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A kind of ultra-thin low-voltage electrothermal film material in low temperature environment and preparation method thereof

A low-temperature environment, electrothermal film technology, applied in electrothermal devices, ohmic resistance heating, electrical components, etc., can solve the problems of complex equipment, less research, affecting electrical conductivity, etc., to improve the ability to withstand extreme environments, and the preparation process is simple. The effect of good electric heating performance

Active Publication Date: 2021-10-01
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reduction degree of graphene directly determines the level of its electrical conductivity, and there is still no simple preparation method for graphene with good electrical conductivity.
The conductivity of graphene obtained by the Hummers method is greatly affected by the degree of reduction and the reduction method - graphene prepared by thermal reduction has better electrical conductivity, but thermal reduction at least 1500 ° C or above has excellent electrical conductivity. It is very energy-consuming and time-consuming, and it is not conducive to re-dispersion and utilization; while the equipment required by the CVD method is complex, and the safety is not high, which is not conducive to the re-dispersion, molding and utilization of graphene
[0005] Titanium carbide (Ti 3 C 2 T x ) is a hot spot in recent research, it is a new type of solution-dispersible two-dimensional nanomaterials formed from transition metal carbides and nitrides, which are widely used as electromagnetic shielding due to their unique sheet structure and ultra-high electrical conductivity The material has excellent conductivity, film-forming properties, hydrophilicity, and strong interaction with polymers. Compared with graphene, which is also a two-dimensional sheet material, its production process is simple, and its theoretical conductivity is easy to achieve. And it is easier to disperse in solvents, but there are relatively few studies in the field of electrothermal
Using two-dimensional lamellar conductive fillers alone to prepare conductive polymers will affect their electrical conductivity due to the gaps between the lamellar materials

Method used

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  • A kind of ultra-thin low-voltage electrothermal film material in low temperature environment and preparation method thereof
  • A kind of ultra-thin low-voltage electrothermal film material in low temperature environment and preparation method thereof
  • A kind of ultra-thin low-voltage electrothermal film material in low temperature environment and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0027] The implementation of the new ultra-thin voltage low-temperature resistant electric heating film is an electric heating film prepared by vacuum suction and filtration using polymer substrates, solvent water, titanium compounds, and linear conductive fillers as raw materials. Among them, the polymer matrix is ​​selected from cellulose, the titanium series compound is selected from titanium carbide, and the linear conductive filler is selected from carbon nanotubes, which are prepared according to the following steps:

[0028] Step 1: At 60°C, add 40 parts by mass of cellulose to a three-necked flask equipped with a stirrer, a reflux condenser and solvent water, and stir for 4 hours after the addition is completed to completely dissolve to obtain a cellulose solution;

[0029] Step 2: Take the cellulose solution obtained in step 1, add 40 parts by mass of titanium carbide and 20 parts by mass of carbon nanotubes to it, and then ultrasonically stir the mixed conductive fill...

Embodiment 2

[0035] The new ultra-thin voltage and low-temperature resistant electric heating film is an electric heating film prepared by vacuum suction and filtration using a polymer matrix, solvent water, titanium compounds, and linear conductive fillers as raw materials. Among them, polyvinyl alcohol is selected as the polymer matrix, titanium nitride is selected as the titanium compound, and carbon fiber is selected as the linear conductive filler, which is prepared according to the following steps:

[0036] Step 1: At 70°C, add 50 parts by mass of polyvinyl alcohol to a three-necked flask equipped with a stirrer, a reflux condenser and solvent water, and stir for 5 hours after the addition is completed to completely dissolve it to obtain a cellulose solution;

[0037] Step 2: Take the polyvinyl alcohol solution obtained in step 1, add 35 parts by mass of titanium nitride and 15 parts by mass of carbon fiber, and then ultrasonically stir the mixed conductive filler for 2 hours to make ...

Embodiment 3

[0043] The implementation of the new ultra-thin voltage low-temperature resistant electrothermal film is an electrothermal film prepared by vacuum suction and filtration using a polymer matrix, solvent water, titanium compounds, and linear conductive fillers as raw materials. Among them, polyethylene glycol is selected as the polymer matrix, titanium carbonitride is selected as the titanium compound, and silver nanowires are selected as the linear conductive filler, which is prepared according to the following steps:

[0044] Step 1: At 80°C, add 60 parts by mass of cellulose to a three-necked flask equipped with a stirrer, a reflux condenser and solvent water, and stir for 6 hours after the addition is completed to completely dissolve it to obtain a cellulose solution;

[0045] Step 2: Take the polyethylene glycol solution obtained in step 1, add 30 parts by mass of titanium carbonitride and 10 parts by mass of silver nanowires, and then ultrasonically stir the mixed conductiv...

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PUM

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Abstract

The invention discloses an ultra-thin low-voltage electric heating film material in a low-temperature environment and a preparation method thereof. The preparation method of the electric heating film of the present invention is simple; the electric heating effect is good, not only has good electric heating performance at room temperature and low voltage, but also has good electric heating performance in the environment of minus 50°C; and the electric heating film has an ultra-thin thickness, which can Widely used in electronic appliances and other fields.

Description

technical field [0001] The invention relates to an ultra-thin low-voltage electric heating film material in a low temperature environment and a preparation method thereof, belonging to the field of electric heating. Background technique [0002] The Internet has promoted the development of all kinds of smart electronic products, from key-press mobile phones to smart machines, from heavy desktop computers to thin and light notebooks, many electronic products have changed the way people live, work and play, many people can choose mobile office , Take a portable tablet computer on business trips and travels, and you can work and entertain anytime, anywhere. Electronic products have brought a lot of convenience to our lives, but it is reported that many electronic products such as tablets and mobile phones cannot be charged in winter. The reason for this situation is that the low temperature has some impact on the interior of the electronic product, making it impossible to char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/02C08L29/04C08L71/02C08K3/14C08K3/04C08K3/28C08K7/06C08J5/18H05B3/34
CPCC08J5/18C08J2301/02C08J2329/04C08J2371/02C08K3/14C08K3/28C08K7/06C08K2201/011C08K3/041H05B3/34
Inventor 汪碧波田文祥宋磊胡源
Owner UNIV OF SCI & TECH OF CHINA
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