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CN112921658A - Asphalt-based carbon fiber composite material and preparation method thereof - Google Patents

Asphalt-based carbon fiber composite material and preparation method thereof Download PDF

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Publication number
CN112921658A
CN112921658A CN202011610070.0A CN202011610070A CN112921658A CN 112921658 A CN112921658 A CN 112921658A CN 202011610070 A CN202011610070 A CN 202011610070A CN 112921658 A CN112921658 A CN 112921658A
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Prior art keywords
asphalt
temperature
carbon fiber
treatment
based carbon
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CN202011610070.0A
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Chinese (zh)
Inventor
许震飞
许嘉怡
许一白
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Tianjin Damai Technology Co ltd
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Tianjin Damai Technology Co ltd
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Priority to CN202011610070.0A priority Critical patent/CN112921658A/en
Publication of CN112921658A publication Critical patent/CN112921658A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/145Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/01Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/58Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
    • D06M11/64Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/40Fibres of carbon

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Fibers (AREA)

Abstract

The invention discloses an asphalt-based carbon fiber composite material and a preparation method thereof, wherein a base raw material is obtained by melting an asphalt base; carrying out melt spinning on the basic raw material to obtain filamentous asphalt; sequentially bundling, bundling and drying the filamentous asphalt and the composite oil agent to obtain asphalt protofilaments; pre-oxidizing the asphalt protofilament to obtain asphalt fibers; carbonizing and graphitizing the obtained pitch fiber to obtain carbon fiber; the obtained asphalt fiber is subjected to agent removal treatment and then placed in concentrated nitric acid, the performance of the carbon fiber is effectively improved on the basis of spinning based on asphalt base, viscose base and polyacrylonitrile base as raw materials, saturated solution of nitric acid, lithium aluminum hydride/tetrahydrofuran and silane coupling agent solution are sequentially subjected to carboxylation and hydroxylation treatment to form a modified coating of a toughened polymer system on the surface of the asphalt base carbon fiber, and the performance of the asphalt base carbon fiber composite material is greatly improved.

Description

Asphalt-based carbon fiber composite material and preparation method thereof
Technical Field
The invention relates to the technical field of carbon fibers, in particular to an asphalt-based carbon fiber composite material and a preparation method thereof.
Background
The pitch-based carbon fiber is mainly applied to the fields of aviation, aerospace, war industry, civil industry and buildings. The carbon fiber-based composite material is widely applied to aerospace industries such as rockets, missiles, high-speed aircrafts and the like due to unique and excellent physical and chemical properties. For example, spacecraft such as airplanes, satellites, rockets and the like which are made of composite materials made of carbon fibers and plastics have high thrust and low noise; and because its quality is lighter, so the power consumption is few, can save a large amount of fuel. The asphalt-based carbon fiber composite material has outstanding wear resistance, high strength, small deformation and good self-lubricating property, and can be widely used for manufacturing friction-resistant materials such as brake pads, shaft plates, rolling plates and clutches of brakes of airplanes, automobiles and racing cars; sealing and heat insulating materials such as sealing filler, gasket, high temperature resistant, corrosion resistant, heat insulating and heat preserving materials; antistatic materials such as antistatic clothing, carpets, floors, fabrics, circuit boards, electrical appliances, operation panels, etc.; electromagnetic shielding materials such as communication equipment, computers, typewriters, telephones, nuclear reactor protection materials; the electrode material is used for electrodes in hydrogen fuel cells, and small-sized high-capacity storage batteries and electrodes; burning materials: burning, coating, burning paint and flame-retardant fireproof material; reinforcing materials: especially, in the construction industry, the carbon fiber composite material prepared by mixing 3-5% of carbon fiber and cement can be made into structural beams, columns and floors of buildings. The novel steel bar reinforced concrete composite material has the advantages of small volume, light weight, high strength, safety and reliability, can reduce earthquake damage coefficient and shorten construction period, and the carbon fiber can replace steel bars in the future. This will be an important sign of material renewal. The performance of the composite material prepared by adding a certain amount of carbon fiber into plastic, rubber and resin is greatly improved.
The existing carbon fiber material is generally asphalt-based, and the performance of the carbon fiber material can be improved, so that an asphalt-based carbon fiber composite material and a preparation method thereof are provided.
