CN114892388A - Carbon fiber laser graphitization tunnel preparation method and device - Google Patents
Carbon fiber laser graphitization tunnel preparation method and device Download PDFInfo
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- CN114892388A CN114892388A CN202210639801.7A CN202210639801A CN114892388A CN 114892388 A CN114892388 A CN 114892388A CN 202210639801 A CN202210639801 A CN 202210639801A CN 114892388 A CN114892388 A CN 114892388A
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- carbon fiber
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- graphitization
- temperature
- reflector
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 78
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 78
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000005087 graphitization Methods 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000004065 semiconductor Substances 0.000 claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000005357 flat glass Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004093 laser heating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- D06M10/005—Laser beam treatment
-
- 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
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method and a device of a carbon fiber laser graphitization tunnel, wherein a carbon fiber tow is arranged near the focus of a one-dimensional parabolic reflecting surface and moves along the focal line, a laser beam is adopted to directly irradiate the upper surface of the carbon fiber tow, and the laser beam incident on the parabolic reflecting surface is reflected and converged to the lower surface of the carbon fiber tow, so that the temperature of the carbon fiber tow instantly reaches the graphitization temperature. The carbon fiber laser graphitization tunnel preparation device comprises a reflector (1), a supporting seat (2), a pneumatic connector (3), a fixing plate (4), an optical window plate (5), a semiconductor laser vertical stacked array (6), a laser power supply (7), a controller (8) and a temperature measuring sensor (9). The device has the advantages of short preheating period, high energy utilization rate, low energy consumption, low temperature resistance requirement on furnace body materials and the like.
Description
Technical Field
The invention relates to a carbon fiber laser graphitization tunnel preparation method and a carbon fiber laser graphitization tunnel preparation device, and belongs to the technical field of laser application.
Background
In the preparation of graphite fiber, the graphitization heat treatment of the carbon fiber mainly adopts a high-temperature tube type indirect heating mode and a high-frequency electromagnetic heating mode, and the heating is to heat the environment temperature in the whole furnace body to about 3000 ℃, so that the graphitization furnace has long preheating period, high energy consumption and serious energy waste and provides extremely high temperature resistance and heat insulation requirements for furnace body materials. Laser heating has high temperature in the twinkling of an eye, but heating temperature and heating region accurate control can adopt laser simple irradiation heating carbon fiber, utilizes the carbon fiber to turn into heat energy with laser energy to the realization carries out high temperature heating to the carbon fiber. Since no heating of the ambient temperature is required, laser energy is saved substantially, and energy consumption is expected to be saved by 70%, thereby substantially reducing the manufacturing cost of the graphite fiber. In addition, since an additional heat insulation process is not required, the cost of the graphitization apparatus is also greatly reduced.
Disclosure of Invention
The invention provides a carbon fiber laser graphitization tunnel preparation method and a carbon fiber laser graphitization tunnel preparation device, aiming at the problems that a traditional graphitization device is long in preheating period, high in energy consumption, serious in energy waste and high in temperature resistance requirement on furnace body materials.
The technical solution of the invention is as follows:
a carbon fiber laser graphitization tunnel preparation method is characterized in that a carbon fiber tow is placed near a focus of a one-dimensional parabolic reflecting surface and moves along the focus, a laser beam is adopted to directly irradiate the upper surface of the carbon fiber tow, the carbon fiber tow absorbs light energy and converts the light energy into heat energy, and therefore the temperature of the carbon fiber tow instantly reaches graphitization temperature; the laser beam incident on the parabolic reflecting surface is reflected and converged to the lower surface of the carbon fiber tows, so that the absorption efficiency of the carbon fiber tows on the irradiation laser beam is improved; the stable heating temperature of the carbon fiber tows is realized by accurately controlling the laser power output by the laser, so that the temperature of a heated area on the surface of the carbon fiber tows is stabilized in a graphitization temperature range; in order to prevent the carbon fiber from being oxidized at high temperature, argon or helium is introduced into the carbon fiber laser graphitization tunnel preparation device to be used as protective gas.
As shown in fig. 1 and fig. 2, the carbon fiber laser graphitization tunnel preparation device provided by the invention comprises a reflector 1, a support base 2, a pneumatic connector 3, a fixing plate 4, an optical window plate 5, a semiconductor laser vertical stacked array 6, a laser power supply 7, a controller 8 and a temperature measurement sensor 9;
the reflector 1 is a one-dimensional paraboloid reflector made of metal, the reflecting surface of the reflector is parabolic, a high-reflection film for outputting wavelength to the semiconductor laser vertical stacked array 6 is plated on the reflecting surface, the reflectivity is not lower than 99%, and the reflector is used for reflecting and converging laser beams which are not irradiated on the upper surface of the carbon fiber tows to the lower surface of the carbon fiber tows;
as shown in fig. 2, the support base 2 is a metal shell, four side surfaces of the bottom of the support base are connected with the reflector 1 through screws, the optical window plate 5 is fixed through the light through hole on the upper surface, the center of the light through hole is the focus of the parabolic reflecting surface of the reflector 1, the carbon fiber tows enter the carbon fiber laser graphitization tunnel preparation device along the light through hole, and are irradiated and heated by the semiconductor laser vertical stacking array 6 to become graphite fibers, and the graphite fibers are conveyed out from the other end of the carbon fiber laser graphitization tunnel preparation device;
the pneumatic joint 3 is an L-shaped metal joint and is used for introducing argon or helium into the carbon fiber laser graphitization tunnel preparation device;
the fixing plate 4 is a special-shaped thin plate made of metal, is fixed on the supporting seat 2 through a screw and is used for clamping the semiconductor laser vertical stacked array 6 and the temperature measuring sensor 9;
the optical window plate 5 is made of quartz optical flat glass with a round hole, the upper surface of the optical window plate is plated with an optical antireflection film for outputting the wavelength of the light output by the semiconductor laser vertical laminated array 6, the transmissivity of the optical window plate is not lower than 99.5%, and the optical window plate is used for protecting the semiconductor laser vertical laminated array 6 from being polluted by smoke dust;
the semiconductor laser vertical stacked array 6 is a vertical stacked array semiconductor laser with the wavelength of 808nm, 940nm or 976nm, the fast axis divergence angle of the output light beam of the semiconductor laser vertical stacked array is not more than 2 degrees, and the semiconductor laser vertical stacked array is fixed on the fixing plate 4 through screws and used for irradiating and heating the upper surface of the carbon fiber tows;
the laser power supply 7 is a constant current source with self-adaptive voltage and is used for supplying power to the semiconductor laser vertical stacked array 6;
the controller 8 is a singlechip controller, collects temperature signals from the temperature measuring sensor 9, and outputs 0-10V voltage to control the laser power output by the laser power supply 7 by comparing the temperature signals with a set temperature range;
the temperature measuring sensor 9 is an online non-contact infrared temperature measuring sensor and is fixed on the fixing plate 4 through a screw, and the temperature measuring end penetrates through the round hole of the optical window plate 5 and is used for measuring the temperature of the heated position of the upper surface of the carbon fiber tow.
Has the advantages that: according to the preparation method and device of the carbon fiber laser graphitization tunnel, the upper surface of the carbon fiber tows is heated by adopting laser beam irradiation, and the laser beam which is not irradiated on the upper surface of the carbon fiber tows is reflected and converged on the lower surface of the carbon fiber tows by adopting the parabolic reflecting surface, so that the light beam emitted by a laser is fully absorbed and utilized by the carbon fiber tows.
Drawings
Fig. 1 is a front view of a carbon fiber laser graphitization tunnel preparation device.
Fig. 2 is a left side view of a carbon fiber laser graphitization tunnel preparation device.
In the figure: the method comprises the following steps of 1-a reflector, 2-a supporting seat, 3-a pneumatic connector, 4-a fixing plate, 5-an optical window plate, 6-a semiconductor laser vertical stacked array, 7-a laser power supply, 8-a controller and 9-a temperature measuring sensor.
Detailed Description
Example 1 a method and apparatus for making a specialty fiber laser tunnel.
The technical solution of the invention is as follows:
a carbon fiber laser graphitization tunnel preparation method is characterized in that a carbon fiber tow is placed near a focus of a one-dimensional parabolic reflecting surface and moves along the focus, a laser beam is adopted to directly irradiate the upper surface of the carbon fiber tow, the carbon fiber tow absorbs light energy and converts the light energy into heat energy, and therefore the temperature of the carbon fiber tow instantly reaches graphitization temperature; the laser beam incident on the parabolic reflecting surface is reflected and converged to the lower surface of the carbon fiber tows, so that the absorption efficiency of the carbon fiber tows on the irradiation laser beam is improved; the stable heating temperature of the carbon fiber tows is realized by accurately controlling the laser power output by the laser, so that the temperature of a heated area on the surface of the carbon fiber tows is stabilized in a graphitization temperature range; in order to prevent the carbon fiber from being oxidized at high temperature, argon is introduced into the carbon fiber laser graphitization tunnel preparation device to serve as protective gas.
As shown in fig. 1 and fig. 2, the carbon fiber laser graphitization tunnel preparation device provided by the invention comprises a reflector 1, a support base 2, a pneumatic connector 3, a fixing plate 4, an optical window plate 5, a semiconductor laser vertical stacked array 6, a laser power supply 7, a controller 8 and a temperature measurement sensor 9;
the reflector 1 is a one-dimensional paraboloid reflector made of metal, the reflecting surface of the reflector is in a parabola shape, the parabola equation is x ^2 ^ 100y, the reflecting surface is plated with a high-reflection film for outputting the wavelength of the semiconductor laser vertical stacked array 6, the reflectivity is 99.5%, and the reflector is used for reflecting and converging laser beams which are not irradiated on the upper surface of the carbon fiber tow to the lower surface of the carbon fiber tow;
as shown in fig. 2, the support base 2 is a metal shell, four side surfaces of the bottom of the support base are connected with the reflector 1 through screws, the optical window plate 5 is fixed through the light through hole on the upper surface, the center of the light through hole is the focus of the parabolic reflecting surface of the reflector 1, the carbon fiber tows enter the carbon fiber laser graphitization tunnel preparation device along the light through hole, and are irradiated and heated by the semiconductor laser vertical stacking array 6 to become graphite fibers, and the graphite fibers are conveyed out from the other end of the carbon fiber laser graphitization tunnel preparation device;
the pneumatic joint 3 is an L-shaped metal joint and is used for introducing argon into the carbon fiber laser graphitization tunnel preparation device;
the fixing plate 4 is a special-shaped thin plate made of metal, is fixed on the supporting seat 2 through a screw and is used for clamping the semiconductor laser vertical stacked array 6 and the temperature measuring sensor 9;
the optical window plate 5 is made of quartz optical flat glass with a round hole, the upper surface of the optical window plate is plated with an optical antireflection film for outputting the wavelength of the light output by the semiconductor laser vertical laminated array 6, the transmissivity of the optical window plate is 99.8%, and the optical window plate is used for protecting the semiconductor laser vertical laminated array 6 from being polluted by smoke dust;
the vertical stacked array semiconductor laser with the wavelength of 808nm, 940nm or 976nm is preferably selected for the vertical stacked array semiconductor laser 6, the fast axis divergence angle of the output light beam of the vertical stacked array semiconductor laser is 0.5 degrees, and the fast axis divergence angle is fixed on the fixing plate 4 through a screw and used for irradiating and heating the upper surface of the carbon fiber tows;
the laser power supply 7 is a voltage self-adaptive constant current source and is used for supplying power to the semiconductor laser vertical stacked array 6;
the controller 8 is a single chip microcomputer controller, collects temperature signals from the temperature measuring sensor 9, and outputs 0-10V voltage to control the laser power output by the laser power supply 7 through comparison with a set temperature range;
the temperature sensor 9 is an online non-contact infrared temperature sensor and is fixed on the fixing plate 4 through a screw, the temperature measuring end penetrates through the round hole of the optical window plate 5, the temperature measuring range is 1500-3500 ℃, and the temperature sensor is used for measuring the temperature of the heated position on the upper surface of the carbon fiber tow.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A carbon fiber laser graphitization tunnel preparation method is characterized in that a carbon fiber tow is placed near a focus of a one-dimensional parabolic reflecting surface and moves along the focus, a laser beam is adopted to directly irradiate the upper surface of the carbon fiber tow, the carbon fiber tow absorbs light energy and converts the light energy into heat energy, and therefore the temperature of the carbon fiber tow instantly reaches graphitization temperature; the laser beam incident on the parabolic reflecting surface is reflected and converged to the lower surface of the carbon fiber tows, so that the absorption efficiency of the carbon fiber tows on the irradiation laser beam is improved; the stable heating temperature of the carbon fiber tows is realized by accurately controlling the laser power output by the laser, so that the temperature of a heated area on the surface of the carbon fiber tows is stabilized in a graphitization temperature range; in order to prevent the carbon fiber from being oxidized at high temperature, argon or helium is introduced into the carbon fiber laser graphitization tunnel preparation device to be used as protective gas.
2. The device adopted by the carbon fiber laser graphitization tunnel preparation method according to claim 1 is characterized by comprising a reflector (1), a supporting seat (2), a pneumatic connector (3), a fixing plate (4), an optical window plate (5), a semiconductor laser vertical stack array (6), a laser power supply (7), a controller (8) and a temperature measuring sensor (9); the reflector (1) is a one-dimensional paraboloid reflector made of metal, the reflecting surface of the reflector is parabolic, the reflecting surface is plated with a high-reflection film for the output wavelength of the semiconductor laser vertical stacked array (6), and the reflectivity is not lower than 99%; the supporting seat (2) is a metal shell, four side faces of the bottom of the supporting seat are connected with the reflector (1) through screws, the optical window plate (5) is fixed through the light through hole in the upper surface, the center of the light through hole is the focus of the parabolic reflecting surface of the reflector (1), and carbon fiber tows enter the carbon fiber laser graphitization tunnel preparation device along the light through hole, are irradiated and heated through the semiconductor laser vertical stacking array (6) and then become graphite fibers and are conveyed out from the other end of the carbon fiber laser graphitization tunnel preparation device; the pneumatic joint (3) is an L-shaped metal joint; the fixing plate (4) is a special-shaped thin plate made of metal and is fixed on the supporting seat (2) through screws; the optical window plate (5) is made of quartz optical flat glass with a round hole, the upper surface of the optical window plate is plated with an optical antireflection film for outputting the wavelength of light of the semiconductor laser vertical stacked array (6), and the transmissivity is not lower than 99.5%; the semiconductor laser vertical stacked array (6) is a vertical stacked array semiconductor laser with the wavelength of 808nm, 940nm or 976nm, the fast axis divergence angle of the output light beam is not more than 2 degrees, and the semiconductor laser vertical stacked array is fixed on the fixing plate (4) through a screw; the laser power supply (7) is a constant current source with self-adaptive voltage; the controller (8) is a single chip microcomputer controller; the temperature measuring sensor (9) is an online non-contact infrared temperature measuring sensor and is fixed on the fixing plate (4) through a screw, and the temperature measuring end penetrates through a round hole of the optical window plate (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639801.7A CN114892388A (en) | 2022-06-08 | 2022-06-08 | Carbon fiber laser graphitization tunnel preparation method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210639801.7A CN114892388A (en) | 2022-06-08 | 2022-06-08 | Carbon fiber laser graphitization tunnel preparation method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116180275A (en) * | 2023-03-03 | 2023-05-30 | 元峻机械设备(浙江)有限公司 | Carbon fiber preparation process and oxidation furnace |
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2022
- 2022-06-08 CN CN202210639801.7A patent/CN114892388A/en active Pending
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| US6259713B1 (en) * | 1997-12-15 | 2001-07-10 | The University Of Utah Research Foundation | Laser beam coupler, shaper and collimator device |
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|---|---|---|---|---|
| CN116180275A (en) * | 2023-03-03 | 2023-05-30 | 元峻机械设备(浙江)有限公司 | Carbon fiber preparation process and oxidation furnace |
| CN116180275B (en) * | 2023-03-03 | 2023-10-20 | 元峻机械设备(浙江)有限公司 | Carbon fiber preparation process and oxidation furnace |
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