CN106676678B - Modified compound carbon fiber of graphene and the preparation method and application thereof - Google Patents
Modified compound carbon fiber of graphene and the preparation method and application thereof Download PDFInfo
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- CN106676678B CN106676678B CN201611257545.6A CN201611257545A CN106676678B CN 106676678 B CN106676678 B CN 106676678B CN 201611257545 A CN201611257545 A CN 201611257545A CN 106676678 B CN106676678 B CN 106676678B
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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
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
- D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
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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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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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
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/145—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
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- Inorganic Fibers (AREA)
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Abstract
The invention discloses modified compound carbon fibers of a kind of graphene and the preparation method and application thereof.The preparation method of the modified compound carbon fiber of the graphene includes: to be uniformly mixed functionalization graphene, carbon fiber precursor and solvent, the modified carbon fiber precursor solution of graphene is formed, as spinning solution；The modified carbon fiber precursor precursor of graphene is made through spinning technique with the spinning solution；Pre-oxidation treatment is carried out to the modified carbon fiber precursor precursor of the graphene, carries out carbonization treatment in protective atmosphere later, the modified compound carbon fiber of graphene is made.The excellent combination property of the modified compound carbon fiber of graphene of the present invention, wherein tensile strength up to 7.4GPa, stretch modulus up to 980GPa, conductivity up to 2.1 × 106S·m‑1, thermal coefficient is up to 68.7Wm‑1·K‑1, broad application prospect is all had in fields such as space flight, machinery, electronics, medical treatment, sport, while its preparation process is simple, controllability is good, is suitable for large-scale production.
Description
Technical field
The present invention relates to a kind of carbon fiber and its preparation process more particularly to a kind of high intensity, high thermal conductivity, superior electrical conductivity
With the compound carbon fiber of toughness and preparation method thereof.
Background technique
Carbon fiber is the inorganic polymer fiber that phosphorus content is higher than 90%.Different according to used raw material, carbon fiber can
It is divided into polyacrylonitrile (PAN) base carbon fibre, asphalt base carbon fiber and other organic fiber base carbon fibres etc..The high machine of carbon fiber collection
Tool intensity, high-modulus, low-gravity, high temperature resistant, chemical corrosion resistance and excellent electricity physical mechanical property are excellent in one
Performance and unique function, in spaceship, artificial satellite, space shuttle, guided missile, aviation and automobile, machine-building, electricity
The fields such as son, medical instrument, sport are with a wide range of applications.
In recent years, demand of the people to the novel carbon fiber with specific function is continuously increased, and is especially such as being enhanced
The fields such as material, function dress ornament, electromagnetic field, military affairs, craving obtains the carbon fiber with properties such as high strength & high electric-conductions always
Dimension.However existing carbon fibre material can not meet high intensity, high thermal conductivity, excellent conductive and toughness etc. simultaneously and require.
On the other hand, graphene is as a kind of novel carbon material, and having excellent in mechanical performance, (such as limiting modulus is
1.01TPa, ultimate strength 116GPa), the features such as light weight, thermal conductivity be good, large specific surface area, and show fabulous electronics
Transport property.These advantages based on graphene, researcher attempt presoma (including pitch, poly- third by it with carbon fiber
Alkene nitrile etc.) homogeneous blend prepares compound carbon fibre material, to improve the comprehensive performance of carbon fibre material.But inventor
It is found by a large number of experiments, commercially available grapheme material (including graphene oxide, redox graphene etc.) passes through simple
Stirring is difficult to be blended with the presoma of carbon fiber (including pitch, polyacrylonitrile etc.) uniformly, to limit graphene for carbon
The improvement and promotion of the performances such as the mechanics of fiber, electricity, thermally conductive.
