CN109306549A - A kind of conductive coating graphene conductive fiber and preparation method - Google Patents
A kind of conductive coating graphene conductive fiber and preparation method Download PDFInfo
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- CN109306549A CN109306549A CN201811080661.4A CN201811080661A CN109306549A CN 109306549 A CN109306549 A CN 109306549A CN 201811080661 A CN201811080661 A CN 201811080661A CN 109306549 A CN109306549 A CN 109306549A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
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Abstract
The present invention proposes a kind of conductive coating graphene conductive fiber and preparation method, the graphene conductive fiber is sprayed by the exit orifice of Coaxial nozzle and centre bore respectively by shell and sandwich layer spinning solution to be collected, it is evenly dispersed and obtained through levelling agent again, wherein shell layer spinning solution is by poly- 3,4- ethylenedioxy thiophene, polyvinyl alcohol are added solvent and mix, sandwich layer spinning solution is scattered in n,N-dimethylacetamide solution by graphene, polyvinyl alcohol and is obtained.Graphene conductive fiber provided by the invention, by forming organic clad on surface, improve the compatibility of graphene and coating matrix, further utilize the effect of levelling agent, significantly improve the dispersibility of graphene, it can directly add and be used to prepare conductive coating, form efficient conductive network in coating, improve the electric conductivity of coating.
Description
Technical field
The present invention relates to functional coating technical field, more particularly to a kind of conductive coating graphene conductive fiber and
Preparation method.
Background technique
Conductive coating is the high speed development recently as coatings industry and modern industry and a kind of functional material occurred,
Refer to and be applied on non-conductive substrates, makes it have the coating of certain conduction electric current and dissipation electrostatic charge ability, film forming matter
Most of is insulation.The conductive coating special functional coating important as one kind that conduction uses, is widely used in preventing
The fields such as rotten, electromagnetic shielding, antistatic, electronics industry, building industry and in terms of all there is important reality
With value.
The traditional preparation method of conductive coating is in incorporation electrically conductive particles, and obtained coating has conducting function, while again
Many excellent characteristics with high molecular polymer, can the electricity and power of adjusting coating according to the needs of use in a big way
Performance is learned, and cost is relatively low, it is simple and easy, thus obtain relatively broad application.Common conductive filler has metal system to fill out
Material, carbon system filler, metal oxide system filler, compounded mix, novel nano conductive filler etc..
Currently, the high performance material that graphene is novel as the one kind applied in recent years, having enhances, is thermally conductive, conductive, electric
A variety of unique physical and chemical performances such as magnetic screen, optics, big specific surface area, strong interface interaction, show huge answer
Use potentiality.Therefore, graphene is considered as the perfect additive of conductive coating.However, being the layer of atomic level in view of graphene
Structure, the conducting function in coating are generated by mutual overlap of graphene uniform dispersion.If cannot effectively will be former
In coating, the performance of conductive modified can substantially reduce the graphene dispersion of sub- rank.On the other hand, graphene is storing
When, usually reunite because of nanoparticle effect, is either directly used in resin or prefabricated masterbatch, is required to decentralized processing.
Chinese invention patent application number 201610987772.8 discloses a kind of graphene modified water-soluble conductive coating, by stone
Black alkene modified water-based alkyd resin, aqueous alkide resin, water-based acrylic resin, ethylene glycol monobutyl ether, levelling agent, isopropanol,
Dispersing agent, nano silica, wetting agent, copper powder, zinc oxide and deionized water composition；Wherein, the polyurethane-modified water of graphene
Property alkyd resin is by plant oil fatty acid, organic acid anhydride, polyalcohol, polyacid, graphene, dihydromethyl propionic acid, polyisocyanate cyanogen
Acid esters, neutralizer and deionized water composition are made by reaction.Chinese invention patent application number 201711316629.7 discloses
A kind of highly conductive coating of containing graphene and the preparation method of coating, coating, to solve, existing coatings conductive property is poor to be asked
Topic；The coating includes basic coating, and the basic coating includes the component of following parts by weight: 8-12 parts of epoxy resin is modified
1-3 parts of graphene powder, 0.1-0.3 parts of anti-settling agent, 7-35 parts of dimethylbenzene, 3-15 parts of n-butanol, 0.01-0.03 parts of defoaming agent,
0.03-0.05 parts of levelling agent；Wherein, the modified graphene powder is the graphene oxide that surface grafting has silver powder.
