CN113784468A - Heating material and application thereof, conductive heating film and manufacturing method thereof - Google Patents
Heating material and application thereof, conductive heating film and manufacturing method thereof Download PDFInfo
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- CN113784468A CN113784468A CN202111064218.XA CN202111064218A CN113784468A CN 113784468 A CN113784468 A CN 113784468A CN 202111064218 A CN202111064218 A CN 202111064218A CN 113784468 A CN113784468 A CN 113784468A
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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- Surface Heating Bodies (AREA)
Abstract
The invention discloses a heating material and application thereof, a conductive heating film and a manufacturing method thereof, wherein the heating material is mainly prepared from the following substances in parts by mass: 0.8-1.2 parts of graphitized aqueous carbon nanotube slurry, 7-10 parts of aqueous acrylic resin or aqueous epoxy resin, 1-2 parts of deionized water and 0.001-0.01 part of macromolecular conductive dispersion liquid; the graphitized water-based carbon nanotube slurry is used, so that the heating and conducting performance of the graphitized water-based carbon nanotube slurry is more outstanding, the voltage required for converting electric energy into heat energy is lower, the highest required voltage is 36V, the highest current is 14A, the safety and the reliability are realized, the consumed electric energy is less, and the energy is saved; and can also be used directly in combination with a solar power supply; the graphitized aqueous carbon nanotube slurry is modified by the high-molecular conductive dispersion liquid, and specifically, the activity of carbon elements in the graphitized aqueous carbon nanotube slurry is activated, so that the resistance of the graphitized aqueous carbon nanotube slurry is increased.
Description
Technical Field
The invention belongs to the technical field of heating materials, and particularly relates to a heating material and application thereof, a conductive heating film and a manufacturing method thereof.
Background
The conductive heating film is a functional polymer material with wide application. In recent years, Graphene (Graphene) is a single layer of stoneThe graphene of the two-dimensional carbon nano-structure material formed by the ink sheet has excellent mechanical and thermal properties. Particularly, the mobility of the graphene can reach 2 × 104cm2the/Vxs is 100 times of that of silicon, the resistivity of the graphene Pm conductive and heating carbon film at room temperature can reach 108S/m, and the graphene Pm conductive and heating carbon film can resist 108A/cm2The current of (2) is 100 times of the copper tolerance capability. The conductivity can be improved by adding the P [ mu ] m conductive and heating carbon film into the conductive slurry, and due to the advantages of inertia, low density and the like of the graphene, the service life of the conductive slurry can be prolonged and the density of the slurry can be reduced by adding the graphene.
Disclosure of Invention
Aiming at the problem that the existing graphene material cannot meet the requirements of certain occasions, the invention provides a heating material.
The invention adopts the following technical scheme: a heating material is mainly prepared from the following substances in parts by mass: 0.8-1.2 parts of graphitized water-based carbon nanotube slurry, 7-10 parts of water-based acrylic resin or water-based epoxy resin, 1-2 parts of deionized water and 0.001-0.01 part of high-molecular conductive dispersion liquid.
Further limited, the polymer conductive dispersion is a polymer carbon tube aqueous conductive dispersion, the graphitized aqueous carbon nanotube slurry is obtained by graphitizing the aqueous carbon nanotube slurry, and the degree of graphitization is more than 90%.
The invention has the beneficial effects that: the graphitized water-based carbon nanotube is used, so that the heating performance of the graphitized water-based carbon nanotube is more outstanding, the voltage required for converting electric energy into heat energy is lower, the highest required voltage is 36V, the highest current is 14A, the safety and reliability are realized, the consumed electric energy is less, and the energy is saved; and can also be used directly in combination with a solar power supply; the graphitized aqueous carbon nanotube slurry is modified by the macromolecular water-based dispersion liquid, specifically, the activity of carbon elements in the graphitized aqueous carbon nanotube slurry is activated, so that the resistance of the graphitized aqueous carbon nanotube slurry is increased, and the heating performance is obviously improved; the heating material disclosed by the invention is simple in ingredient and environment-friendly.
The invention also provides a conductive heating film which comprises a heating material layer, wherein the upper surface and the lower surface of the heating material layer are both fixed with packaging layers, the upper surface or the lower surface of the heating material layer is provided with a positive electrode and a negative electrode, and the heating material layer is made of the heating material.
Further, the surface of the heat-generating material layer on which the positive electrode and the negative electrode are arranged is integrally formed with the packaging layer.
Further, the packaging layer is made of one of plastic films such as a PET substrate film, a PE substrate film, a TP mu substrate film, a non-woven fabric and a PI substrate film.
Further limiting, a release film/paper or a protective film is bonded on one of the packaging layers, and the release film/paper or the protective film is far away from the heating material layer.
Further limiting, the thickness of the packaging layer is 0.1mm, the thickness of the heating material layer is 40-80 μm, and the thickness of the release film/release paper is 0.05 mm.
The conductive heating film disclosed by the invention can be applied to the fields of industry and civilian use (automobiles, energy supply, building technology, aviation and aerospace technology, machinery and equipment manufacturing, military technology, environmental protection technology and the like), indoor basic heating (walls, floors, ceilings and the like), surface heating of automobiles (seats, linings and the like), extension products (foot pads, clothes, mattresses, waist protecting belts, eye shields, cushions and the like), heating (molds and the like) in machinery and equipment manufacturing, medical fields (hose heating, sweat steaming rooms, warm-hot therapeutic apparatuses, warmers and the like), special engineering heating (aerospace, military industry and the like), defrosting and the like; the temperature is raised quickly, and the radiation is far lower than the safety standard; the waterproof performance is strong, and the service life is long; large-area heating is uniform, and no hot spot exists; the coating can be quickly dried after coating; the temperature of the heating can be 20-450 ℃, and the temperature is controlled according to the requirement.
The invention also discloses a manufacturing method of the conductive heating film, which is characterized by comprising the following steps of:
preparing a substrate film, a PET release film or a protective film, a copper foil electrode or a conductive silver paste electrode, graphitized water-based carbon nanotube slurry, water-based acrylic resin or water-based epoxy resin, deionized water and a high-molecular conductive dispersion liquid;
cutting the substrate film according to the width requirement and performing surface corona treatment or pre-coating surface energy treatment;
dispersing and stirring the graphitized aqueous carbon nanotube slurry, the aqueous acrylic resin or the aqueous epoxy resin and deionized water for 8-10 minutes by a stirrer with 500 revolutions per minute of 300-plus-material, adding the high-molecular conductive dispersion liquid for dispersing and stirring, and activating carbon elements of the carbon nanotubes by the high-molecular conductive dispersion liquid to obtain a heating material;
fixing one of the release film/paper or the protective film and the substrate film, and attaching the electrode and the rest of the substrate film;
coating a heating material on the substrate film attached with the electrode and then drying;
and fixing the substrate film adhered with the release film or the protective film with the heating material.
The invention has the beneficial effects that: the manufacturing method is simple, time is saved, and the prepared conductive heating film has good performance.
The invention also provides a manufacturing method of the conductive heating film, the conductive heating film does not comprise a release film, and the method comprises the following steps:
preparing a substrate film, an electrode, graphitized aqueous carbon nanotube slurry, deionized water and a high-molecular conductive dispersion liquid;
cutting the substrate film according to the width requirement and performing surface corona treatment or pre-coating surface energy treatment;
dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin or the water-based epoxy resin and deionized water for 8-10 minutes by a stirrer at 500 revolutions per minute by 300-plus-one, and then adding the high-molecular conductive dispersion liquid for dispersing and stirring to obtain a heating material;
attaching the electrode to a part of the substrate film;
coating a heating material on the substrate film attached with the electrode and then drying;
the remaining base material film is fixed to the heat-generating material.
The invention has the beneficial effects that: the manufacturing method is simple, time is saved, and the prepared conductive heating film has good performance.
Drawings
Fig. 1 is a schematic structural view of a conductive heating film in embodiment 12;
fig. 2 is a schematic structural view of a conductive heating film in embodiment 13;
FIG. 3 is a graph showing the relationship between the surface resistance and the thickness of the heat-generating material prepared in example 2;
fig. 4 is a schematic view of the preparation of the conductive heat generating film in examples 12 and 13;
wherein: 1-an encapsulation layer; 2-a heat-generating material layer; 3-a positive electrode; 4-a negative electrode; 5-a release film.
Detailed Description
A heating material is mainly prepared from the following substances by mass: 100g to 2000g, preferably 500g, more preferably 1000g of graphitized aqueous carbon nanotube slurry; 1kg to 10kg, preferably 6kg, of aqueous acrylic or epoxy resin, 1-2kg, preferably 2kg, more preferably 1kg, of deionized water; 1-10g, preferably 3-8g, more preferably 5g of the polymer conductive dispersion liquid; the graphitized aqueous carbon nanotube slurry can be prepared from example 1 in the grant publication number CN109460696B or example 1 in the grant publication number CN 103400991B; the polymer conductive dispersion liquid is polymer carbon tube aqueous conductive dispersion liquid; the polymer conductive dispersion liquid activates carbon elements in the graphitized aqueous carbon nanotube slurry, so that the resistance of the graphitized aqueous carbon nanotube slurry is increased, the heating power is increased, the high-heat-conductivity performance is realized, and hot spots are avoided; the voltage required for heating is low, safe and reliable, and can be applied in any field requiring heat, such as medical treatment, military industry and building, and finally, in the field of battery shielding.
A conductive heating film comprises a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, and the heating material layer is made of the heating material; the packaging layer can be made of glass fiber board, leatheroid, wood, PVC substrate film, organic acrylic board, TP film, PC substrate film and PET substrate film, preferably PET substrate film; both the positive electrode and the negative electrode can be made of copper foil or silver paste;
the surface of the heating material layer provided with the positive electrode and the negative electrode is integrally formed with the packaging layer;
one of the packaging layers is bonded with a release film through an adhesive, the release film is far away from the heating material layer, the width of the layer formed by the adhesive is 35mm, and the thickness of the layer formed by the adhesive is 0.035 mm; the thickness of the packaging layer is 0.1mm, the thickness of the heating material layer is 40-80 μm, preferably 70 μm, and the thickness of the release film is 0.025-0.188mm, preferably 0.05 mm;
the number of layers of the heating film can be made into the required number of layers according to market demands, and a layer of water-based epoxy resin glue or water-based epoxy resin is coated on the back surface of the release film or the back surface of the heating material layer for waterproof treatment, so that the heating film can be quickly adhered to different fields for use and waterproof application.
A manufacturing method of a conductive heating film, which comprises a release film, comprises the following steps:
preparing a substrate film, a release film, an electrode, graphitized aqueous carbon nanotube slurry, aqueous acrylic resin or aqueous epoxy resin, deionized water and a high-molecular conductive dispersion liquid, wherein the width of the substrate film is 900mm, the thickness of the substrate film is 0.1mm, and the preferred color is black;
cutting the base material film according to the width requirement and carrying out surface corona treatment, wherein the voltage in the corona treatment process is 1 kv;
dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin or the water-based epoxy resin and deionized water for 8-10 minutes by a stirrer at 500 revolutions per minute by 300-one, and then adding the high-molecular conductive dispersion liquid for stirring and dispersing to obtain a heating material;
fixing the release film and the PET substrate film, and then attaching the electrode and the rest of the PET substrate film; after the electrodes are attached, the PET substrate film and the surfaces of the electrodes need to be cleaned synchronously, so that no dust and oil stains are ensured;
coating a heating material on the PET substrate film attached with the electrode, and drying, wherein the drying temperature is correspondingly adjusted according to the actual coating thickness;
and (3) bonding the PET substrate film attached with the release film with a heating material, wherein the bonding is realized by adopting a water-based epoxy resin adhesive.
A manufacturing method of a conductive heating film, which does not include a release film, comprises the following steps:
preparing a substrate film, an electrode, graphitized water-based carbon nanotube slurry, deionized water and a high-molecular conductive dispersion liquid, wherein the width of the substrate film is 900mm, the thickness of the substrate film is 0.1mm, and the preferred color is black;
cutting the base material film according to the width requirement and carrying out surface corona treatment, wherein the voltage in the corona treatment process is 1 kv;
dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin or the water-based epoxy resin and deionized water for 8-10 minutes by a stirrer at 500 revolutions per minute by 300-one, and then adding the high-molecular conductive dispersion liquid for dispersing and stirring to obtain a heating material;
coating a heating material on the PET substrate film attached with the electrode, and drying, wherein the drying temperature is correspondingly adjusted according to the actual coating thickness;
the base film to which the electrode is not attached is bonded to the heat generating material.
Example 1
The preparation of the exothermic material comprises the following steps:
s1: weighing the aqueous carbon nanotube slurry prepared in the embodiment 1 of the authorization publication No. CN109460696B, graphitizing the aqueous carbon nanotube slurry to obtain graphitized aqueous carbon nanotube slurry, wherein the graphitization degree is more than 90%, and the graphitization method is the existing method and is not repeated in the embodiment;
0.8kg of graphitized water-based carbon nanotube slurry, 7kg of water-based acrylic resin, 1kg of deionized water and 1g of water-based conductive carbon black slurry;
s2: and dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin and the deionized water for 8 minutes by a 300-rpm stirrer, and then adding the water-based conductive carbon black slurry, stirring and dispersing to obtain the heating material.
Example 2
The preparation of the exothermic material comprises the following steps:
s1: weighing the aqueous carbon nanotube slurry prepared in embodiment 1 of the authorization publication No. CN109460696B, graphitizing the aqueous carbon nanotube slurry to obtain graphitized aqueous carbon nanotube slurry, wherein the graphitization degree is more than 90%, the graphitization method is the existing method, and the description is not repeated in the embodiment;
1kg of graphitized water-based carbon nanotube slurry, 7kg of water-based epoxy resin, 1kg of deionized water and 5g of water-based conductive carbon black slurry;
s2: and dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin and the deionized water for 10 minutes by a stirrer at the speed of 400 revolutions per minute, and then adding the water-based conductive carbon black slurry for dispersing and stirring to obtain the heating material.
Example 3
The preparation of the exothermic material comprises the following steps:
s1: weighing the aqueous carbon nanotube slurry prepared in embodiment 1 of the authorization publication No. CN103400991B, graphitizing the aqueous carbon nanotube slurry to obtain graphitized aqueous carbon nanotube slurry, wherein the graphitization degree is more than 90%, the graphitization method is the existing method, and the description is not repeated in the embodiment;
1.2kg of graphitized water-based carbon nanotube slurry, 10kg of water-based acrylic resin, 2kg of deionized water and 10g of water-based conductive carbon black slurry;
s2: and dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin and the deionized water for 9 minutes by a 500-rpm stirrer, and then adding the water-based conductive carbon black slurry for dispersing and stirring to obtain the heating material.
Example 4
A conductive heating film comprises a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, and the heating material layer is made of the heating material prepared in the embodiment 2; the packaging layer is made of a PET substrate film; both the positive and negative electrodes may be made of copper foil.
Example 5
A conductive heating film comprises a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, and the heating material layer is made of the heating material prepared in the embodiment 1; the packaging layer is made of a PC substrate film; both the positive and negative electrodes can be made of silver paste.
Example 6
A conductive heating film comprises a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, and the heating material layer is made of the heating material prepared in the embodiment 1; the packaging layer is made of a PVC base material film; both the positive and negative electrodes can be made of silver paste.
Example 7
A conductive heating film comprises a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, and the heating material layer is made of the heating material prepared in the embodiment 3; the packaging layer is made of a PVC base material film; both the positive and negative electrodes can be made of silver paste.
Example 8
As shown in fig. 1, a conductive heating film comprises a heating material layer 2, wherein a packaging layer 1 is fixed on both the upper surface and the lower surface of the heating material layer 2, a positive electrode 3 and a negative electrode 4 are arranged on the upper surface or the lower surface of the heating material layer 2, the surface of the heating material layer 2, on which the positive electrode 3 and the negative electrode 4 are arranged, is integrally formed with the packaging layer 1, and the heating material layer 2 is made of the heating material prepared in example 5; the packaging layer 1 is made of a PVC base material film; both the positive electrode 3 and the negative electrode 4 may be made of silver paste.