Disclosure of Invention
The invention aims to provide an asphalt-based carbon fiber composite material and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of an asphalt-based carbon fiber composite material comprises the following steps:
step 1: melting the asphalt base to obtain a base raw material;
step 2: carrying out melt spinning on the basic raw material in the step 1 to obtain filamentous asphalt;
and step 3: sequentially bundling, bundling and drying the filamentous asphalt and the composite oil agent to obtain asphalt protofilaments;
and 4, step 4: pre-oxidizing the asphalt protofilament to obtain asphalt fibers;
and 5: carbonizing and graphitizing the pitch fiber obtained in the step 4 to obtain carbon fiber;
step 6: removing the agent from the asphalt fiber obtained in the step 5, then placing the asphalt fiber in concentrated nitric acid, taking out the asphalt fiber after condensing and refluxing for 7-15 h at the temperature of 60-80 ℃, then placing the asphalt fiber in a saturated solution of lithium aluminum hydride/tetrahydrofuran, condensing and refluxing for 4-6 h at the temperature of 40-60 ℃, taking out the asphalt fiber, and cleaning and drying the asphalt fiber;
and 7: modification of rigid macromolecules: and (2) dropwise adding hydrochloric acid into 120-220 ml of tris buffer until the pH value of the solution is 8.8, placing 0.3-0.5 g of aminated asphalt-based carbon fiber in the solution for dispersion, adding 0.1-0.2 g of dopamine into the solution, standing at room temperature for reaction for 12-24 h, taking out the asphalt-based carbon fiber, cleaning and drying to obtain the asphalt-based carbon fiber.
As a further scheme of the invention: and (3) placing the aminated asphalt-based carbon fiber in the step (7) into a solution, and performing ultrasonic dispersion for 5-15 min, wherein the cleaning and drying comprise: and washing the mixture for multiple times by using deionized water, and drying the mixture for 15 to 20 hours at the temperature of between 50 and 70 ℃.
As a further scheme of the invention: the step 7 of washing and drying comprises the following steps: washing with deionized water for many times, and drying at 60-80 ℃ for 13-22 h.
As a further scheme of the invention: the agent removing treatment in the step 6 comprises the following steps: acetone is used as a solvent, the pitch-based carbon fiber is condensed and refluxed for 24-48 h at 70-80 ℃ by adopting a Soxhlet extraction method, and then dried for 6-12 h at 60-80 ℃.
As a further scheme of the invention: in the step 6, the mass concentration of the concentrated nitric acid is 65%, and the cleaning and drying comprises the following steps: washing the substrate with absolute ethyl alcohol and deionized water for multiple times, and drying the substrate for 2-4 hours at the temperature of 60-80 ℃.
As a further scheme of the invention: the pre-oxidation treatment in the step 4 comprises a first-stage temperature change treatment, a second-stage temperature change treatment and a third-stage temperature change treatment which are sequentially performed;
the temperature rise rate of the first-stage variable temperature treatment is 0.3-1 ℃/min, the target temperature of the first-stage variable temperature treatment is 10-16 ℃ lower than the glass transition temperature of the mesophase pitch, and the heat preservation time of the first-stage variable temperature treatment is 10-120 min;
the temperature rise rate of the second-stage variable temperature treatment is 0.6-8 ℃/min, and the target temperature of the second-stage variable temperature treatment is 300-310 ℃;
the temperature rise rate of the third-stage temperature change treatment is 0.6-8 ℃/min, and the target temperature of the second-stage temperature change treatment is 350-380 ℃.
As a still further scheme of the invention: the carbonization treatment in the step 5 is low-temperature carbonization and high-temperature carbonization which are sequentially performed;
the temperature of low-temperature carbonization is 400-500 ℃, the heating rate of heating to the low-temperature carbonization temperature is 8-12 ℃/min, and the heat preservation time of low-temperature carbonization is 8-12 min;
the temperature of the high-temperature carbonization is 1100-2000 ℃, the heating rate of the high-temperature carbonization temperature is 8-12 ℃/min, and the heat preservation time of the high-temperature carbonization is 7-15 min;
the temperature of the graphitization treatment is 2300-3000 ℃, the heating rate of heating to the graphitization treatment temperature is 15-25 ℃/min, and the heat preservation time of the graphitization treatment is 8-12 min;
an asphalt-based carbon fiber composite material obtained by the above-mentioned production method, characterized in that the composite material diameter (μm): 12-16, tensile strength (MPa): 350-900; young's modulus (GPa): 30-60 parts of; density (g/mL): 1.5 to 1.7; carbon content (wt%): is more than 95 percent.
