CN113445156A - Pre-oxidized fiber treatment device - Google Patents
Pre-oxidized fiber treatment device Download PDFInfo
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- CN113445156A CN113445156A CN202110548843.5A CN202110548843A CN113445156A CN 113445156 A CN113445156 A CN 113445156A CN 202110548843 A CN202110548843 A CN 202110548843A CN 113445156 A CN113445156 A CN 113445156A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
- D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/32—Apparatus therefor
- D01F9/328—Apparatus therefor for manufacturing filaments from polyaddition, polycondensation, or polymerisation products
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Abstract
The application discloses pre-oxidation fibre processing apparatus includes: the plasma generator comprises a cavity (1), a plasma generating device (2), a base (3), a first driving device (4) and a second driving device (5); the cavity (1) comprises a cavity (11), and a fiber input port (12) and a fiber output port (13) which are oppositely arranged on the side walls of two sides of the cavity (1); the cavity (11) is arranged on the upper side of the base (3), and the plasma generating device (2) is arranged in the cavity (11) of the cavity (1) and on the upper sides of the fiber input port (12) and the fiber output port (13); in the chamber (11), a fiber treatment region (14) is formed by the plasma generation device (2) and the regions between the base (3), the fiber input port (12) and the fiber output port (13). By adopting the device, the polyacrylonitrile-based pre-oxidized fiber can be continuously prepared, and the preparation efficiency, the structure and the performance of the polyacrylonitrile-based pre-oxidized fiber are improved.
Description
Technical Field
The application relates to the technical field of preparation polyacrylonitrile base preoxidation fiber, in particular to a preoxidation fiber processing device.
Background
Carbon fiber, a carbon material containing more than 90% of carbon, has excellent properties such as high specific strength, high specific modulus, high heat resistance, and low density. As one of precursors of carbon fiber, the preparation of carbon fiber from polyacrylonitrile-based fiber mainly comprises thermal oxidation stabilization and carbonization processes. The thermal oxidative stabilization process is generally carried out in an air atmosphere, and in the process, the polyacrylonitrile fiber undergoes cyclization, oxidation, dehydrogenation, crosslinking and other reactions. The performance of polyacrylonitrile-based pre-oxidized fibers has a key influence on the structural performance of the final carbon fibers.
However, the prior art apparatus for pre-oxidizing polyacrylonitrile-based fibers uses a common pre-oxidation furnace, and the pre-oxidation method is to perform pre-oxidation treatment in the pre-oxidation furnace according to a process such as long-time low-temperature pre-oxidation or short-time high-temperature pre-oxidation. The pre-oxidized fiber prepared by the equipment and the method is easy to generate a filament breakage phenomenon, continuous pre-oxidation of the fiber cannot be realized, and the pre-oxidized fiber has structural and performance defects, so that the mechanical property of the final preparation is influenced.
Therefore, how to provide a fiber heat treatment device to improve the performance and preparation efficiency of the pre-oxidized fiber is a problem to be solved.
Disclosure of Invention
The application provides a pre-oxidation fiber treatment device to promote pre-oxidation fiber's performance and preparation efficiency.
The application provides a pre-oxidation fibre processing apparatus, includes: the plasma generator comprises a cavity (1), a plasma generating device (2), a base (3), a first driving device (4) and a second driving device (5); the cavity (1) comprises a cavity (11), and a fiber input port (12) and a fiber output port (13) which are oppositely arranged on the side walls of two sides of the cavity (1); wherein the cavity (11) is arranged at the upper side of the base (3), and the plasma generating device (2) is arranged in the cavity (11) of the cavity (1) and at the upper sides of the fiber input port (12) and the fiber output port (13); in the chamber (11), the plasma-generating device (2) forms a fiber treatment zone (14) with the area between the base (3), the fiber input opening (12) and the fiber output opening (13); the first driving device (4) is arranged outside the fiber input port (12), and the second driving device (5) is arranged outside the fiber output port (13); in the working state, the first driving device (4) drives the fibers (6) to enter the fiber treatment area (14) from the fiber input port (12) for pre-oxidation reaction, and the reacted fibers are output from the fiber output port (13) under the traction of the second driving device (5) and are placed on the second driving device (5).