Summary of the invention
The main purpose of the present invention is to provide a kind of graphenes to be modified compound carbon fiber and the preparation method and application thereof, with
Overcome deficiency in the prior art.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
The embodiment of the invention provides a kind of preparation methods of the modified compound carbon fiber of graphene comprising:
Functionalization graphene, carbon fiber precursor and solvent are uniformly mixed, the modified carbon fiber forerunner of graphene is formed
Liquid solution；
The carbon fiber precursor solution modified using the graphene is made graphene through spinning technique and changes as spinning solution
The carbon fiber precursor precursor of property；
The carbon fiber precursor precursor modified to the graphene carries out pre-oxidation treatment, later in protective atmosphere into
The modified compound carbon fiber of graphene is made in row carbonization treatment.
Further, active function groups are distributed in the functionalization graphene surface；Preferably, the active function groups packet
Include sulfonic acid group, xylene monosulfonic acid group or tosate etc..
Further, the average value of the functionalization graphene piece diameter is at 50 μm or more.
Further, the number of plies of the functionalization graphene is at 10 layers or less.
Further, dispersion concentration of the functionalization graphene in the solvent is in 10wt% or more.
Further, the carbon fiber precursor includes pitch or polyacrylonitrile resin etc., and without being limited thereto.
Further, the solvent includes dimethylbenzene, n,N-Dimethylformamide, n,N-dimethylacetamide, dimethyl
The combination of any one or more in sulfoxide, and it is without being limited thereto.
The embodiment of the invention also provides a kind of modified compound carbon fibers of graphene, especially by aforementioned any method system
The modified compound carbon fiber of standby graphene.
Further, the tensile strength of the modified compound carbon fiber of the graphene is 4.9~7.4GPa, and stretch modulus is
503~980GPa, conductivity are 7.5 × 104~2.1 × 106S·m-1, thermal coefficient is 3.4~68.7Wm-1·K-1。
The embodiment of the invention also provides the purposes of the modified compound carbon fiber of the graphene, such as in preparation strengthening material
Purposes in material, function dress ornament, mechanical equipment, electronic equipment or electromagnetic equipment.
The excellent combination property of the modified compound carbon fiber of graphene provided by the invention, wherein tensile strength is reachable
7.4GPa, stretch modulus are up to 980GPa, conductivity up to 2.1 × 106S·m-1, thermal coefficient is up to 68.7Wm-1·K-1,
It is obviously improved compared with existing carbon fibre material, all has in fields such as space flight, machinery, electronics, medical treatment, sport and widely answer
With prospect, while the preparation process of the modified compound carbon fiber of graphene provided by the invention is simple, and controllability is good, is suitable for scale
Production.
Specific embodiment
In view of deficiency in the prior art, inventor is studied for a long period of time and is largely practiced, and is able to propose of the invention
Technical solution will be described in detail as follows.
A kind of preparation method of the modified compound carbon fiber of graphene that the one aspect of the embodiment of the present invention provides includes:
Functionalization graphene, carbon fiber precursor and solvent are uniformly mixed, the modified carbon fiber forerunner of graphene is formed
Liquid solution；
The carbon fiber precursor solution modified using the graphene is made graphene through spinning technique and changes as spinning solution
The carbon fiber precursor precursor of property；
The carbon fiber precursor precursor modified to the graphene carries out pre-oxidation treatment, later in protective atmosphere into
The modified compound carbon fiber of graphene is made in row carbonization treatment.
In some embodiments, the preparation method may also include that
It disperses functionalization graphene powder in solvent, forms graphene dispersing solution；
It disperses carbon fiber precursor in solvent, forms carbon fiber precursor solution；
The graphene dispersing solution and the carbon fiber precursor solution blending is uniform, form what the graphene was modified
Carbon fiber precursor solution.
Wherein, to keep functionalization graphene powder evenly dispersed and obtain uniform and stable graphene dispersion in solvent
Liquid can be aided with ultrasound, the quickly operation such as stirring in dispersion process, ultrasonic treatment is particularly preferably accompanied by dispersion process.
Wherein, for allow carbon fiber precursor in solvent sufficiently dissolution and/or it is evenly dispersed, can also be mixed by the two
Heating and the operation such as lasting stirring or ultrasonic treatment are accompanied by during conjunction, and then obtain uniform carbon fiber precursor solution.
For example, the preparation method may include: by carbon fiber precursor point in some more specific embodiments
It dissipates in solvent, and the mixture of formation is heated to 30 DEG C~180 DEG C (preferably 90 DEG C~110 DEG C) and lasting stirring, system
Obtain the carbon fiber precursor solution.
In some preferred embodiment, the temperature of aforementioned pre-oxidation treatment be 200 DEG C~280 DEG C (preferably 240 DEG C~
260 DEG C), the time is 30min~90min (preferably 55min~65min).
Further, aforementioned pre-oxidation treatment is carried out in oxygen-containing atmosphere, is preferably carried out in air.
In some preferred embodiment, aforementioned protective atmosphere can be selected from inert atmosphere, such as nitrogen and/or helium gas
Atmosphere etc., and it is without being limited thereto.
In some preferred embodiment, the temperature of aforementioned carbonization treatment be 800 DEG C~1200 DEG C (preferably 1000 DEG C~
1100 DEG C), the time is 30min~90min (preferably 70min~80min).
In some preferred embodiment, functionalization graphene and carbon fiber contained by the modified carbon fiber precursor liquid of foregoing graphites alkene
The mass ratio for tieing up presoma is 0.1~5:100, preferably 0.5~2:100.Under this mass ratio, functionalization graphene can be
It is evenly dispersed in mixed system and well miscible with carbon fiber precursor.
In some preferred embodiment, carbon fiber precursor contained by the modified carbon fiber precursor liquid of foregoing graphites alkene is dense
Degree is 10wt%~25wt%, preferably 18wt%~22wt%.Under this concentration range, the modified carbon fiber of the graphene
Precursor liquid has suitable viscosity and intensity, conducive to uniform continuous tow is formed by spinning equipment.
Further, active function groups are distributed in aforementioned functionalization graphene surface, for example, can preferably be selected from sulfonic acid group,
Xylene monosulfonic acid group or tosate etc..
Further, the ratio of number of foregoing active functional group and six ring of carbon is 1:1~1:5, especially preferably 1:1~1:
3。
Further, the average value of the functionalization graphene piece diameter is at 50 μm or more, and preferably 50 μm~100 μm.
Further, the number of plies of the functionalization graphene is at 10 layers hereinafter, preferably 1 layer~2 layers.
Further, dispersion concentration of the functionalization graphene in the solvent is in 10wt% or more.
Further, aforementioned functionalization graphene is also referred to alternatively as large stretch of diameter functionalization graphene, special easily in solvent
Be not evenly dispersed in organic solvent, so be conducive to its with other materials compound tense, in evenly dispersed in compound system so that
The electric conductivity and mechanical property of graphene are fully demonstrated, this may be to significantly improve the comprehensive performance of compound carbon fiber
One of reason.
Further, aforementioned carbon fiber precursor includes pitch or polyacrylonitrile resin etc., and without being limited thereto.
Further, the solvent can be selected from organic solvent, such as dimethylbenzene, n,N-Dimethylformamide, N, N- diformazan
Any one in yl acetamide, dimethyl sulfoxide or two or more combinations, and it is without being limited thereto.
Further, aforementioned spinning technique includes wet spinning technology or dry-jet wet spinning process etc., and without being limited thereto.And phase
Spinning process condition, the operation etc. of pass are that industry is known, are no longer illustrated herein.
The modified compound carbon fiber of the graphene that the other side of the embodiment of the present invention provides can be by aforementioned any
Method preparation.
Further, the tensile strength of the modified compound carbon fiber of the graphene is 4.9~7.4GPa, and stretch modulus is
503~980GPa, conductivity are 7.5 × 104~2.1 × 106S·m-1, thermal coefficient is 3.4~68.7Wm-1·K-1。
Further, the graphene uniform dispersion in the modified compound carbon fiber of the graphene, and Two-dimensional morphology is remained,
The carbon material of itself and the basis material as the compound carbon fiber constructs the composite web of one-dimensional material and two-dimensional material jointly
Network, this may be the one of the major reasons for making the modified compound carbon fiber of the graphene have a series of superior functions above-mentioned.
Another aspect of the embodiment of the present invention additionally provides the purposes of the modified compound carbon fiber of the graphene, in preparation
Purposes in reinforcing material, function dress ornament, mechanical equipment, electronic equipment or electromagnetic equipment.
It, as follows will be in conjunction with several embodiments the present invention will be further explained explanation for a further understanding of the present invention.
But those skilled in the art can use for reference present disclosure, be suitably modified realization of process parameters.In particular, it should be pointed out that institute
There are similar replacement and change apparent to those skilled in the art, they are considered as being included in the present invention.
Application of the invention is described by preferred embodiment, and related personnel can obviously not depart from the content of present invention, essence
Application as described herein is modified or appropriate changes and combinations in mind and range, carrys out implementation and application the technology of the present invention.
Embodiment 1- embodiment 4:
A series of preparation process of the modified compound carbon fiber of graphenes involved in embodiment 1- embodiment 4 includes following step
It is rapid:
(1) dimethyl sulfoxide (DMSO) of two parts of equivalent is measured, a copy of it is added functionalization graphene powder, disperses
To the DMSO dispersion liquid of graphene；Polyacrylonitrile powder is added in another solvent, after 70 DEG C of heating water bath magnetic agitations are uniform
Obtain polyacrylonitrile solution；
(2) the DMSO dispersion liquid of functionalization graphene is added in polyacrylonitrile solution and is blended uniformly, obtain graphene
Modified polyacrylonitrile solution；
(3) polyacrylonitrile solution of the graphene modification obtained using step (2) is as spinning solution, through wet spinning technology
The modified polyacrylonitrile fibril of graphene is prepared；
(4) the modified polyacrylonitrile fibril of the graphene obtained step (3) in 250 DEG C of progress preoxidation time 60min,
Then 1000 DEG C of carbonization time 80min, obtained graphene are modified compound carbon fiber in a nitrogen atmosphere.
In previous embodiment 1- embodiment 4, contained by the modified polyacrylonitrile solution of the graphene made from abovementioned steps (2)
The concentration of polyacrylonitrile is 20wt%, and the mass concentration of graphene is respectively polyacrylonitrile content: 0.1%, 0.5%, 1%,
5%.
Raw material used by previous embodiment 1-4 such as dimethyl sulfoxide, polyacrylonitrile powder etc. can be obtained by commercially available approach
It takes.For example, polyacrylonitrile powder P90H: technical grade, Shaoxing Jie Ma composite material Co., Ltd.Dimethyl sulfoxide analyzes pure, state
Medicine.
The functionalization graphene that previous embodiment 1-4 is used can refer to CN103539105A and produce, and sulphur is distributed in surface
Acid groups isoreactivity functional group, piece diameter are about 50 μm~100 μm, and the number of plies is about 1 layer~2 layers, in the organic solvents such as DMSO
Dispersion concentration can reach 10wt%.
In addition, the step of previous embodiment 1-4 (1) and step (2) can also be replaced with: by functionalization graphene powder and
DMSO is added in polyacrylonitrile powder together, and it is molten that the modified polyacrylonitrile of graphene is obtained after 70 DEG C of heating water bath magnetic agitations are uniform
Liquid.The operation of step (3)-step (4) is continued with the modified polyacrylonitrile solution of obtained graphene again later.
Reference examples 1: the reference examples 1 and embodiment 1- embodiment 4 are essentially identical, but function is omitted in step (1), (2)
Carbon fiber is made in graphite alkene powder.