Compared with the prior art, the invention has the beneficial effects that: the invention effectively improves the performance of the carbon fiber on the basis, and uses nitric acid, saturated solution of lithium aluminum hydride/tetrahydrofuran and silane coupling agent solution to carry out carboxylation and hydroxylation treatment in sequence so as to form a modified coating of a toughened polymer system on the surface of the pitch-based carbon fiber, thereby greatly improving the performance of the pitch-based carbon fiber composite material.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the invention, the preparation method of the asphalt-based carbon fiber composite material comprises the following steps:
step 1: melting an asphalt base to obtain a base raw material, wherein the mass ratio of the raw material is 5:4: 1;
step 2: carrying out melt spinning on the basic raw material in the step 1 to obtain filamentous asphalt;
and step 3: sequentially bundling, bundling and drying the filamentous asphalt and the composite oil agent to obtain asphalt protofilaments;
and 4, step 4: pre-oxidizing the asphalt protofilament to obtain asphalt fibers;
and 5: carbonizing and graphitizing the pitch fiber obtained in the step 4 to obtain carbon fiber;
step 6: removing the agent from the asphalt fibers obtained in the step 5, then placing the asphalt fibers in concentrated nitric acid, taking out the asphalt fibers after condensing and refluxing for 10 hours at 70 ℃, then placing the asphalt fibers in a saturated solution of lithium aluminum hydride/tetrahydrofuran, taking out the asphalt fibers after condensing and refluxing for 56 hours at 50 ℃, and cleaning and drying the asphalt fibers;
and 7: modification of rigid macromolecules: and (2) dropwise adding hydrochloric acid into 150ml of tris buffer until the pH value of the solution is 8.8, placing 0.45g of aminated asphalt-based carbon fiber into the solution for dispersion, adding 0.15g of dopamine into the solution, standing at room temperature for reaction for 15 hours, taking out the asphalt-based carbon fiber, cleaning and drying to obtain the asphalt-based carbon fiber.
And (3) adding polyetheramine into the dimethylformamide solution in the step (7), and performing ultrasonic dispersion for 250 min.
The step 7 of washing and drying comprises the following steps: after washing with deionized water several times, drying was carried out at 70 ℃ for 152 h.
The agent removing treatment in the step 6 comprises the following steps: acetone is used as a solvent, the pitch-based carbon fiber is condensed and refluxed for 24-48 h at 70-80 ℃ by adopting a Soxhlet extraction method, and then dried for 8h at 70 ℃.
In the step 6, the mass concentration of the concentrated nitric acid is 65%, and the cleaning and drying comprises the following steps: after washing with absolute ethanol and deionized water several times, drying at 70 deg.C for 3 h.
The pre-oxidation treatment in the step 4 comprises a first-stage temperature change treatment, a second-stage temperature change treatment and a third-stage temperature change treatment which are sequentially performed;
the heating rate of the first-stage temperature-changing treatment is 1 ℃/min, the target temperature of the first-stage temperature-changing treatment is 16 ℃ lower than the glass transition temperature of the mesophase pitch, and the heat preservation time of the first-stage temperature-changing treatment is 120 min;
the heating rate of the second-stage variable temperature treatment is 8 ℃/min, and the target temperature of the second-stage variable temperature treatment is 350 ℃;
the temperature rise rate of the third-stage temperature change treatment is 8 ℃/min, and the target temperature of the second-stage temperature change treatment is 3600 ℃.
The carbonization treatment in the step 5 is low-temperature carbonization and high-temperature carbonization which are sequentially performed;
the temperature of the low-temperature carbonization is 450 ℃, the heating rate of heating to the low-temperature carbonization temperature is 10 ℃/min, and the heat preservation time of the low-temperature carbonization is 10 min;
the temperature of the high-temperature carbonization is 1500 ℃, the heating rate of the high-temperature carbonization temperature is 9 ℃/min, and the heat preservation time of the high-temperature carbonization is 10 min;
the temperature of the graphitization treatment is 2500 ℃, the heating rate of heating to the graphitization treatment temperature is 18 ℃/min, and the heat preservation time of the graphitization treatment is 10 min;
the carbon fiber material obtained by the processing method has the following properties:
item Index (I)
Diameter (μm) 12~16
Tensile strength (MPa) 350~900
Young's modulus (GPa) 30~60
Resistivity ([ 10 ] -3 Ω cm) 5~8
Density (g/mL) 1.5~1.7
Carbon content (wt%) >95
The main quality indexes of the spinning in the step 2 are as follows:
item All indexes of general versatility All indexes of general versatility
Softening Point (. degree. C.) 260~280 280~320
Coking value (%) 78~82 80~95
Quinoline insoluble (%) 0.1~2.5 5~36
Ash (%) <0.5 <0.2
Density of 1.2~1.3g/ml 1.2~1.3g/ml
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The preparation method of the asphalt-based carbon fiber composite material is characterized by comprising the following steps of:
step 1: melting the asphalt base to obtain a base raw material;
step 2: carrying out melt spinning on the basic raw material in the step 1 to obtain filamentous asphalt;
and step 3: sequentially bundling, bundling and drying the filamentous asphalt and the composite oil agent to obtain asphalt protofilaments;
and 4, step 4: pre-oxidizing the asphalt protofilament to obtain asphalt fibers;
and 5: carbonizing and graphitizing the pitch fiber obtained in the step 4 to obtain carbon fiber;
step 6: removing the agent from the asphalt fiber obtained in the step 5, then placing the asphalt fiber in concentrated nitric acid, taking out the asphalt fiber after condensing and refluxing for 7-15 h at the temperature of 60-80 ℃, then placing the asphalt fiber in a saturated solution of lithium aluminum hydride/tetrahydrofuran, condensing and refluxing for 4-6 h at the temperature of 40-60 ℃, taking out the asphalt fiber, and cleaning and drying the asphalt fiber;
and 7: modification of rigid macromolecules: and (2) dropwise adding hydrochloric acid into 120-220 ml of tris buffer until the pH value of the solution is 8.8, placing 0.3-0.5 g of aminated asphalt-based carbon fiber in the solution for dispersion, adding 0.1-0.2 g of dopamine into the solution, standing at room temperature for reaction for 12-24 h, taking out the asphalt-based carbon fiber, cleaning and drying to obtain the asphalt-based carbon fiber.
2. The preparation method of the pitch-based carbon fiber composite material according to claim 1, wherein the pitch-based carbon fiber subjected to amination in the step 7 is placed in a solution and ultrasonically dispersed for 5-15 min, and the cleaning and drying steps include: and washing the mixture for multiple times by using deionized water, and drying the mixture for 15 to 20 hours at the temperature of between 50 and 70 ℃.
3. The method for preparing an asphalt-based carbon fiber composite material according to claim 1, wherein the washing and drying in step 7 comprises: washing with deionized water for many times, and drying at 60-80 ℃ for 13-22 h.
4. The method for producing an asphalt-based carbon fiber composite material according to claim 1, wherein the step 6 degating treatment comprises: acetone is used as a solvent, the pitch-based carbon fiber is condensed and refluxed for 24-48 h at 70-80 ℃ by adopting a Soxhlet extraction method, and then dried for 6-12 h at 60-80 ℃.
5. The method for preparing the pitch-based carbon fiber composite material according to claim 1, wherein the concentrated nitric acid in the step 6 has a mass concentration of 65%, and the cleaning and drying includes: washing the substrate with absolute ethyl alcohol and deionized water for multiple times, and drying the substrate for 2-4 hours at the temperature of 60-80 ℃.
6. The method for preparing an asphalt-based carbon fiber composite material according to claim 1, wherein the pre-oxidation treatment in step 4 comprises a first-stage temperature-changing treatment, a second-stage temperature-changing treatment and a third-stage temperature-changing treatment which are sequentially performed;
the temperature rise rate of the first-stage variable temperature treatment is 0.3-1 ℃/min, the target temperature of the first-stage variable temperature treatment is 10-16 ℃ lower than the glass transition temperature of the mesophase pitch, and the heat preservation time of the first-stage variable temperature treatment is 10-120 min;
the temperature rise rate of the second-stage variable temperature treatment is 0.6-8 ℃/min, and the target temperature of the second-stage variable temperature treatment is 300-310 ℃;
the temperature rise rate of the third-stage temperature change treatment is 0.6-8 ℃/min, and the target temperature of the second-stage temperature change treatment is 350-380 ℃.
