CN106638006A - Liquid spray electrotherapy room treated by coating carbon fibers and coating system thereof - Google Patents
Liquid spray electrotherapy room treated by coating carbon fibers and coating system thereof Download PDFInfo
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- CN106638006A CN106638006A CN201610984971.3A CN201610984971A CN106638006A CN 106638006 A CN106638006 A CN 106638006A CN 201610984971 A CN201610984971 A CN 201610984971A CN 106638006 A CN106638006 A CN 106638006A
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- Prior art keywords
- liquid mist
- carbon fiber
- room
- electrostatic
- fabric
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0084—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments by electrical processes, e.g. potentials, corona discharge, electrophoresis, electrolytic
Abstract
The invention relates to a liquid spray electrotherapy room treated by coating carbon fibers and a coating system thereof. The coating system is composed of a de-coiling device, a guiding device, a flattening device, a liquid spray electrotherapy room, an electrostatic coating room, a melting furnace, an adjusting device, an electrostatic device, a resin content test system, a traction device, a coiling device, a powder device, a control system and a compressed air source. A presoaked fabric passes by the liquid spray electrotherapy room with liquid spray electricity and then passes by the coating room with the electrostatic resin powder, so that the two sides of the presoaked fabric are coated with the resin powder; the fabric is flattened by the melting furnace under high temperature, and then the resin is adhered to the presoaked fabric; in order to uniformly and flatly soak, an X-ray instrument and a computer are adopted for detecting and controlling in the whole soaking process, so as to guarantee the controllable increasing of the soaked resin content of the fabric and meet the requirement of the manufacturing for 1000mm wide high-quality pre-coated fabric. The device is suitable for solvent-free thermosetting resin and thermoplastic resin.
Description
Technical field
The present invention relates to a kind of be used for carbon fiber coating processing field.
Background technology
A series of research of preimpregnation equipment and process has been carried out in preparation around thermoplastic resin prepreg in recent years,
Including melt impregnation, solution impregnation, fiber impregnation, powder infusion, Suspension, electrostatic impregnating, they are all different degrees of
On there is the suitable solvent of shortage, resin heated time is long, removes moisture content and emulsifying agent is more difficult, and proofing layer surface is uneven
It is smooth to wait not enough.Fluidized bed immersion technique disclosed in HOII P IIM861464 uses Fen end proofing, and it is to utilize resin
Deposition of the powder on pre-soaking fiber and attachment and obtain prepreg.But, it equally exists toner attachment inequality,
The deficiency that prepreg resin content precision is restricted.
The content of the invention
It is an object of the present invention to provide a kind of using liquid mist electricity electrostatic powder proofing so that prepreg appearance uniform is smooth,
Without resin-rich area and resin starved region, fiber is parallel to each other, the stable electricity preliminary dip treatment equipment of resin content and process, solves one
Thermoplastic resin prepreg manufacture difficulty, high cost, prepreg fabric width cannot meet the problem of use requirement since straight.
The technical solution of the present invention is, before carbon fiber fabric enters into coating room, at a liquid mist electricity
Reason so that carbon fibre material improves the quantity of electric charge under same homalographic through Electrostatic Treatment, and causes the electric charge of carbon fiber fabric
Polarity and the opposite polarity of coating powders, consolidate to increase up to prepreg resin content raising and fabric width, during resin prepreg
It is bonding with immersed carrier firmly, electrostatic pressure parameter, meet use demand.
