CN114960176A - High-degree plasma surface modification device and method for large fiber tows - Google Patents
High-degree plasma surface modification device and method for large fiber tows Download PDFInfo
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- CN114960176A CN114960176A CN202210574530.1A CN202210574530A CN114960176A CN 114960176 A CN114960176 A CN 114960176A CN 202210574530 A CN202210574530 A CN 202210574530A CN 114960176 A CN114960176 A CN 114960176A
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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
- D06M10/02—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 ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
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- 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
- H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention belongs to the technical field of plasma surface modification, and discloses a high-degree plasma surface modification device and a high-degree plasma surface modification method for large fiber tows, wherein the device is divided into a yarn spreading module, a dielectric barrier discharge module, a yarn gathering module and a ventilation module; generating continuous and stable plasma in the dielectric gap region through dielectric barrier discharge and stable airflow ventilation; the fiber tows are driven to pass through the gap area at a constant speed in a plane spreading state through the yarn spreading/gathering device and the yarn collecting rotating mechanism; and then, by cooperatively controlling parameters such as discharge pressure and frequency, gap size, airflow flow velocity, fiber tow movement speed and the like, uniform and dense plasma is formed in a gap area, and the plasma surface modification effect of the large fiber tow is ensured. The whole modification device and method have the advantages of simple principle and structure, low cost, easy operation, good parameter controllability, high automation degree and strong universality, and can be suitable for various fiber tows such as carbon fibers, glass fibers, aramid fibers and the like.
Description
Technical Field
The invention belongs to the technical field of plasma surface modification, and particularly relates to a high-degree plasma surface modification device and method for large fiber tows.
Background
At present, a fiber reinforced resin matrix composite is a light high-strength composite and is commonly used in the fields of aerospace, energy traffic and the like. The fiber reinforced resin-based composite material is a composite material which is composed of resin as a matrix, and fibers such as carbon fibers, glass fibers, aramid fibers and the like as reinforcements in a certain proportion and arrangement mode. The interface between the fiber and the resin in the composite material is the stress transmission surface, and the interface bonding strength is one of the key factors for determining the strength performance of the composite material. Therefore, the method for improving the interface performance between the fiber and the resin by coarsening and chemically activating the surface of the fiber through a surface modification technology becomes one of important ways for improving the mechanical performance of the composite material.
The surface modification of the fiber plasma is to utilize the oxidation and etching effects of high-energy particles such as electrons, ions and the like in the plasma on the surface of the fiber; removing the weak interface layer on the surface of the fiber to form a large amount of new chemical structures such as free radicals and active groups; the polarity and the surface roughness of the fibers are increased, so that the chemical bonding and physical embedding interaction between the carbon fibers and the resin matrix are enhanced; thereby increasing the interfacial adhesion property of the composite material. However, the existing plasma fiber surface modification technology mainly adopts a jet plasma device, generates plasma through radio frequency power generation, blows the plasma out of a tubular generator through airflow, is poor in uniformity of fiber tow modification treatment, mainly treats the peripheral surface of the fiber tow, and particularly hardly treats the inner fiber surface of large fiber tows such as 24K and 48K effectively. Therefore, in order to solve the above problems, a uniform and overall surface modification apparatus and method applicable to large fiber tows are continuously provided.
Through the above analysis, the problems and defects of the prior art are as follows: the plasma of the existing jet plasma surface modification device is jetted along with air flow, has single directivity, can only carry out modification treatment on a certain surface or a certain direction of a fiber tow, and the back and the inside of the fiber tow cannot be effectively treated, so that the uniformity and the effect of the modification treatment cannot be ensured.
The difficulty in solving the above problems and defects is: the existing jet plasma generation mode can not form a uniform plasma area, and can not allow all fibers of a large fiber tow to fully and uniformly interact with the plasma, so that the plasma generation mode and the interaction mode of the plasma and the fibers need to be changed, and the plasma generation and distribution uniformity and the full contact action with all fiber yarns are ensured.
