CN220846313U - Overflow type surface treatment device for carbon fiber and carbon wire - Google Patents
Overflow type surface treatment device for carbon fiber and carbon wire Download PDFInfo
- Publication number
- CN220846313U CN220846313U CN202321213245.3U CN202321213245U CN220846313U CN 220846313 U CN220846313 U CN 220846313U CN 202321213245 U CN202321213245 U CN 202321213245U CN 220846313 U CN220846313 U CN 220846313U
- Authority
- CN
- China
- Prior art keywords
- overflow
- carbon fiber
- godet
- carbon
- surface treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 60
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000004381 surface treatment Methods 0.000 title claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 12
- 239000011203 carbon fibre reinforced carbon Substances 0.000 title claims description 4
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 18
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 abstract description 15
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 230000007246 mechanism Effects 0.000 abstract description 5
- 206010003549 asthenia Diseases 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000002166 wet spinning Methods 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The utility model provides a be used for carbon fiber carbon silk overflow formula surface treatment device, including electrolysis trough, negative plate and two positive pole godet, the both ends of electrolysis trough are equipped with the overflow mouth, and the lower edge of two overflow mouthfuls sets up with the altitude, forms the overflow liquid level between two overflow mouthfuls, and the carbon fiber silk bundle passes by above-mentioned two overflow mouthfuls and immerses and carry out surface electrolysis by below the overflow liquid level, through the height of the carbon fiber silk bundle of regulation business turn over electrolysis trough and electrolyte overflow liquid level for the continuous operation under the liquid level of electrode tank is immersed in the condition of no deflector roll in the electrolysis trough to the carbon fiber silk bundle of being handled, thereby realizes the anodic oxidation treatment on carbon fiber surface. Because there is no guide roller in the electrolytic bath, the friction of the godet to the carbon fiber is reduced, the possibility of the strength loss of the carbon fiber is reduced, the possibility that the internal mechanism of the godet is corroded by the electrolyte is avoided, and the service life of the equipment is greatly prolonged.
Description
Technical Field
The utility model relates to steam generating equipment, in particular to an overflow type surface treatment device for carbon fiber carbon filaments.
Background
The carbon fiber is a novel carbon material with carbon content of more than 93% prepared by high-temperature carbonization at 1300-1600 ℃. Due to carbonization treatment in high-temperature inert gas, the surface activity of the carbon-free carbon composite material is reduced, the surface tension is reduced, and the wettability with matrix resin is poor. In particular, the dry-jet wet spinning solution is discharged from the spinning hole, firstly passes through the air layer and then enters the coagulating bath for forming, under the action of uniaxial stress, the spinning trickle is stretched by high power to be fine denier, the expansion body of the trickle entering between the liquid surfaces of the coagulating bath is eliminated, and the surface of the fiber is smooth without groove wrinkles. Therefore, the fiber specific surface area of the precursor produced by the dry-jet wet spinning method is smaller after carbonization treatment. The smooth surface has poor anchoring effect with the matrix resin, so that the interlaminar shear strength (ILSS) of the composite material produced by using the carbon fiber is reduced, and the requirements of practical design cannot be met. The aim of the carbon fiber surface treatment is to change the lyophobic surface of the carbon fiber into lyophobic so as to improve the two-phase interface adhesion between the carbon fiber and matrix resin, thereby improving the interlaminar shear strength of the composite material. The shearing strength between layers of the carbon fiber which is not subjected to surface treatment is about 55-75 MPa, and the shearing strength can be improved to more than 90MPa after the surface treatment, so that the design requirement can be met. For the carbon fiber produced by wet spinning (the surface of the fiber is provided with grooves, such as T300), the effect of producing the composite material without surface treatment is not very great, but for the carbon fiber produced by dry-jet wet spinning, the surface is too smooth, the tensile strength is greatly improved, but if the surface treatment is not carried out, the interlaminar shear strength is too low, and when the composite material is produced, the interface between the carbon fiber and matrix resin is difficult to bond, so that the performance of the composite material is seriously affected. The anodic electrolytic oxidation method is one of the current carbon fiber surface treatment methods which are universal at home and abroad, and is also the best treatment method matched on line. The method has the advantages that: anodic oxidation is easy to control, and uniform oxidation of each monofilament can be realized; the oxidation is mild, the operation elasticity is high, a large amount of treatment is easy, the reduction degree of the tensile strength of the oxidized carbon fiber is controllable, and the carbon fiber is not damaged greatly; the treatment effect is remarkable, and the surface of the carbon fiber composite material is introduced with active functional groups containing oxygen, nitrogen and the like, so that the interlaminar shear strength of the carbon fiber composite material can be improved to more than 90MPa, and the design requirement is met.