A kind of carbon fiber application system based on liquid mist process is provided, described carbon fiber application system includes decoiling equipment
1st, multiple guide rollers 2, liquid mist conveying device 4, gasing pump 5, control system 6, liquid mist electricity room 7, electrostatic coating room 8, melting furnace 9,
Electrostatic generator 10, wrap-up 11, speed adjusting device 12 and draw-gear 14；Carbon after the described uncoiling of decoiling equipment 1
Fiber cloth imports liquid mist electricity room 7 by guide roller 2, and the carbon fiber fabric behind liquid mist electricity room 7 enters electrostatic coating room 8, Jing
The carbon fiber fabric for crossing electrostatic coating room 8 enters melting furnace 9, and afterwards carbon fiber fabric imports linear velocity and adjusts dress by guide roller 2
12 are put, the carbon fiber fabric after the speed governing of linear velocity adjusting means 12 imports to wrap-up 11 and received by draw-gear 14
Volume；
Described liquid mist electricity room 7 is body structure, and the above and below of described body structure is provided with gap, described carbon
Fiber cloth can be entered in body structure from following gap, and is derived from gap above；In described body structure
Two pieces of discharge electrodes are provided with, two pieces of discharge electrodes are symmetrical arranged relative to the carbon fiber fabric in casing；
Described discharge electrode includes insulated substrate and discharge cell, and described discharge cell is multiple, described electric discharge list
Unit is discharge head or spray point, and the discharge head or spray point are adapted with electrostatic generator, and multiple discharge cells are uniformly arranged
On insulated substrate, and electrostatic generator interface is provided with the side of insulated substrate, all of discharge cell is all connected to
Electrostatic generator interface；Multiple through holes are also provided with described insulated substrate；
Air inlet and liquid mist mouth, described liquid mist conveying device 4 are also provided with below described liquid mist electricity room 7 body structure
Liquid mist is passed through by liquid mist electricity room 7 from the liquid mist mouth by pipeline；Described gasing pump 5 is led to gas from air inlet by pipeline
Enter liquid mist electricity room 7；Described gas and liquid mist is blown in described carbon fiber fabric by the through hole on insulated substrate；
Wherein, the electrostatic charge and the electrostatic charge opposite polarity in powder coating room 8 in described liquid mist electricity room 7.
Further, described multiple discharge cells are arranged in the one side of insulated substrate or through insulated substrate two sides.
Further, described also to include flattening roller group 3, described flattening roller group is used for carbon fiber fabric and enters liquid mist electricity
Flattening before room 7 is processed.
Further, it is provided with resin amount detecting device between described linear velocity adjusting means 12 and draw-gear 14
13。
Further, described speed adjusting device 12 is used to adjust the transfer rate of carbon fiber fabric.
Further, draw-gear 14 is opposed roller.
Further, described resin amount detecting device 13 is x-ray instrument.
Simultaneously the invention provides a kind of liquid mist electricity room for carbon fiber coating processing, it is characterised in that：Described liquid
Mist electricity room 7 is body structure, and the above and below of described body structure is provided with gap, and gap above enters for carbon fiber fabric
Mouthful, gap above is carbon fiber fabric outlet；Two pieces of discharge electrodes, two pieces of discharge electrode phases are provided with described body structure
For the carbon fiber fabric in casing is symmetrical arranged；
Described discharge electrode includes insulated substrate and discharge cell, and described discharge cell is multiple, described electric discharge list
Unit is discharge head or spray point, and the discharge head or spray point are adapted with electrostatic generator, and multiple discharge cells are uniformly arranged
On insulated substrate, and electrostatic generator interface is provided with the side of insulated substrate, all of discharge cell is all connected to
Electrostatic generator interface；Multiple through holes are also provided with described insulated substrate；
Air inlet and liquid mist mouth are also provided with below described liquid mist electricity room 7 body structure, described air inlet is used to lead to
Enter gas, described liquid mist mouth is used to be input into liquid mist.
Further, the electrostatic charge of described discharge electrode can be positive pole, or negative pole.
To prepreg fabric using liquid mist electricity and electrostatic powder dual coating, interior is provided with battery lead plate, compressed air to coating room
Import, electrostatic room, the operating voltage of coating room are 0-120 kilovolts.Wrap-up is ensured using the software feature of alternating current torque motor
Tension force and linear velocity substantially constant in wrapup procedure, contain photoelectric error correction device in wrap-up, to adjust roller is batched
Displacement.Resin content test equipment has an x-ray instrument, using the x-ray source of fixed dosage through the pre- of different resins content
The absorbed number of leaching material, and the respective change of signal is shown on the screen of control system, when resin content is beyond predetermined
During scope, control signal, control liquid mist conveying device 4, gasing pump 5 and electrostatic generator 10 are sent by control system, and
To change resin content.Certainly the content of control resin also wants governing speed, winding quality, uncoiling tension, melting furnace temperature fortune
The technological parameters such as row correction, liquid mist electricity and atomizing pressure.