Optionally, the plasma generation device (2) comprises: a first flow guide plate (21), a second flow guide plate (22), and an electrode device (23); the first baffle (21) is located above the second baffle (22); the first guide plate (21) and the second guide plate (22) comprise through holes which are uniformly distributed; the electrode device (23) is used for being connected with a high-voltage power supply, and ionizing gas under the high-voltage power supply to generate plasma; in the working state, gas enters the shunting structure after being guided by the through holes of the first guide plate (21), and enters the high-voltage area generated by the electrode device (23) through the shunting structure to ionize the gas to generate plasma, and the plasma enters the fiber processing area (14) through the through holes of the second guide plate (22).
Optionally, in the operating state, the fibers (6) are not in contact with the fiber input end and the fiber output end in the fiber treatment chamber.
Optionally, the method further includes: the air inlet (15) is positioned on the side wall of the cavity (1), the air inlet pipe (24) is positioned on the outer side of the cavity (1), and the heating device (25) is arranged on the outer side of the cavity; one end of the air inlet pipe (24) penetrates through the air inlet (15) and is connected with the plasma generating device (2); the other end of the air inlet pipe (24) penetrates through the heating device (25).
Optionally, the method further includes: the heat-insulating diaphragm (16) is positioned on the inner side of the cavity (1), and the heat-insulating diaphragm (16) wraps the plasma generation device (2) and the fiber treatment area (14) so that the fiber treatment area (14) is in a constant temperature area.
Optionally, the heat preservation diaphragm is made of foam and tinfoil.
Optionally, the method further includes: a first blower (7) and a second blower (8) for absorbing the gas discharged from the fiber treatment zone (14), respectively; the first blower (7) is located outside the fibre input opening (12) and the second blower is located outside the fibre output opening (13).
Optionally, the air inlet pipe (24) is a high temperature resistant steel pipe.
Compared with the prior art, the method has the following advantages:
the application provides a pre-oxidation fibre processing apparatus, includes: the plasma generator comprises a cavity (1), a plasma generating device (2), a base (3), a first driving device (4) and a second driving device (5); the cavity (1) comprises a cavity (11), and a fiber input port (12) and a fiber output port (13) which are oppositely arranged on the side walls of two sides of the cavity (1); wherein the cavity (11) is arranged at the upper side of the base (3), and the plasma generating device (2) is arranged in the cavity (11) of the cavity (1) and at the upper sides of the fiber input port (12) and the fiber output port (13); in the chamber (11), the plasma-generating device (2) forms a fiber treatment zone (14) with the area between the base (3), the fiber input opening (12) and the fiber output opening (13); the first driving device (4) is arranged outside the fiber input port (12), and the second driving device (5) is arranged outside the fiber output port (13); in the working state, the first driving device (4) drives the fibers (6) to enter the fiber treatment area (14) from the fiber input port (12) for pre-oxidation reaction, and the reacted fibers are output from the fiber output port (13) under the traction of the second driving device (5) and are placed on the second driving device (5).
The equipment is adopted to carry out pre-oxidation treatment on the polyacrylonitrile-based fiber, the plasma generating device (2) generates plasma and temperature, and the plasma and the temperature are transmitted to the fiber treatment area (14). When the device works, the fibers (6) enter the fiber processing area (14) from the fiber input port (12) to be pre-oxidized under the driving of the first driving device (4), are output through the fiber output port (13) and are wound on the second driving device (5), and continuous preparation of polyacrylonitrile-based pre-oxidized fibers can be realized. And carrying out pre-oxidation reaction in the plasma and temperature environment, so that the preparation efficiency of the polyacrylonitrile-based pre-oxidized fiber can be improved, and when the cyclization degree and the oxidation degree of the pre-oxidized fiber reach standard conditions, the pre-oxidation time is shortened or the pre-oxidation temperature is reduced. In addition, the device for preparing the polyacrylonitrile-based pre-oxidized fiber can control the cyclization degree and the oxidation degree of the fiber, so that the structure and the performance of the polyacrylonitrile-based pre-oxidized fiber are improved.
Drawings
Fig. 1 is a schematic structural diagram of a pre-oxidation fiber treatment device provided in an embodiment of the present application.
Fig. 2 is a side view of a pre-oxidized fiber treatment apparatus according to an embodiment of the present disclosure.
The plasma treatment device comprises a cavity (1), a plasma generation device (2), a base (3), a first driving device (4), a second driving device (5), fibers (6), a first air blower (7), a second air blower (8), a first guide plate (21), a second guide plate (22), an electrode device (23), an air inlet pipe (24), a heating device (25), a chamber (11), a fiber input port (12), a fiber output port (13), a fiber treatment area (14), an air inlet (15) and a heat preservation diaphragm (16).