The traditional online surface treatment equipment has two types of V-shaped and I-shaped. Wherein, one structural unit of the V-shaped electrolytic tank is to press the carbon fiber into the electrolyte solution through one guide roller, the cathode plate is parallel to the two sides of the carbon fiber, thus forming an electrolyte loop, and a plurality of groups of structural units form the industrial electrolytic tank according to the surface treatment requirement. The electrolytic tank in the form can obtain longer surface treatment residence time in a limited space, is favorable for realizing a treatment process requiring longer residence time, but has deep tank body, once broken wires are difficult to treat, bubbles generated by the two electrodes of the electrochemistry are difficult to rapidly discharge, the electrolytic reaction rate of the anode surface is easy to be blocked, and the modification effect is influenced. In addition, at least one guide roller is needed in the groove, and the guide roller material and the mechanism are all corrosion-resistant, otherwise, the guide roller is extremely easy to fail. The straight-line-shaped electrolytic tank presses carbon fibers into the electrolytic tank through the two guide rollers, the cathode plate is horizontally arranged at the bottom of the electrolytic tank in parallel with the carbon fibers, the horizontal structure reduces the required height of the liquid level, faults are easier to treat, bubbles generated by the two poles are easy to discharge, the required space is larger, and the guide rollers immersed in the liquid level are also arranged. Both of these electrolytic tanks contain guide rollers for pressing the carbon fibers into the liquid surface, and their corrosion resistance requirements increase the complexity of the materials and structures, and excessive guide rollers cause unnecessary damage to the carbon fibers during the production process.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the defects of the prior art, and provides an overflow type surface treatment device for carbon fiber and carbon fiber, which is used for reducing the strength loss of the carbon fiber, and has uniform surface treatment and stable circulation.
The technical problem to be solved by the utility model is realized by the following technical scheme that the overflow type surface treatment device for carbon fiber carbon wires comprises an electrolytic tank, a cathode plate and two anode wire guide rollers, wherein the cathode plate is arranged in the electrolytic tank, the two anode wire guide rollers are arranged at two ends of the electrolytic tank, and carbon fiber tows bypass the two anode wire guide rollers to serve as anodes for electrolytic surface treatment, and the overflow type surface treatment device is characterized in that: the two ends of the electrolytic tank are provided with overflow ports, the lower edges of the two overflow ports are arranged at equal heights, an overflow liquid level is formed between the two overflow ports, carbon fiber tows pass through the two overflow ports and are immersed below the overflow liquid level for surface electrolytic treatment, the two ends of the electrolytic tank are correspondingly provided with two overflow tanks, the two overflow tanks are communicated with a liquid storage tank through overflow pipes, the electrolytic tank is provided with a circulating liquid inlet, a liquid inlet pipeline is connected between the circulating liquid inlet and the liquid storage tank, and a circulating pump is arranged on the liquid inlet pipeline.
The technical problem to be solved by the utility model can be further solved by the following technical scheme that the liquid inlet pipeline is provided with the regulating valve.
The technical problem to be solved by the utility model can be further solved by the following technical scheme that the anode godet is a graphite roller, and the height of the anode godet is adjustable up and down.
Compared with the prior art, the utility model ensures that the treated carbon fiber tows are immersed under the liquid surface of the electrode tank to continuously run under the condition of no guide roller in the electrolytic tank by adjusting the height of the carbon fiber tows entering and exiting the electrolytic tank and the overflow liquid level of the electrolyte, and the conductive carbon fiber tows oxidize carbon atoms on the surface of the carbon fiber by utilizing nascent oxygen generated by OH-discharge to generate oxygen-containing functional groups so as to improve the interlaminar shear strength of the composite material. Thereby realizing the anodic oxidation treatment of the carbon fiber surface. Because there is no guide roller in the electrolytic bath, the friction of the godet to the carbon fiber is reduced, the possibility of the strength loss of the carbon fiber is reduced, the possibility that the internal mechanism of the godet is corroded by the electrolyte is avoided, and the service life of the equipment is greatly prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of the overflow electrolytic portion.
Detailed Description
The following further describes the specific technical solutions of the present invention, so that the purpose, technical solutions and advantages of the embodiments of the present invention will be more apparent to those skilled in the art to further understand the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments, but not limitations on the claims thereof. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The utility model provides a be used for carbon fiber carbon silk overflow formula surface treatment device, which comprises an electrolytic bath, negative plate and two positive pole godet, the negative plate sets up in the electrolysis trough, two positive pole godet settings are at the electrolysis trough both ends, two positive pole godet are bypassed as electrolysis surface treatment's positive pole to the carbon fiber silk bundle, the both ends of electrolysis trough are equipped with the overflow mouth, the lower edge of two overflow mouths is high setting such as, form the overflow liquid level between two overflow mouths, the carbon fiber silk bundle passes by above-mentioned two overflow mouths and immerses and carry out surface electrolysis below the overflow liquid level, the both ends of electrolysis trough are provided with two overflow troughs corresponding with the liquid flow mouth, two overflow troughs all communicate with the liquid storage groove through overflow pipe, the electrolysis trough is equipped with circulation inlet, be connected with the feed liquor pipeline between circulation inlet and the liquid storage groove, be equipped with the circulating pump on the above-mentioned feed liquor pipeline.
The liquid inlet pipeline is provided with a regulating valve. The anode godet is a graphite roller 3, and the height of the anode godet is adjustable up and down. Specifically, a vertical guide groove is formed, bearing blocks are additionally arranged at two end shafts of the graphite roller, the bearing blocks are slidably arranged in the guide groove, and an adjusting screw rod structure is arranged at the bottom of the guide groove. Other adjusting mechanisms for realizing the up-down height of the graphite roller, such as an oil cylinder instead of an adjusting screw rod, and the like, are also possible within the protection scope of the application.
In particular, the device is made of RPVC (hard polyvinyl chloride) plates into an electrolytic tank, which is corrosion-resistant and insulating. An electrolytic cell 4 and two overflow tanks 2. The inlet and outlet ends of the electrolytic tank are respectively provided with a graphite roller 3 with adjustable height, which can not only play the role of a guide wire but also serve as an anode. The cathode plate 5 is a stainless steel plate, is placed in the electrolytic tank 4, and is applied with direct current to the cathode plate 5 through the binding post 7 by a direct current power supply, and the applied direct current is below a safe voltage (36V) through a carbon brush and a collecting ring. The electrolyte injected into the electrolytic tank is regulated by a regulating valve 6 on a circulating pipeline, so that the liquid level is about 2-5 mm higher than the upper surface of the overflow partition board, the height of a graphite roller is regulated, the treated carbon fiber tows 1 can continuously run in the electrolyte between the overflow surface of the electrolyte and the upper surface of the lower edge of the overflow port, and the conductive carbon fiber tows 1 oxidize carbon atoms on the surface of the carbon fibers by utilizing nascent oxygen generated by OH-discharge to generate oxygen-containing functional groups so as to improve the interlaminar shear strength of the composite material. Electrolyte overflows to the overflow tank 2 and then enters the liquid storage tank 8, and then enters the cathode tank 4 through the regulating valve 6 by the circulating pump to complete circulation.
The required point is as follows:
1) In the two-stage anodic oxidation electrolysis system, the electrolysis time is 20S, and the maximum current intensity can reach 600A.
2) The carbon fiber tows are driven by two graphite rollers with adjustable heights, which are in and out of the two ends of the electrolytic tank, to pass through the electrolytic tank, and the carbon fibers can be immersed under the liquid level of the electrode tank through the height difference between the overflow liquid level of the electrode tank and the upper edge surface of the overflow port, and the two ends of the graphite rollers and the bottom of the negative plate are electrified, so that an electrolytic loop is formed.
3) The most compact and shortest surface treatment system. Compared with the traditional multi-groove, deep-groove and multi-roller carbon fiber surface treatment equipment, the full length of the equipment is less than 2.5 meters, the groove depth is less than 100mm, and the applied voltage is low, the voltage gradient is small, the operation is stable and safe, and the uniformity of the quality of the carbon fiber after anodic oxidation can be ensured. In addition, the capacity of electrolyte required by the shallow groove is small, stable circulation is facilitated, the discharge speed of bubbles in the electrolyte solution is accelerated, and the air inflation degree of the electrolyte solution is reduced. Because there is no guide roller in the electrolytic bath, the friction of the guide roller to the carbon fiber is reduced, the possibility of the strength loss of the carbon fiber is reduced, the possibility that the internal mechanism of the guide roller is corroded by electrolyte is avoided, and the service life of the equipment can be prolonged.
4) The simplest pipeline and control system. The circulating liquid storage tank is arranged below the main machine of the electrolytic tank, so that the occupied area of equipment is reduced, and the length of a return pipeline can be shortened. The electrolyte is filtered and recycled, and the concentration and the temperature are regulated to ensure uniform surface treatment.
5) The method can be used for adjusting the indexes such as electrolyte concentration, current density, electrolyte temperature, the distance between the filament surface and the upper surface of the electrolyte, and the like, and fully meets the process route requirements.
Claims (3)
1. The utility model provides a be used for carbon fiber carbon silk overflow formula surface treatment device, includes electrolysis trough, negative plate and two positive pole godet, and the negative plate sets up in the electrolysis trough, and two positive pole godet settings are at the electrolysis trough both ends, and two positive pole godet are as electrolysis surface treatment's positive pole, its characterized in that are walked around to the carbon fiber silk bundle: the two ends of the electrolytic tank are provided with overflow ports, the lower edges of the two overflow ports are arranged at equal heights, an overflow liquid level is formed between the two overflow ports, carbon fiber tows pass through the two overflow ports and are immersed below the overflow liquid level for surface electrolytic treatment, the two ends of the electrolytic tank are correspondingly provided with two overflow tanks, the two overflow tanks are communicated with a liquid storage tank through overflow pipes, the electrolytic tank is provided with a circulating liquid inlet, a liquid inlet pipeline is connected between the circulating liquid inlet and the liquid storage tank, and a circulating pump is arranged on the liquid inlet pipeline.
2. The overflow surface treatment device for carbon fiber and carbon filament according to claim 1, wherein: the liquid inlet pipeline is provided with a regulating valve.
3. The overflow surface treatment device for carbon fiber and carbon filament according to claim 1, wherein: the anode godet is a graphite roller, and the height of the anode godet is adjustable up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321213245.3U CN220846313U (en) | 2023-05-19 | 2023-05-19 | Overflow type surface treatment device for carbon fiber and carbon wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321213245.3U CN220846313U (en) | 2023-05-19 | 2023-05-19 | Overflow type surface treatment device for carbon fiber and carbon wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220846313U true CN220846313U (en) | 2024-04-26 |
Family
ID=90784793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321213245.3U Active CN220846313U (en) | 2023-05-19 | 2023-05-19 | Overflow type surface treatment device for carbon fiber and carbon wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220846313U (en) |
-
2023
- 2023-05-19 CN CN202321213245.3U patent/CN220846313U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017162155A1 (en) | Method for continuously preparing graphene oxide nanoplatelet | |
| US4234398A (en) | Carbon fiber surface treatment | |
| CN101824742B (en) | Surface processing method and device of moderate and high strength carbon fibre | |
| CN104332640A (en) | Preparation method of thermally-reduced graphene oxide/nano carbon fiber composite electrode for full-vanadium flow battery | |
| CN105484012B (en) | A kind of polyacrylonitrile carbon fiber surface treatment method and device | |
| CN111793857A (en) | Carbon fiber surface treatment method | |
| CN220846313U (en) | Overflow type surface treatment device for carbon fiber and carbon wire | |
| CN209210955U (en) | High modulus carbon fiber surface processing device | |
| CN109161947A (en) | High modulus carbon fiber surface treatment method and device and its application | |
| CN201520917U (en) | Continuous carbon fiber after-treatment device | |
| CN205873976U (en) | Electric catalytic oxidation reaction unit who contains many react unit | |
| JP2016044383A (en) | Carbon fiber bundle | |
| CN114086386B (en) | Surface treatment method for dry-jet wet-spinning high-modulus carbon fiber | |
| CN112746299A (en) | Surface treatment method for carbon fiber carbon filaments | |
| CN109167082B (en) | Electrode for vanadium cell and vanadium cell | |
| CN101418480A (en) | Carbon fibre surface processor | |
| JP2009242971A (en) | Carbon fiber having excellent compression strength and method for producing the same | |
| CN210117426U (en) | Continuous electrolysis equipment for reducing copper sulfate concentration in plating solution | |
| CN213417102U (en) | Carbon fiber precursor carbonization electrolytic tank | |
| CN112708945B (en) | Coagulation bath for wet spinning and coagulation forming method of polyacrylonitrile spinning solution | |
| CN216765400U (en) | Carbon fiber surface treatment device | |
| CN110416554A (en) | A kind of method of modifying of vanadium redox flow battery electrode carbon felt | |
| CN113026351A (en) | Preparation method of carbon nanotube metal composite conductive fiber, product and application thereof | |
| CN217203006U (en) | Carbonization line surface treatment electrolytic bath | |
| CN2346800Y (en) | Electrochemical means for treating continuous electroconductive fibre |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |