CN115103500A - Microwave resonant cavity generator and carbon fiber preparation process thereof - Google Patents
Microwave resonant cavity generator and carbon fiber preparation process thereof Download PDFInfo
- Publication number
- CN115103500A CN115103500A CN202210746326.3A CN202210746326A CN115103500A CN 115103500 A CN115103500 A CN 115103500A CN 202210746326 A CN202210746326 A CN 202210746326A CN 115103500 A CN115103500 A CN 115103500A
- Authority
- CN
- China
- Prior art keywords
- reaction tube
- resonant cavity
- carbon fiber
- microwave
- composite material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
- H05H1/461—Microwave discharges
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/003—Treatment with radio-waves or microwaves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/02—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma
- H05H1/16—Arrangements for confining plasma by electric or magnetic fields; Arrangements for heating plasma using externally-applied electric and magnetic fields
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Textile Engineering (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Inorganic Fibers (AREA)
Abstract
The invention discloses a microwave resonant cavity generator and a carbon fiber preparation process thereof, which comprises a resonant cavity and a reaction tube penetrating through the resonant cavity, wherein a carbon fiber composite material and argon capable of forming discharge plasma are introduced into the reaction tube, the resonant cavity is provided with a microwave generating mechanism for ionizing the argon to form the discharge plasma, the microwave generating mechanism can raise the temperature of the discharge plasma to the temperature required by graphitization of the carbon fiber composite material, only an electric field is formed in the reaction tube through the microwave generating mechanism, the argon is ionized to form the discharge plasma, after the temperature of the discharge plasma is raised to the temperature required by graphitization of the carbon fiber composite material, the carbon fiber composite material can be graphitized by introducing the carbon fiber composite material for ten seconds, the process is simple, the product cost is low, the realization is easy, and a graphitization furnace in the prior art is not needed again, avoids the influence on the environment caused by time and labor waste in the preparation process.
Description
Technical Field
The invention relates to the field of preparation of carbon fiber composite powder, in particular to a microwave resonant cavity generator and a carbon fiber preparation process thereof.
Background
The carbon fiber has excellent performances of high strength, capability of weaving and conducting, extremely light weight and the like, and becomes an attractive new star in the new material world; the high modulus carbon fiber belongs to composite materials and advanced reinforced materials. Under the condition of high temperature, the degree of axial orientation of graphite microcrystals in the carbon fiber is increased, the size is increased, and the perfection is enlarged, so that the high-strength graphite carbon fiber is obtained. At present, the internationally universal graphitizing carbon fiber process adopts a graphitizing furnace comprising high-frequency graphitization and resistance graphitization, and the equipment has high manufacturing cost and low efficiency utilization rate, and can not meet the requirements of small low-cost and mass production of carbon fibers.
Disclosure of Invention
The invention aims to provide a microwave resonant cavity generator and a carbon fiber preparation process thereof, which are used for solving the problems in the prior art and have the advantages of simple process, low product manufacturing cost and high energy utilization rate.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a microwave resonant cavity generator which comprises a resonant cavity body and a reaction tube penetrating through the resonant cavity body, wherein a carbon fiber composite material and argon capable of forming discharge plasma are introduced into the reaction tube, the carbon fiber composite material is in a bundling linear structure and penetrates along the axis of the reaction tube, a microwave generating mechanism for ionizing the argon to form the discharge plasma is arranged on the resonant cavity body, and the microwave generating mechanism can raise the temperature of the discharge plasma to the temperature required by graphitization of the carbon fiber composite material.
Preferably, the resonant cavity is provided with a tuning screw for adjusting the electric field intensity distribution and the microwave reflection coefficient, and the tuning screw extends into the inner side of the resonant cavity and is movably arranged on the side wall of the resonant cavity in a penetrating manner.
Preferably, the microwave generating mechanism emits microwaves in the axial direction of the reaction tube, and the tuning screw is located on one side of the resonant cavity in the emission direction of the microwaves.
Preferably, the microwave generating mechanism is located at an end position of the reaction tube along the axial direction of the reaction tube, and the electric field intensity of the region where the reaction tube is located is highest.
Preferably, the microwave generating mechanism is an N-type coaxial line feed structure, the N-type coaxial line feed structure adopts 915MHz microwave source output power, and is matched with a computer control mechanism for adjusting the power.
Preferably, two ends of the reaction tube extend out of the resonance cavity respectively, a cooling cavity for cooling the graphitized carbon fiber composite material is sleeved on the periphery of the discharge end of the reaction tube, and cooling water is introduced into the cooling cavity.
Preferably, the feed end of the reaction tube is communicated with an argon supply mechanism, a pressure adjusting mechanism is arranged between the feed end of the reaction tube and the argon supply mechanism, and the pressure of the argon in the reaction tube is 0.3MPa to 0.5 MPa.
Also provides a carbon fiber preparation process, which comprises the following steps:
a preparation stage: preparing a resonant cavity matched with a microwave generating mechanism and a tuning screw, penetrating a reaction tube on the resonant cavity, wherein two ends of the reaction tube respectively extend out of the resonant cavity, and the feed end of the reaction tube is communicated with an argon supply mechanism and a carbon fiber composite material supply mechanism;
introducing argon: introducing argon into the reaction tube, and replacing and discharging original gas in the reaction tube;
emitting microwaves: starting the microwave generating mechanism, transmitting microwaves into the resonant cavity, and adjusting the frequency of the microwaves to the resonant frequency point of the resonant cavity through the tuning screw;
ionizing argon gas: generating an electric field at the reaction tube through the microwave generating mechanism, forming discharge plasma by argon in the reaction tube, and raising the temperature of the discharge plasma to a temperature required for graphitizing the carbon fiber composite material;
introducing a carbon fiber composite material: feeding the carbon fiber composite material into the reaction tube, and staying for 10-20 seconds in the reaction tube so that the carbon fiber composite material is graphitized;
and (3) cooling: and closing the microwave generating mechanism, reducing the temperature of the discharge plasma, cooling the graphitized carbon fiber composite material, and conveying the graphitized carbon fiber composite material to the discharge end of the reaction tube for discharging.
Preferably, in the step of introducing argon, the pressure of argon in the reaction tube is adjusted to 0.3MPa to 0.5 MPa.
Preferably, in the step of the preparation stage, a cooling cavity for cooling the graphitized carbon fiber composite material is sleeved on the outer peripheral side of the discharge end of the reaction tube, cooling water is introduced into the cooling cavity, and in the cooling step, the graphitized carbon fiber composite material is further cooled through cooling water in the cooling cavity.
Compared with the prior art, the invention has the following technical effects:
firstly, the reactor comprises a resonant cavity and a reaction tube arranged in the resonant cavity in a penetrating manner, wherein carbon fiber composite materials and argon capable of forming discharge plasma are introduced into the reaction tube, the carbon fiber composite materials are in a bundling linear structure and penetrate along the axis of the reaction tube, a microwave generating mechanism for ionizing the argon to form the discharge plasma is arranged on the resonant cavity, the microwave generating mechanism can raise the temperature of the discharge plasma to the temperature required by graphitization of the carbon fiber composite materials, an electric field is formed in the reaction tube only through the microwave generating mechanism, the argon is ionized to form the discharge plasma, the carbon fiber composite materials can be graphitized after the temperature of the discharge plasma is raised to the temperature required by graphitization of the carbon fiber composite materials, the microwave generating mechanism is only required to be disconnected after the graphitization work is completed, the temperature of the discharge plasma is instantly reduced, namely the carbon fiber composite material after graphitization can be cooled to discharge, the process is simple, the product cost is low, the realization is easy, a graphitization furnace in the prior art is not needed, and the influence of time and labor waste and environment production in the preparation process is avoided.
Secondly, a tuning screw for adjusting the electric field intensity distribution and the microwave reflection coefficient is arranged on the resonant cavity, the tuning screw extends into the inner side of the resonant cavity and movably penetrates through the side wall of the resonant cavity, the electric field intensity distribution and the microwave reflection coefficient can be quickly adjusted through the length of the tuning screw in the resonant cavity, and the heating effect of the discharge plasma is adjusted.
Thirdly, the microwave generating mechanism is an N-type coaxial line feed structure, the N-type coaxial line feed structure adopts 915MHz microwave source output power, and is matched with a computer control mechanism for adjusting the power of the N-type coaxial line feed structure, so that the controllability of the output power is high, a resonance point is easy to find, and the utilization rate of microwave energy is high.
Fourthly, the feed end of the reaction tube is communicated with an argon supply mechanism, an air pressure adjusting mechanism is arranged between the feed end of the reaction tube and the argon supply mechanism, the air pressure of argon in the reaction tube is 0.3MPa to 0.5MPa, namely, the air pressure of the argon in the reaction tube is reduced, the low air pressure is easy to be punctured and discharged, and plasma is formed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a diagram of the distribution of the electric field strength associated with the resonant cavity of the present invention;
the device comprises a reaction tube 1, a tuning screw 2, a 3-N type coaxial line feed structure, a carbon fiber composite material 4, a cooling cavity 5 and a resonant cavity 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
The invention aims to provide a microwave resonant cavity generator and a carbon fiber preparation process thereof, which are used for solving the problems in the prior art and have the advantages of simple process, low product manufacturing cost and high energy utilization rate.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 2, the present embodiment provides a microwave resonant cavity generator, including a resonant cavity 6 and a reaction tube 1 penetrating through the resonant cavity 6, wherein a carbon fiber composite material 4 and argon gas capable of forming a discharge plasma are introduced into the reaction tube 1, and the reaction tube 1 is evacuated by introducing the argon gas to form an oxidation-free environment, and the discharge plasma can be instantly and rapidly cooled to ensure the comprehensive performance of the material, the carbon fiber composite material 4 is in a bundled linear structure and penetrates along the axis of the reaction tube 1, so that the discharge plasma formed by the argon gas can uniformly surround the carbon fiber composite material 4, a microwave generating mechanism for ionizing the argon gas to form the discharge plasma is disposed on the resonant cavity 6, and the microwave generating mechanism can raise the temperature of the discharge plasma to a temperature required for graphitizing the carbon fiber composite material 4, only form the electric field in reaction tube 1 through microwave generation mechanism, and ionize into the plasma that discharges to argon gas, make the temperature of the plasma that discharges rise to behind the required temperature of 4 graphitizations of carbon-fibre composite, the temperature of the plasma that specifically discharges is 2500 degrees centigrade to 3500 degrees centigrade, it can be with 4 graphitization of carbon-fibre composite 4 to let in the time of 4 tens seconds of carbon-fibre composite, after accomplishing graphitization work, only need to break off microwave generation mechanism, the temperature of the plasma that discharges reduces in the twinkling of an eye, can accomplish the carbon-fibre composite 4 cooling after graphitization with the ejection of compact promptly, simple process, low in product cost and easy realization, need not to adopt the graphitization stove among the prior art again, avoid the preparation process to waste time and energy and easily to the influence that the environment produced. The carbon fiber composite material 4 is formed by converting organic fibers through a series of heat treatment, inorganic high-performance fibers with carbon content higher than 90% are novel materials with excellent mechanical properties, have inherent characteristics of carbon materials, have soft processability of textile fibers, are new-generation reinforcing fibers, gradually increase the temperature of the carbon fiber composite material 4 in discharge plasma, pre-oxidize the carbon fiber composite material 4 at 1200-350 ℃, carbonize the carbon fiber composite material 4 at 1800-1200 ℃, and graphitize the carbon fiber composite material 4 at 2500-3500 ℃.
It is preferable to introduce a catalyst for catalyzing graphitization of the carbon fiber composite material 4, for example, a conventional carbon fiber catalyst such as magnesium oxide or aluminum oxide, into the reaction tube 1. Further, a glass tube or the like is preferably used as the reaction tube 1, and argon gas may be replaced with a gas or the like which can perform the same function.
Wherein, be equipped with the tuning screw 2 that is used for adjusting electric field intensity distribution and microwave reflectance on resonant cavity 6, tuning screw 2 stretches into resonant cavity 6 inboardly to on the lateral wall of portable wearing to establish resonant cavity 6, through the length of tuning screw 2 in resonant cavity 6, and then can quick adjustment electric field intensity distribution and microwave reflectance, and adjust the heating effect of the plasma that discharges, and can adjust resonant cavity 6's resonance frequency point. The resonant cavity 6 has a simple structure, so that a resonant point is easy to find.
Further, the microwave generating mechanism emits microwaves along the axial direction of the reaction tube 1, and the tuning screw 2 is positioned on one side of the resonant cavity 6 along the emission direction of the microwaves. The tuning screw 2 is arranged on the side surface, so that the effect of disturbing the electric field intensity in the resonant cavity 6 is better.
Further, the microwave generating means is located at an end position of the reaction tube 1 in the axial direction thereof, and the electric field intensity is highest in the region where the reaction tube 1 is located. The high field strength ionizable argon, i.e. argon, is easily broken down to form a discharge plasma. The plasma disappears immediately without microwave input.
The microwave generating mechanism is an N-type coaxial line feed structure 3, the N-type coaxial line feed structure 3 adopts 915MHz microwave source output power, and is matched with a computer control mechanism for adjusting the power, so that the controllability of the output power is high, a resonance point is easy to find, and the utilization rate of microwave energy is high. The specific model of the N-type coaxial line feed structure 3 is preferably an N-type connector with 50 ohms, the N-type coaxial line feed structure 3 is a port for inputting microwaves into the cavity from a microwave source, and high-power field intensity is formed in the resonant cavity 6, so that argon in the reaction tube 1 is formed into argon plasma.
Further, resonant cavity 6 is stretched out respectively at the both ends of reaction tube 1 to can make things convenient for to form between the both ends of reaction tube 1 and the resonant cavity 6 sealedly, avoid influencing resonant cavity 6 and be located the air composition of the part of reaction tube 1 periphery side, the discharge end periphery side cover of reaction tube 1 is equipped with the cooling chamber 5 to the carbon-fibre composite 4 cooling after the graphitization, lets in the cooling chamber 5 and has had the cooling water. The feeding end of the reaction tube 1 preferably extends out of the resonant cavity 6, so that argon, a catalyst and the like can be conveniently introduced into the reaction tube 1,
wherein, the feed end of reaction tube 1 communicates with argon gas supply mechanism, and is equipped with atmospheric pressure adjustment mechanism between the argon gas supply mechanism, and the atmospheric pressure of argon gas is 0.3MPa to 0.5MPa in reaction tube 1, reduces the argon gas atmospheric pressure in reaction tube 1 promptly, and low-pressure is punctured easily and is discharged, forms plasma.
Further, a carbon fiber preparation process is also provided, which comprises the following steps:
a preparation stage: preparing a resonant cavity 6 matched with a microwave generating mechanism and a tuning screw 2, penetrating a reaction tube 1 on the resonant cavity 6, respectively extending two ends of the reaction tube 1 out of the resonant cavity 6, and communicating an argon supply mechanism and a carbon fiber composite material 4 supply mechanism at the feed end of the reaction tube 1;
introducing argon: introducing argon into the reaction tube 1, and replacing and discharging the original gas in the reaction tube 1;
emitting microwaves: starting a microwave generating mechanism, transmitting microwaves into the resonant cavity 6, and adjusting the frequency of the microwaves to the resonant frequency point of the resonant cavity 6 through the tuning screw 2; in the using process, the N-type coaxial line feed structure 3 is adopted to emit microwaves, and the tuning screw 2 is adopted to adjust and match the resonance frequency point of the resonance cavity 6;
ionizing argon gas: generating an electric field at the reaction tube 1 through a microwave generating mechanism, forming discharge plasma from argon in the reaction tube 1, and raising the temperature of the discharge plasma to a temperature required for graphitizing the carbon fiber composite material 4; argon is introduced into the reaction tube 1, microwave power is applied into the resonant cavity 6, the electric field intensity in the resonant cavity 6 is increased, and the argon is continuously discharged to form electric arcs;
and (3) introducing a carbon fiber composite material 4: feeding the carbon fiber composite material 4 into the reaction tube 1, and staying in the reaction tube 1 for 10-20 seconds to graphitize the carbon fiber composite material 4; specifically, the carbon fiber composite material 4 is continuously introduced into the reaction tube 1 to form continuous operation, and argon gas is continuously supplied into the reaction tube 1.
And (3) cooling: and closing the microwave generating mechanism, reducing the temperature of the discharge plasma, cooling the graphitized carbon fiber composite material 4, and conveying the graphitized carbon fiber composite material 4 to the discharge end of the reaction tube 1 for discharging.
In addition, in the step of introducing argon, the pressure of argon in the reaction tube 1 is adjusted to be 0.3MPa to 0.5MPa, so that the argon can be conveniently punctured.
In the step of preparing stage, the discharge end periphery side cover with reaction tube 1 is equipped with cooling chamber 5 to the cooling of carbon-fibre composite 4 after the graphitization, has let in the cooling water in cooling chamber 5, and in the cooling step, leads cold through the cooling water in cooling chamber 5, further cools down to carbon-fibre composite 4 after the graphitization, conveniently obtains graphitized carbon-fibre composite 4.
The adaptation according to the actual needs is within the scope of the invention.
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. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a microwave resonant cavity generator, its characterized in that includes resonant cavity and wears to establish reaction tube in the resonant cavity, let in the argon gas that has carbon-fibre composite and can form the plasma that discharges in the reaction tube, carbon-fibre composite is the linear structure tied in a bundle and follows the axis of reaction tube is worn to establish, be equipped with on the resonant cavity and be used for the ionization the argon gas forms the microwave generation mechanism who discharges the plasma, just microwave generation mechanism can with the temperature rise of discharging the plasma extremely the required temperature of carbon-fibre composite graphitization.
2. The microwave resonant cavity generator of claim 1, wherein the resonant cavity is provided with a tuning screw for adjusting the electric field intensity distribution and microwave reflection coefficient, the tuning screw extending into the inner side of the resonant cavity and movably disposed through the sidewall of the resonant cavity.
3. A microwave resonant cavity generator according to claim 2, wherein the microwave generating mechanism emits microwaves axially along the reactor tube, the tuning screw being located at one side of the resonant cavity in the direction of emission of the microwaves.
4. A microwave resonant cavity generator according to any one of claims 1 to 3, wherein the microwave generating means is located at an end position of the reaction tube in an axial direction thereof, and an electric field intensity is highest in a region where the reaction tube is located.
5. The microwave resonant cavity generator of claim 4, wherein the microwave generating mechanism is an N-type coaxial line feed structure, the N-type coaxial line feed structure adopts 915MHz microwave source output power, and is configured with a computer control mechanism for adjusting power.
6. The microwave resonant cavity generator according to claim 5, wherein two ends of the reaction tube respectively extend out of the resonant cavity, a cooling cavity for cooling the graphitized carbon fiber composite material is sleeved on the outer periphery of the discharge end of the reaction tube, and cooling water is introduced into the cooling cavity.
7. The microwave resonant cavity generator of claim 6, wherein the feed end of the reaction tube is connected to an argon gas supply mechanism, and a pressure adjusting mechanism is disposed between the feed end and the argon gas supply mechanism, wherein the pressure of the argon gas in the reaction tube is 0.3MPa to 0.5 MPa.
8. A process for preparing carbon fiber using the microwave resonant cavity generator as claimed in any one of claims 1 to 7, comprising the steps of:
a preparation stage: preparing a resonant cavity matched with a microwave generating mechanism and a tuning screw, penetrating a reaction tube on the resonant cavity, wherein two ends of the reaction tube respectively extend out of the resonant cavity, and the feed end of the reaction tube is communicated with an argon supply mechanism and a carbon fiber composite material supply mechanism;
introducing argon: introducing argon into the reaction tube, and replacing and discharging original gas in the reaction tube;
emitting microwaves: starting the microwave generating mechanism, emitting microwaves into the resonant cavity, and adjusting the frequency of the microwaves to the resonant frequency point of the resonant cavity through the tuning screw;
ionizing argon gas: generating an electric field at the reaction tube through the microwave generating mechanism, forming discharge plasma by argon in the reaction tube, and raising the temperature of the discharge plasma to a temperature required for graphitizing the carbon fiber composite material;
introducing a carbon fiber composite material: feeding the carbon fiber composite material into the reaction tube, and staying for 10-20 seconds in the reaction tube so that the carbon fiber composite material is graphitized;
and (3) cooling: and closing the microwave generating mechanism, reducing the temperature of the discharge plasma, cooling the graphitized carbon fiber composite material, and conveying the graphitized carbon fiber composite material to the discharge end of the reaction tube for discharging.