The significance for solving the problems and the defects is as follows: the plasma surface modification treatment can be fully and uniformly carried out on all fibers of the large fiber tows, so that the plasma surface modification effect and efficiency of the fibers are improved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-degree plasma surface modification device and method for large fiber tows.
The invention is realized in such a way that the surface modification device of the high-degree plasma of the large fiber tows is divided into a yarn spreading module, a dielectric barrier discharge module, a yarn gathering module and a ventilation module;
the yarn spreading module comprises a fiber yarn releasing bobbin and a yarn spreading combination roller, and is used for mechanically spreading yarns by the left and right and up and down movement of the yarn spreading roller so as to spread bundled fibers into a plane uniform distribution state;
the dielectric barrier discharge module comprises an upper flat-plate-shaped insulating medium, a lower flat-plate-shaped insulating medium, an insulating medium plate fixing and moving device, an upper high-voltage electrode, a lower grounding electrode, an electric wire and an alternating current high-voltage generator, wherein the upper flat-plate-shaped insulating medium, the lower flat-plate-shaped insulating medium, the upper high-voltage electrode and the lower grounding electrode form a dielectric barrier discharge mode to generate plasma;
the yarn gathering module comprises a yarn gathering combined roller, a fiber yarn releasing bobbin, a fiber yarn collecting bobbin and a rotating mechanism, yarn gathering is carried out through the combined roller which vibrates left and right and up and down, the principle and the process are opposite to yarn spreading, and then the yarn is wound up on the fiber yarn collecting bobbin;
and the ventilation module comprises a rectangular nozzle, an air guide pipe and an air pump and is used for ventilating the gap area between the two flat-plate-shaped insulating media by air pumping of the air pump and air blowing of the annular nozzle.
Further, the large fiber tows come out of the fiber unwinding yarn drum, pass through the flat plate gap in a plane uniformly distributed state after passing through the yarn unwinding combination roller, pass through the yarn gathering combination roller after being subjected to plasma surface modification, and then are wound up in the fiber winding yarn drum, and the fiber tows are driven by the rotating mechanism in the whole process;
furthermore, the upper and lower flat-plate-shaped insulating media in the dielectric barrier discharge module form a parallel structure through a fixing device, and the size of a flat-plate gap can be adjusted through a moving device.
Further, a high-voltage electrode is arranged above the upper flat plate insulating medium and connected with an alternating-current high-voltage generator through a wire, a grounding electrode is arranged below the lower flat plate insulating medium and connected with the alternating-current high-voltage generator through a wire, and the grounding electrode can generate electricity to generate plasma after being electrified.
Further, the grounding electrode is connected with a grounding wire in an on-circuit lap joint mode between the high-voltage generator and the grounding electrode through a wire.
The invention also aims to provide a high-degree plasma surface modification method for large fiber tows, which comprises the following steps:
firstly, starting high-voltage discharge, and generating plasma in upper and lower flat insulation medium gap areas in a dielectric barrier discharge mode;
secondly, starting an air pump again, and stably ventilating the gap area through a rectangular nozzle to ensure the generation of continuous and stable plasma;
thirdly, starting the yarn spreading/collecting device and the yarn collecting rotating mechanism to drive the fiber tows to pass through the gap area in a plane spreading state at a constant speed;
and fourthly, forming uniform, dense and continuous plasma in the gap area by cooperatively controlling parameters such as discharge pressure and frequency, gap thickness, airflow velocity, fiber tow movement speed and the like, and ensuring the plasma surface modification effect of the large fiber tow.
The invention also aims to provide a high-degree plasma surface modification method of the carbon fiber tows, which uses the high-degree plasma surface modification device of the large fiber tows.
The invention also aims to provide a glass fiber strand high-level plasma surface modification method, which uses the large fiber strand high-level plasma surface modification device.
The invention also aims to provide a high-degree plasma surface modification method for the aramid fiber tows, which uses the high-degree plasma surface modification device for the large fiber tows.
The invention also aims to provide a high-level plasma surface modification method for the cellulose diacetate tow, which uses the high-level plasma surface modification device for the large fiber tow.
By combining all the technical schemes, the invention has the advantages and positive effects that: the invention combines the generation of dielectric barrier discharge plasma with the stable airflow ventilation, and forms a stable and continuous plasma region in the parallel insulating dielectric gap, thereby obviously improving the uniformity of the plasma; the structure of the fiber tow spreading combined roller is innovatively combined, the large fiber tows are spread to be in a plane uniform distribution state and are fully contacted and acted with plasma, and the surface modification degree of the fiber tows is obviously improved; the surface modification device can perform discharge pressure and frequency, gap thickness, airflow velocity, fiber tow movement speed and other parameters cooperative control according to the state of the fiber tows, and greatly improves the effect and efficiency of plasma surface modification of the large fiber tows. The whole modification device and method have the advantages of simple principle and structure, low cost, easy operation, good parameter controllability, high automation degree and strong universality, and can be suitable for various fiber tows such as carbon fibers, glass fibers, aramid fibers and the like.
Drawings
FIG. 1 is a schematic structural diagram of a high-level plasma surface modification device for large fiber tows, provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a high-level plasma surface modification device for large fiber tows according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for high-level plasma surface modification of a large fiber tow according to an embodiment of the present invention;
in the figure: 1. a first roll of fiber; 2. a yarn spreading roller structure; 3. a ground electrode; 4. a gas stream; 5. an electric wire; 6. a rectangular vent nozzle; 7. an insulating dielectric sheet; 8. a high voltage electrode; 9. a yarn gathering roller structure; 10. a second fiber reel; 11. an alternating current high voltage generator; 12. and a ground line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a high-degree plasma surface modification device and method for large fiber tows, and the invention is described in detail by combining the attached drawings.
The device for modifying the surface of a large fiber tow by high-level plasma provided by the present invention can also be implemented by other steps by those skilled in the art, and the device for modifying the surface of a large fiber tow by high-level plasma provided by the present invention in fig. 1 is only one specific example.
The yarn spreading module comprises a fiber yarn releasing bobbin and a yarn spreading combination roller, and is used for mechanically spreading yarns by the left and right and up and down movement of the yarn spreading roller so as to spread bundled fibers into a plane uniform distribution state;
the dielectric barrier discharge module comprises an upper flat-plate-shaped insulating medium, a lower flat-plate-shaped insulating medium, an insulating medium plate fixing and moving device, an upper high-voltage electrode, a lower grounding electrode, an electric wire and an alternating current high-voltage generator, wherein the upper flat-plate-shaped insulating medium, the lower flat-plate-shaped insulating medium, the upper high-voltage electrode and the lower grounding electrode form a dielectric barrier discharge mode to generate plasma;
the yarn gathering module comprises a yarn gathering combined roller, a fiber yarn releasing bobbin, a fiber yarn collecting bobbin and a rotating mechanism, yarn gathering is carried out through the combined roller which vibrates left and right and up and down, the principle and the process are opposite to yarn spreading, and then the yarn is wound up on the fiber yarn collecting bobbin;
and the ventilation module comprises a rectangular nozzle, an air guide pipe and an air pump and is used for ventilating the gap area between the two flat-plate-shaped insulating media by air pumping of the air pump and air blowing of the annular nozzle.
As shown in fig. 1, the high-level plasma surface modification device for large fiber tows provided by the embodiment of the present invention is provided with a first fiber winding drum 1, a yarn spreading roller structure 2 is provided at the right end of the first fiber winding drum 1, a dielectric barrier discharge structure is provided at the right end of the yarn spreading roller structure 2, a yarn collecting roller structure 9 is provided at the right end of the dielectric barrier discharge structure, and a second fiber winding drum 10 is provided at the right end of the yarn collecting roller structure 9. A ventilation rectangular nozzle 6 is arranged below the dielectric barrier discharge structure, and the ventilation rectangular nozzle 6 blows out airflow 4; the dielectric barrier discharge structure is provided with an upper insulating dielectric plate 7 and a lower insulating dielectric plate 7, a high-voltage electrode 8 is arranged above the upper insulating dielectric plate 7, and the high-voltage electrode 8 is connected with an alternating current high-voltage generator 11 through a wire 5. The grounding electrode 3 is mounted below the lower insulating medium plate 7, the grounding electrode 3 is connected with the AC high voltage generator 11 through the wire 5, and the grounding wire 12 is lapped on the circuit between the grounding electrode 3 and the AC high voltage generator 11 through the wire 5.