The dispersibility of graphene, improves graphene conductive coating in conductive coating in order to improve addition graphene filler
Electric conductivity, it is necessary to propose a kind of conductive coating graphene conductive fiber, and then prevent the reunion of graphene, can assign and lead
The excellent electric conductivity of electrocoating paint.
Summary of the invention
When for conductive filler currently with graphene as coating, there are bad dispersibilities, and conductive effect is caused to be paid no attention to
The technical problems such as think, the present invention proposes a kind of conductive coating graphene conductive fiber and preparation method, so as to improve graphite
Dispersibility of the alkene in coating, improves the electric conductivity of coating.
To solve the above problems, the invention adopts the following technical scheme:
A kind of conductive coating graphene conductive fiber, the graphene conductive fiber by shell and sandwich layer spinning solution respectively by
The exit orifice and centre bore of Coaxial nozzle, which spray, collects, then evenly dispersed and obtained through levelling agent, and wherein shell layer spinning solution is by poly- 3,
4- ethylenedioxy thiophene, polyvinyl alcohol are added solvent and mix, and sandwich layer spinning solution is scattered in N, N- by graphene, polyvinyl alcohol
It is obtained in dimethylacetamide solution.
Preferably, the levelling agent is dimethyl silicone polymer, polymethylphenylsiloxane, alkyl-modified organosilicon oxygen
The combination of one or more of alkane, methyl acrylate, ethyl acrylate.
Preferably, the solvent is acetone, toluene, ethyl alcohol, triethylamine, phenol, chloroform, one in dimethyl sulfoxide
Kind.
The present invention also provides a kind of conductive coating preparation methods of graphene conductive fiber, and specific preparation method is such as
Under:
(1) poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol are added in solvent, are uniformly mixed, are configured to solution, it is quiet to obtain shell
Electrospun liquid；
(2) graphene, polyvinyl alcohol are added in n,N-dimethylacetamide, ultrasonic disperse is uniform, obtains sandwich layer electrostatic spinning
Liquid；
(3) electrostatic spinning machine is added in shell and sandwich layer spinning solution, silk is emitted by the exit orifice of Coaxial nozzle and centre bore respectively,
It is collected simultaneously using roller, obtains composite fibre；
(4) composite fibre is soaked in levelling agent, graphene is evenly dispersed under the action of levelling agent, and taking-up is placed on baking oven
Drying, obtains the conductive fiber of poly- 3,4-ethylene dioxythiophene coated graphite alkene, as graphene conductive fiber.
Preferably, in shell electrostatic spinning liquid described in step (1), solvent, poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol
Mass ratio be 100:4-8:1-2.
Preferably, the ultrasonic frequency of ultrasonic disperse described in step (2) is 30-40kHz, ultrasonic disperse 20-30min.
Preferably, in sandwich layer electrostatic spinning liquid described in step (2), n,N-dimethylacetamide, graphene, polyvinyl alcohol
Mass ratio be 100:12-16:1-2.
Preferably, in electrostatic spinning described in step (3), voltage 5-30kV, spinning flow velocity is 0.5-3.0mL/h,
The distance between spinning head and reception device are 10-30cm.
Preferably, in electrostatic spinning system described in step (3), sandwich layer spinning solution, shell layer spinning solution mass ratio be
100:40-60。
Preferably, the drying of baking oven described in step (4) uses vacuum drying oven, and temperature is 70-80 DEG C, time 12-14h.
The conductive coating that existing graphene is prepared as filler leads to the conductive effect of coating because of graphene dispersion unevenness
Fruit is undesirable, limits its application.In consideration of it, the present invention proposes a kind of conductive coating graphene conductive fiber and preparation side
Poly- 3,4-ethylene dioxythiophene and polyvinyl alcohol are mixed wiring solution-forming by method in a solvent, and shell electrostatic spinning liquid is made；By stone
Black alkene and polyvinyl alcohol, which are scattered in n,N-dimethylacetamide solution, to be ultrasonically treated, and sandwich layer electrostatic spinning liquid is made；By shell
It is sprayed by the exit orifice of Coaxial nozzle and centre bore with sandwich layer spinning solution, is collected using roller respectively；The compound of formation will be collected
Taking-up is placed in baking oven drying after fiber is soaked in levelling agent, obtains the modified Nano of poly- 3,4-ethylene dioxythiophene coated graphite alkene
Master batch of conductive fiber.Graphene conductive fiber provided by the invention improves graphene by forming organic clad on surface
With the compatibility of coating matrix, the effect of levelling agent is further utilized, the dispersibility of graphene is significantly improved, can directly add
It is used to prepare conductive coating, forms efficient conductive network in coating, improves the electric conductivity of coating.
