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Grapheneelectrothermal material and preparation method thereof

An electrothermal material and graphene technology, applied in heating element materials, electrothermal devices, ohmic resistance heating, etc., can solve the problems of difficulty in dispersion and inability to fully utilize the electrical conductivity of graphene, and achieve stable resistance value, fast heating time, and electrical energy. The effect of high conversion efficiency

Inactive Publication Date: 2016-12-07
佛山杰致信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since graphene is prone to agglomeration and is not easily dispersed in most polymers, if it is directly mixed with polymer materials, the good electrical conductivity of graphene cannot be fully utilized.

Method used

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  • Grapheneelectrothermal material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] A graphene electrothermal material, comprising the following components by weight: 60 parts of epoxy resin, 5 parts of carbon fiber, 5 parts of carbon nanotube, 15 parts of graphene, and 3 parts of red phosphorus.

[0019] Further, the carbon nanotubes are single-walled carbon nanotubes or multi-walled carbon nanotubes with a length of 2-5 microns.

[0020] Further, the carbon fiber has a length of 10-20 microns and a thickness of less than 0.4 microns. The number of layers of graphene powder is less than 10, and the size is 1-10 microns.

[0021] The preparation method of above-mentioned graphene electrothermal material, comprises the steps:

[0022] (1) Weigh epoxy resin, carbon fiber, carbon nanotube, graphene, red phosphorus according to the above weight ratio. Place carbon fibers, carbon nanotubes, graphene, and red phosphorus in ethanol in sequence for ultrasonic dispersion to obtain a mixed solution;

[0023] (2) heating and melting the epoxy resin, adding the...

Embodiment 2

[0026] A graphene electrothermal material, comprising the following components by weight: 90 parts of silicon rubber, 10 parts of carbon fiber, 10 parts of carbon nanotubes, 20 parts of graphene, and 6 parts of phosphorus polyol.

[0027] Further, the carbon nanotubes are single-walled carbon nanotubes or multi-walled carbon nanotubes with a length of 2-5 microns. The carbon fiber has a length of 10-20 microns and a thickness of less than 0.4 microns. The number of layers of graphene powder is less than 10, and the size is 1-10 microns.

[0028] The preparation method of above-mentioned graphene electrothermal material, comprises the steps:

[0029] (1) Weigh silicone rubber, carbon fiber, carbon nanotubes, graphene, and phosphorus polyol according to the above weight ratio. Place carbon fibers, carbon nanotubes, graphene, and phosphorus polyols in ethanol in sequence for ultrasonic dispersion to obtain a mixed solution;

[0030] (2) heating and melting the silicone rubber,...

Embodiment 3

[0033] A graphene electrothermal material, comprising the following components by weight: 80 parts of polyurethane resin, 7 parts of carbon fiber, 8 parts of carbon nanotube, 18 parts of graphene, and 4 parts of phosphorus halide.

[0034] Further, the carbon nanotubes are single-walled carbon nanotubes or multi-walled carbon nanotubes with a length of 2-5 microns.

[0035] Further, the carbon fiber has a length of 10-20 microns and a thickness of less than 0.4 microns. The number of layers of graphene powder is less than 10, and the size is 1-10 microns.

[0036] The preparation method of above-mentioned graphene electrothermal material, comprises the steps:

[0037] (1) Weigh polyurethane resin, carbon fiber, carbon nanotube, graphene, phosphorus halide according to the above weight ratio. Place carbon fibers, carbon nanotubes, graphene, and flame retardants in ethanol for ultrasonic dispersion to obtain a mixed solution;

[0038] (2) heating the polyurethane resin, addin...

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Abstract

The invention discloses a grapheneelectrothermal material, which is prepared from the following components in parts by weight: 60 to 90 parts of polymer matrix, 5 to 10 parts of carbon fiber, 5 to 10 parts of carbon nanotube , 15 to 20 parts of graphene, and 3 to 6 parts of flame retardant. The polymer matrix is one of epoxy resin,silicone rubber and urethane resin. The grapheneelectrothermal material has stable electric resistance value and can uniformly generate heat, the electric energy conversion efficiency is up to over 88%, and the heating time is fast, and15 to 20 minutesgenerally.

Description

technical field [0001] The invention relates to electrothermal materials, in particular to a novel graphene electrothermal material and a preparation method thereof. Background technique [0002] Electric heating materials are mainly divided into electric heating alloy materials and polymer electric heating materials. Electrothermal alloy material appeared the earliest, with good electrical conductivity, usually small resistance, easy to generate high power and temperature, it is generally suitable for high temperature heating field. Polymer electrothermal material is an electrothermal material that adds conductive particles such as carbon fiber, graphite powder, and carbon nanotubes to polymer materials. Its resistance value is relatively high and it is suitable for low temperature heating. Moreover, it has good human affinity, and is especially suitable for heating and heat preservation devices that are in close contact with the human body, such as electric blankets and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L83/04C08L75/04C08K13/04C08K7/06C08K7/24C08K3/04C08K3/02C08K3/32H05B3/14
CPCC08K3/02C08K3/04C08K3/32C08K7/06C08K7/24C08K13/04C08K2003/026C08K2201/004C08K2201/011C08L2201/02H05B3/145C08L63/00C08L83/04C08L75/04Y02P20/10
Inventor 不公告发明人
Owner 佛山杰致信息科技有限公司
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