Flexible heating sheet and manufacturing method thereof

A heating sheet, flexible technology, applied in the field of flexible heating sheet and its preparation, can solve the problems of poor mechanical properties, low electrothermal conversion efficiency, poor flexibility and plasticity of the heating sheet, and achieve uniform heating, light weight, and excellent electrical conductivity. Effect

Active Publication Date: 2020-04-21
SHENZHEN XIWAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a flexible heating sheet, which aims to solve the technical problems of existing heating sheets such as poor mechanical properties, easy breakage, poor flexibility and plasticity, poor safety performance, and low electrothermal conversion efficiency.

Method used

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  • Flexible heating sheet and manufacturing method thereof
  • Flexible heating sheet and manufacturing method thereof
  • Flexible heating sheet and manufacturing method thereof

Examples

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preparation example Construction

[0037] The embodiment of the present invention provides a method for preparing a flexible heating sheet, comprising the following steps:

[0038] S10. Obtain a carbon nanotube fiber bundle and a substrate, and arrange the carbon nanotube fiber bundle on the substrate according to a preset circuit diagram to obtain a substrate with a fiber circuit diagram;

[0039] S20. Depositing a rubber mixed material on the surface of the side of the substrate where the fiber circuit pattern is arranged, so that the area of ​​the fiber circuit pattern arranged on the substrate except the end of the carbon nanotube fiber bundle is solid-sealed on the surface In the above rubber compound material, a heating sheet is formed on the substrate;

[0040] Wherein, the rubber compound material includes rubber and curing agent.

[0041]The preparation method of the flexible heating sheet provided by the embodiment of the present invention, first, arrange the carbon nanotube fiber bundles on the subs...

Embodiment 1

[0068] A flexible heating sheet, comprising the steps of:

[0069] ① Deposit a catalyst layer on the substrate, place it in a chemical vapor deposition reactor and pass in a protective gas, heat up to 700°C, then pass in a carbon source gas, and react for about 5 minutes to generate uniformly grown carbon nanotube arrays on the substrate Pull out a carbon nanotube film with a width of 7.5cm from the carbon nanotube array, use a twist meter to twist the above film, and the twist is 1300tpm to obtain a carbon nanotube fiber filament; 10 carbon nanotube fiber filaments are merged forming a bundle of carbon nanotube fiber bundles to obtain carbon nanotube fiber bundles.

[0070] ② Obtain a template, the holes on the template are equipped with rivets, the electrode pads are located on the gasket, and the single carbon nanotube fiber bundle is wound according to the circuit diagram, as shown in the attached figure 1 shown, and bond the end to the electrode sheet.

[0071] ③ Place...

Embodiment 2

[0074] A flexible heating sheet, comprising the steps of:

[0075] ① Deposit a catalyst layer on the substrate, place it in a chemical vapor deposition reactor and pass in a protective gas, heat up to 700°C, then pass in a carbon source gas, and react for about 5 minutes to generate uniformly grown carbon nanotube arrays on the substrate Pull out a carbon nanotube film with a width of 7.5cm from the carbon nanotube array, use a twist meter to twist the above film, and the twist is 1300tpm to obtain a carbon nanotube fiber filament; 5 carbon nanotube fiber filaments are merged forming a bundle of carbon nanotube fiber bundles to obtain carbon nanotube fiber bundles.

[0076] ② Obtain a template, the holes on the template are equipped with rivets, the electrodes are located on the spacers, and the two carbon nanotube fiber bundles are wound according to the circuit diagram, as shown in the attached figure 2 shown, and bond the end to the electrode sheet.

[0077] ③ Place the ...

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Abstract

The invention belongs to the technical field of heat conduction materials, and particularly relates to a manufacturing method of a flexible heating sheet. The method comprises the following steps: acquiring a carbon nanotube fiber bundle and a substrate, and arranging the carbon nanotube fiber bundle on the substrate according to a preset circuit diagram to obtain the substrate on which a fiber circuit diagram is arranged; and depositing a rubber mixed material on a surface of one side, provided with the fiber circuit diagram, of the substrate so that areas, except ends of the carbon nanotubefiber bundles, in the fiber circuit diagram arranged on the substrate are fixedly sealed in the rubber mixed material, and forming the heating sheet on the substrate, wherein the rubber mixed materialincludes a rubber and a curing agent. The manufacturing method of the flexible heating sheet provided by the invention is simple in process flow, flexible and convenient to operate, and suitable forindustrial large-scale production and application.

Description

technical field [0001] The invention belongs to the technical field of heat-conducting materials, and in particular relates to a flexible heating sheet and a preparation method thereof. Background technique [0002] Traditional thermal pads basically use silica gel or other polymer materials as the matrix material, and by filling the thermal conductive material, the composite material has a thermal conduction channel, thereby playing the role of heat conduction of the material. There are many types of heat-conducting materials, such as metal wires, heat-conducting powders, carbon materials, and the like. Among them, the heat-generating sheet with heat-conducting powder as the heat-conducting material, the more powder filled, the more reasonable the particle size of the powder, the more heat-conducting channels, the higher the thermal conductivity of the corresponding material, but as more and more filling materials , the mechanical properties of the product, especially the ...

Claims

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Application Information

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IPC IPC(8): H05B3/14C08L83/04C08K3/04
CPCH05B3/146C08K3/041C08L83/04
Inventor 邓飞辛培培
Owner SHENZHEN XIWAN TECH CO LTD
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