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Preparation method and application of low-voltage efficient nano carbon material electrothermal film

A nano-carbon material, electrothermal film technology, applied in electrothermal devices, ohmic resistance heating, heating element materials, etc., to achieve the effects of low energy consumption, easy film formation, and high mechanical strength

Inactive Publication Date: 2019-08-30
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process directly prints or sprays or coats the insulating layer with the mixed liquid. Since the mixed liquid has no binder, etc., it is easy to delaminate with the insulating layer and form a short circuit.

Method used

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  • Preparation method and application of low-voltage efficient nano carbon material electrothermal film
  • Preparation method and application of low-voltage efficient nano carbon material electrothermal film
  • Preparation method and application of low-voltage efficient nano carbon material electrothermal film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] (1) 0.203g multi-walled carbon nanotubes, 0.029g graphene and 0.348g cationic nanocellulose fibrils (that is, the mass ratio of each component is 35:5:60) are placed in a beaker, and then 0.05g Nano carbon material dispersant, and add 50g of distilled water, then ultrasonic treatment under 600W ultrasonic power for 5min and then magnetic stirring treatment at 1000r / min for 30min to prepare an aqueous solution containing carbon nanotubes, graphene and nanocellulose.

[0073] (2) The aqueous solution containing carbon nanotubes, graphene and nanocellulose prepared in step (1) is poured into the Buchner funnel of the vacuum suction filter device that has been assembled and is in operation (the funnel diameter is 110mm, The PTFE filter membrane has been placed in the funnel), and treated for 4 hours under a vacuum filtration pressure of 0.1 MPa to prepare a carbon nanotube-graphene-nanocellulose nanocarbon material electrothermal membrane positioned on the PTFE filter membra...

Embodiment 2

[0078] Carbon nanotube-graphene-nanocellulose nano-carbon material electrothermal film is prepared according to the method in Example 1, the difference is only that the consumption of multi-walled carbon nanotubes, graphene and cationic nanocellulose fibrils is respectively 0.116 g, 0.116g and 0.348g (that is, the mass ratio of each component is 20:20:60).

[0079] The performance test of the prepared carbon nanotube-graphene-nanocellulose nano-carbon material electric heating film shows that its breaking strength is 40.5MPa, and the maximum strain is 0.52%. The heating temperature reached 53.9°C in 3 minutes, and the electric-thermal radiation conversion efficiency was 37.4mW / °C when the voltage range was 4-20V.

Embodiment 3

[0081] Carbon nanotube-graphene-nanocellulose nano-carbon material electrothermal film is prepared according to the method in Example 1, the difference is only that the consumption of multi-walled carbon nanotubes, graphene and cationic nanocellulose fibrils is respectively 0.029 g, 0.203g and 0.348g (that is, the mass ratio of each component is 5:35:60).

[0082] The performance test of the prepared carbon nanotube-graphene-nanocellulose nanocarbon material electrothermal film shows that its breaking strength is 48.5MPa, the maximum strain is 0.9%; the conductivity is 1.17S / cm; when energized at 20V, The heating temperature reaches 39.7°C in 3 minutes, and the electric-thermal radiation conversion efficiency is 40.1mW / °C when the voltage range is 8-28V.

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Abstract

The invention provides a nano carbon material electrothermal film. The nano carbon material electrothermal film comprises the following raw materials: carbon nano-tubes, graphene and nano-cellulose. Through the cooperative use of the carbon nano-tubes, the graphene and the nano cellulose, the prepared nano carbon material electrothermal film has the advantages of low pressure and high efficiency.

Description

technical field [0001] The invention relates to the field of electrothermal materials, in particular to a low-voltage high-efficiency nano-carbon material electrothermal film and its preparation method and application. Background technique [0002] Electric heating wooden products with built-in electric heating layer are high-efficiency low-temperature radiation heating products, which are mainly formed by compounding carbon-based electric heating materials and wooden materials. Electric heating with built-in electric heating layer Wooden products use electricity as an energy source, and provide heat by converting electrical energy into thermal energy to achieve the heating function. This kind of wooden products maintains the excellent decorative and natural characteristics of wooden materials, and at the same time provides heat sources, which is in line with my country's electric heating development strategy and environmental protection trends. At present, the carbon fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/14H05B3/20H05B3/02H05B3/00
CPCH05B3/0019H05B3/02H05B3/145H05B3/20
Inventor 梁善庆王慧翀
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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