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
The embodiment of the application provides a pre-oxidation fiber treatment device to promote pre-oxidation fiber's performance and preparation efficiency.
The pre-oxidized fiber treatment apparatus provided in the present application will be described and illustrated in detail by examples below.
As shown in fig. 1 and 2, the pre-oxidized fiber treatment apparatus includes: the plasma generator comprises a cavity (1), a plasma generating device (2), a base (3), a first driving device (4) and a second driving device (5). Are described below.
The cavity (1) comprises: a chamber (11), a fiber input port (12), a fiber output port (13), and an air inlet port (15); the fiber input port (12) and the fiber output port (13) are respectively arranged on the side walls of two sides of the cavity (1) oppositely; the air inlet (15) is arranged on the side wall of the cavity (1), the fiber input port (12) and the upper side of the fiber output port (13). Are described below.
The chamber (11) is used for providing a space for carrying out pre-oxidation treatment on the fibers, and in order to carry out plasma treatment on the fibers in the pre-oxidation process of the fibers, the plasma generating device (2) is arranged in the chamber (11) of the chamber (1) and above the fiber input port (12) and the fiber output port (13). The chamber (11) is arranged on the upper side of the base (3), and a fiber processing area (14) is formed in the chamber (11) by the plasma generating device (2) and the area among the base (3), the fiber input port (12) and the fiber output port (13). The fibers (6) are subjected to a pre-oxidation treatment in the fiber treatment zone (14).
In order to enable the fiber treatment area (14) to reach a constant temperature condition suitable for fiber pre-oxidation, the inner side of the cavity (1) also comprises a heat-insulating diaphragm (16), as shown in figure 1, and the heat-insulating diaphragm (16) wraps the plasma generation device (2) and the fiber treatment area (14). Wherein the temperature in the fiber treatment zone (14) is the temperature generated by the plasma generation device (2), and the plasma is transmitted into the fiber treatment zone (14). The heat-insulation diaphragm (16) is made of foam and tinfoil, specifically, three layers of foam are wrapped by one layer of tinfoil, and the tinfoil layer is in direct contact with the plasma generation device.
In order to prepare polyacrylonitrile base preoxidized fiber continuously, this application still is provided with the drive arrangement who is used for driving the fibre and removes outside the cavity, specifically as follows:
the first driving device (4) is arranged outside the fiber input port (12), and the second driving device (5) is arranged outside the fiber output port (13). Wherein the first drive means (4) comprises a first drive shaft and the second drive means (5) comprises a second drive shaft.
The first drive device (4) serves for the placement of untreated fibers, and the fibers (6) are connected to the second drive device (5) via the fiber input opening (12) through the fiber treatment region (14).
Under the working state, the first driving device (4) drives the fiber (6) to enter the fiber processing area (14) from the fiber input port (12) for pre-oxidation reaction, and the reacted fiber is output from the fiber output port (13) under the traction of the second driving device (5) and placed on the second driving device (5), so that the continuous preparation of the polyacrylonitrile-based fiber is realized through the above mode.
Meanwhile, in the device, the cavity (1) is made of a galvanized steel shell, so that the situation that fibers are broken due to friction when the fibers contact the outer wall of the cavity is avoided, and the fibers (6) are not in contact with the fiber input end and the fiber output end in the fiber processing chamber in the working state. In addition, the shell of the plasma generating device (2) also belongs to the material of a galvanized steel shell, when the device works, the fibers are not in contact with the plasma generating device (2), and the plasma generating device transmits the plasma to the fiber processing area (14) through the through holes uniformly distributed on the second guide plate.
The plasma generating device (2) is used for generating plasma by ionizing gas at high voltage and transmitting the plasma into the fiber processing area (14).
The plasma generation device (2) comprises: a first flow guide plate (21), a second flow guide plate (22), and an electrode device (23); the first baffle (21) is located above the second baffle (22); the first guide plate (21) and the second guide plate (22) comprise through holes which are uniformly distributed; the electrode device (23) is used for being connected with a high-voltage power supply, and ionizing gas under the high-voltage power supply to generate plasma.
In the working state, gas enters the shunting structure after being guided by the through holes of the first guide plate (21), and enters the high-voltage area generated by the electrode device (23) through the shunting structure to ionize the gas to generate plasma, and the plasma enters the fiber processing area (14) through the through holes of the second guide plate (22).
