CN109640411A - A kind of graphene constant temperature electric heating film and preparation method thereof - Google Patents
A kind of graphene constant temperature electric heating film and preparation method thereof Download PDFInfo
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- CN109640411A CN109640411A CN201910083655.2A CN201910083655A CN109640411A CN 109640411 A CN109640411 A CN 109640411A CN 201910083655 A CN201910083655 A CN 201910083655A CN 109640411 A CN109640411 A CN 109640411A
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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
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater 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—Heater 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
- H05B3/145—Carbon only, e.g. carbon black, graphite
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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
Abstract
The present invention provides a kind of graphene constant temperature electric heating film and preparation method thereof, at room temperature, graphene, alkanes substance, resin, organic solvent and auxiliary agent are sufficiently stirred, mixed slurry is made, slurry is applied to membrane surface, conductive electrode is set at film both ends after drying, covering insulating film obtains graphene constant temperature electric heating film after removing basement membrane.Graphene constant temperature electric heating film prepared by the present invention is due to joined the grapheme material with special construction, thus its electrical and thermal conductivity performance is better than the prior art, and the self-constant temperature (room temperature PTC thermal control effect) in low temperature range can be realized under the premise of not introducing other temperature control devices.It is had broad application prospects based on the present invention excellent electric heating property and far infrared radiation effect, the present invention in warm, health care product scope.
Description
Technical field
The present invention relates to thermo electric material technical fields, and in particular to a kind of graphene constant temperature electric heating film and preparation method thereof.
Background technique
Heating System of Electric radiant Heating Film is different from using radiator, air-conditioning, radiator as the point heating system of representative and with hair
The wire type heating system that thermoelectricity warms up as representative, the low-carbon heating high-tech that formula heating field is researched and developed using modern aerospace flight technology in face
Product.Electric radiant Heating Film is the translucent polyester film that can be generated heat after a kind of energization, using face formula heating system, most heats with
The form of radiation comes out, and not only fever is uniform, but also resultant effect is generally preferred over traditional convection current heating system, thus close
Favor over year by user.
The conductive component that existing Electric radiant Heating Film is used by it is different, and electric heating property also can difference.Such as with wire or
, as heater, usually there is non-uniform defect of generating heat, and local damage at the circuit of certain shapes in person's carbon fibre winding
It can not then continue to use afterwards, can also there is security risk.It and is to lead with materials such as conventional graphite alkene, carbon nanotube, conductive blacks
Electric filler is made be coated with after electrically conductive ink made of Electric radiant Heating Film, although these nano-carbon materials theoretically have good conduction
Property, but in actual application, unstable due to its nanostructure causes its various physicochemical property undesirable.
In addition, existing electric heating film is once being made, resistance (power) immobilizes, it usually needs manual operation is controlled
Connecting and disconnecting of the circuit processed, it is more troublesome, at present there are also product is improved, realize that intelligence is adjusted by devices such as setting temperature sensors
Section, but structure is relatively complicated.
Therefore, thermal control, the lower room temperature ptc material of resistivity can be carried out in room temperature by being badly in need of one kind.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of graphene constant temperature electric heating film and preparation method thereof, preparation
Material safety and electric conductivity are ideal, and can automatically adjust temperature and power.
To solve the above problems, the invention provides the following technical scheme:
On the one hand, the present invention provides a kind of graphene constant temperature electric heating film, including conductive composite film,
The conductive composite film, according to the mass fraction comprising following component: 0.5 ~ 2 part of graphene, alkanes substance: 15 ~ 40
Part, resin: 5 ~ 20 parts, 0.5 ~ 5 part of auxiliary agent, remaining is organic solvent.
Preferably, the weight percentage of each component of the conductive composite film is respectively as follows: 0.5 ~ 2 wt% of graphene, alkane
15 ~ 40 wt% of hydrocarbons, 5 ~ 20 wt% of resin, 0.5 ~ 5 wt% of auxiliary agent, organic solvent are surplus, the weight percent of each component
The sum of content is 100 wt%.