Example 9
As shown in FIG. 2, a conductive heating film comprises a heating material layer 2, wherein both the upper and lower surfaces of the heating material layer 2 are fixed with packaging layers 1, the upper surface or the lower surface of the heating material layer 2 is provided with a positive electrode 3 and a negative electrode 4, the surface of the heating material layer 2 provided with the positive electrode 3 and the negative electrode 4 is integrally formed with the packaging layer 1, the other packaging layer 1 is bonded with the heating material layer 2 and a release film 5 by an adhesive,
the heat-generating material layer 2 was made of the heat-generating material prepared in example 2; the packaging layer 1 is made of a PET substrate film; both the positive electrode 3 and the negative electrode 4 may be made of copper foil;
the width of the layer formed by the adhesive is 35mm, and the thickness is 0.035 mm; the thickness of the packaging layer 1 is 0.1mm, the thickness of the heating material layer 2 is 70 μm, and the thickness of the release film 5 is 0.05 mm.
Example 10
A conductive heating film comprises a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, the surface of the heating material layer, which is provided with the positive electrode and the negative electrode, is integrally formed with the packaging layers, and the other packaging layer is bonded with the heating material layer and a release film through a bonding agent;
the heat-generating material layer was made of the heat-generating material prepared in example 2; the packaging layer is made of a PET substrate film; both the positive electrode and the negative electrode can be made of copper foil;
the width of the layer formed by the adhesive is 35mm, and the thickness is 0.035 mm; the thickness of the packaging layer is 0.1mm, the thickness of the heating material layer is 55 microns, and the thickness of the release film is 0.05 mm.
Example 11
The preparation of the conductive heating film of embodiment 10 specifically includes the following steps:
s1: preparing a PET (polyethylene terephthalate) substrate film, water-based epoxy resin, a release film/paper, a protective film, an electrode, graphitized water-based carbon nanotube slurry, deionized water and a high-molecular conductive dispersion liquid, wherein the width of the PET substrate film is 900mm, the thickness of the PET substrate film is 0.1mm, and black is selected;
s2: cutting the PET substrate film according to the width requirement and carrying out surface corona treatment, wherein the voltage in the corona treatment process is 1 kv;
s3: dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based epoxy resin and deionized water for 8-10 minutes by a 300-rpm stirrer, and then adding the high-molecular conductive dispersion liquid for dispersing and stirring to obtain a heating material;
s4: coating a heating material on the PET substrate film attached to the electrode, and drying at the drying temperature of 150-200 ℃;
s5: the release film is attached to another PET substrate film and is attached by an adhesive;
s6: and the PET substrate film adhered with the release film is adhered with the heating material.
Example 13
The preparation of the conductive heating film of embodiment 8 specifically includes the following steps:
s1: preparing a PET substrate membrane electrode, graphitized water-based carbon nanotube slurry, water-based acrylic resin, deionized water and a high-molecular conductive dispersion liquid, wherein the width of the PET substrate membrane is 900mm, the thickness of the PET substrate membrane is 0.1mm, and black is selected;
s2: cutting the PET substrate film according to the width requirement and carrying out surface corona treatment, wherein the voltage in the corona treatment process is 1 kv;
s3: dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin and the deionized water for 8-10 minutes by a 500-rpm stirrer, and then adding the high-molecular conductive dispersion liquid for dispersing and stirring to obtain a heating material;
s4: coating a heating material on the PET substrate film attached to the electrode, and drying at the drying temperature of 150-200 ℃;
s5: and bonding the other PET base material film with the heating material.
The heat-generating material prepared in example 2 was subjected to performance tests, and the results are shown in table 1 and fig. 3.
TABLE 1
As can be seen from table 1 and fig. 3, as the coating thickness increases, the resistance becomes smaller, and therefore, the heat generation amount can be controlled by controlling the coating thickness, and other properties are excellent.
