CN108892796A - A kind of preparation method of silicon carbide nanometer line-carbon nano tube flexible composite heating film - Google Patents
A kind of preparation method of silicon carbide nanometer line-carbon nano tube flexible composite heating film Download PDFInfo
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- CN108892796A CN108892796A CN201810812203.9A CN201810812203A CN108892796A CN 108892796 A CN108892796 A CN 108892796A CN 201810812203 A CN201810812203 A CN 201810812203A CN 108892796 A CN108892796 A CN 108892796A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
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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
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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
- H05B3/148—Silicon, e.g. silicon carbide, magnesium silicide, heating transistors or diodes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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Abstract
The invention discloses a kind of silicon carbide nanometer line-carbon nano tube flexible composite heating film preparation methods.First silicon carbide nanometer line and carbon nanotube are pre-processed, then pretreated carbon nanotube and silicon carbide nanometer line are dissolved in ethyl alcohol after mixing by different proportion, the dispersion liquid that mass fraction is 5% is configured to after ultrasonic reaction, and it is coated on the polypropylene screen for posting copper conductor, it is sufficiently dry after the completion of coating, it is packaged using plastic packaging machine.Preparation section of the present invention is simple, process controllability is strong, obtained carbon nanotube/silicon carbide nanometer line flexible compound heating film, with fabulous flexibility, its surface texture still remains intact after multiple cripping test, and there is good thermal stability, being measured its heating surface temperature can reach 150 DEG C or more, and can achieve different heating effects by the ratio of control silicon carbide nanometer line and carbon nanotube.
Description
Technical field
The present invention relates to a kind of preparation method of composite heating film, in particular to a kind of silicon carbide nanometer line-carbon nanometers
The preparation method of pipe flexible compound heating film.
Background technique
Currently, the effective use of the energy has become the hot topic of discussion.In all multiple-energy-sources, electric energy is as a kind of clear
The clean energy has penetrated into production and various fields of recent life, electric-heating technology are also just more and more being used by people.Graphene,
Carbon nanotube, the New Type of Carbon such as carbon crystal heating film exothermic material " electric-thermal " high conversion efficiency warm up electric heating field with wide on ground
General application prospect, the in recent years concern by market.But there are still some problems for current graphene and carbon crystal heating board, such as
Heating rate is too fast, temperature-controllable is low and not resist bending etc..
Mechanics, electricity and the changes that carbon nanotube and silicon carbide nanometer line have many very excellent as monodimension nanometer material
Learn performance.Carbon nanotube/silicon carbide nanometer line heating film can withstand bending, repeatedly bending after product surface texture not
It is destroyed, and resistance is also able to maintain stabilization, therefore prepares the flexible heating base material ability with high heating efficiency, high heat conductance
It is following mainstream, there is presently no relevant research and reports.
Summary of the invention
In order to solve the problems in background technique, a kind of the present invention provides process controllabilities strong, high-efficient silicon carbide
Nano wire-carbon nano tube flexible composite heating film preparation method.By carbon nanotube and silicon carbide nanometer line by different proportion into
Row mixing, obtained composite heating film have high heating efficiency, high-flexibility and excellent thermal stability.
The present invention adopts the following technical scheme that：
1) carbon nanotube is pre-processed：Carbon nanometer tube material is put into round-bottomed flask, sulfuric acid is added and nitric acid is uniformly mixed
After be put into oil bath pan and carry out reflow treatment, for removing the impurity in carbon pipe and being modified to it, by the solution after reflux
It pours into deionized water, is 7 by filtering deacidification repeatedly to filtrate PH, is carried out after carbon nanotube is then configured to dispersion solution
Sieving processing will finally be ground after the carbon nanotube drying completely after sieving using quartzy mortar for refining the carbon nanotube reunited
Mill is sufficiently rear spare；
2) silicon carbide nanometer line is pre-processed：Silicon carbide nanometer line is dissolved in decentralized medium, silane coupling agent is then added dropwise
Processing is modified to silicon carbide nanometer line as dispersing agent, is handled using sieving is carried out after magnetic stirrer for refining
The silicon carbide nanometer line of reunion is filtered after sieving processing using Suction filtration device, finally by filtered silicon carbide nanometer line
It is sufficiently rear spare using quartzy mortar grinder after drying is complete；
3) carbon nano tube dispersion liquid or carbon nanotube/silicon carbide nanometer line dispersion liquid are prepared：It will be received by pretreated carbon
Mitron is dissolved in ethyl alcohol by the silicon carbide nanometer line and carbon nanotube of different proportion mixing, is then placed in ultrasonic machine and is surpassed
Sonication, dispersion obtain carbon nanotube/silicon carbide nanometer line dispersion liquid of carbon nano tube dispersion liquid or different proportion mixing；
4) carbon nanotube heating film or silicon carbide nanometer line-carbon nano tube flexible composite heating film are prepared：What is cut out
Polypropylene screen both ends copper-surfaced conducting wire, respectively by step 3) prepare homogeneous dispersion be coated on film on copper conductor after be dried
Processing, then proceedes to repetitive coatings and dry work is completed until coating, and is packaged after well-dried up to required
Flexible compound heating film.