As shown in fig. 2, the method for high-level plasma surface modification of a large fiber tow provided by the embodiment of the invention comprises the following steps:
s201, starting high-voltage discharge, and generating plasma in upper and lower flat insulation medium gap areas in a dielectric barrier discharge mode;
s202, starting an air pump, and stably ventilating the gap area through the rectangular nozzle to ensure continuous and stable plasma generation;
s203, starting the yarn spreading/collecting device and the yarn collecting rotating mechanism to drive the fiber tows to pass through the gap area in a plane spreading state at a constant speed;
s204, by cooperatively controlling parameters such as discharge pressure and frequency, gap thickness, airflow velocity, fiber tow movement velocity and the like, uniform, dense and continuous plasma is formed in the gap area, and the plasma surface modification effect of the large fiber tow is ensured.
The working principle of the invention is as follows: two large electrodes are used for dielectric barrier discharge, airflow is transversely led into the control dielectric gap and the gap, and the airflow flow is controlled according to the high-voltage power generation frequency, so that plasmas which are uniformly and densely distributed are formed in the dielectric gap; the large tow fiber is unfolded by utilizing a mechanical yarn spreading structure, so that the fiber yarn is fully contacted with plasma, and the plasma surface modification quality and efficiency of the fiber tow are improved; and after the fiber tows pass through the dielectric barrier discharge plasma area, the fiber tows are combined through a mechanical yarn gathering structure.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The surface modification device for the high-degree plasma of the large fiber tows is characterized by being provided with a yarn spreading module, a dielectric barrier discharge module, a yarn gathering module and a ventilation module;
the yarn spreading module comprises a fiber yarn releasing bobbin and a yarn spreading combination roller, and is used for performing mechanical yarn spreading through the left-right and up-down movement of the yarn spreading roller to spread the fasciculate fiber yarns into a plane uniform distribution state;
the dielectric barrier discharge module comprises an upper flat-plate-shaped insulating medium, a lower flat-plate-shaped insulating medium, an insulating medium plate fixing and moving device, an upper high-voltage electrode, a lower grounding electrode, an electric wire and an alternating current high-voltage generator, wherein the upper flat-plate-shaped insulating medium, the lower flat-plate-shaped insulating medium, the upper high-voltage electrode and the lower grounding electrode form a dielectric barrier discharge mode to generate plasma;
the yarn gathering module comprises a yarn gathering combined roller, a fiber yarn releasing bobbin, a fiber yarn collecting bobbin and a rotating mechanism, yarn gathering is carried out through the combined roller which vibrates left and right and up and down, the principle and the process are opposite to yarn spreading, and then the yarn is wound up on the fiber yarn collecting bobbin;
and the ventilation module comprises a rectangular nozzle, an air guide pipe and an air pump and is used for ventilating the gap area between the two flat-plate-shaped insulating media by air pumping of the air pump and air blowing of the annular nozzle.
2. The large fiber tow high-degree plasma surface modification device according to claim 1, wherein the large fiber tow is led out from the fiber tow releasing bobbin, passes through the flat plate gap in a plane uniform distribution state after passing through the yarn spreading and combining roller, passes through the yarn collecting and combining roller after being subjected to plasma surface modification, is wound up in the fiber tow receiving bobbin, and is driven by the rotating mechanism in the whole process.
3. The large fiber tow high-level plasma surface modification device according to claim 1, wherein the upper and lower flat insulating mediums in the dielectric barrier discharge module form a parallel structure through a fixing device, and the size of the flat gap can be adjusted through a moving device.
4. The large fiber tow high-level plasma surface modification device according to claim 1, wherein a high-voltage electrode is mounted above the upper flat plate insulating medium, the high-voltage electrode is connected with an alternating current high-voltage generator through a wire, a grounding electrode is mounted below the lower flat plate insulating medium, the grounding electrode is connected with the alternating current high-voltage generator through a wire, and after the large fiber tow high-level plasma surface modification device is electrified, plasma can be generated through discharge.
5. The large fiber tow high level plasma surface modification apparatus of claim 4, wherein the ground electrode is electrically connected to a ground wire through a wire connection to a high voltage flow generator.
6. The large fiber tow high-degree plasma surface modification method of the large fiber tow high-degree plasma surface modification device according to any one of claims 1 to 5 in real time is characterized by comprising the following steps of:
firstly, starting high-voltage discharge, and generating plasma in upper and lower flat insulation medium gap areas in a dielectric barrier discharge mode;
secondly, starting an air pump again, and stably ventilating the gap area through a rectangular nozzle to ensure the generation of continuous and stable plasma;
thirdly, starting the yarn spreading/collecting device and the yarn collecting rotating mechanism to drive the fiber tows to pass through the gap area in a plane spreading state at a constant speed;
and fourthly, forming uniform, dense and continuous plasma in the gap area by cooperatively controlling parameters of discharge pressure and frequency, gap thickness, airflow velocity and fiber tow movement velocity, and ensuring the plasma surface modification effect of the large fiber tow.
7. A method for modifying the surface of a carbon fiber tow by high-level plasma, which is characterized in that the device for modifying the surface of a large fiber tow by high-level plasma according to any one of claims 1 to 5 is used.
8. A method for modifying the surface of a glass fiber strand by using a high-level plasma, which is characterized by using the device for modifying the surface of a large fiber strand by using a high-level plasma according to any one of claims 1 to 5.
9. The method for modifying the surface of the aramid fiber tow by high-level plasma is characterized by using the device for modifying the surface of the aramid fiber tow by high-level plasma according to any one of claims 1 to 5.
10. A high-degree plasma surface modification method of a cellulose diacetate tow, characterized in that the high-degree plasma surface modification method of the cellulose diacetate tow uses the high-degree plasma surface modification device of a large fiber tow according to any one of claims 1 to 5.
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| CN202210574530.1A CN114960176B (en) | 2022-05-25 | 2022-05-25 | High-degree plasma surface modification device and method for large fiber tows |
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| CA1274214A (en) * | 1984-03-16 | 1990-09-18 | Richard H. Clasen | Substrates coated with metal, simi-metal or carbon by plasma vapor |
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| CN103361768A (en) * | 2012-03-30 | 2013-10-23 | 上海斯瑞聚合体科技有限公司 | Surface modification method of polyacrylonitrile-based carbon fiber |
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| CN206448088U (en) * | 2016-08-31 | 2017-08-29 | 南京苏曼等离子科技有限公司 | Normal atmosphere low temperature plasma continuous tow arrangement in fibre process |
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2022
- 2022-05-25 CN CN202210574530.1A patent/CN114960176B/en active Active
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| CA1274214A (en) * | 1984-03-16 | 1990-09-18 | Richard H. Clasen | Substrates coated with metal, simi-metal or carbon by plasma vapor |
| CN102505190A (en) * | 2011-10-27 | 2012-06-20 | 北京化工大学 | Method for preparing high performance carbon fiber by controlling tensile force |
| CN103361768A (en) * | 2012-03-30 | 2013-10-23 | 上海斯瑞聚合体科技有限公司 | Surface modification method of polyacrylonitrile-based carbon fiber |
| CN104032565A (en) * | 2014-06-16 | 2014-09-10 | 西安交通大学 | Microwave ultrasonic co-processing type chemical surface modification method and microwave ultrasonic co-processing type chemical surface modification device for carbon fiber |
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