CN106521713A - Preparation method of graphene/mesophase pitch based composite carbon fiber - Google Patents

Preparation method of graphene/mesophase pitch based composite carbon fiber Download PDF

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Publication number
CN106521713A
CN106521713A CN201610990334.7A CN201610990334A CN106521713A CN 106521713 A CN106521713 A CN 106521713A CN 201610990334 A CN201610990334 A CN 201610990334A CN 106521713 A CN106521713 A CN 106521713A
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graphene
carbon fiber
mesophase pitch
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preparation
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过冬
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    • 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
    • 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

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

Abstract

The invention discloses a preparation method of graphene/mesophase pitch based composite carbon fiber. Compared with pure mesophase pitch, the graphene/mesophase pitch based composite carbon fiber prepared with the method has unchanged initial heat weight loss temperature, basically identical rheological properties, improved tensile strength and yield strength and basically unchanged conduction performance and modulus.

Description

A kind of preparation method of the compound carbon fiber of Graphene/intermediate phase pitch-based
Technical field
A kind of the present invention relates to fibre manufacturing technology field, more particularly to the compound carbon fiber of Graphene/intermediate phase pitch-based Preparation method.
Background technology
With the development that science and technology is maked rapid progress, carbon fiber is not only merely used as the reinforcement in composite, goes back quilt It is widely used in consumer electronic device, skyscraper, integrated circuit, rapid, information engineering, ocean engineering, new energy The fields such as source, life sciences and national defense construction.Carbon fibe also has good biocompatibility, and people can also as needed to charcoal The surface functional group of fiber, chemical property, mechanical property and it is adjusted using form so as to be applied to chemical industry, food, biology The fields such as pharmacy, biological wastewater treatment and fixation of microbe cell, Carbon fiber and carbon fiber composites are the masters of this century new material One of body.
The presoma for preparing carbon fiber is a lot, can be Colophonium, polyacrylonitrile, polyethylene etc., but up to the present, can be with Realize only Colophonium, polyimides and the viscose rayon of industrialized production.
Mesophase Pitch-based Carbon Fibers (Mesophase pitch-based carbon fiber, MPCF) are low close because of which It is many that the excellent properties such as degree, high-moduluss, high heat conductance are widely used in aerospace, automobile, military project, electronic device, biology, the energy etc. Individual field.But compared with PAN based carbon fibers, the tension and comprcssive strength of Mesophase Pitch-based Carbon Fibers is relatively low, not only makes which Preparation process becomes difficult, has also had a strong impact on its wider application.So improving Mesophase Pitch-based Carbon Fibers power The method very Worth Expecting of its conductive performance and modulus is not interfered with while learning performance again.
Focus of the Graphene as Recent study, the thermal conductivity for having fabulous intensity, single-layer graphene are close to theoretical value, But be also difficult to be used alone at present, used as filler in most cases.
The content of the invention
It is an object of the invention to a kind of preparation method of the compound carbon fiber of Graphene/intermediate phase pitch-based is proposed, to carry The mechanical property of high mesophase pitch-based carbon fibers, while do not affect its conductive performance and modulus.
It is that, up to this purpose, the present invention is employed the following technical solutions:
A kind of preparation method of the compound carbon fiber of Graphene/intermediate phase pitch-based, including:
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for The sodium nitrate of graphite powder 50-80wt%, and to account for and react 30-120min under the potassium permanganate of 2-4 times of weight of graphite powder, ice bath;
(2) 30-40 DEG C of constant temperature 4-5h is heated to, deionized water and hydrogen peroxide is added, 1-3h is stirred, 5% concentration is added HCl centrifuge washings are until sulfate radical-free ion, obtains graphene oxide;
(3) graphene oxide is put in the hydrazine hydrate solution of 5-10wt% concentration and is reduced, reduction temperature is 75-90 DEG C, recovery time 0.5-2h obtains Graphene;
(4) mesophase pitch is compared into 100 with the Graphene according to weight:(0.05-1) mix, add ethanol, ultrasound is simultaneously Stir;
(5) mixture for stirring is heated to into 300-330 DEG C and is incubated 10-60min, then carry out melt spinning, Obtain composite fibre;