The process for preparation of carbon nanotube dispersion solution is that carbon nanotube is dissolved in dispersing agent N, N- diformazan in the step 1)
In base formamide, it is configured to the carbon nanotube dispersion solution of mass fraction 5%.
Carbon nanotube in the step 1), sulfuric acid, nitric acid mass ratio be 0.1:3:1.
Decentralized medium is ethyl alcohol and ethylene glycol in the step 2), and dispersing agent is γ-glycidyl ether oxygen propyl trimethoxy
Base silane.
Ethyl alcohol, ethylene glycol, γ-glycidyl ether oxygen propyl trimethoxy silicane volume ratio are 1 in the step 2):3:
0.1, silicon carbide nanometer line and entire dispersion mass ratio are 1:10, entire dispersion is to contain ethyl alcohol, ethylene glycol, γ-
The entire dispersion solution of glycidyl ether oxygen propyl trimethoxy silicane and silicon carbide nanometer line.
Sieving processing is carried out using 60 mesh copper mesh filter screen in the step 1) and step 2).
Carbon nanotube and silicon carbide nanometer line mixing mass ratio are 1 in the step 3):0.5-2.
The film coated in the step 4) is polypropylene screen；Packaging system is plastic sealing machine.
The present invention carries out special preparation by above-mentioned carbon nanotube and silicon carbide nanometer line, and creatively by carbon nanometer
Pipe and silicon carbide nanometer line are mixed with, and the composite heating film with superperformance can be finally obtained.
Beneficial effects of the present invention：
It is commercial paraphernalia that the present invention, which prepares agents useful for same, is not necessarily to cumbersome preparation, and preparation process simple process, easily grasps
Make.
Carbon nanotube obtained by the present invention/silicon carbide flexible compound heating film has good flexibility, can be with sensitive paper
Bending curling processing is equally carried out, and reinstatement rear surface structure still remains intact, and heating property and is not affected by shadow
It rings, there is good thermal stability, being measured its heating surface temperature can reach 150 DEG C or more, and pass through control carbonization
The ratio of silicon nanowires and carbon nanotube can achieve different heating effects, and technique is controllable.
Detailed description of the invention
Fig. 1 is silicon carbide nanometer line-carbon nano tube flexible composite heating film digital photograph made from the method for the present invention；
Fig. 2 is scanning electron microscope (SEM) photo of pure nano-carbon tube flexibility heating film made from the method for the present invention；
Fig. 3 is silicon carbide nanometer line-carbon nano tube flexible composite heating film scanning electron microscope made from the method for the present invention
(SEM) photo；
Fig. 4 is silicon carbide nanometer line-carbon nano tube flexible composite heating film voltage-temperature made from the method for the present invention
Curve；
Fig. 5 is silicon carbide nanometer line-carbon nanotube composite heating film flexibility test chart made from the method for the present invention
Piece.
Specific embodiment
The present invention is further illustrated with attached drawing with reference to embodiments.