Further, the graphene is the multilevel structure graphene of CVD method preparation, with special microscopic appearance, tool
Body structure is to combine the continuous integral type knot formed by two-dimensional graphene lamella and perpendicular to the one-dimensional carbon nanotube on its surface
Structure.The special structure of graphene has more excellent electric conductivity, is more advantageous to form conductive network.
Further, the graphene is graphite alkenes nano material, it is specific the preparation method is as follows:
I) copper sheet is immersed in the mixed liquor of sodium hydroxide solution and ammonium hydroxide (25%), deionized water and nothing is used after stewing process
Water-ethanol washs respectively, dries obtain Cu/Cu (OH) in air2Nanometer stick array；It is calcined under argon atmosphere and is
Obtain Cu/CuO nanometer stick array；
II) by sodium hydroxide and glucose mixed dissolution Yu Shuizhong, step I is added thereto) gained Cu/CuO nanometer rods battle array
Column are reacted in microwave hydrothermal, take out solid deionized water after being cooled to room temperature and dehydrated alcohol washs respectively, obtain dry
Cu piece loaded Cu nanometer stick array；
III) resulting materials in step II) are put into CVD tube furnace, under hydrogen and argon gas mixed atmosphere, tube furnace is with 5
DEG C/heating of the rate of min after, then adjust hydrogen flow rate, be passed through methane gas, after heat preservation, turn off hydrogen and methane gas,
Room temperature is down in argon atmosphere, taking out sample is the multilevel structure graphene for obtaining being grown in copper substrate surfaces.
Further, the graphene must be subsequently placed in ferric chloride solution, through one layer of resin of surface spin coating to copper-based
Bottom is come into operation again after corroding completely, can guarantee the structural integrity of its graphene in subsequent use process after this treatment.?
In corrosion process, copper can be entered in solution by ferrous ions oxidation for copper ion, i.e., separate with graphene, and graphene surface revolves
The resin of painting can be filled between the nano-tube array of multilevel structure graphene, make its in subsequent use process there is no
Structural collapse ensure that graphene from the structural integrity after copper substrate surfaces removal.Resin thickness is without particular/special requirement, only for making
Graphene after corrosion substrate can float on the water surface and facilitate taking-up, preferably 0.5 ~ 1mm.
Further, the graphene the preparation method is as follows:
I) clean copper sheet is immersed in the mixed liquor of 200mL sodium hydroxide solution (10mol/L) and 100mL ammonium hydroxide (25%)
In, 12h is stood, is then washed respectively for several times with deionized water and dehydrated alcohol, is dried obtain Cu/Cu (OH) in air2
Nanometer stick array, then by it, 550 DEG C of calcining 2h obtain Cu/CuO nanometer stick array under argon atmosphere；
II) by 8g sodium hydroxide and 8g glucose mixed dissolution in 80mL water, step I is added thereto) gained composite wood
Material, microwave hydrothermal reacts 1h under the conditions of 160 DEG C, takes out solid deionized water and dehydrated alcohol difference after being cooled to room temperature
Washing for several times, Cu piece loaded Cu nanometer stick array is dried to obtain at 60 DEG C；
III) resulting materials in step II) are put into CVD tube furnace, in hydrogen (flow velocity 20sccm) and argon gas, (flow velocity is
800sccm) under mixed atmosphere, after tube furnace is warming up to 1000 DEG C with the rate of 5 DEG C/min, then adjusting hydrogen flow rate is
100sccm, and methane gas is passed through with the flow velocity of 30sccm, after keeping the temperature 15min, turn off hydrogen and methane gas, in argon atmospher
Room temperature is down in enclosing, taking out sample is the multilevel structure graphene for obtaining being grown in copper substrate surfaces；
IV) the multilevel structure graphene must be subsequently placed in 0.5mol/L ferric chloride solution through one layer of resin of surface spin coating, to
Copper-based bottom is come into operation again after corroding completely, can guarantee its structural integrity in subsequent use process after this treatment.
Further, the organic solvent be polar organic solvent, as ethyl alcohol, acetone, acetonitrile, methylene chloride, triethylamine,
Dimethylformamide (DMF), carbon tetrachloride etc., preferably DMF.
