CN108486692B - High-strength high-modulus carbon fiber processing method and system - Google Patents
High-strength high-modulus carbon fiber processing method and system Download PDFInfo
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- CN108486692B CN108486692B CN201810339670.4A CN201810339670A CN108486692B CN 108486692 B CN108486692 B CN 108486692B CN 201810339670 A CN201810339670 A CN 201810339670A CN 108486692 B CN108486692 B CN 108486692B
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- carbon fiber
- modulus carbon
- strength high
- thermal drying
- oxidizing
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 70
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 70
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000003672 processing method Methods 0.000 title abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 39
- 239000000835 fiber Substances 0.000 claims abstract description 38
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 34
- 238000005406 washing Methods 0.000 claims abstract description 33
- 230000003647 oxidation Effects 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000004381 surface treatment Methods 0.000 claims abstract description 19
- 230000001590 oxidative effect Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005502 peroxidation Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 230000004913 activation Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Classifications
-
- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/10—Chemical after-treatment of artificial filaments or the like during manufacture of carbon
- D01F11/12—Chemical after-treatment of artificial filaments or the like during manufacture of carbon with inorganic substances ; Intercalation
- D01F11/122—Oxygen, oxygen-generating compounds
-
- 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
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/10—Chemical after-treatment of artificial filaments or the like during manufacture of carbon
- D01F11/16—Chemical after-treatment of artificial filaments or the like during manufacture of carbon by physicochemical methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
Abstract
The utility model discloses a treatment system of high-strength high-modulus carbon fibers, which comprises a surface treatment device, a washing device and a thermal drying-oxidizing device which are connected in sequence; the thermal drying-oxidizing device consists of a thermal drying system and an oxidizing system, wherein the thermal drying system comprises a protective insulation box, a light source and an exhaust channel; the oxidation system comprises an oxidizing atmosphere reactor, an auxiliary light source and a protective box. The utility model also discloses a processing method of the high-strength high-modulus carbon fiber, which comprises the following steps: (1) Continuously passing the high-strength high-modulus carbon fiber tows through a surface treatment device to oxidize the fiber surfaces; (2) A water washing device is adopted to wash the surface of the high-strength high-modulus carbon fiber; (3) And (5) carrying out thermal drying-oxidation on the high-strength high-modulus carbon fiber tows subjected to water washing, and collecting the tows. The method disclosed by the utility model is simple to operate, strong in controllability and low in energy consumption, and can realize secondary activation of the carbon fiber surface on the basis of realizing continuous, rapid and efficient drying of the high-strength high-modulus carbon fiber.
Description
Technical Field
The utility model belongs to the technical field of carbon fiber production, and particularly relates to a method and a system for processing high-strength high-modulus carbon fibers.
Background
The high-strength high-modulus carbon fiber is prepared by graphitizing at 2000-3000 ℃, and the surface of the fiber is extremely inert, so that the surface of the fiber needs to be treated to improve the surface activity of the fiber. At present, the surface treatment methods of carbon fibers are more, particularly, solution oxidation such as anodic oxidation is used in a majority, and solution remains after the surface oxidation treatment, so that the residual solvent on the surface of the fibers needs to be removed by washing treatment, and then washing and drying are performed, so that the subsequent sizing process is facilitated.
The most common method for washing and drying the surface of the carbon fiber is to perform drying treatment by a blast drying furnace, for example, a drying device after washing the carbon fiber by hot air is disclosed in the Chinese patent publication No. CN 102645091A. However, for the high-strength high-modulus carbon fiber, because the fiber presents extremely high brittleness, surface filaments are easy to form due to tension drawing and other reasons in the production process, if the fiber surface filaments are extremely easy to be aggravated by adopting a hot air drying mode in the water washing and drying process, and the mechanical properties of the fiber are further affected.
In addition, the chinese patent publication No. CN107385735a discloses a system for washing, drying, sizing and drying and shaping carbon fibers, and a hot roll contact type drying method is adopted, and although the method can rapidly achieve carbon fiber drying, the surface of the fiber is in thermal contact with the hot roll, so that active groups generated on the surface of the carbon fiber after surface treatment are damaged, the surface activity of the fiber is reduced, and the surface treatment is meaningless.