The present invention proposes a kind of conductive coating graphene conductive fiber and preparation method, compared with prior art, dashes forward
Out the characteristics of and excellent effect are:
1, the present invention forms conductive polymer poly 3,4- by will spin after poly- 3,4-ethylene dioxythiophene and spinning matrix mixture
The core-shell structure of ethylenedioxy thiophene coated graphite alkene, the organic coating layer on surface improve graphene as conductive filler with
The compatibility of coating matrix improves the dispersibility of graphene, effectively prevents graphene because agglomeration leads to conductive effect
Undesirable defect.
2, the evenly dispersed of graphene is realized, being made after masterbatch can be straight by utilizing the effect of levelling agent in the present invention
It connects addition and is used to prepare conductive coating, form efficient conductive network in coating, improve the electric conductivity of coating.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
(1) poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol are added in solvent, are uniformly mixed, are configured to solution, it is quiet to obtain shell
Electrospun liquid；Solvent is acetone；In shell electrostatic spinning liquid, solvent, poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol mass ratio
Example is 100:7:2；
(2) graphene, polyvinyl alcohol are added in n,N-dimethylacetamide, ultrasonic disperse is uniform, obtains sandwich layer electrostatic spinning
Liquid；The ultrasonic frequency of ultrasonic disperse is 36kHz, ultrasonic disperse 26min；In sandwich layer electrostatic spinning liquid, N, N- dimethylacetamide
Amine, graphene, polyvinyl alcohol mass ratio be 100:15:1；
(3) electrostatic spinning machine is added in shell and sandwich layer spinning solution, silk is emitted by the exit orifice of Coaxial nozzle and centre bore respectively,
It is collected simultaneously using roller, obtains composite fibre；In electrostatic spinning, voltage 22kV, spinning flow velocity is 2.2mL/h, spinneret
The distance between head and reception device are 22cm；In electrostatic spinning system, sandwich layer spinning solution, shell layer spinning solution mass ratio be
100:52；
(4) composite fibre is soaked in levelling agent, graphene is evenly dispersed under the action of levelling agent, and taking-up is placed on baking oven
Drying, obtains the conductive fiber of poly- 3,4-ethylene dioxythiophene coated graphite alkene, as graphene conductive fiber；Levelling agent is poly-
Dimethyl siloxane；Baking oven drying uses vacuum drying oven, and temperature is 76 DEG C, time 13h.
Test method:
The graphene conductive fiber that the present embodiment is prepared is evenly dispersed in the epoxy according to mass ratio 20%, system
At conductive coating, then uniformly brushed in Q235 steel test piece, 30 DEG C solidify 1 week, with a thickness of 200 ± 5 μm after curing of coatings, system
At sample；
Sample is subjected to the performance test of graphene distribution characteristics and obtains coating using VEGA 3SBU type SEM sem test
SEM image observes dispersing character of the graphene in coating, obtains that the results are shown in Table 1；
Sample is subjected to conducting performance test, is tested using four probe resistance rate tester of SB100A/2 type, obtains conduction
The surface resistivity of coating, obtains that the results are shown in Table 1.
Comparative example 1
Comparative example 1 compared with Example 1, is not added with poly- 3,4-ethylene dioxythiophene, graphene conductive fiber obtained is using real
The method for applying example 1 is tested, and test result is as shown in table 1.
Embodiment 2
(1) poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol are added in solvent, are uniformly mixed, are configured to solution, it is quiet to obtain shell
Electrospun liquid；Solvent is toluene；In shell electrostatic spinning liquid, solvent, poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol mass ratio
Example is 100:4:1；
(2) graphene, polyvinyl alcohol are added in n,N-dimethylacetamide, ultrasonic disperse is uniform, obtains sandwich layer electrostatic spinning
Liquid；The ultrasonic frequency of ultrasonic disperse is 30kHz, ultrasonic disperse 20min；In sandwich layer electrostatic spinning liquid, N, N- dimethylacetamide
Amine, graphene, polyvinyl alcohol mass ratio be 100:12:1；
(3) electrostatic spinning machine is added in shell and sandwich layer spinning solution, silk is emitted by the exit orifice of Coaxial nozzle and centre bore respectively,
It is collected simultaneously using roller, obtains composite fibre；In electrostatic spinning, voltage 5kV, spinning flow velocity is 0.5mL/h, spinning head
The distance between reception device is 10cm；In electrostatic spinning system, sandwich layer spinning solution, shell layer spinning solution mass ratio be
100:40；
(4) composite fibre is soaked in levelling agent, graphene is evenly dispersed under the action of levelling agent, and taking-up is placed on baking oven
Drying, obtains the conductive fiber of poly- 3,4-ethylene dioxythiophene coated graphite alkene, as graphene conductive fiber；Levelling agent is poly-
Methyl phenyl siloxane；Baking oven drying uses vacuum drying oven, and temperature is 70 DEG C, time 14h.
