Carbon crystal electrothermal film and preparation method and application thereof

A technology of electrothermal film and carbon crystal, applied in heating element materials and other directions, can solve the problems of high energy consumption, infrared energy loss, poor particle size controllability, etc., and achieve the effects of low energy consumption, controllable energy consumption, and good flow ability.

Active Publication Date: 2020-04-10
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the microcrystalline carbon-based materials obtained by the conventional ball-milling carbon crystal technology have low particle size uniformity and poor particle size controllability, which makes the electrothermal conversion efficiency of nano-carbon crystal electric heating products low and consumes a lot of energy. Controllable change, resulting in the loss of part of the infrared energy

Method used

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  • Carbon crystal electrothermal film and preparation method and application thereof
  • Carbon crystal electrothermal film and preparation method and application thereof
  • Carbon crystal electrothermal film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the preparation method of the carbon crystal electric heating film of the present invention

[0040] (1) Preparation of carbon crystal microsphere powder:

[0041] (1-1) Add 7g of carbon fiber T300 to 200ml of ethanol, and mix;

[0042] (1-2) Add 1050 g of zirconia ball milling beads with a particle size of 0.1 mm to the mixture obtained in step (1-1) and perform ball milling until the particle size of the carbon fiber T300 is 10 nm to 100 μm and the particle size dispersibility index< 0.2, and then vacuum-dried at 45°C and -0.15MPa for 11h to obtain the carbon crystal microsphere powder with a particle size of 10nm-100μm;

[0043] (2) 7g of carbon crystal microsphere powder obtained in step (1) was added to 200ml of ethanol, and mixed uniformly under 400W ultrasound;

[0044] (3) 7g of polyethyl acrylate was added to the mixture obtained in step (2), and the mixture was uniformly mixed under 400W ultrasound;

[0045] (4) vacuum-drying the mixture obt...

Embodiment 2

[0049] Embodiment 2: the preparation method of the carbon crystal electric heating film of the present invention

[0050] (1) Preparation of carbon crystal microsphere powder:

[0051] (1-1) Add 9g of carbon nanotube material to 500ml of acetone, and mix;

[0052] (1-2) Add 157.5 g of zirconia ball milling beads with a particle size of 1 mm to the mixture obtained in step (1-1) and perform ball milling until the particle size of the carbon nanotube material is 10 nm to 100 μm and the particle size dispersibility The index is less than 0.2, and then vacuum-dried at 55°C and -0.05MPa for 13h to obtain the carbon crystal microsphere powder with a particle size of 10nm-100μm;

[0053] (2) 9g of carbon crystal microsphere powder obtained in step (1) was added to 500ml of acetone, and mixed uniformly under 400W ultrasound;

[0054] (3) 18g polyurethane was added to the mixture obtained in step (2), and the mixture was uniformly mixed under 400W ultrasonic wave;

[0055] (4) vac...

Embodiment 3

[0059] Embodiment 3: the preparation method of the carbon crystal electric heating film of the present invention

[0060] (1) Preparation of carbon crystal microsphere powder:

[0061] (1-1) 8g graphite material was added to 300ml acetone, and mixed;

[0062] (1-2) Add 2800 g of zirconia ball milling beads with a particle size of 0.1 mm to the mixture obtained in step (1-1) and perform ball milling until the particle size of the graphite material is 10 nm to 100 μm and the particle size dispersibility index < 0.2, and then vacuum-dried at 50°C and -0.05MPa for 12h to obtain the carbon crystal microsphere powder with a particle size of 10nm-100μm;

[0063] (2) 8g of carbon crystal microsphere powder obtained in step (1) was added to 300ml of acetone, and mixed uniformly under 300W ultrasound;

[0064] (3) 0.8g of polystyrene is added to the mixture obtained in step (2), and the mixture is uniformly mixed under 300W ultrasound;

[0065] (4) vacuum-drying the mixture obtaine...

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Abstract

The invention provides a preparation method of a carbon crystal electrothermal film, which comprises the following steps: (1) mixing carbon crystal microsphere powder with a solvent, and uniformly mixing under 100-400W ultrasonic waves; (2) mixing a thermoplastic polymer material with the mixture obtained in the step (1), and uniformly mixing under 100-400W ultrasonic waves; (3) carrying out vacuum drying on the mixture obtained in the step (2) at 45-55 DEG C and -0.15 to -0.05 MPa until the solvent is completely removed; (4) heating the material obtained in the step (3) to 50-200 DEG C, and carrying out heat preservation until the material is completely converted into a molten state; (5) carrying out hot press molding on the material obtained in the step (4) at 50-300 DEG C and 1-500 MPafor 0.5-1 hour, and then cooling to 25 DEG C; and (6) pasting an insulating film and a copper electrode on the surface of the material obtained in the step (5), and pressing to obtain the carbon crystal electrothermal film. The prepared carbon crystal electric heating material can further improve the infrared wave emission efficiency of a nano carbon crystal electric heating product, the wave bandis controlled to range from 0.8 micrometer to 4 micrometers, and long-distance heating is achieved.

Description

technical field [0001] The invention belongs to the technical field of electrothermal materials, and in particular relates to a carbon crystal electrothermal film, a preparation method and application thereof. Background technique [0002] At present, electric heating is one of the most environmentally friendly heating methods. The electric heating equipment sold on the market mainly includes electric heaters, heating cables, electric heating ceramic sheets, etc. Among them, the metal resistance wires of electric heaters and heating cables have high density and high energy consumption, while electric heating ceramic sheets are slow to heat up and brittle. Therefore, these electric heating devices all have shortcomings. [0003] As the world pays attention to environmental protection issues, environmentally friendly electric heating products are an inevitable trend for future development. Further, with the needs of life and production, not only the electrothermal device is ...

Claims

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Application Information

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IPC IPC(8): H05B3/14
CPCH05B3/14
Inventor 王云明符岳周华民黄志高李德群张云陈丹赵虎
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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