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A kind of high elastic electrothermal composite film and preparation method thereof

An electrothermal and composite film technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the complex processing technology of metal electrothermal film, the heavy quality of electrothermal materials, and affect the application of electrothermal materials and other problems, to achieve the effect of strong designability, stable electric heating performance, and stable and uniform heating

Inactive Publication Date: 2019-02-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Later, people invented inorganic non-metallic ceramic heating materials and materials with positive temperature coefficient (PTC), but the processing technology of metal electric heating film is complicated and the cost is high; the conductive film of inorganic material is brittle and can only be made into Rigid film; electrothermal film based on organic materials has become a product that cannot be replaced by other heating elements in certain application fields due to its good flexibility, conductivity and safety. It is used in household appliances, power electronics, communications, energy, aerospace, Smart wearables and other fields have broad application prospects
[0003] The electrothermal materials on the market have many shortcomings such as heavy weight, large volume, resistance to bending, and inability to stretch, which seriously affects the application of electrothermal materials in wearable fields or outdoor alpine protection.

Method used

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  • A kind of high elastic electrothermal composite film and preparation method thereof
  • A kind of high elastic electrothermal composite film and preparation method thereof
  • A kind of high elastic electrothermal composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: Garment lining elastic film

[0035] Such as figure 1 As shown, an electrothermal composite film includes an elastic film 1 and a flexible nano-conductive film 3 bonded to the upper side of the elastic film 1 by an adhesive 2, and the upper side of the flexible nano-conductive film 3 is bonded The agent 2 bonds another elastic film 1 .

[0036] The preparation method of the above-mentioned electrothermal composite film, the specific steps are:

[0037] Step 1: After immersing the carbon nanotube film in the graphene suspension for 3 hours, take it out, and let it dry naturally at room temperature to obtain a flexible nanoconductive film. Coat both ends of the flexible nanoconductive film with conductive silver glue, and wire the copper wire The electrode is inserted into the conductive silver glue, and the copper wire electrode is adhered to the conductive silver glue;

[0038] The selected size of the carbon nanotube film is 40*40mm 2 The carbon nanot...

Embodiment 2

[0044] Example 2: Elastic thermal insulation film for heating pipelines

[0045] Such as figure 2 As shown, an electrothermal composite film includes an elastic film 1 and a flexible nano-conductive film 3 bonded to the upper side of the elastic film 1 by an adhesive 2, and the upper side of the flexible nano-conductive film 3 is bonded The agent 2 bonds another elastic film 1 . The first and last ends of the electrothermal composite film are bonded to form a ring structure.

[0046] The preparation method of the above-mentioned electrothermal composite film, the specific steps are:

[0047] Step 1: Immerse the carbon nanotube film in the graphene suspension for 3 hours, take it out, and dry it naturally at room temperature to obtain a flexible nanoconductive film;

[0048] The carbon nanotube film is the same as in Example 1. The concentration of the graphene suspension is 2mg / ml, the immersion time is 3h, and the number of immersion times is 1 time.

[0049] Step 2: Use ...

Embodiment 3

[0054] Example 3: Anti-fog film for bathroom mirror

[0055] Such as image 3 As shown, an electrothermal composite film includes an elastic film 1 and a flexible nano-conductive film 3 bonded to the upper side of the elastic film 1 by an adhesive 2, and the upper side of the flexible nano-conductive film 3 is bonded The agent 2 bonds another elastic film 1 .

[0056] The preparation method of the above-mentioned electrothermal composite film, the specific steps are:

[0057] Step 1: Immerse the carbon nanotube film in the graphene suspension for 3 hours, take it out, and dry it naturally at room temperature to obtain a flexible nanoconductive film;

[0058] The carbon nanotube film with a size of 1m*10mm (Suzhou Institute of Nanotechnology and Nano-Bionics, Chinese Academy of Sciences) is selected for the carbon nanotube film, which is obtained from multi-walled carbon nanotubes. The diameter of the carbon nanotubes is 10-50nm, and the film thickness 20μm, porosity 75%, te...

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Abstract

The invention provides a high-elastic electric-induced-heating compound film and a preparation method thereof. The preparation method for the high-elastic electric-induced-heating compound film is characterized by comprising the following steps: 1) soaking a carbon nano tube film into a graphene suspension liquid for a period of time, and then taking out and naturally airing under room temperature, thereby obtaining a flexible nanometer conductive film; 2) taking an elastic film as an elastic adhering substrate, applying a certain tensile force to the two ends thereof, stretching for a certain elongation and then fixing, and coating the upper surface of the elastic adhering substrate with a layer of liquid elastic adhesive; 3) pressing and soaking the flexible nanometer conductive film on the liquid elastic adhesive and curing the adhesive under a certain condition; 4) releasing the tensile force applied to the elastic adhering substrate and driving the flexible nanometer conductive film to retract, thereby obtaining the electric-induced-heating compound film. The electric-induced-heating compound film acquired according to the preparation method has the advantages of light weight, high flexibility and high elasticity as well as excellent anti-ageing property, safety and long service life.

Description

technical field [0001] The invention relates to the field of electric heating film, more specifically, relates to the technical field of high elastic electric heating film. Background technique [0002] In the field of electric heating, there are three types: resistance heating, electromagnetic induction heating and microwave heating. The most widely used method is resistance heating. In order to improve the life of the heating wire, tungsten, copper, chromium, nickel and other high-temperature refractory metals have been discovered, and the life of the heating wire made of these materials has been increased by more than ten times. Later, people invented inorganic non-metallic ceramic heating materials and materials with positive temperature coefficient (PTC), but the processing technology of metal electric heating film is complicated and the cost is high; the conductive film of inorganic material is brittle and can only be made into Rigid film; electrothermal film based on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/28B32B27/30B32B27/40B32B25/04B32B7/10B32B3/08B32B1/08B32B33/00B32B37/10B32B37/12B32B38/00
CPCB32B1/08B32B3/08B32B7/10B32B9/007B32B9/043B32B9/045B32B27/28B32B27/30B32B27/40B32B33/00B32B37/10B32B37/1284B32B38/0012B32B2038/0028B32B2307/50B32B2307/554
Inventor 许福军谢惺高扬
Owner DONGHUA UNIV
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