Further, the alkanes substance is carbon atom number in the linear paraffin or branched paraffin between 14 ~ 24
It is a kind of.The addition of alkane can assign material PTC effect, and the Curie temperature that the alkanes substance of selection adjusts material is 5 ~ 50 DEG C,
General Curie temperature temperature is related with matrix fusing point, different alkanes substances its with different fusing points, also just have different
Curie temperature.Preferably, it is 14,15,16,17,18,19,20,21,22,23,24 that the alkanes substance, which is carbon atom number,
Linear paraffin or one of branched paraffin；Preferably n-eicosane hydrocarbon, n-tetradecane, n-tetracosane.
Further, the resin is one of polyurethane resin, acrylic resin or epoxy resin.It is described conductive multiple
The resin closed in film is consistent with resin used in graphene surface spin coating.
Further, the auxiliary agent includes dispersing agent, defoaming agent and levelling agent, and the dosage of three kinds of auxiliary agents is equal.
Further, the dispersing agent is the HT-5027 of Nantong City Han Tai Chemical Co., Ltd., and the addition of dispersing agent can make
Each component is evenly dispersed；The levelling agent is the SN-612 of Nippon Nopco Assistant Co., Ltd., and the addition of levelling agent makes film
Surface is more smooth；The defoaming agent is T-7511 of the Guangzhou ten thousand at Environmental Protection Technology Co., Ltd, and defoaming agent can remove stirring
The bubble generated in the process.
On the other hand, the present invention provides a kind of preparation method of above-mentioned graphene constant temperature electric heating film, the specific steps are as follows:
1) graphene, alkanes substance, resin, organic solvent and auxiliary agent are sufficiently stirred and mixed slurry is made, slurry is applied
Cloth obtains conductive composite film after dry to membrane surface；
2) conductive electrode is set in conductive composite film two sides, then removes basement membrane；
3) insulating film is covered on conductive composite film two sides to get graphene constant temperature electric heating film is arrived.
Further, the basement membrane is one of PP film, PE film, PVC film or PTFE film, is played a supportive role.
Further, the coating thickness of the slurry is 80 ~ 160 μm, and it is compound that 20 ~ 40 μm of conduction can be formed after dry
Film.
Further, the conductive electrode is printing conductive silver paste or copper slurry or pressing conductive copper adhesive tape or conductive fabric.
Further, the insulating film is polyurethane film, plays insulation, waterproof and protective effect.
On the other hand, the present invention provides a kind of graphene, and with special microscopic appearance, specific structure is by two-dimentional graphite
Alkene lamella and the continuous integral structure that is formed is combined perpendicular to the one-dimensional carbon nanotube on its surface.The special structure of graphene
With more excellent electric conductivity, it is more advantageous to form conductive network.
Further, the graphene is the multilevel structure graphene prepared with CVD method.
Further, the graphene is graphite alkenes nano material, it is specific the preparation method is as follows:
I) copper sheet is immersed in the mixed liquor of sodium hydroxide solution and ammonium hydroxide (25%), deionized water and nothing is used after stewing process
Water-ethanol washs respectively, dries obtain Cu/Cu (OH) in air2Nanometer stick array；It is calcined under argon atmosphere and is
Obtain Cu/CuO nanometer stick array；
II) by sodium hydroxide and glucose mixed dissolution Yu Shuizhong, step I is added thereto) gained Cu/CuO nanometer rods battle array
Column are reacted in microwave hydrothermal, take out solid deionized water after being cooled to room temperature and dehydrated alcohol washs respectively, obtain dry
Cu piece loaded Cu nanometer stick array；
III) resulting materials in step II) are put into CVD tube furnace, under hydrogen and argon gas mixed atmosphere, tube furnace is with 5
DEG C/heating of the rate of min after, then adjust hydrogen flow rate, be passed through methane gas, after heat preservation, turn off hydrogen and methane gas,
Room temperature is down in argon atmosphere, taking out sample is the multilevel structure graphene for obtaining being grown in copper substrate surfaces.
