Graphene heating film and preparation method thereof

A technology of graphene heating film and graphene film, applied in the field of graphene heating film and its preparation, can solve the problems of long transfer time and low transfer rate, and achieve the effects of short transfer time, high transfer rate and simple preparation steps

Pending Publication Date: 2016-08-24

HANGZHOU PAPABEAR TECH CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

However, this method of using ice cubes to transfer graphene films has the disadvantages...

Method used

(1) adopt graphene film as heating film, have good heating stability, long service life is long, the advantage that heating rate is fast;

(2) adopt graphene film as heating film, uniformity is better, performance is more stable;

The present invention passes through certain temperature, and certain pressure applies uniform power to the graphene film of preparation for a long time, makes whole graphene film and PVC film, PE film or PET film bonding more firmly, can very The integrity of the entire ...

Abstract

The invention provides a graphene heating film and a preparation method thereof. The graphene heating film is characterized by comprising a first insulated waterproof layer, an electrode layer, a heating film layer and a second insulated waterproof layer, wherein the first insulated waterproof layer, the electrode layer, the heating film layer and the second insulated waterproof layer are pasted into an integral structure; and the heating film layer is a graphene film. The preparation method of the graphene heating film comprises the following steps: (1) fabricating the graphene film; (2) covering the second insulated waterproof layer with a bonding adhesive; (3) bonding the second insulated waterproof layer and the graphene film into a whole; (4) removing a metal substrate on the graphene film; (5) pasting the electrode layer on the graphene film; (6) pasting the first insulated waterproof layer on the electrode layer; and (7) connecting the electrode layer and a lead wire. According to the graphene heating film and the preparation method thereof provided by the invention, the heating efficiency is high; large-area transferring of the graphene film can be achieved; the transfer time is short; and the transfer rate is high.

Application Domain

Chemical industryGraphene +1

Technology Topic

Heating filmCvd graphene +4

Image

Examples

Experimental program(5)

Example Embodiment

[0066] Such as figure 2 As shown, a method for preparing a graphene heating film provided by the present invention includes the following process steps:

[0067] 1) The production of graphene film, the chemical vapor deposition method is used to prepare the graphene film on the surface of the metal substrate;

[0068] 2) Use spraying, brushing or rolling to cover the second insulating waterproof layer 4 with adhesive glue;

[0069] 3) Bonding the second insulating waterproof layer 4 covered with adhesive glue and the graphene film into a whole;

[0070] 4) Use mechanical peeling or electrochemical corrosion to remove the metal matrix on the graphene film to form a graphene film with an insulating and waterproof layer;

[0071] 5) Pasting the electrode layer 2 on the graphene film covered with the first insulating and waterproof layer 1;

[0072] 6) Paste the first insulating and waterproof layer 1 on the electrode layer 2;

[0073] 7) Connect the electrode layer 2 with the wire to prepare a graphene heating film.

[0074] Compared with the prior art, the preparation method of graphene heating film provided by the present invention has the following advantages:

[0075] (1) A large area transfer of graphene film can be realized;

[0076] (2) The graphene film has a short transfer time and a high transfer rate;

[0077] (3) In the manufacturing process of the graphene film, the metal substrate is selected to facilitate corrosion, so that the graphene film and the metal substrate are more convenient to peel off.

[0078] (4) The preparation steps of the entire graphene heating film are simple.

[0079] In the method for preparing graphene heating film provided by the present invention, the specific process steps are as follows:

[0080] 1) The production of graphene film, the chemical vapor deposition method is used to prepare the graphene film on the surface of the metal substrate;

[0081] Choose to prepare a layer of graphene film on the surface of the metal substrate (such as aluminum foil, copper foil or nickel foil) by chemical vapor deposition at a temperature of 25℃, atmospheric pressure, inert gas (such as helium, neon, etc.), sterile Grow in the environment for 15-20 hours to prepare a layer of graphene film with a thickness of 30-50 μm.

[0082] 2) Use spraying, brushing or rolling to cover the second insulating waterproof layer 4 with adhesive glue;

[0083] Choose one or more of polyurethane, polystyrene, epoxy resin and acrylate as the bonding glue, and use spraying, brushing or rolling on the second insulating waterproof layer 4 (such as PVC film, PE film) Or PET film) to prepare an adhesive layer with a thickness of about 150-280 μm.

[0084] 3) Bonding the second insulating waterproof layer 4 covered with adhesive glue and the graphene film into a whole;

[0085] Cover the surface of the graphene-grown metal substrate with PVC film, PE film or PET film with an adhesive layer. Under an environment with a temperature of 50℃ and a pressure of 50-150MPa, it will be covered with The second insulating and waterproof layer 4 of the adhesive layer is bonded to the graphene film as a whole.

[0086] 4) Use mechanical peeling or electrochemical corrosion to remove the metal matrix on the graphene film to form a graphene film with an insulating and waterproof layer;

[0087] By mechanical peeling or electrochemical corrosion, the metal matrix on the graphene film is removed to prepare a graphene film with PVC film, PE film or PET film;

[0088] Among them, the temperature of the electrochemical corrosion reaction is 30-70°C, the corrosion time is 3-10 hours, and the corrosion solution is an acidic solution of Cu. The corrosion reaction time is related to the thickness of the metal substrate and the electrochemical corrosion reaction temperature, and the metal substrate is completely corroded.

[0089] The corrosion solution can be copper chloride aqueous solution, copper sulfate aqueous solution or copper nitrate aqueous solution. Take copper chloride solution as an example, the corrosion conditions are as follows: copper chloride aqueous solution is 180-210g/L; hydrochloric acid solution is 40-55g/L, solution temperature is 30-45℃; current density is 2.1-7.8A/dm 2. The entire electrochemical corrosion process is a process in which the copper on the copper foil of the anode loses electrons and becomes copper ions, and the cathode copper ions gain electrons to become metallic copper.

[0090] When the copper chloride solution is 180g/L, the hydrochloric acid solution is 45g/L, and the solution temperature is 30℃, the current density is 3.5A/dm 2.

[0091] When the copper chloride solution is 195g/L, the hydrochloric acid solution is 50g/L, and the solution temperature is 40℃, the current density is 5A/dm 2.

[0092] When the copper chloride solution is 210g/L, the hydrochloric acid solution is 55g/L, and the solution temperature is 45℃, the current density is 7.8A/dm 2.

[0093] 5) Pasting the electrode layer 2 on the graphene film covered with the first insulating and waterproof layer 1;

[0094] Paste conductive electrodes of copper foil or silver paste with a width of 1-2 cm on both ends of the prepared graphene film.

[0095] 6) Paste the first insulating and waterproof layer 1 on the electrode layer 2;

[0096] Spread a layer of PVC film, PE film or PET film with a thickness of 0.2-0.6μm on the side of the electrode layer 2 that does not cover the first insulating and waterproof layer 1, and place it on a steel plate with a thickness of 2cm. Use a press In an environment with a temperature of 80°C and a pressure of 300 MPa, it is used for 3-5 hours to complete the adhesion of the insulating waterproof film on the other side of the graphene film.

[0097] 7) Connect the electrode layer 2 with the wire to prepare a graphene heating film.

[0098] The electrode layer 2 is connected with the wire to prepare a graphene heating film whose temperature is arbitrarily adjustable in the range of 30-110°C.

Example Embodiment

[0100] Example 1

[0101] 1) Choose to prepare a layer of graphene film on the surface of the metal substrate (such as aluminum foil, copper foil or nickel foil) by chemical vapor deposition at a temperature of 25°C, normal pressure, and inert gas (such as helium, neon, etc.) , Grow in a sterile environment for 15 hours, and prepare a layer of graphene film with a thickness of 30 μm;

[0102] 2). Choose one or more of polyurethane, polystyrene, epoxy resin and acrylate as the adhesive, and spray, brush or roll on the second insulating waterproof layer 4 (such as PVC film , PE film or PET film) prepare an adhesive layer with a thickness of about 150-280μm;

[0103] 3). Cover the surface of the graphene-grown substrate with PVC film, PE film or PET film with a bonding layer, and apply it for 5 hours under an environment with a temperature of 50°C and a pressure of 50 Pa. The second insulating and waterproof layer 4 of the layer is bonded to the graphene film as a whole;

[0104] 4). Remove the metal matrix on the graphene film by mechanical peeling or electrochemical corrosion to prepare a graphene film with PVC film, PE film or PET film; the temperature of the electrochemical corrosion reaction is 30℃, and the corrosion The time is 10h, and the etching solution is an acidic solution of Cu. The corrosion reaction time is related to the thickness of the metal substrate and the electrochemical corrosion reaction temperature, and the metal substrate is completely corroded.

[0105] 5) Paste conductive electrodes of copper foil or silver paste with a width of 1-2 cm on both ends of the prepared graphene film;

[0106] 6) Spread a PVC film, PE film or PET film with a thickness of 0.2-0.6μm on the side of the electrode layer 2 that is not covered by the first insulating and waterproof layer 1, and place it on a steel plate with a thickness of 2cm. Use the press for 3-5 hours in an environment with a temperature of 80°C and a pressure of 300 MPa to complete the pasting of the insulating waterproof membrane on the other side of the graphene membrane;

[0107] 7) Connect the electrode layer 2 with the wire to prepare a graphene heating film whose surface temperature is arbitrarily adjustable in the range of 30-110°C.

Example Embodiment

[0108] Example 2

[0109] The difference between embodiment 2 and embodiment 1 is only in step 1), step 3) and step 4), and other steps are the same as in embodiment 1).

[0110] 1) Choose to prepare a layer of graphene film on the surface of the metal substrate (such as aluminum foil, copper foil or nickel foil) by chemical vapor deposition at a temperature of 25°C, normal pressure, and inert gas (such as helium, neon, etc.) , Grow in a sterile environment for 17 hours, prepare a layer of graphene film with a thickness of 38 μm;

[0111] 3). Cover the surface of the graphene-grown substrate with PVC film, PE film or PET film with an adhesive layer. Under an environment with a temperature of 90°C and a pressure of 50 Pa, it will be covered with adhesive for 3.2 hours. The second insulating and waterproof layer 4 of the junction layer is bonded to the graphene film as a whole;

[0112] 4). The metal matrix on the graphene film is removed by mechanical peeling or electrochemical corrosion to prepare a graphene film with PVC film, PE film or PET film. The temperature of the electrochemical corrosion reaction is 40°C. The time is 8.3h, and the etching solution is an acidic solution of Cu. The corrosion reaction time is related to the thickness of the metal substrate and the electrochemical corrosion reaction temperature, and the metal substrate is completely corroded.

PUM

Property	Measurement	Unit
Thickness	150.0 ~ 280.0	µm
Thickness	0.2 ~ 0.6	µm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Extended service life

Wind power and photovoltaic power complementary power supply system based on mixed energy accumulation of super capacitor accumulator

InactiveCN101309017AReduced installed capacityExtended service life

Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Graphene heating film and preparation method thereof

A technology of graphene heating film and graphene film, applied in the field of graphene heating film and its preparation, can solve the problems of long transfer time and low transfer rate, and achieve the effects of short transfer time, high transfer rate and simple preparation steps

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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