(6) under noble gases or nitrogen protection, composite fibre is raised to into 700 DEG C with the heating rate of 2-4 DEG C/s, subsequently 1000-2000 DEG C is warmed up to 5-6 DEG C of programming rate, room temperature is cooled to, the Graphene/intermediate phase pitch-based is obtained and is combined Carbon fiber.
The compound carbon fiber of Graphene/intermediate phase pitch-based that method of the present invention is prepared, which is compared to pure Mesophase pitch, initial thermal weight loss temperature are not changed in, and rheological property is basically identical, and its tensile strength and yield strength are carried Height, its conductive performance and modulus do not change substantially.
Specific embodiment
Technical scheme is further illustrated below by specific embodiment.
Embodiment 1
A kind of preparation method of the compound carbon fiber of Graphene/intermediate phase pitch-based, including:
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for The sodium nitrate of graphite powder 50wt%, and to account for and react 30min under the potassium permanganate of 2 times of weight of graphite powder, ice bath;
(2) 30 DEG C of constant temperature 4h are heated to, deionized water and hydrogen peroxide is added, 1h is stirred, the HCl centrifugations of 5% concentration are added Washing is until sulfate radical-free ion, obtains graphene oxide;
(3) graphene oxide is put in the hydrazine hydrate solution of 10wt% concentration and is reduced, reduction temperature is 75 DEG C, also Former time 0.5h, obtains Graphene;
(4) mesophase pitch is compared into 100 with the Graphene according to weight:0.05 mixing, adds ethanol, ultrasound simultaneously to stir Uniformly;
(5) mixture for stirring is heated to into 300 DEG C and is incubated 10min, then carried out melt spinning, be combined Fiber;
(6) noble gases or nitrogen protection under, composite fibre is raised to into 700 DEG C with the heating rate of 2 DEG C/s, subsequently with 5 DEG C of programming rate is warmed up to 1000 DEG C, is cooled to room temperature, obtains the compound carbon fiber of the Graphene/intermediate phase pitch-based.
Embodiment 2
A kind of preparation method of the compound carbon fiber of Graphene/intermediate phase pitch-based, including:
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for The sodium nitrate of graphite powder 80wt%, and to account for and react 120min under the potassium permanganate of 4 times of weight of graphite powder, ice bath;
(2) 40 DEG C of constant temperature 5h are heated to, deionized water and hydrogen peroxide is added, 3h is stirred, the HCl centrifugations of 5% concentration are added Washing is until sulfate radical-free ion, obtains graphene oxide;
(3) graphene oxide is put in the hydrazine hydrate solution of 10wt% concentration and is reduced, reduction temperature is 90 DEG C, also Former time 2h, obtains Graphene;
(4) mesophase pitch is compared into 100 with the Graphene according to weight:1 mixing, adds ethanol, ultrasound simultaneously to stir equal It is even;
(5) mixture for stirring is heated to into 330 DEG C and is incubated 60min, then carried out melt spinning, be combined Fiber;
(6) noble gases or nitrogen protection under, composite fibre is raised to into 700 DEG C with the heating rate of 4 DEG C/s, subsequently with 6 DEG C of programming rate is warmed up to 2000 DEG C, is cooled to room temperature, obtains the compound carbon fiber of the Graphene/intermediate phase pitch-based.
Embodiment 3
A kind of preparation method of the compound carbon fiber of Graphene/intermediate phase pitch-based, including:
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for The sodium nitrate of graphite powder 60wt%, and to account for and react 60min under the potassium permanganate of 3 times of weight of graphite powder, ice bath;
(2) 35 DEG C of constant temperature 4h are heated to, deionized water and hydrogen peroxide is added, 2h is stirred, the HCl centrifugations of 5% concentration are added Washing is until sulfate radical-free ion, obtains graphene oxide;
(3) graphene oxide is put in the hydrazine hydrate solution of 10wt% concentration and is reduced, reduction temperature is 80 DEG C, also Former time 1h, obtains Graphene;
(4) mesophase pitch is compared into 100 with the Graphene according to weight:0.1 mixing, adds ethanol, ultrasound simultaneously to stir Uniformly;
(5) mixture for stirring is heated to into 320 DEG C and is incubated 30min, then carried out melt spinning, be combined Fiber;
(6) noble gases or nitrogen protection under, composite fibre is raised to into 700 DEG C with the heating rate of 3 DEG C/s, subsequently with 5 DEG C of programming rate is warmed up to 1500 DEG C, is cooled to room temperature, obtains the compound carbon fiber of the Graphene/intermediate phase pitch-based.
The compound carbon fiber of Graphene/intermediate phase pitch-based that method described in embodiment 1-3 is prepared, which is compared to pure Mesophase pitch, initial thermal weight loss temperature is not changed in, and rheological property is basically identical, and its tensile strength and yield strength have Improve, its conductive performance and modulus do not change substantially.