In addition, as shown in fig. 4, the process apparatuses used in examples 12 and 13 were completed by applying a heat-generating material to a PET base film in screen printing and then baking it in an oven.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The heating material is characterized by being mainly prepared from the following substances in parts by mass: 0.8-1.2 parts of graphitized water-based carbon nanotube slurry, 7-10 parts of water-based acrylic resin or water-based epoxy resin, 1-2 parts of deionized water and 0.001-0.01 part of high-molecular conductive dispersion liquid.
2. A heat-generating material as described in claim 1, wherein the polymer conductive dispersion is a carbon nanotube aqueous conductive dispersion; the graphitized water-based carbon nanotube slurry is obtained by graphitizing the water-based carbon nanotube slurry, and the graphitizing degree is more than 90%.
3. Use of the heat-generating material according to claim 1 or 2 in the fields of electromagnetic shielding, medical treatment, indoor heating, aerospace, military industry, foot mats, clothes, bed mats, seat belts, eye patches, walls, automobiles, construction, and environmental protection.
4. A conductive heating film is characterized by comprising a heating material layer, wherein packaging layers are fixed on the upper surface and the lower surface of the heating material layer, a positive electrode and a negative electrode are arranged on the upper surface or the lower surface of the heating material layer, and the heating material layer is made of the heating material as claimed in claim 1 or 2.
5. The conductive heat generation film according to claim 4, wherein a face of the heat generation material layer on which the positive electrode and the negative electrode are provided is integrally formed with the encapsulation layer.
6. The conductive heating film according to claim 5, wherein the encapsulation layer is made of one of a PET substrate film, a PE substrate film, a release paper, a TP m thin film, a non-woven fabric, and a PI substrate film.
7. The conductive heating film according to claim 5, wherein a release film or a protective film is bonded to one of the encapsulation layers, and the release film or the protective film is away from the heating material layer.
8. The conductive heating film according to claim 5, wherein the thickness of the encapsulation layer is 0.1mm, the thickness of the heating material layer is 40-80 μm, and the thickness of the release film is 0.05 mm.
9. A method of manufacturing a conductive heating film according to claim 7, comprising the steps of:
preparing a substrate film, a release film or a protective film, an electrode, graphitized aqueous carbon nanotube slurry, aqueous acrylic resin or aqueous epoxy resin, deionized water and a high-molecular conductive dispersion liquid;
cutting the substrate film according to the width requirement and performing surface corona treatment or pre-coating surface energy treatment;
dispersing and stirring the graphitized aqueous carbon nanotube slurry, the aqueous acrylic resin or the aqueous epoxy resin and deionized water for 8-10 minutes by a stirrer with the speed of 300-500 r/min, adding the high-molecular conductive dispersion liquid for dispersing and stirring, and dispersing and activating carbon elements of the carbon nanotubes by the high-molecular conductive dispersion liquid to obtain a heating material;
fixing one of the release film or the protective film and the substrate film, and then attaching the electrode and the rest of the substrate film;
coating a heating material on the substrate film attached with the electrode and then drying;
and fixing the substrate film adhered with the release film or the protective film with the heating material.
10. A method of manufacturing a conductive heating film according to claim 5, comprising the steps of:
preparing a base material film, a copper foil electrode or a conductive silver paste electrode, graphitized water-based carbon nanotube slurry, water-based acrylic resin or water-based epoxy resin, deionized water and a high-molecular conductive dispersion liquid;
cutting the substrate film according to the width requirement and performing surface corona treatment or pre-coating surface energy treatment;
dispersing and stirring the graphitized water-based carbon nanotube slurry, the water-based acrylic resin or the water-based epoxy resin and deionized water for 8-10 minutes by a stirrer at 500 revolutions per minute by 300-plus-one, and then adding the high-molecular conductive dispersion liquid for dispersing and stirring to obtain a heating material;
attaching the electrode to a part of the substrate film;
coating a heating material on the substrate film attached with the electrode and then drying;
the remaining base material film is fixed to the heat-generating material.
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