Beneficial effect
The present invention provides a kind of graphene constant temperature electric heating film and preparation method thereof, at room temperature, by graphene, alkanes object
Matter, resin, organic solvent and auxiliary agent, which are sufficiently stirred, is made mixed slurry, slurry is applied to membrane surface, in film after drying
Conductive electrode is arranged in both ends, and covering insulating film obtains graphene constant temperature electric heating film after removing basement membrane.
Graphene constant temperature electric heating film prepared by the present invention has room temperature PTC effect, occupies when fever film temperature is increased to material
In temperature when, resistance can increased dramatically, and reduce power, and then temperature can reduce, when be lower than Curie temperature when, heating film is again
It will continue to heat, self-constant temperature can be so realized in lower temperature range, without the devices such as additional setting temperature sensor, structure
Simple and energy-saving safe.
Graphene has higher electric conductivity, smaller specific gravity and better flexibility compared to other carbon materials, so that this hair
The low-temperature resistivity of the material entirety of bright preparation is lower, and raw material dosage is less, and flexibility is more preferable.Multilevel structure graphene is selected,
The electrical and thermal conductivity performance that its special three-dimensional conductive network structure makes heating film have superelevation, better than in the prior art with conductive charcoal
Black, conductive carbon fibre, carbon nanotube or conventional two-dimensional graphene are the Electric radiant Heating Film of conductive filler, and graphene dosage is few, section
Cost-saving.
The resin of selection makes graphene constant temperature electric heating film obtained have excellent resistance stability, has high temperature resistant, nothing
The feature that poison is harmless, intensity is high.
Alkanes substance can drive the variation of graphene conductive network in Thermal Cycling, to change coat inside
Resistance, obtain positive temperature and resistance effect, realize the regulation to resistivity.
Graphene surface is modified using alkanes substance and resin, so that the segmental defect of graphene surface obtains
It eliminates, reduces surface energy, effectively increase the mechanical strength of material, improve the mechanical property and dispersion performance of graphene,
The ester group of resin and the group association reaction of graphene surface, while one layer of alkanes substance is coated on the surface of graphene,
Enhance the associativity of graphene and polymeric matrix, to form the conductive network of mutually " bridge joint ", realizes the low-resistance of PTC.
By the effect of auxiliary agent, solve the problems, such as the dispersion of graphene and defoaming.Alkanes substance of the invention, resin and
Content and proportion adjustment resistivity between graphene, to meet the different market demands.
The present invention is due to joined the grapheme material with special construction, thus its electrical and thermal conductivity performance is better than existing skill
Art can realize the self-constant temperature (room temperature PTC thermal control effect) in low temperature range under the premise of not introducing other temperature control devices.It is based on
The present invention excellent electric heating property and far infrared radiation effect, before the present invention has wide application in warm, health care product scope
Scape.
Detailed description of the invention
The microscopic cross schematic diagram of Fig. 1 multilevel structure graphene.
The temperature variation curve of Fig. 2 graphene constant temperature electric heating film.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, With reference to embodiment to this
Invention is further described.
Embodiment 1
I) clean copper sheet is immersed in the mixed liquor of 200mL sodium hydroxide solution (10mol/L) and 100mL ammonium hydroxide (25%),
12h is stood, is then washed respectively for several times with deionized water and dehydrated alcohol, is dried obtain Cu/Cu (OH) in air2Nanometer
Stick array, then by it, 550 DEG C of calcining 2h obtain Cu/CuO nanometer stick array under argon atmosphere；
II) by 8g sodium hydroxide and 8g glucose mixed dissolution in 80mL water, step I is added thereto) gained composite material,
Microwave hydrothermal reacts 1h under the conditions of 160 DEG C, takes out solid deionized water after being cooled to room temperature and dehydrated alcohol is washed respectively
It washs for several times, Cu piece loaded Cu nanometer stick array is dried to obtain at 60 DEG C；
III) resulting materials in step II) are put into CVD tube furnace, in hydrogen (flow velocity 20sccm) and argon gas, (flow velocity is
800sccm) under mixed atmosphere, after tube furnace is warming up to 1000 DEG C with the rate of 5 DEG C/min, then adjusting hydrogen flow rate is
100sccm, and methane gas is passed through with the flow velocity of 30sccm, after keeping the temperature 15min, turn off hydrogen and methane gas, in argon atmospher
Room temperature is down in enclosing, taking out sample is the multilevel structure graphene for obtaining being grown in copper substrate surfaces；
IV) the multilevel structure graphene must be subsequently placed in 0.5mol/L ferric chloride solution through one layer of resin of surface spin coating, to
Copper-based bottom is come into operation again after corroding completely, can guarantee its structural integrity in subsequent use process after this treatment.