The embodiment of the present invention is as follows：
Embodiment 1
Step a：Carbon nanometer tube material is put into round-bottomed flask, sulfuric acid is added and nitric acid is uniformly mixed, is put into 120 DEG C of oil
Flow back 8h in bath, removes the impurity in carbon pipe and is modified to it.Wherein carbon nanotube, sulfuric acid, nitric acid mass ratio are
0.1：3：1.Carbon pipe solution after reflux is poured into deionized water, the method by filtering repeatedly, removes the acid in solution, when
It filters and completes when filtrate ph is 7.Filtered carbon nanotube is dissolved in n,N-Dimethylformamide, mass fraction is configured to
Then 5% carbon nano tube dispersion liquid carries out the carbon nanotube that sieving processing refinement is reunited using the copper mesh filter screen of 60 mesh, will
Carbon nanotube after sieving is put into 80 DEG C of baking ovens and dries, and dries complete rear sufficiently rear spare using quartzy mortar grinder.
Step b：It will be dissolved in ethyl alcohol by pretreated carbon nanotube, and be configured to the carbon nanotube point of mass fraction 5%
Dispersion liquid is then placed in ultrasonic machine and is ultrasonically treated 1h, and it is spare to obtain finely dispersed carbon nano tube dispersion liquid.
Step c：In the polypropylene screen both ends copper-surfaced conducting wire cut out, the carbon nano tube dispersion liquid that step b is prepared is uniform
Coated on film on copper conductor after be dried, then proceed to repetitive coatings and dry work until coating is completed, warp
Sufficiently it is packaged after drying using plastic sealing machine up to required flexible carbon nano tube heating film.
Test process (test process of all embodiments is same as Example 1)：
Heating efficiency：The flexible compound heating film for taking a preparation, connects AC electronic voltage regulator by copper conductor, will be electric
Pressure carried out as unit of 10V since 0 ing it is incremental, it is warm in the place measurement from film surface 5cm using high precision infrared temperature measurement gun
Degree persistently increases voltage until temperature no longer changes, records the temperature value under different voltages.
Flexibility test：After the heating film sensitive paper of preparation equally bending fold ten times, surface texture is observed, is not affected by
It destroys；Then its heating efficiency is tested, is not changed if folding front and back heat generation rate, proves that the composite heating film of preparation has pole
Good flexibility.
Test result：
As can be seen that it is uniform that the carbon nano tube flexible fever film surface after envelope modeling, which coats, from the digital photograph of Fig. 1；
It can be seen that carbon nanotube Stagger-wrap constitutes a mesh system from the SEM spectrum of Fig. 2；
It can be seen that carbon nanotube heating film with pressure increase heating rate quickly from the pressure-temperature curve graph of Fig. 4,
150 degrees Celsius are just reached when 100V, but as voltage increase is temperature-resistant, have illustrated that its ceiling temperature is 150 DEG C.Due to fever
The calorific value of film is better with the smaller thermal stability for embodying product of change rate of voltage, and temperature rapidly increases it is easier that sending out
Hotting mask surface uneven heating leads to the phenomenon that generating regional area envelope plastic film overheat and burning.
As can be seen that the carbon nanotube heating film of preparation can equally be crimped with sensitive paper from Fig. 5 flexibility test chart, and it is extensive
Its surface texture and heating property do not receive influences after restoring shape, it was demonstrated that the carbon nanotube heating film of preparation is with fabulous
Flexibility.
Embodiment 2
Step a is same as Example 1.
Step b：Silicon carbide nanometer line is dissolved in the decentralized medium of ethyl alcohol and ethylene glycol composition, γ-glycidol is added dropwise
Ether oxygen propyl trimethoxy silicane is modified processing to silicon carbide nanometer line as dispersing agent, wherein ethyl alcohol, ethylene glycol, γ-
Glycidyl ether oxygen propyl trimethoxy silicane volume ratio is 1：3：0.1.Silicon carbide nanometer line and entire dispersion mass ratio
It is 1:10.Using magnetic stirrer 4h, the carbon that sieving processing refinement is reunited then is carried out using the copper mesh filter screen of 60 mesh
SiClx nano wire is filtered using Suction filtration device after sieving processing, the silicon carbide nanometer line filtered is put into 80 DEG C of baking ovens
Middle drying, it is sufficiently rear spare using quartzy mortar grinder.
