CN104651977A - Method for producing graphitization carbon fibers and special device for method - Google Patents
Method for producing graphitization carbon fibers and special device for method Download PDFInfo
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- CN104651977A CN104651977A CN201310602778.5A CN201310602778A CN104651977A CN 104651977 A CN104651977 A CN 104651977A CN 201310602778 A CN201310602778 A CN 201310602778A CN 104651977 A CN104651977 A CN 104651977A
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Abstract
The invention discloses a method for producing graphitization carbon fibers and a special device for the method. The method comprises the following steps that firstly cooling water and working medium argon are introduced into a plasma generator; the plasma generator generates high temperature of 2500 DEG C-3500 DEG C in the local region when the pressure P equals to 0.3-0.5MPa, and the current is 80-100A, and the carbon fibers pass through the plasma high-temperature region with the retention time of 10-20 seconds, thereby obtaining the graphitization carbon fibers. The method for producing graphitization carbon fibers and the special device for the method have the advantages that the technology is simple, the product cost is low, the energy consumption is low, thermal plasma can achieve instant high-temperature and rapid quenching, the comprehensive performances of materials are ensured, and the whole technological process is smooth and stable.
Description
Technical field
The invention belongs to a kind of method of producing graphitized carbon fibre, relate in particular to a kind of feature utilizing hot plasma high temperature, high reaction activity, the method for graphitized carbon fibre and special purpose device thereof under oxygen-free environment.
Background technology
Carbon fiber one emerges, namely with high-strength, high-modulus, the resistance to ablation of its uniqueness, can weave, the excellent properties such as can to conduct electricity enjoys favor, to become in the material world a brilliant nova.High-modulus carbon (graphite) fiber is an important kind in carbon fiber family, is the most important reinforcing material of advanced composite material, has purposes widely in China's construction and the development of the national economy.Carbon fiber is at 2000-3000 DEG C and heat under applying traction condition, and graphite microcrystal axial orientation degree in fiber is increased, and size increases, and degree of perfection increases, and namely obtains height and touches graphite fibre.Graphite fibre is the key thus developing graphite fibre prepared through graphitization processing on the basis of carbon fiber is high-temperature technology and high-temperature service, i.e. graphitizing furnace.Graphitization technique general in the world all adopts tubular graphene stove at present.This method for graphitizing not only equipment manufacturing cost is expensive, and energy consumption is large, and the thermal efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of technique is simple, product cost is low, energy consumption the is low method preparing high performance graphite fiber and special purpose device.
The method that the present invention prepares high performance graphite fiber comprises the steps:
One, first cooling water and working media argon gas are passed into plasma generator;
Two, in pressure P=0.3-0.5MPa time, when electric current is 80-100A, plasma generator produces the high temperature of 2500 DEG C ~ 3500 DEG C of regional areas, it is room temperature beyond this region, by carbon fiber by plasma high-temperature district, by time the time of staying be 10-20 seconds, thus obtain graphitized carbon fibre.
In order to realize foregoing invention, devise plasma generator special purpose device, it is connected by insulating flange by between negative electrode and anode; Cooling water pipe is connected with anode, and with Flange joint between anode and reacting furnace, argon gas wireway is connected with negative electrode.
The present invention compared with prior art tool has the following advantages: technique is simple, product cost is low, it is low to consume energy, hot plasma can realize instantaneous high-temperature and rapid quench, ensure the combination property of material, not only whole technical process is smooth and easy stable, and can change the degree of graphitization of process parameter control gained carbon fiber.
Accompanying drawing explanation
Accompanying drawing is the longitudinal profile structure chart of plasma generator of the present invention.
Detailed description of the invention
Embodiment 1:
As shown in the figure, connected by insulating flange 7 between negative electrode 4 and anode 3; Cooling water pipe entrance 2 connects with anode 3 with welding manner, and connect with flange 8 between anode 3 and reacting furnace 1, argon gas wireway 5 is connected with negative electrode 4.Cooling water is passed into from cooling water pipe entrance 2, passes into argon gas by argon gas wireway 5, and make pressure apply the direct current of 80A to negative electrode 4 and anode 3 the two poles of the earth at 0.3MPa simultaneously, make gas continuous discharge, form electric arc.From reacting furnace 1 by carbon fiber, controlling the time of staying of carbon fiber in stove is 20 seconds.Reaction terminates its tensile modulus of rear test, and the results are shown in Table 1 for it.