It is an advantage of the invention that：Bian liquid mists electricity high-voltage electrostatic field make toner powered and dual coating x-ray instrument and
The closed loop automatic control system that computer is formed causes that the resin content of prepreg is uniform, fluctuation range is little, surfacing, is combined
Material property high conversion rate, solvent-free recovery problem, it is adaptable to which cloth width connects less than 1000mm, thickness 0.06mm-0.45mm, length
Continuous fabric, resin content is controllable in 10%-65%, and precision is ± 3%, and powder size is 5 μ -200 μ.
Description of the drawings
The liquid mist electricity static electricity preliminary dip treatment equipment of Fig. 1 present invention and process schematic flow sheet；
Fig. 2 is the liquid mist electricity cell structure schematic diagram of the present invention；
Fig. 3 is the discharge electrode front view of the present invention；
Wherein：Many guide rollers of 1- decoiling equipments, 2-, 3- flattening roller groups, 4- liquid mist conveying devices, 5- gasing pumps, 6- controls
System processed, 7- liquid mists electricity room, 8- electrostatic coatings room, 9- melting furnaces, 10- electrostatic generators, 11- wrap-ups, 12- speed are adjusted
Device, 13- resin amount detecting devices, 14- draw-gears, 15- discharge electrodes, 16- air inlets, 17- liquid mist mouths.
Specific embodiment
Referring to accompanying drawing 1-2, a kind of carbon fiber application system based on liquid mist process, described carbon fiber coating are specifically provided
System includes decoiling equipment 1, multiple guide rollers 2, liquid mist conveying device 4, gasing pump 5, control system 6, liquid mist electricity room 7, electrostatic
Coating room 8, melting furnace 9, electrostatic generator 10, wrap-up 11, speed adjusting device 12 and draw-gear 14；Described uncoiling
Carbon fiber fabric after the uncoiling of device 1 imports liquid mist electricity room 7 by guide roller 2, and the carbon fiber fabric behind liquid mist electricity room 7 is entered
Electrostatic coating room 8, the carbon fiber fabric through electrostatic coating room 8 enters melting furnace 9, and afterwards carbon fiber fabric is led by guide roller 2
Enter linear velocity adjusting means 12, the carbon fiber fabric after the speed governing of linear velocity adjusting means 12 imports to receipts by draw-gear 14
Winding apparatus 11 are wound；
Described liquid mist electricity room 7 is body structure, and the above and below of described body structure is provided with gap, described carbon
Fiber cloth can be entered in body structure from following gap, and is derived from gap above；In described body structure
Two pieces of discharge electrodes are provided with, two pieces of discharge electrodes are symmetrical arranged relative to the carbon fiber fabric in casing；
Described discharge electrode 15 includes insulated substrate and discharge cell, and described discharge cell is multiple, described electric discharge
Unit is discharge head or spray point, and the discharge head or spray point are adapted with electrostatic generator, and multiple discharge cells uniformly set
Put on insulated substrate, and electrostatic generator interface is provided with the side of insulated substrate, all of discharge cell is all connected with
To electrostatic generator interface；Multiple through holes are also provided with described insulated substrate；
Air inlet 16 and liquid mist mouth 17, described liquid mist conveying are also provided with below described liquid mist electricity room 7 body structure
Liquid mist is passed through liquid mist electricity room 7 by device 4 by pipeline from the liquid mist mouth；Described gasing pump 5 is by pipeline by gas from entering
Gas port is passed through liquid mist electricity room 7；Described gas and liquid mist is blown in described carbon fiber fabric by the through hole on insulated substrate；
Wherein, the electrostatic charge and the electrostatic charge opposite polarity in powder coating room 8 in described liquid mist electricity room 7.
Further, described multiple discharge cells are arranged in the one side of insulated substrate or through insulated substrate two sides.
Further, described also to include flattening roller group 3, described flattening roller group is used for carbon fiber fabric and enters liquid mist electricity
Flattening before room 7 is processed.
Further, it is provided with resin amount detecting device between described linear velocity adjusting means 12 and draw-gear 14
13。
Further, described speed adjusting device 12 is used to adjust the transfer rate of carbon fiber fabric.
Further, draw-gear 14 is opposed roller.
Further, described resin amount detecting device 13 is x-ray instrument.
During work, fiber weaving cloth is wrapped on decoiling equipment 1, after start, prepreg fabric is along guide roller 2 and flattening roller group
3 are introduced into liquid mist electricity room 7, and (coating room 8 is conventional carbon fiber powder coating room, such as including pressure to enter back into electrostatic coating room 8
Contracting air intlet and battery lead plate, powder materials room and fluid bed)；Electrostatic charge in described liquid mist electricity room 7 is coated with powder
Electrostatic charge opposite polarity in room 8；Control system 6 (such as industrial control computer) control liquid mist conveying device 4 and gas transmission
The work of pump 5, in addition, the work of electrostatic generator 10 can also be controlled by control system 6, certain electrostatic generator is preferably
Independent control, i.e., controlled manually by operating personnel.Due to liquid mist of the present invention electricity increase, in prepreg process without powder overflow and
Spread, revolutionize the winged phenomenon of resin houseful in front invention prepreg process, while many resins have been saved, the electrostatic electricity of applying
Pressure is operated in 0-120 kilovolts of scope.With the increase of electrostatic potential, be conducive to toner powered, knit so as to improve preimpregnation
The resin content of thing, to adapt to the requirement of different materials and resin content prepreg fabric.
Apply in coating room 8 after being covered with powder, prepreg fabric enters melting furnace 9, and the temperature of melting furnace 9 can be at 0-600 DEG C
Between adjust, to meet the thermosetting resin of different melting points and the requirement of thermoplastic resin.Fully melt in resin, viscosity is suitable to
Prepreg fabric is as short as possible by the time of stove on the premise of Infusion entails, to reduce the possibility of resin decomposition, can pass through
Adjust linear velocity and change furnace length to meet.Fabric Jing guide rollers 2, linear velocity adjusting means 12, traction that dipping is completed
Roller 14 and wrap-up 11 wind.Resin amount detecting device 13 is provided between on-line velocity adjusting means 12 and carry-over pinch rolls 14
(particularly resin amount detecting device adopts x-ray instrument), is changed over using the security of Co 60 and tested using x-ray instrument
How much absorbed the little weakness of area, the x-ray source using fixed dosage is through the prepreg of different resins content, and micro-
The relative change of signal is shown on computer screen.With the change of resin content, feedback signal is the change of electric current, is referred to
Too high levels, the electric current reacted by x-ray instrument is reduced, and executing agency starts working, and reduces liquid mist electricity, atomization air pressure, with
The practical resin content of making reduce, vice versa.Ensure that the prepreg resin content effective control of 1000mm fabric widths.
The work of control system 6 (such as industrial control computer) control liquid mist conveying device 4 and gasing pump 5, in addition, quiet
The work of electric generator 10 can also be controlled by control system 6, and certain electrostatic generator is preferably independent control, i.e., by operating
Personnel control manually, after the test data of x-ray instrument is obtained in whole dipping process, just provide instruction to liquid mist electricity room 7, quiet
Resin content in electrocoat room 8 is carried out and automatically controlled, in good time to photoelectric error correction device, the uncoiling in linear velocity, wrap-up
The technological parameters such as tension force, melt temperature and atomizing pressure are controlled.Due to the effect of liquid mist electricity room 7, the resin in coating room 8
There is recovery without scattering, not and utilizing in powder.
Before into liquid mist electricity room 7 and coating room 8, compressed air-source is strictly purified air, with except degreasing and water
Part.Air pressure must be stablized, and be in uniformly fluidized state to keep toner.
In addition, coating room 8 is conventional carbon fiber powder coating room, such as including compressed air inlet and battery lead plate, powder
End material room and fluid bed)；The work of control system 6 (such as industrial control computer) control liquid mist conveying device 4 and gasing pump 5
Make, in addition, the work of electrostatic generator 10 can also be controlled by control system 6, certain electrostatic generator is preferably independent control
System, i.e., controlled manually by operating personnel.Due to the increase of liquid mist of the present invention electricity, overflow and spread without powder in prepreg process, it is thorough
Bottom changes the winged phenomenon of resin houseful in front invention prepreg process, while many resins have been saved, the electrostatic potential work of applying
Make the scope at 0-120 kilovolts.With the increase of electrostatic potential, be conducive to toner powered, so as to improve prepreg fabric
Resin content, to adapt to the requirement of different materials and resin content prepreg fabric.
Apply in coating room 8 after being covered with powder, prepreg fabric enters melting furnace 9, and the temperature of melting furnace 9 can be at 0-600 DEG C
Between adjust, to meet the thermosetting resin of different melting points and the requirement of thermoplastic resin.Fully melt in resin, viscosity is suitable to
Prepreg fabric is as short as possible by the time of stove on the premise of Infusion entails, to reduce the possibility of resin decomposition, can pass through
Adjust linear velocity and change furnace length to meet.Fabric Jing guide rollers 2, linear velocity adjusting means 12, traction that dipping is completed
Roller 14 and wrap-up 11 wind.Resin amount detecting device 13 is provided between speed adjusting device 12 and carry-over pinch rolls 14 (special
Be not that resin amount detecting device adopts x-ray instrument), using x-ray instrument change over using Co 60 security and tested surface
How much absorbed the little weakness of product, the x-ray source using fixed dosage is through the prepreg of different resins content, and in micro- meter
The relative change of signal is shown on calculation machine screen.With the change of resin content, feedback signal is the change of electric current, refers to and contains
Amount is too high, and the electric current reacted by x-ray instrument is reduced, and executing agency starts working, and reduces liquid mist electricity, atomization air pressure, therewith
Reduce practical resin content, vice versa.Ensure that the prepreg resin content effective control of 1000mm fabric widths.
Claims (9)
1. a kind of carbon fiber application system based on liquid mist process, described carbon fiber application system includes decoiling equipment (1), many
Individual guide roller (2), liquid mist conveying device (4), gasing pump (5), control system (6), liquid mist electricity room (7), electrostatic coating room (8),
Melting furnace (9), electrostatic generator (10), wrap-up (11), speed adjusting device (12) and draw-gear (14)；Described opens
Carbon fiber fabric after winding apparatus (1) uncoiling imports liquid mist electricity room (7) by guide roller (2), and the carbon after liquid mist electricity room (7) is fine
Dimension cloth enters electrostatic coating room (8), and the carbon fiber fabric through electrostatic coating room (8) enters melting furnace (9), afterwards carbon fiber
Cloth is by guide roller (2) lead-in wire speed adjusting device (12), the carbon cloth after linear velocity adjusting means (12) speed governing
Material imports to wrap-up (11) and is wound by draw-gear (14)；
Described liquid mist electricity room (7) is body structure, and the above and below of described body structure is provided with gap, and described carbon is fine
Dimension cloth can be entered in body structure from following gap, and is derived from gap above；Set in described body structure
Two pieces of discharge electrodes are equipped with, two pieces of discharge electrodes are symmetrical arranged relative to the carbon fiber fabric in casing；
Described discharge electrode includes insulated substrate and discharge cell, and described discharge cell is multiple, and described discharge cell is
Discharge head or spray point, the discharge head or spray point are adapted with electrostatic generator, and multiple discharge cells are uniformly arranged on absolutely
On edge substrate, and electrostatic generator interface is provided with the side of insulated substrate, all of discharge cell is all connected to electrostatic
G-interface；Multiple through holes are also provided with described insulated substrate；
Air inlet and liquid mist mouth, described liquid mist conveying device (4) are also provided with below described liquid mist electricity room (7) body structure
Liquid mist is passed through by liquid mist electricity room (7) from the liquid mist mouth by pipeline；Described gasing pump (5) is by pipeline by gas from air inlet
Mouth is passed through liquid mist electricity room (7)；Described gas and liquid mist is blown in described carbon fiber fabric by the through hole on insulated substrate；
Wherein, the electrostatic charge and the electrostatic charge opposite polarity in powder coating room (8) in described liquid mist electricity room (7).
2. it is according to claim 1 it is a kind of based on liquid mist process carbon fiber application system, it is characterised in that：Described is more
Individual discharge cell is arranged in the one side of insulated substrate or through insulated substrate two sides.
3. it is according to claim 1 it is a kind of based on liquid mist process carbon fiber application system, it is characterised in that：Described goes back
Including flattening roller group (3), described flattening roller group is used for the flattening process that carbon fiber fabric is entered before liquid mist electricity room (7).
4. it is according to claim 1 it is a kind of based on liquid mist process carbon fiber application system, it is characterised in that：Described
Resin amount detecting device 13 is provided between linear velocity adjusting means (12) and draw-gear (14).
5. it is according to claim 1 it is a kind of based on liquid mist process carbon fiber application system, it is characterised in that：Described speed
Adjusting means (12) is spent for adjusting the transfer rate of carbon fiber fabric.
6. it is according to claim 1 it is a kind of based on liquid mist process carbon fiber application system, it is characterised in that：Draw-gear
(14) it is opposed roller.
7. it is according to claim 1 it is a kind of based on liquid mist process carbon fiber application system, it is characterised in that：Described tree
Fat amount detecting device (13) is x-ray instrument.
8. a kind of liquid mist electricity room for carbon fiber coating processing, it is characterised in that：Described liquid mist electricity room (7) is casing knot
Structure, the above and below of described body structure is provided with gap, and gap above is carbon fiber fabric entrance, and gap above is
Carbon fiber fabric is exported；Two pieces of discharge electrodes are provided with described body structure, two pieces of discharge electrodes are relative to the carbon in casing
Fiber cloth is symmetrical arranged；
Described discharge electrode includes insulated substrate and discharge cell, and described discharge cell is multiple, and described discharge cell is
Discharge head or spray point, the discharge head or spray point are adapted with electrostatic generator, and multiple discharge cells are uniformly arranged on absolutely
On edge substrate, and electrostatic generator interface is provided with the side of insulated substrate, all of discharge cell is all connected to electrostatic
G-interface；Multiple through holes are also provided with described insulated substrate；
Air inlet and liquid mist mouth are also provided with below described liquid mist electricity room (7) body structure, described air inlet is used to be passed through
Gas, described liquid mist mouth is used to be input into liquid mist.
9. a kind of liquid mist electricity room for carbon fiber coating processing according to claim 8, it is characterised in that：Described puts
The electrostatic charge of electroplax is negative or positive electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610984971.3A CN106638006A (en) | 2016-11-09 | 2016-11-09 | Liquid spray electrotherapy room treated by coating carbon fibers and coating system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610984971.3A CN106638006A (en) | 2016-11-09 | 2016-11-09 | Liquid spray electrotherapy room treated by coating carbon fibers and coating system thereof |
Publications (1)
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| CN106638006A true CN106638006A (en) | 2017-05-10 |
Family
ID=58806036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610984971.3A Pending CN106638006A (en) | 2016-11-09 | 2016-11-09 | Liquid spray electrotherapy room treated by coating carbon fibers and coating system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468852A (en) * | 2017-09-08 | 2019-03-15 | 比亚迪股份有限公司 | A kind of preparation method of fiber prepreg material, fiber prepreg plate and fiber prepreg material |
| CN113882162A (en) * | 2021-10-14 | 2022-01-04 | 南通全技纺织涂层有限公司 | Back seepage prevention mechanism in functional fabric processing process |
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| CN109468852A (en) * | 2017-09-08 | 2019-03-15 | 比亚迪股份有限公司 | A kind of preparation method of fiber prepreg material, fiber prepreg plate and fiber prepreg material |
| CN113882162A (en) * | 2021-10-14 | 2022-01-04 | 南通全技纺织涂层有限公司 | Back seepage prevention mechanism in functional fabric processing process |
| CN113882162B (en) * | 2021-10-14 | 2023-07-04 | 南通全技纺织涂层有限公司 | Back seepage preventing mechanism in functional fabric processing process |
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Application publication date: 20170510 |