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Flexible heating sheet and preparation 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: 2022-05-27
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 preparation method thereof
  • Flexible heating sheet and preparation method thereof

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preparation example Construction

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

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

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

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

[0041]In the preparation method of the flexible heating sheet provided by the embodiment of the present invention, first, carbon nanotube fiber bundles are arranged on a ...

Embodiment 1

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

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

[0070] ② Obtain a template, the holes on the template are equipped with rivets, the electrode sheet is 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 glue the ends to the electrode pads.

[0...

Embodiment 2

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

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

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

[007...

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Abstract

The invention belongs to the technical field of heat-conducting materials, and in particular relates to a method for preparing a flexible heating sheet, comprising the steps of: obtaining carbon nanotube fiber bundles and a substrate, and arranging the carbon nanotube fiber bundles on the substrate according to a preset circuit diagram , to obtain a substrate with a fiber circuit diagram; a rubber mixed material is deposited on the surface of one side of the substrate with a fiber circuit diagram, so that the end of the carbon nanotube fiber bundle is removed from the fiber circuit diagram on the substrate. The outer area is solidly sealed in the rubber compound material to form a heating sheet on the substrate; wherein the rubber compound material includes rubber and a curing agent. The preparation method of the flexible heating sheet provided by the invention has simple technological process, flexible and convenient operation, and is suitable for industrialized large-scale production and application.

Description

technical field [0001] The invention belongs to the technical field of thermally conductive materials, and in particular relates to a flexible heating sheet and a preparation method thereof. Background technique [0002] The traditional thermal pads basically use silica gel or other polymer materials as the matrix material. By filling the thermal conductive material, the composite material has a thermal conduction channel, so as to play the role of thermal conduction of the material. There are many types of existing thermally conductive materials, such as metal wires, thermally conductive powders, carbon materials, and the like. Among them, for the heating sheet with thermally conductive powder as the thermally conductive material, the more powders filled, the more reasonable the powder particle size matching, the more thermally conductive channels, and the higher the thermal conductivity of the corresponding material, but as more and more filling materials are filled , the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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