Embodiment 2:
Adjustment electric current is 90A, and reaction furnace pressure is 0.4MPa.Controlling the time of staying of carbon fiber in stove is 15 seconds.Other is all undertaken by embodiment 1 same method and condition, and reaction terminates its tensile modulus of rear test, and the results are shown in Table 1 for these.
Embodiment 3:
Adjustment electric current is 100A, and reaction furnace pressure is 0.5MPa.Controlling the time of staying of carbon fiber in stove is 10 seconds.Other is all undertaken by embodiment 1 same method and condition, and reaction terminates its tensile modulus of rear test, and the results are shown in Table 1 for these.
Table 1
As can be seen from the above table: adopt above-mentioned embodiment, the tensile modulus producing graphite fibre reaches
m40J(377GPa) level.
Claims (2)
1. produce a method for graphitized carbon fibre, it is characterized in that comprising the steps:
(1), first cooling water and working media argon gas are passed into plasma generator;
(2), in pressure P=0.3-0.5MPa time, when electric current is 80-100A, plasma generator produces the high temperature of 2500 DEG C ~ 3500 DEG C of regional areas, it is room temperature beyond this region, by carbon fiber by plasma high-temperature district, by time the time of staying be 10-20 seconds, thus obtain graphitized carbon fibre.
2. a kind of device producing graphitized carbon fibre according to claim 1, is characterized in that it is connected by insulating flange (7) by between negative electrode (4) and anode (3); Cooling water pipe (2) is connected with anode (3), and connect with flange (8) between anode (3) and reacting furnace (1), argon gas wireway (5) is connected with negative electrode (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602778.5A CN104651977A (en) | 2013-11-25 | 2013-11-25 | Method for producing graphitization carbon fibers and special device for method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602778.5A CN104651977A (en) | 2013-11-25 | 2013-11-25 | Method for producing graphitization carbon fibers and special device for method |
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| Publication Number | Publication Date |
|---|---|
| CN104651977A true CN104651977A (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310602778.5A Pending CN104651977A (en) | 2013-11-25 | 2013-11-25 | Method for producing graphitization carbon fibers and special device for method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421020A (en) * | 2015-12-04 | 2016-03-23 | 镇江奥立特机械制造有限公司 | Surface treatment process for carbon fibers |
| CN105696113A (en) * | 2015-12-04 | 2016-06-22 | 江西大有科技有限公司 | Device for manufacturing carbon fibers through nonequilibrium plasma and method of device |
| CN108149483A (en) * | 2016-12-02 | 2018-06-12 | 永虹先进材料股份有限公司 | Carbon fibre manufacturing method |
| CN111962287A (en) * | 2020-07-29 | 2020-11-20 | 孙世超 | Process for preparing high-performance low-cost graphitized carbon fiber by using joule heating technology |
-
2013
- 2013-11-25 CN CN201310602778.5A patent/CN104651977A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421020A (en) * | 2015-12-04 | 2016-03-23 | 镇江奥立特机械制造有限公司 | Surface treatment process for carbon fibers |
| CN105696113A (en) * | 2015-12-04 | 2016-06-22 | 江西大有科技有限公司 | Device for manufacturing carbon fibers through nonequilibrium plasma and method of device |
| CN105696113B (en) * | 2015-12-04 | 2018-06-26 | 江西大有科技有限公司 | A kind of devices and methods therefor using nonequilibrium plasma manufacture carbon fiber |
| CN108149483A (en) * | 2016-12-02 | 2018-06-12 | 永虹先进材料股份有限公司 | Carbon fibre manufacturing method |
| CN111962287A (en) * | 2020-07-29 | 2020-11-20 | 孙世超 | Process for preparing high-performance low-cost graphitized carbon fiber by using joule heating technology |
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Application publication date: 20150527 |