Step c：It will be by pretreated carbon nanotube and silicon carbide nanometer line in mass ratio 1:Second is dissolved in after the mixing of 1 ratio
In alcohol, it is configured to carbon nanotube/silicon carbide nanometer line dispersion liquid of mass fraction 5%, is then placed in ultrasonic machine and carries out ultrasound
1h is handled, it is spare to obtain finely dispersed carbon nanotube/silicon carbide nanometer line dispersion liquid；
Step d：In the polypropylene screen both ends copper-surfaced conducting wire cut out, the homogeneous dispersion for respectively preparing step c is coated
In film on copper conductor after be dried, then proceed to repetitive coatings and dry work until coating is completed, through abundant
It is packaged after drying up to required flexible compound heating film.
Test result：
As can be seen that sealing carbon nanotube and silicon carbide nanometer line 1 after modeling from the digital photograph of Fig. 1:1 mixed flexibility is multiple
It is uniform for closing fever film surface coating；It can be seen that carbon nanotube bending is wrapped in rodlike silicon carbide week from the SEM spectrum of Fig. 3
The phenomenon that enclosing, mingling mutually together, mutually winding is presented, it can be seen that carbon nanotube with silicon carbide nanometer line is interlaced twines
It is coiled into mesh system；It can be seen that from the pressure-temperature curve graph of Fig. 4 compared to carbon nanotube heating film, carbon nanotube and carbon
SiClx nano wire 1:1 mixed flexible compound heating film slightly slows down with the heating rate of pressure increase, and when 160V can reach 180
DEG C, illustrate that the addition of silicon carbide nanometer line can slow down the heating rate of flexible compound heating film, slows down hot-spot phenomenon
Generation, have better thermal stability.
The flexibility test of the present embodiment is similar to embodiment 1, as shown in figure 5, prepared composite heating film has pole
Good flexibility.
Embodiment 3
Step a, b is same as Example 2.
Step c：It will be by pretreated carbon nanotube and silicon carbide nanometer line in mass ratio 1:It is dissolved in after the mixing of 1.5 ratios
In ethyl alcohol, it is configured to carbon nanotube/silicon carbide nanometer line dispersion liquid of mass fraction 5%, is then placed in ultrasonic machine and is surpassed
It is spare to obtain finely dispersed carbon nanotube/silicon carbide nanometer line dispersion liquid by sonication 1h；
Step d：In the polypropylene screen both ends copper-surfaced conducting wire cut out, the homogeneous dispersion for respectively preparing step c is coated
In film on copper conductor after be dried, then proceed to repetitive coatings and dry work until coating is completed, through abundant
It is packaged after drying up to required flexible compound heating film.
Test result：
The atlas analysis of Fig. 1 and Fig. 3 is same as Example 2.
It can be seen that from the pressure-temperature curve graph of Fig. 4 compared to carbon nanotube heating film and carbon nanotube and carbonization
The composite heating film of silicon different mixing proportion, carbon nanotube and silicon carbide nanometer line 1:1.5 mixed flexible compound heating films with
It is the most obvious that the heating rate of pressure increase slows down effect, and 178 DEG C are reached in 240V, and continues to increase voltage and can tie up always
Hold the temperature.Illustrate carbon nanotube and silicon carbide nanometer line mixed proportion is 1:Heating speed can be slowed down when 1.5 to greatest extent
Rate has best thermal stability.
The flexibility test of the present embodiment is similar to embodiment 1, as shown in figure 5, prepared composite heating film has pole
Good flexibility.
Embodiment 4
Step a, b is same as Example 2.
Step c：It will be by pretreated carbon nanotube and silicon carbide nanometer line in mass ratio 1.5:It is dissolved in after the mixing of 1 ratio
In ethyl alcohol, it is configured to carbon nanotube/silicon carbide nanometer line dispersion liquid of mass fraction 5%, is then placed in ultrasonic machine and is surpassed
It is spare to obtain finely dispersed carbon nanotube/silicon carbide nanometer line dispersion liquid by sonication 1h；
Step d：In the polypropylene screen both ends copper-surfaced conducting wire cut out, the homogeneous dispersion for respectively preparing step c is coated
In film on copper conductor after be dried, then proceed to repetitive coatings and dry work until coating is completed, through abundant
It is packaged after drying up to required flexible compound heating film.
Test result：
The atlas analysis of Fig. 1 and Fig. 3 is same as Example 2.
It can be seen that from the pressure-temperature curve graph of Fig. 4 compared to carbon nanotube heating film, carbon nanotube and silicon carbide
Nano wire 1:2 mixed flexible compound fever film temperatures are slowed down with the heating rate of pressure increase, but are slowed down effect and be inferior to
Composite heating film prepared by embodiment 3.
The flexibility test of the present embodiment is similar to embodiment 1, as shown in figure 5, prepared composite heating film has pole
Good flexibility.
Embodiment 5
Step a, b is same as Example 2.
Step c：It will be by pretreated carbon nanotube and silicon carbide nanometer line in mass ratio 1.5:It is dissolved in after the mixing of 1 ratio
In ethyl alcohol, it is configured to carbon nanotube/silicon carbide nanometer line dispersion liquid of mass fraction 5%, is then placed in ultrasonic machine and is surpassed
It is spare to obtain finely dispersed carbon nanotube/silicon carbide nanometer line dispersion liquid by sonication 1h；
Step d：In the polypropylene screen both ends copper-surfaced conducting wire cut out, the homogeneous dispersion for respectively preparing step c is coated
In film on copper conductor after be dried, then proceed to repetitive coatings and dry work until coating is completed, through abundant
It is packaged after drying up to required flexible compound heating film.
Test result：
The atlas analysis of Fig. 1 and Fig. 3 is same as Example 2.
It can be seen that carbon nanotube and silicon carbide nanometer line 1.5 from the pressure-temperature curve graph of Fig. 4:1 mixed flexibility
Composite heating film temperature is coincide substantially with the heating curve and embodiment 4 of pressure increase, illustrates the mixed of embodiment 4 and embodiment 5
The flexible compound heating film of composition and division in a proportion example preparation has extremely similar heating effect.
The flexibility test of the present embodiment is similar to embodiment 1, as shown in figure 5, prepared composite heating film has pole
Good flexibility.
Embodiment 6
Step a, b is same as Example 2.
Step c：It will be by pretreated carbon nanotube and silicon carbide nanometer line in mass ratio 2:Second is dissolved in after the mixing of 1 ratio
In alcohol, it is configured to carbon nanotube/silicon carbide nanometer line dispersion liquid of mass fraction 5%, is then placed in ultrasonic machine and carries out ultrasound
1h is handled, it is spare to obtain finely dispersed carbon nanotube/silicon carbide nanometer line dispersion liquid；
Step d：In the polypropylene screen both ends copper-surfaced conducting wire cut out, the homogeneous dispersion for respectively preparing step c is coated
In film on copper conductor after be dried, then proceed to repetitive coatings and dry work until coating is completed, through abundant
It is packaged after drying up to required flexible compound heating film.
Test result：
The atlas analysis of Fig. 1 and Fig. 3 is same as Example 2.
It can be seen that carbon nanotube and silicon carbide nanometer line 2 from the pressure-temperature curve graph of Fig. 4:1 mixed flexibility is multiple
It closes fever film temperature and is only second to carbon nanotube heating film with the heating rate of pressure increase, it can be seen that silicon carbide nanometer line adds
Entering the change rate for reducing calorific value with voltage, the addition of appropriate silicon carbide nanometer line can greatly improve thermal stability, wherein
The most it is apparent that ratio is 1 in embodiment 3:1.5 carbon nanotube and the sample of silicon carbide nanometer line, can farthest mention
High thermal stability, and Effective Regulation can be subject to the calorific value of heating film.
The flexibility test of the present embodiment is similar to embodiment 1, as shown in figure 5, prepared composite heating film has pole
Good flexibility.
Experimental results of the present invention are summarized：
The calorific value of heating film is better with the smaller thermal stability for embodying product of change rate of voltage, can from Fig. 4
To find out change rate that the addition of silicon carbide nanometer line reduces calorific value with voltage, the addition of appropriate silicon carbide nanometer line can be big
It is big to improve thermal stability, wherein the most it is apparent that ratio is 1:1.5 carbon nanotube and the sample of silicon carbide nanometer line, can
Thermal stability is farthest improved, and Effective Regulation can be subject to the calorific value of heating film.
By heating film repeat bending after carry out heating property test, it can be found that bending front and back heating film surface temperature with
Voltage increases heating rate and does not change significantly, that is, bends the thermal stability for not destroying heating film.It can be said that
Bright bending do not have an impact to its heating efficiency, it was demonstrated that the flexible compound heating film of preparation has fabulous flexibility.
Claims (9)
1. a kind of silicon carbide nanometer line-carbon nano tube flexible composite heating film preparation method, which is characterized in that including as follows
Step：
1) carbon nanotube is pre-processed：Carbon nanometer tube material is put into round-bottomed flask, sulfuric acid is added and nitric acid is put after mixing
Enter and carry out reflow treatment in oil bath pan, the solution after reflux is poured into deionized water, by filtering deacidification repeatedly to filtrate PH
It is 7, carries out sieving processing after carbon nanotube is then configured to dispersion solution, finally dries the carbon nanotube after sieving complete
It is sufficiently rear spare using quartzy mortar grinder afterwards；
2) silicon carbide nanometer line is pre-processed：Silicon carbide nanometer line is dissolved in decentralized medium, silane coupling agent conduct is then added dropwise
Dispersing agent is modified processing to silicon carbide nanometer line, using carrying out sieving processing after magnetic stirrer, after sieving processing
It is filtered using Suction filtration device, it finally will be abundant using quartzy mortar grinder after the drying completely of filtered silicon carbide nanometer line
It is spare afterwards；
3) carbon nano tube dispersion liquid or carbon nanotube/silicon carbide nanometer line dispersion liquid are prepared：Pretreated carbon nanotube will be passed through
Or be dissolved in ethyl alcohol by the silicon carbide nanometer line and carbon nanotube of different proportion mixing, it is then placed in ultrasonic machine and carries out at ultrasound
Reason, dispersion obtain carbon nanotube/silicon carbide nanometer line dispersion liquid of carbon nano tube dispersion liquid or different proportion mixing；
4) carbon nanotube heating film or silicon carbide nanometer line-carbon nano tube flexible composite heating film are prepared：In poly- third cut out
Place is dried after the homogeneous dispersion that step 3) is prepared is coated on film and copper conductor respectively in alkene film both ends copper-surfaced conducting wire
Reason then proceedes to repetitive coatings and dry work until coating is completed, and is packaged after well-dried up to required soft
Property composite heating film.
2. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
It is, the process for preparation of carbon nanotube dispersion solution is that carbon nanotube is dissolved in dispersing agent N, N- dimethyl methyl in the step 1)
In amide, it is configured to the carbon nanotube dispersion solution of mass fraction 5%.
3. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
Be, carbon nanotube in the step 1), sulfuric acid, nitric acid mass ratio be 0.1:3:1.
4. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
It is, decentralized medium is ethyl alcohol and ethylene glycol in the step 2), and dispersing agent is γ-glycidyl ether oxygen propyl trimethoxy silicon
Alkane.
5. silicon carbide nanometer line according to claim 4-carbon nano tube flexible composite heating film preparation method, feature
It is, ethyl alcohol, ethylene glycol, γ-glycidyl ether oxygen propyl trimethoxy silicane volume ratio are 1 in the step 2):3:
0.1, silicon carbide nanometer line and entire dispersion mass ratio are 1:10.
6. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
It is, carries out sieving processing using 60 mesh copper mesh filter screen in the step 1) and step 2).
7. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
It is, carbon nanotube and silicon carbide nanometer line mixing mass ratio are 1 in the step 3):0.5-2.
8. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
It is, the film coated in the step 4) is polypropylene screen.
9. silicon carbide nanometer line according to claim 1-carbon nano tube flexible composite heating film preparation method, feature
It is, the packaging system in the step 4) is plastic sealing machine.
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| CN113471464A (en) * | 2021-05-19 | 2021-10-01 | 深圳先进技术研究院 | Material for battery diaphragm, material preparation method and battery diaphragm |
| CN114621612A (en) * | 2022-04-02 | 2022-06-14 | 成都大学 | Preparation method of CNT/SiCNWs composite wave-absorbing material modified by in-situ grown carbon nanotubes |
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