9. The process for producing carbon fibers according to claim 8, wherein in the step of introducing argon, the pressure of argon in the reaction tube is adjusted to 0.3 to 0.5 MPa.
10. The carbon fiber preparation process according to claim 9, wherein in the preparation step, a cooling cavity for cooling the graphitized carbon fiber composite material is sleeved on the outer periphery of the discharge end of the reaction tube, cooling water is introduced into the cooling cavity, and in the cooling step, the graphitized carbon fiber composite material is further cooled by cooling water in the cooling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210746326.3A CN115103500A (en) | 2022-06-28 | 2022-06-28 | Microwave resonant cavity generator and carbon fiber preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210746326.3A CN115103500A (en) | 2022-06-28 | 2022-06-28 | Microwave resonant cavity generator and carbon fiber preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115103500A true CN115103500A (en) | 2022-09-23 |
Family
ID=83294436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210746326.3A Pending CN115103500A (en) | 2022-06-28 | 2022-06-28 | Microwave resonant cavity generator and carbon fiber preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115103500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116419464A (en) * | 2023-06-09 | 2023-07-11 | 安徽农业大学 | Plasma torch device |
-
2022
- 2022-06-28 CN CN202210746326.3A patent/CN115103500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116419464A (en) * | 2023-06-09 | 2023-07-11 | 安徽农业大学 | Plasma torch device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8187265B2 (en) | Coagulation apparatus using cold plasma | |
| CN107801286A (en) | A kind of microwave plasma excitated system based on dielectric barrier discharge preionization | |
| CA2649131C (en) | Process for continuous production of carbon fibres | |
| CN115103500A (en) | Microwave resonant cavity generator and carbon fiber preparation process thereof | |
| CN204168591U (en) | A kind of air forces down isothermal plasma generation device | |
| CN110062516B (en) | Device for microwave plasma high-temperature heat treatment of filamentous materials | |
| CN112759408A (en) | Boron carbide ceramic and preparation method and application thereof | |
| Zhang et al. | A high-efficiency dual-band relativistic Cerenkov oscillator based on dual electron beams | |
| CN202979451U (en) | Atmospheric-pressure microwave-plasma torch apparatus | |
| CN110267425B (en) | Combined type double coaxial line atmospheric pressure low temperature microwave plasma jet source | |
| CN214782310U (en) | Carbon fiber microwave plasma heat treatment equipment | |
| CN1746344A (en) | A kind of continuous carbon fibre graphitizing method and device thereof | |
| CN207531150U (en) | A kind of microwave plasma excitated system based on dielectric barrier discharge preionization | |
| US7994966B1 (en) | Device for generation of microwaves | |
| CN210826464U (en) | Microwave heating cavity for graphitizing carbon fiber | |
| CN108615665A (en) | A kind of Relativistic backward-wave oscillator using magnet tail field | |
| CN114867180A (en) | Double-channel atmospheric pressure microwave plasma jet device | |
| CN111010793A (en) | Small-size high-power non-transfer plasma torch and using method thereof | |
| CN216864321U (en) | Multi-mode non-cylindrical resonant cavity MPCVD device with conical reflecting top surface | |
| CN211184390U (en) | Small-size high-power non-transfer plasma torch | |
| CN1142333C (en) | Carbin fibre graphitization process and its equipment | |
| CN108684099A (en) | Fracturing HIGH-POWERED MICROWAVES coaxial heater in a kind of engineering rock mass hole | |
| JPH11251088A (en) | Inductive coupling plasma device | |
| CN205984887U (en) | Tunable speed adjusting pipe amplifier output chamber | |
| CN100573782C (en) | The low energy consumption hydrogen atmosphere device of ultrahigh pressure mercury lamp electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |