphene-based bendable electrothermal film device. Background technique [0002] The film-shaped electrothermal functional element is generally composed of three parts: the electrothermal functional film, the electrode and the substrate. The electrodes serve as conductors to reduce contact resistance and connect to a power source. The electrodes are mostly made of conductive paste, and can also be made of metal foil or wire. The main function of the substrate is to set off the electrothermal functional film, and it also acts as a heat conductor, heat insulator, and insulator. The nature of the matrix is ​​mainly determined according to the needs of product design, and there are no strict restrictions. However, making electrothermal functional films on angular and uneven surfaces will bring some disadvantages, such as skin effect on sharp parts; excessive unevenness...

Claims

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Application Information

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IPC IPC(8): C08J7/044C08L79/08C09D127/18C09D5/24C09D7/65B05D7/02B05D7/24H05B3/14H05B3/34
CPCC08J7/044C08J7/0427C09D127/18C09D5/24C09D7/65B05D7/02B05D7/24H05B3/34H05B3/14C08J2379/08C08J2427/18B05D2506/15C08L1/02C08K3/042C08K3/041C08K3/04Y02P20/10
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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