The plasma generating device (2) ionizes gas under high pressure to generate plasma, wherein the gas can generate plasma, such as air, nitrogen, oxygen, hydrogen, argon, helium, methane, propane and the like. The type of gas is not limited in the present application, and the specific type of gas may be determined according to actual conditions.
In order to introduce gas into the plasma generating device (2), the gas inlet (15) positioned on the side wall of the cavity (1) and the gas inlet pipe (24) positioned on the outer side of the cavity (1) are further arranged, as shown in fig. 1 and 2, one end of the gas inlet pipe (24) penetrates through the gas inlet (15) to be connected with the plasma generating device (2).
During the process of ionizing the gas into plasma by the plasma generating device (2), part of heat is generated and is also transferred to the fiber processing area (14). In order to make the fiber treatment area (14) reach a set temperature suitable for fiber pre-oxidation treatment, the device also comprises a heating device (25), and as shown in figures 1 and 2, the other end of the air inlet pipe (24) penetrates through the heating device (25). After the gas enters the gas inlet pipe (24), the gas is heated by the heating device to reach a certain temperature, and after the gas generates plasma in the plasma generating device (2), the plasma is transmitted to the fiber processing area through the through holes of the second guide plate, and simultaneously, the temperature is also transmitted to the fiber processing area.
In order to avoid intake pipe (24) to receive high temperature influence, the intake pipe material that adopts in this application is high temperature resistant steel pipe.
Before the fibers are subjected to pre-oxidation treatment, a temperature marking tool is adopted to detect that the temperature of the fiber treatment area reaches a set temperature, and then a first driving device is started to drive the fibers to enter the fiber treatment area for pre-oxidation treatment.
In addition, during the process that the plasma production equipment ionizes the gas to form the plasma, ozone is also generated, and in order to avoid the leakage of the ozone, the device also comprises a first air blower (7) and a second air blower (8) which are respectively used for absorbing the gas exhausted from the fiber treatment area (14); the first blower (7) is located outside the fibre input opening (12) and the second blower is located outside the fibre output opening (13). As shown in fig. 1 and 2, the first blower (7) and the second blower (8) are respectively located at the rear side direction of the position of the fiber input port (12) and the fiber output port (13), when ozone gas is output from the fiber input port and the fiber output port, the first blower and the second blower suck the ozone, and the laboratory environment is prevented from being polluted.
The application provides a pre-oxidation fibre processing apparatus, includes: the plasma generator comprises a cavity (1), a plasma generating device (2), a base (3), a first driving device (4) and a second driving device (5); the cavity (1) comprises a cavity (11), and a fiber input port (12) and a fiber output port (13) which are oppositely arranged on the side walls of two sides of the cavity (1); wherein the cavity (11) is arranged at the upper side of the base (3), and the plasma generating device (2) is arranged in the cavity (11) of the cavity (1) and at the upper sides of the fiber input port (12) and the fiber output port (13); in the chamber (11), the plasma-generating device (2) forms a fiber treatment zone (14) with the area between the base (3), the fiber input opening (12) and the fiber output opening (13); the first driving device (4) is arranged outside the fiber input port (12), and the second driving device (5) is arranged outside the fiber output port (13); in the working state, the first driving device (4) drives the fibers (6) to enter the fiber treatment area (14) from the fiber input port (12) for pre-oxidation reaction, and the reacted fibers are output from the fiber output port (13) under the traction of the second driving device (5) and are placed on the second driving device (5).
The equipment is adopted to carry out pre-oxidation treatment on the polyacrylonitrile-based fiber, the plasma generating device (2) generates plasma and temperature, and the plasma and the temperature are transmitted to the fiber treatment area (14). When the device works, the fibers (6) enter the fiber processing area (14) from the fiber input port (12) to be pre-oxidized under the driving of the first driving device (4), are output through the fiber output port (13) and are wound on the second driving device (5), and continuous preparation of polyacrylonitrile-based pre-oxidized fibers can be realized. And carrying out pre-oxidation reaction in the plasma and temperature environment, so that the preparation efficiency of the polyacrylonitrile-based pre-oxidized fiber can be improved, and when the cyclization degree and the oxidation degree of the pre-oxidized fiber reach standard conditions, the pre-oxidation time is shortened or the pre-oxidation temperature is reduced. In addition, the device for preparing the polyacrylonitrile-based pre-oxidized fiber can control the cyclization degree and the oxidation degree of the fiber, so that the structure and the performance of the polyacrylonitrile-based pre-oxidized fiber are improved.