Reference examples 2- reference examples 5: reference examples 2- reference examples 5 and embodiment 1- embodiment 4 is essentially identical, but step (1),
(2) with commercially available graphene oxide (purchasing from Nanjing pioneer's nanosecond science and technology Co., Ltd) instead of function graphite above-mentioned in
Carbon fiber is made in alkene powder.Wherein additive amount of the graphene oxide in spinning solution accounts for polyacrylonitrile quality respectively
0.1%, 0.5%, 1%, 5%.
Correspondingly, the performance test knot of the modified compound carbon fiber of reference examples 1-2, the obtained graphene of embodiment 1- embodiment 4
Fruit sees the following table 1.
Table 1
| Number | Tensile strength (GPa) | Stretch modulus (GPa) | Conductivity (Sm-1) | Thermal coefficient (W/mK) |
| Reference examples 1 | 4.9 | 503 | 7.5×104 | 3.4 |
| Embodiment 1 | 5.7 | 626 | 1.6×105 | 10.5 |
| Embodiment 2 | 6.1 | 873 | 9.3×105 | 35.8 |
| Embodiment 3 | 7.4 | 980 | 2.1×106 | 68.7 |
| Embodiment 4 | 5.9 | 837 | 9.2×104 | 51.4 |
| Reference examples 2 | 5.1 | 545 | 8.5×104 | 5.2 |
| Reference examples 3 | 5.4 | 589 | 9.8×104 | 9.3 |
| Reference examples 4 | 5.9 | 632 | 1.5×105 | 11.4 |
| Reference examples 5 | 5.8 | 613 | 1.1×105 | 10.1 |
Embodiment 5- embodiment 9:
The operation of embodiment 5- embodiment 9 and embodiment 1- embodiment 4 are essentially identical, and difference is detailed in the following table 2.
Table 1
To tensile strength (GPa), the stretch modulus of the modified compound carbon fiber of the obtained graphene of embodiment 5- embodiment 9
(GPa), conductivity (Sm-1), thermal coefficient (W/mK) etc. are tested, with the 4 basic phase of product of embodiment 1- embodiment
Together.
In the present specification, the terms "include", "comprise" above-mentioned or its any other variant are intended to non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this
The personage of item technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
Equivalent change or modification made by Spirit Essence according to the present invention, should be covered by the protection scope of the present invention.
Claims (17)
1. a kind of preparation method of the modified compound carbon fiber of graphene, characterized by comprising:
It disperses functionalization graphene powder in solvent, forms graphene dispersing solution；
It disperses carbon fiber precursor in solvent, forms carbon fiber precursor solution；
The graphene dispersing solution and the carbon fiber precursor solution blending is uniform, before forming the modified carbon fiber of graphene
Drive liquid solution, the quality of functionalization graphene and carbon fiber precursor contained by the modified carbon fiber precursor solution of the graphene
Than for 0.5~5:100, the concentration of carbon fiber precursor contained by the modified carbon fiber precursor liquid of the graphene be 10wt%~
Active function groups are distributed in 25wt%, the functionalization graphene surface, and the active function groups include sulfonic acid group, dimethylbenzene
The combination of any one or more in sulfonic acid group or tosate, active function groups in the functionalization graphene
Ratio of number with six ring of carbon is 1:1~1:5, and the average value of the functionalization graphene piece diameter is 50 μm~100 μm, the function
The number of plies of energy graphite alkene is 1 layer~2 layers, and dispersion concentration of the functionalization graphene in the solvent is in 10wt% or more；
The carbon fiber precursor solution modified using the graphene is made what graphene was modified as spinning solution, through spinning technique
Carbon fiber precursor precursor；
Pre-oxidation treatment is carried out to the modified carbon fiber precursor precursor of the graphene, carries out carbon in protective atmosphere later
The modified compound carbon fiber of graphene is made in change processing.
2. preparation method according to claim 1, characterized by comprising: it disperses carbon fiber precursor in solvent,
And the mixture of formation is heated to 30 DEG C ~ 180 DEG C and lasting stirring, the carbon fiber precursor solution is made.