It is tested using the method for embodiment 1, test result is as shown in table 1.
Comparative example 2
Comparative example 2 compared with Example 2, is not used levelling agent and impregnates, graphene conductive fiber obtained uses the side of embodiment 1
Method is tested, and test result is as shown in table 1.
Embodiment 3
(1) poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol are added in solvent, are uniformly mixed, are configured to solution, it is quiet to obtain shell
Electrospun liquid；Solvent is ethyl alcohol；In shell electrostatic spinning liquid, solvent, poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol mass ratio
Example is 100:8:2；
(2) graphene, polyvinyl alcohol are added in n,N-dimethylacetamide, ultrasonic disperse is uniform, obtains sandwich layer electrostatic spinning
Liquid；The ultrasonic frequency of ultrasonic disperse is 40kHz, ultrasonic disperse 2min；In sandwich layer electrostatic spinning liquid, N, N- dimethylacetamide
Amine, graphene, polyvinyl alcohol mass ratio be 100:16:2；
(3) electrostatic spinning machine is added in shell and sandwich layer spinning solution, silk is emitted by the exit orifice of Coaxial nozzle and centre bore respectively,
It is collected simultaneously using roller, obtains composite fibre；In electrostatic spinning, voltage 30kV, spinning flow velocity is 3.0mL/h, spinneret
The distance between head and reception device are 30cm；In electrostatic spinning system, sandwich layer spinning solution, shell layer spinning solution mass ratio be
100: 60；
(4) composite fibre is soaked in levelling agent, graphene is evenly dispersed under the action of levelling agent, and taking-up is placed on baking oven
Drying, obtains the conductive fiber of poly- 3,4-ethylene dioxythiophene coated graphite alkene, as conductive coating graphene conductive fiber；
Levelling agent is alkyl-modified organosiloxane；Baking oven drying uses vacuum drying oven, and temperature is 80 DEG C, time 12h.
It is tested using the method for embodiment 1, test result is as shown in table 1.
Embodiment 4
(1) poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol are added in solvent, are uniformly mixed, are configured to solution, it is quiet to obtain shell
Electrospun liquid；Solvent is triethylamine；In shell electrostatic spinning liquid, the quality of solvent, poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol
Ratio is 100:6:1.5；
(2) graphene, polyvinyl alcohol are added in n,N-dimethylacetamide, ultrasonic disperse is uniform, obtains sandwich layer electrostatic spinning
Liquid；The ultrasonic frequency of ultrasonic disperse is 35kHz, ultrasonic disperse 25min；In sandwich layer electrostatic spinning liquid, N, N- dimethylacetamide
Amine, graphene, polyvinyl alcohol mass ratio be 100:14:1.5；
(3) electrostatic spinning machine is added in shell and sandwich layer spinning solution, silk is emitted by the exit orifice of Coaxial nozzle and centre bore respectively,
It is collected simultaneously using roller, obtains composite fibre；In electrostatic spinning, voltage 20kV, spinning flow velocity is 2.0mL/h, spinning head
The distance between reception device is 20cm；In electrostatic spinning system, sandwich layer spinning solution, shell layer spinning solution mass ratio be
100:50；
(4) composite fibre is soaked in levelling agent, graphene is evenly dispersed under the action of levelling agent, and taking-up is placed on baking oven
Drying, obtains the conductive fiber of poly- 3,4-ethylene dioxythiophene coated graphite alkene, as graphene conductive fiber；Levelling agent is third
E pioic acid methyl ester；Baking oven drying uses vacuum drying oven, and temperature is 75 DEG C, time 13h.
It is tested using the method for embodiment 1, test result is as shown in table 1.
The conductive fiber that respectively obtains embodiment 1-4, comparative example 1-2 with batch emulsion acrylic resin with mass ratio
3::2 is uniformly dispersed, testing conductive after coating, as a result as shown in table 1 below:
Table 1:
| Performance indicator | Graphene dispersion feature | Conductivity (S/cm) |
| Embodiment 1 | It is evenly dispersed | 54.21 |
| Comparative example 1 | There are agglomerations | 1.13 |
| Embodiment 2 | It is evenly dispersed | 54.15 |
| Comparative example 2 | There are agglomerations | 9.98 |
| Embodiment 3 | It is evenly dispersed | 54.19 |
| Embodiment 4 | It is evenly dispersed | 54.25 |
Claims (10)
1. a kind of conductive coating graphene conductive fiber, which is characterized in that the graphene conductive fiber is by shell and sandwich layer
Spinning solution is sprayed by the exit orifice of Coaxial nozzle and centre bore respectively to be collected, then evenly dispersed and obtained through levelling agent, wherein shell
Layer spinning solution is added solvent and is mixed by poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol, and sandwich layer spinning solution is by graphene, poly- second
Enol is scattered in DMAC N,N' dimethyl acetamide solution and obtains.
2. a kind of conductive coating graphene conductive fiber according to claim 1, which is characterized in that the levelling agent is
Dimethyl silicone polymer, polymethylphenylsiloxane, alkyl-modified organosiloxane, methyl acrylate, in ethyl acrylate
A combination of one or more.
3. a kind of conductive coating graphene conductive fiber according to claim 1, which is characterized in that the solvent is third
One of ketone, toluene, ethyl alcohol, triethylamine, phenol, chloroform, dimethyl sulfoxide.
4. a kind of preparation method of the conductive coating described in any claim of claim 1-3 with graphene conductive fiber, feature
Be, it is specific the preparation method is as follows:
(1) poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol are added in solvent, are uniformly mixed, are configured to solution, it is quiet to obtain shell
Electrospun liquid；
(2) graphene, polyvinyl alcohol are added in n,N-dimethylacetamide, ultrasonic disperse is uniform, obtains sandwich layer electrostatic spinning
Liquid；
(3) electrostatic spinning machine is added in shell and sandwich layer spinning solution, silk is emitted by the exit orifice of Coaxial nozzle and centre bore respectively,
It is collected simultaneously using roller, obtains composite fibre；
(4) composite fibre is soaked in levelling agent, evenly dispersed under the action of levelling agent, taking-up is placed on baking oven drying,
Obtain the conductive fiber of poly- 3,4-ethylene dioxythiophene coated graphite alkene, as graphene conductive fiber.
5. a kind of preparation method of conductive coating graphene conductive fiber according to claim 4, which is characterized in that step
Suddenly in shell electrostatic spinning liquid described in (1), solvent, poly- 3,4-ethylene dioxythiophene, polyvinyl alcohol mass ratio be 100:
4-8:1-2。
6. a kind of preparation method of conductive coating graphene conductive fiber according to claim 4, which is characterized in that step
Suddenly the ultrasonic frequency of ultrasonic disperse described in (2) is 30-40kHz, ultrasonic disperse 20-30min.
7. a kind of preparation method of conductive coating graphene conductive fiber according to claim 4, which is characterized in that step
Suddenly in sandwich layer electrostatic spinning liquid described in (2), n,N-dimethylacetamide, graphene, polyvinyl alcohol mass ratio be 100:
12-16:1-2。
8. a kind of preparation method of conductive coating graphene conductive fiber according to claim 4, which is characterized in that step
Suddenly in electrostatic spinning described in (3), voltage 5-30kV, spinning flow velocity is 0.5-3.0mL/h, spinning head and reception device it
Between distance be 10-30cm.
9. a kind of preparation method of conductive coating graphene conductive fiber according to claim 4, which is characterized in that step
Suddenly in electrostatic spinning system described in (3), sandwich layer spinning solution, shell layer spinning solution mass ratio be 100:40-60.
10. a kind of preparation method of conductive coating graphene conductive fiber according to claim 4, which is characterized in that
The drying of baking oven described in step (4) uses vacuum drying oven, and temperature is 70-80 DEG C, time 12-14h.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511871A (en) * | 2021-06-10 | 2021-10-19 | 浙江忠信新型建材股份有限公司 | Thick-layer cement-based self-leveling mortar and construction method thereof |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113511871A (en) * | 2021-06-10 | 2021-10-19 | 浙江忠信新型建材股份有限公司 | Thick-layer cement-based self-leveling mortar and construction method thereof |
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Application publication date: 20190205 |