Through experimental determination, adopt the pre-oxidation fibre processing apparatus that this application provided to prepare polyacrylonitrile base pre-oxidation fibre compare with the conventional polyacrylonitrile base pre-oxidation fibre who prepares in the air atmosphere, have following beneficial effect:
example 1 (fibers were pre-oxidized at the same pre-oxidation temperature for different pre-oxidation times)
And starting the plasma generating device, introducing air into the air inlet pipe, heating the gas entering the air inlet pipe by the heating device, ionizing the gas at high pressure by the plasma generating device to generate plasma, and introducing the plasma into the fiber treatment area through the through holes of the second guide plate. The temperature of the fiber processing area is controlled at 230 ℃, 240 ℃, 250 ℃, 260 ℃ and 270 ℃ respectively, and the processing time of the fiber sample under each temperature condition is 2min to carry out pre-oxidation treatment on the fiber.
The bulk density of polyacrylonitrile-based pre-oxidized fibers treated by plasma and the bulk density of polyacrylonitrile-based pre-oxidized fibers prepared by a conventional pre-oxidation furnace (not including a plasma generator) are illustrated by table 1, and the specific data are shown in table 1.
TABLE 1
Wherein 1) ρ is the bulk density;
2) Plasma-SFs refer to Plasma-preoxidized fibers, namely polyacrylonitrile-based preoxidized fibers after preoxidation treatment of the fibers in a Plasma atmosphere;
3) Air-SFs, refers to Air-pre-oxidized fibers, i.e., polyacrylonitrile-based pre-oxidized fibers after pre-oxidation treatment of the fibers in an Air atmosphere.
As can be seen from table 1, under the same preoxidation time conditions, the density of the produced preoxidized fiber increased with the increase in temperature, and further, under the same preoxidation process, the density of the plasma-polyacrylonitrile-based preoxidized fiber was higher than that of the air-polyacrylonitrile-based preoxidized fiber, indicating that the plasma treatment of the fiber promoted the preoxidation treatment of the fiber. From the density growth rates in table 1, it is understood that the density growth rate of the pre-oxidized fiber density after plasma treatment and the pre-oxidized fiber density under air treatment reaches the maximum value at a temperature of 260 ℃, which indicates that the pre-oxidation effect of the plasma on the fiber is the best at a temperature of 260 ℃. When the temperature is higher than 260 ℃, the temperature has a dominant effect on the pre-oxidation of the fibers.
As can be seen from Table 1, the pre-oxidation fiber treatment device provided by the application is adopted to prepare polyacrylonitrile-based pre-oxidation fibers, and plasma treatment is carried out on the fibers, so that the pre-oxidation temperature of the fibers is favorably reduced under the condition that the pre-oxidation time is the same.
Example 2 (different Pre-Oxidation temperature same Pre-oxidation time conditions for fibers)
And starting the plasma generating device, introducing air into the air inlet pipe, heating the gas entering the air inlet pipe by the heating device, ionizing the gas at high pressure by the plasma generating device to generate plasma, and introducing the plasma into the fiber treatment area through the through holes of the second guide plate. Fixing the temperature of the fiber treatment area at 250 ℃, and performing pre-oxidation treatment on the fibers for 2min, 4min, 6min, 8min and 10min respectively.
The bulk density of polyacrylonitrile-based pre-oxidized fibers treated by plasma and the bulk density of polyacrylonitrile-based pre-oxidized fibers prepared by a conventional pre-oxidation furnace (not including a plasma generator) are illustrated by table 2, and the specific data are shown in table 2.
TABLE 2
As can be seen from Table 2, the growth rate of bulk density was the greatest in the samples of Plasma-SFs and Air-SFs obtained at 250 ℃ for a treatment time of 2min, and the growth rate gradually decreased with the lapse of time, and the growth rate exhibited a phenomenon of reverse rebound after 4 min. It was thus shown that the best plasma conditions in this time frame were a temperature of 250 ℃ for a period of 2 min.
In conclusion, the plasma is adopted to treat the fiber and then carry out pre-oxidation treatment, and the plasma carries out short-time treatment on the fiber under the condition of the same pre-oxidation temperature, so that the preparation of the polyacrylonitrile-based pre-oxidation fiber with better bulk density is facilitated.
Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.
Claims (8)
1. A pre-oxidized fiber treatment apparatus, comprising: the plasma generator comprises a cavity (1), a plasma generating device (2), a base (3), a first driving device (4) and a second driving device (5); the cavity (1) comprises a cavity (11), and a fiber input port (12) and a fiber output port (13) which are oppositely arranged on the side walls of two sides of the cavity (1);
wherein the cavity (11) is arranged at the upper side of the base (3), and the plasma generating device (2) is arranged in the cavity (11) of the cavity (1) and at the upper sides of the fiber input port (12) and the fiber output port (13); in the chamber (11), the plasma-generating device (2) forms a fiber treatment zone (14) with the area between the base (3), the fiber input opening (12) and the fiber output opening (13); the first driving device (4) is arranged outside the fiber input port (12), and the second driving device (5) is arranged outside the fiber output port (13);
in the working state, the first driving device (4) drives the fibers (6) to enter the fiber treatment area (14) from the fiber input port (12) for pre-oxidation reaction, and the reacted fibers are output from the fiber output port (13) under the traction of the second driving device (5) and are placed on the second driving device (5).
2. The device according to claim 1, characterized in that the plasma-generating device (2) comprises: a first flow guide plate (21), a second flow guide plate (22), and an electrode device (23);
the first baffle (21) is located above the second baffle (22);
the first guide plate (21) and the second guide plate (22) comprise through holes which are uniformly distributed;
the electrode device (23) is used for being connected with a high-voltage power supply, and ionizing gas under the high-voltage power supply to generate plasma;
in the working state, gas enters the shunting structure after being guided by the through holes of the first guide plate (21), and enters the high-voltage area generated by the electrode device (23) through the shunting structure to ionize the gas to generate plasma, and the plasma enters the fiber processing area (14) through the through holes of the second guide plate (22).
3. The device according to claim 1, characterized in that in the operating state the fibres (6) are not in contact with the fibre input end and the fibre output end in the fibre treatment chamber.
4. The apparatus of claim 1, further comprising: the air inlet (15) is positioned on the side wall of the cavity (1), the air inlet pipe (24) is positioned on the outer side of the cavity (1), and the heating device (25) is arranged on the outer side of the cavity;
one end of the air inlet pipe (24) penetrates through the air inlet (15) and is connected with the plasma generating device (2); the other end of the air inlet pipe (24) penetrates through the heating device (25).
5. The apparatus of claim 1, further comprising: the heat-insulating diaphragm (16) is positioned on the inner side of the cavity (1), and the heat-insulating diaphragm (16) wraps the plasma generation device (2) and the fiber treatment area (14) so that the fiber treatment area (14) is in a constant temperature area.
6. The device of claim 5, wherein the heat-insulating membrane is made of foam and tinfoil.
7. The apparatus of claim 1, further comprising: a first blower (7) and a second blower (8) for absorbing the gas discharged from the fiber treatment zone (14), respectively;
the first blower (7) is located outside the fibre input opening (12) and the second blower is located outside the fibre output opening (13).
8. The device according to claim 1, characterized in that the intake pipe (24) is a high temperature resistant steel pipe.
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| CN202110548843.5A CN113445156A (en) | 2021-05-20 | 2021-05-20 | Pre-oxidized fiber treatment device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442519A (en) * | 2002-03-05 | 2003-09-17 | 陈新谋 | New technology and device for pdyacrylonitril fiber preoxidation and carbonation |
| CN105590825A (en) * | 2014-11-03 | 2016-05-18 | 中微半导体设备(上海)有限公司 | Gas conveying apparatus and plasma processing apparatus |
| JP3216682U (en) * | 2018-01-29 | 2018-06-14 | 永虹先進材料股▲ふん▼有限公司 | Fiber pre-oxidation equipment |
| CN212714251U (en) * | 2020-06-17 | 2021-03-16 | 常州市宏发纵横新材料科技股份有限公司 | Carbon fiber tow surface treatment device |
-
2021
- 2021-05-20 CN CN202110548843.5A patent/CN113445156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442519A (en) * | 2002-03-05 | 2003-09-17 | 陈新谋 | New technology and device for pdyacrylonitril fiber preoxidation and carbonation |
| CN105590825A (en) * | 2014-11-03 | 2016-05-18 | 中微半导体设备(上海)有限公司 | Gas conveying apparatus and plasma processing apparatus |
| JP3216682U (en) * | 2018-01-29 | 2018-06-14 | 永虹先進材料股▲ふん▼有限公司 | Fiber pre-oxidation equipment |
| CN212714251U (en) * | 2020-06-17 | 2021-03-16 | 常州市宏发纵横新材料科技股份有限公司 | Carbon fiber tow surface treatment device |
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Application publication date: 20210928 |