Claims (1)

1. a kind of Graphene/intermediate phase pitch-based is combined the preparation method of carbon fiber, including:
(1), under condition of ice bath, under mechanical agitation, crystalline graphite powder is added in 98% concentrated sulphuric acid, add and account for graphite The sodium nitrate of powder 50-80wt%, and to account for and react 30-120min under the potassium permanganate of 2-4 times of weight of graphite powder, ice bath;
(2) be heated to 30-40 DEG C of constant temperature 4-5h, add deionized water and hydrogen peroxide, stir 1-3h, add the HCl of 5% concentration from Heart washing is until sulfate radical-free ion, obtains graphene oxide;
(3) graphene oxide is put in the hydrazine hydrate solution of 5-10wt% concentration and is reduced, reduction temperature is 75-90 DEG C, Recovery time 0.5-2h, obtains Graphene;
(4) mesophase pitch is compared into 100 with the Graphene according to weight:(0.05-1) mix, add ethanol, ultrasound simultaneously to stir Uniformly;
(5) mixture for stirring is heated to into 300-330 DEG C and is incubated 10-60min, then carried out melt spinning, obtain Composite fibre;
(6) under noble gases or nitrogen protection, composite fibre is raised to into 700 DEG C with the heating rate of 2-4 DEG C/s, subsequently with 5- 6 DEG C of programming rate is warmed up to 1000-2000 DEG C, is cooled to room temperature, obtains the Graphene/intermediate phase pitch-based composite carbon fine Dimension.
CN201610990334.7A 2016-11-10 2016-11-10 Preparation method of graphene/mesophase pitch based composite carbon fiber Pending CN106521713A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624993A (en) * 2018-05-10 2018-10-09 湖南大学 A kind of preparation method without splitting structure high heat conduction mesophase pitch-based carbon fibers
CN108794037A (en) * 2018-06-21 2018-11-13 西安理工大学 A kind of preparation method of Carbon foam heat-insulation composite material
CN110629326A (en) * 2019-10-29 2019-12-31 北京化工大学 Preparation method of high-thermal-conductivity mesophase pitch-based carbon fiber
CN112941668A (en) * 2021-03-15 2021-06-11 湖南大学 Preparation method of mesophase pitch-based graphite fiber with stable structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103276477A (en) * 2013-06-09 2013-09-04 东莞市比比克电子科技有限公司 Preparation technology of intermediate phase pitch-based carbon fiber
CN103320901A (en) * 2013-06-01 2013-09-25 青岛中科昊泰新材料科技有限公司 Mesophase pitch-based carbon fiber doped with graphene
CN104213253A (en) * 2014-09-15 2014-12-17 北京化工大学常州先进材料研究院 Preparation method of novel mesophase pitch-based composite carbon fibers
CN105256409A (en) * 2015-11-17 2016-01-20 安徽弘昌新材料有限公司 Mesophase-pitch-based carbon fiber and preparation method thereof

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CN103320901A (en) * 2013-06-01 2013-09-25 青岛中科昊泰新材料科技有限公司 Mesophase pitch-based carbon fiber doped with graphene
CN103276477A (en) * 2013-06-09 2013-09-04 东莞市比比克电子科技有限公司 Preparation technology of intermediate phase pitch-based carbon fiber
CN104213253A (en) * 2014-09-15 2014-12-17 北京化工大学常州先进材料研究院 Preparation method of novel mesophase pitch-based composite carbon fibers
CN105256409A (en) * 2015-11-17 2016-01-20 安徽弘昌新材料有限公司 Mesophase-pitch-based carbon fiber and preparation method thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108624993A (en) * 2018-05-10 2018-10-09 湖南大学 A kind of preparation method without splitting structure high heat conduction mesophase pitch-based carbon fibers
CN108794037A (en) * 2018-06-21 2018-11-13 西安理工大学 A kind of preparation method of Carbon foam heat-insulation composite material
CN110629326A (en) * 2019-10-29 2019-12-31 北京化工大学 Preparation method of high-thermal-conductivity mesophase pitch-based carbon fiber
CN110629326B (en) * 2019-10-29 2020-10-27 北京化工大学 Preparation method of high-thermal-conductivity mesophase pitch-based carbon fiber
CN112941668A (en) * 2021-03-15 2021-06-11 湖南大学 Preparation method of mesophase pitch-based graphite fiber with stable structure

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