7. The method for producing an asphalt-based carbon fiber composite material according to claim 1, wherein the carbonization treatment in step 5 is low-temperature carbonization and high-temperature carbonization performed in this order;
the temperature of low-temperature carbonization is 400-500 ℃, the heating rate of heating to the low-temperature carbonization temperature is 8-12 ℃/min, and the heat preservation time of low-temperature carbonization is 8-12 min;
the temperature of the high-temperature carbonization is 1100-2000 ℃, the heating rate of the high-temperature carbonization temperature is 8-12 ℃/min, and the heat preservation time of the high-temperature carbonization is 7-15 min;
the temperature of the graphitization treatment is 2300-3000 ℃, the heating rate of heating to the graphitization treatment temperature is 15-25 ℃/min, and the heat preservation time of the graphitization treatment is 8-12 min.
8. A pitch-based carbon fiber composite material obtained by the production method according to any one of claims 1 to 7, wherein the ratio of the composite material diameter (μm): 12-16, tensile strength (MPa): 350-900; young's modulus (GPa): 30-60 parts of; density (g/mL): 1.5 to 1.7; carbon content (wt%): is more than 95 percent.
CN202011610070.0A 2020-12-30 2020-12-30 Asphalt-based carbon fiber composite material and preparation method thereof Pending CN112921658A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6452824A (en) * 1987-05-26 1989-02-28 Petoca Ltd Melt spinning device for pitch
CN102296460A (en) * 2010-06-25 2011-12-28 中国石油化工股份有限公司 Method for enhancing carbon fiber
CN105113260A (en) * 2015-08-19 2015-12-02 上海交通大学 Method for performing amino functionalizing on carbon fiber surface
CN107904698A (en) * 2017-11-07 2018-04-13 东华大学 A kind of preparation method of asphalt base carbon fiber
WO2018079763A1 (en) * 2016-10-28 2018-05-03 三菱ケミカル株式会社 Sizing agent for carbon fibers, aqueous dispersion of sizing agent for carbon fibers, and carbon fiber bundle to which sizing agent adheres
CN110130102A (en) * 2019-05-09 2019-08-16 常州大学 A kind of surface modification method of carbon nanofiber
CN111962294A (en) * 2020-09-03 2020-11-20 湖南东映碳材料科技有限公司 High-thermal-conductivity composite material and preparation method thereof
CN111979757A (en) * 2020-09-09 2020-11-24 陕西科技大学 A method for surface modification of pitch-based carbon fiber by using a rigid-flexible polymer system
CN112064340A (en) * 2020-09-14 2020-12-11 湖南东映碳材料科技有限公司 Quasi-isotropic high-thermal-conductivity composite material and preparation method thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6452824A (en) * 1987-05-26 1989-02-28 Petoca Ltd Melt spinning device for pitch
CN102296460A (en) * 2010-06-25 2011-12-28 中国石油化工股份有限公司 Method for enhancing carbon fiber
CN105113260A (en) * 2015-08-19 2015-12-02 上海交通大学 Method for performing amino functionalizing on carbon fiber surface
WO2018079763A1 (en) * 2016-10-28 2018-05-03 三菱ケミカル株式会社 Sizing agent for carbon fibers, aqueous dispersion of sizing agent for carbon fibers, and carbon fiber bundle to which sizing agent adheres
CN107904698A (en) * 2017-11-07 2018-04-13 东华大学 A kind of preparation method of asphalt base carbon fiber
CN110130102A (en) * 2019-05-09 2019-08-16 常州大学 A kind of surface modification method of carbon nanofiber
CN111962294A (en) * 2020-09-03 2020-11-20 湖南东映碳材料科技有限公司 High-thermal-conductivity composite material and preparation method thereof
CN111979757A (en) * 2020-09-09 2020-11-24 陕西科技大学 A method for surface modification of pitch-based carbon fiber by using a rigid-flexible polymer system
CN112064340A (en) * 2020-09-14 2020-12-11 湖南东映碳材料科技有限公司 Quasi-isotropic high-thermal-conductivity composite material and preparation method thereof

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