Embodiment 2
Accurately weigh 1g embodiment 1 preparation graphene, 30g n-eicosane, 10g polyurethane resin, 56gDMF, 1gHT-5027,
1g SN-612,1g T-7511 are mixed and stir 2h energetically, dissolve solid sufficiently or disperse to get mixed slurry is arrived,
Slurry is applied to by PVC film surface using coating process, coating layer thickness is set as 120 μm, dry under the conditions of 120 DEG C
The conductive composite film that thickness is about 30 μm is obtained, is bonded two conductive copper adhesive tapes in parallel as electrode, then at it at film both ends
Surface is bonded one layer of polyurethane film, removes the PVC film of another side, and the face be equally bonded one layer of polyurethane film to get
To self-constant temperature graphene Electric radiant Heating Film.
Embodiment 3
Accurately weigh 0.5g embodiment 1 preparation graphene, 40g n-tetracosane, 5g epoxy resin, 51.5g triethylamine,
1gHT-5027,1g SN-612,1g T-7511 are mixed and stir 2h energetically, make solid sufficiently dissolve or disperse to get
To mixed slurry, slurry is applied to by PTFE film surface using coating process, coating layer thickness is set as 160 μm, in 130 DEG C of conditions
The conductive composite film that thickness is about 40 μm can be obtained in lower drying, is bonded two conductive copper adhesive tapes in parallel as electricity at film both ends
Then pole is bonded one layer of polyurethane film on its surface, removes the PVC film of another side, and be equally bonded a strata ammonia in the face
Ester film to get arrive self-constant temperature graphene Electric radiant Heating Film.
Embodiment 4
Accurately weigh graphene, the 20g n-octadecane, 20g acrylic resin, 55g acetone, 1g HT- of the preparation of 2g embodiment 1
5027,1g SN-612,1g T-7511 are mixed and stir 2h energetically, and solid is made sufficiently to dissolve or disperse to get mixing is arrived
Slurry is applied to PE film surface using coating process by slurry, and coating layer thickness is set as 80 μm, dry under the conditions of 120 DEG C, i.e.,
The conductive composite film that thickness is about 20 μm can be obtained, print two conductive silver paste bands in parallel as electrode at film both ends, then exist
Its surface is bonded one layer of polyurethane film, removes the PVC film of another side, and be equally bonded one layer of polyurethane film in the face, i.e.,
Obtain self-constant temperature graphene Electric radiant Heating Film.
Embodiment 5
Performance test:
Conducting wire, electricity inside wire end and Electric radiant Heating Film are connected to graphene constant temperature electric heating film both ends prepared in embodiment 2 ~ 4
Pole connection, the conducting wire other end connect to power supply.Under 220V voltage, the temperature for testing Electric radiant Heating Film changes with time relationship, institute
Result is obtained as shown in Fig. 2, as seen from the figure, graphene constant temperature electric heating film prepared by the present invention heats up rapidly, and temperature arrives
Tend to be constant after up to certain value, the equilibrium temperature of three embodiments is respectively 34 DEG C, 48 DEG C and 27 DEG C, is shown of the invention certain
There is good self-constant temperature effect.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
Mind and essence in the case where, various changes and modifications can be made therein, these variations and modifications be also considered as be comprised in it is of the invention
In protection scope.
Claims (10)
1. a kind of graphene constant temperature electric heating film, which is characterized in that including conductive composite film,
The conductive composite film, according to the mass fraction comprising following component: 0.5 ~ 2 part of graphene, alkanes substance: 15 ~ 40
Part, resin: 5 ~ 20 parts, 0.5 ~ 5 part of auxiliary agent, remaining is organic solvent.
2. graphene constant temperature electric heating film according to claim 1, which is characterized in that the graphene is CVD method preparation
Multilevel structure graphene.
3. graphene constant temperature electric heating film according to claim 1, which is characterized in that the graphene specific structure is by two
It ties up graphene sheet layer and combines the continuous integral structure formed perpendicular to the one-dimensional carbon nanotube on its surface.
4. graphene constant temperature electric heating film according to claim 1, which is characterized in that the graphene is graphite alkenes nanometer
Material, it is specific the preparation method is as follows:
Copper sheet is immersed in the mixed liquor of sodium hydroxide solution and ammonium hydroxide (25%), with deionized water and anhydrous after stewing process
Ethyl alcohol washs respectively, dries obtain Cu/Cu (OH) in air2Nanometer stick array；It is calcined under argon atmosphere to obtain the final product
To Cu/CuO nanometer stick array；
II) by sodium hydroxide and glucose mixed dissolution Yu Shuizhong, step I is added thereto) gained Cu/CuO nanometer rods battle array
Column are reacted in microwave hydrothermal, take out solid deionized water after being cooled to room temperature and dehydrated alcohol washs respectively, obtain dry
Cu piece loaded Cu nanometer stick array；
III) resulting materials in step II) are put into CVD tube furnace, under hydrogen and argon gas mixed atmosphere, tube furnace is with 5
DEG C/heating of the rate of min after, then adjust hydrogen flow rate, be passed through methane gas, after heat preservation, turn off hydrogen and methane gas,
Room temperature is down in argon atmosphere, taking out sample is the multilevel structure graphene for obtaining being grown in copper substrate surfaces.
5. graphene constant temperature electric heating film according to claim 4, which is characterized in that the graphene must be through surface spin coating one
Layer resin, is subsequently placed in ferric chloride solution, comes into operation again after copper-based bottom is corroded completely.
6. graphene constant temperature electric heating film according to claim 1, which is characterized in that the organic solvent be ethyl alcohol, acetone,
Acetonitrile, methylene chloride, triethylamine, dimethylformamide or carbon tetrachloride；
The resin is one of polyurethane resin, acrylic resin or epoxy resin；
The auxiliary agent includes dispersing agent, defoaming agent and levelling agent, and the dosage of three kinds of auxiliary agents is equal；
The alkanes substance is carbon atom number in one of 14 ~ 24 linear paraffin or branched paraffin.
7. a kind of preparation method of the described in any item graphene constant temperature electric heating films of claim 1 ~ 6, which is characterized in that specific step
It is rapid as follows:
1) graphene, alkanes substance, resin, organic solvent and auxiliary agent are sufficiently stirred and mixed slurry is made, slurry is applied
Cloth obtains conductive composite film after dry to membrane surface；
2) conductive electrode is set in conductive composite film two sides, then removes basement membrane；
3) insulating film is covered on conductive composite film two sides to get graphene constant temperature electric heating film is arrived.
8. preparation method according to claim 7, which is characterized in that the basement membrane be PP film, PE film, PVC film or
One of PTFE film；
The coating thickness of the slurry is 80 ~ 160 μm, and 20 ~ 40 μm of conductive composite film can be formed after dry；
The conductive electrode is printing conductive silver paste or copper slurry or pressing conductive copper adhesive tape or conductive fabric；
The insulating film is polyurethane film.
9. a kind of graphene, which is characterized in that have by two-dimensional graphene lamella and perpendicular to the one-dimensional carbon nanotube on its surface
In conjunction with the continuous integral structure of formation.
10. a kind of application of described in any item graphene constant temperature electric heating films of claim 1 ~ 6 in preparation Electric radiant Heating Film.
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| CN110002432A (en) * | 2019-03-01 | 2019-07-12 | 湖南医家智烯新材料科技股份有限公司 | A kind of multilevel structure graphene and its preparation method and application |
| CN110713821A (en) * | 2019-10-10 | 2020-01-21 | 杨道源 | Electric-conductive and heat-conductive composite material and preparation method thereof |
| CN113630914A (en) * | 2021-08-09 | 2021-11-09 | 山东启原纳米科技有限公司 | Composite resin heating element material and preparation method thereof |
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