3. preparation method according to claim 2, characterized by comprising: it disperses carbon fiber precursor in solvent,
And the mixture of formation is heated to 90 DEG C~110 DEG C and lasting stirring, the carbon fiber precursor solution is made.
4. preparation method according to claim 1, it is characterised in that: the temperature of the pre-oxidation treatment is 200 DEG C~280
DEG C, the time is the min of 30 min~90；The pre-oxidation treatment is carried out in oxygen-containing atmosphere.
5. the preparation method according to claim 4, it is characterised in that: the temperature of the pre-oxidation treatment is 240 DEG C~260
DEG C, the time is 55min~65min.
6. the preparation method according to claim 4, it is characterised in that: the pre-oxidation treatment is to carry out in air.
7. preparation method according to claim 1, it is characterised in that: the protective atmosphere includes nitrogen and/or helium
Atmosphere.
8. preparation method according to claim 1, it is characterised in that: the temperature of the carbonization treatment is 800 DEG C~1200
DEG C, the time is 30min~90min.
9. preparation method according to claim 8, it is characterised in that: the temperature of the carbonization treatment is 1000 DEG C~1100
DEG C, the time is 70min~80min.
10. preparation method according to claim 1, it is characterised in that: the modified carbon fiber precursor liquid institute of the graphene
Mass ratio containing functionalization graphene and carbon fiber precursor is 0.5~2:100.
11. preparation method according to claim 1, it is characterised in that: the modified carbon fiber precursor liquid of the graphene
The concentration of contained carbon fiber precursor is 18wt%~22wt%.
12. preparation method according to claim 1, it is characterised in that: in the functionalization graphene active function groups with
The ratio of number of six ring of carbon is 1:1~1:3.
13. preparation method according to claim 1, it is characterised in that: the carbon fiber precursor includes pitch or poly- third
Alkene nitrile resin.
14. preparation method according to claim 1, it is characterised in that: the solvent includes dimethylbenzene, N, N- dimethyl methyl
Amide, DMAC N,N' dimethyl acetamide, any one or two or more combinations in dimethyl sulfoxide.
15. preparation method according to claim 1, it is characterised in that: the spinning technique include wet spinning technology or
Dry-jet wet spinning process.
16. by the modified compound carbon fiber of the graphene of any one of claim 1-15 the method preparation, tensile strength is
4.9 ~ 7.4GPa, stretch modulus are 503 ~ 980GPa, and conductivity is 7.5 × 104~2.1×106S·m-1, thermal coefficient be 3.4 ~
68.7 W·m-1·K-1。
17. the modified compound carbon fiber of graphene as claimed in claim 16 is set in preparing reinforcing material, function dress ornament, machinery
Purposes in standby, electronic equipment or electromagnetic equipment.
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| CN109576987B (en) * | 2018-11-15 | 2021-04-09 | 南昌航空大学 | Method for preparing graphene oxide grafted carbon fiber based on thiol chemical reaction |
| CN110241483B (en) * | 2019-05-21 | 2021-08-31 | 湖南东映碳材料科技有限公司 | Method for quickly pre-oxidizing mesophase pitch fibers |
| CN113445158A (en) * | 2021-07-22 | 2021-09-28 | 南通强生石墨烯科技有限公司 | Cutting-resistant graphene modified carbon fiber filament and preparation method thereof |
| CN115491801B (en) * | 2022-11-22 | 2023-01-13 | 天津红晨岛服饰有限公司 | Graphene, carbon fiber and silica gel composite heat-preservation spinning thread and preparation method thereof |
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| CN104630928A (en) * | 2015-02-13 | 2015-05-20 | 南京航空航天大学 | Preparation method of graphene based reinforced and flame-retarded recycled polyester staple fiber |
| CN104846466A (en) * | 2015-04-09 | 2015-08-19 | 浙江泰索科技有限公司 | High thermal conductivity polyacrylonitrile fiber and preparation method thereof |
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