The ultraviolet drying device for carbon fiber products disclosed in the chinese patent publication No. CN201122045Y proposes a heating method using ultraviolet light or infrared light, but is essentially different from the present utility model in the following two points: firstly, the application fields are different, and the patent aims at baking ultraviolet coating on a product by utilizing an infrared lamp tube and an ultraviolet lamp tube for carbon fiber products; secondly, the device has different structures and larger energy consumption difference, the patent needs to bake the surface of the carbon fiber, so the baking needs to be performed at extremely high temperature, the energy consumption of the device is higher, the equipment is complex, for example, an air supply system is needed to cool the device in time in the device, the utility model is simple and easy to implement, and the quick drying of the carbon fiber can be realized under the conditions of visible light and the like.
Disclosure of Invention
Aiming at the defects of the prior art and combining the structure and performance characteristics of the high-strength high-modulus carbon fiber, the utility model designs a method and a system for treating the high-strength high-modulus carbon fiber.
The utility model is realized by the following technical scheme:
a processing system of high-strength high-modulus carbon fiber comprises a surface processing device, a water washing device and a thermal drying-oxidizing device which are connected in sequence;
the thermal drying-oxidizing device consists of a thermal drying system and an oxidizing system, wherein the thermal drying system comprises a protective insulation box, a light source and an exhaust channel; the oxidation system comprises an oxidizing atmosphere reactor, an auxiliary light source and a protective box.
The surface treatment device is used for carrying out oxidation treatment on the surface of the high-strength high-modulus carbon fiber, so that the surface activity is improved; the surface treatment device is a liquid phase oxidation device or an anodic oxidation device and can be arranged into one, two or more channels according to the requirement.
The water washing device is used for washing the surface of the high-strength high-modulus carbon fiber, and removing the residual solution on the surface of the fiber.
The water washing device can be arranged into one channel, two channels or multiple channels according to the requirement.
The thermal drying-oxidizing device utilizes a uniform thermal field of a thermal drying system in the device to realize high-efficiency and rapid drying treatment of the surface of the high-strength and high-modulus carbon fiber, and then utilizes an oxidizing system to carry out surface secondary oxidation.
The light source includes one or more of visible light, infrared light, and ultraviolet light. By arranging one or more light sources, a thermal field with uniform temperature is formed in the device by utilizing light energy, and the surface of the high-strength high-modulus carbon fiber is dried by utilizing the thermal diffusion effect. Because the internal thermal field of the device is uniform, no air flow can be generated, thereby avoiding the generation of high-strength high-modulus carbon fiber filaments, and the high-strength high-modulus carbon fiber filaments are not in direct contact with the fiber surface, so that the fiber surface still presents higher activity after surface treatment.
The auxiliary light source is ultraviolet light and/or infrared light, and on one hand, the auxiliary light source forms a thermal field with uniform temperature, so that the oxidation efficiency of the oxidation system is improved; on the other hand, the surface of the fiber is oxidized by the catalytic oxidizing atmosphere to realize the secondary activation of the surface, thereby greatly improving the combination of the high-strength high-modulus carbon fiber and the matrix and greatly improving the surface activity of the fiber.
The utility model also provides a processing method of the high-strength high-modulus carbon fiber, which comprises the following steps:
(1) Continuously passing the high-strength high-modulus carbon fiber tows through a surface treatment device to oxidize the fiber surfaces;
(2) Washing the surface of the high-strength high-modulus carbon fiber by adopting a washing device to remove the residual solution on the surface of the fiber;
(3) And (5) carrying out thermal drying-oxidation on the high-strength high-modulus carbon fiber tows subjected to water washing, and collecting the tows.
In the step (1), the surface of the fiber is subjected to oxidation treatment by adopting a solution treatment mode, such as liquid phase oxidation, anodic oxidation and the like.
In the step (2), the surface of the high-strength high-modulus carbon fiber is washed by adopting one or more of a spraying method, an immersion method and a water film method.
In step (3), it includes: the high-strength high-modulus carbon fiber tows after water washing are heated for 1 to 5 minutes at the temperature of between 50 and 120 ℃ through a thermal drying system in a thermal drying-oxidizing device; then the mixture is fed into a peroxidation system, the oxidation time is 1-3 min, and the oxidation temperature is 80-150 ℃.
In summary, the utility model has the following beneficial effects:
(1) In the thermal drying system of the thermal drying-oxidizing device, the light energy heating method is adopted to carry out the drying treatment after washing the high-strength high-modulus carbon fiber, so that the drying treatment is carried out in a uniform thermal field in the device, and continuous, rapid and efficient drying of the high-strength high-modulus carbon fiber can be realized while the generation of broken filaments on the surface of the fiber is effectively avoided; in the oxidation system, the surface of the fiber is oxidized by oxidizing atmosphere to realize the secondary activation of the surface, thereby greatly improving the combination of the high-strength high-modulus carbon fiber and the matrix.
(2) The device is simple and easy to operate, has strong controllability and low energy consumption, can simultaneously realize the water washing and drying and secondary activation of the fiber surface, and can obviously improve the fiber surface activity while effectively saving energy.
Drawings
FIG. 1 is a schematic diagram of a processing system for high strength, high modulus carbon fibers in accordance with an embodiment of the present utility model;
FIG. 2 is surface element analysis data before the treatment of the high-strength and high-modulus carbon fiber according to the embodiment of the utility model;
FIG. 3 is the surface element analysis data of the high-strength and high-modulus carbon fiber subjected to surface treatment and water washing according to the embodiment of the utility model;
fig. 4 is surface element analysis data of a high-strength and high-modulus carbon fiber after complete processing according to an embodiment of the present utility model.
Detailed Description
The following detailed description of specific embodiments of the utility model is further described in conjunction with the accompanying drawings and examples, but it should be understood that the following examples are intended to illustrate the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1, the embodiment of the utility model provides a processing system of high-strength high-modulus carbon fiber, which comprises a surface processing device 3, a water washing device 8 and a thermal drying-oxidizing device which are connected in sequence;
the thermal drying-oxidizing device consists of a thermal drying system and an oxidizing system, wherein the thermal drying system comprises a protective insulation box 10, a light source 11 and an exhaust channel 12; the oxidizing system comprises an oxidizing atmosphere reactor 14, an auxiliary light source 15 and a protective box 13, and the power supply of the thermal drying-oxidizing device is controlled by a power switch 16.
The embodiment of the utility model also provides a processing method of the high-strength high-modulus carbon fiber, which comprises the following steps:
(1) The high-strength high-modulus carbon fiber tows 1 enter the surface treatment device 3 through the conductive roller 2, direct current is introduced into the conductive roller 2 and the conductive roller 6, and the carbon fibers are used as anodes and graphite plates 5 are used as cathodes due to the conductive performance of the carbon fibers, so that continuous anodic oxidation treatment is carried out on the surfaces of the carbon fibers, and the activation of the surfaces of the carbon fibers is realized.
(2) After surface treatment, the high-strength high-modulus carbon fiber tows enter a water washing device 8 through a rolling roller 7, and the fibers are soaked and washed by deionized water, so that electrolyte solution remained on the surfaces of the fibers is removed.
(3) After the water washing is finished, the fiber enters a thermal drying system of a thermal drying-oxidizing device through a rolling roller 9, a light source 11 is controlled by a power supply 16, a thermal field with uniform temperature can be formed in a protective insulation box 10 through effective regulation and control of light source power, light source quantity and the like, the fiber surface is dried through the thermal diffusion effect, continuous and rapid drying of the carbon fiber surface is realized, and in order to ensure timely removal of water vapor in the drying process, exhaust channels 12 are arranged on two sides of the light source. The air and other gases enter an oxidizing atmosphere generator 14 to form oxidizing atmosphere through physical and chemical reactions, then the oxidizing atmosphere enters an oxidizing system of a thermal drying-oxidizing device through a gas channel, and the dried fibers enter an oxidizing system protective box 13 to oxidize the surfaces of the fibers under the action of an auxiliary light source 15.
As shown in fig. 1, the surface treatment device 3 and the washing device 8 may be composed of one, two or more devices; preferably, the surface treatment device 3 of the present embodiment is composed of one piece, and the washing device 8 is composed of one piece.
The light source 11 in the thermal drying system of the thermal drying-oxidizing device can be provided with different numbers of light lamps, the shape of the light lamps can also be square, arc-shaped and the like, and the light lamps can be different light sources such as visible light, ultraviolet light, infrared light and the like; as a preferred scheme, the light source 11 is a visible light source, 4 arc light sources in total are distributed on the upper side and the lower side of the fiber tows, 2 arc light sources are arranged on each side, and the high-strength high-modulus carbon fiber tows after water washing are heated for 1min at 110 ℃ in a thermal drying system.
The auxiliary light source 15 of the oxidation system of the thermal drying-oxidation device is one or a mixture of ultraviolet light and infrared light. As a preferred scheme, the auxiliary light source 15 takes ultraviolet light as a light source, 2 square light sources are distributed on the upper side and the lower side of the fiber tows in the oxidation system, and the dried fibers are oxidized for 1min at 150 ℃ in the oxidation system.
Fig. 2, fig. 3 and fig. 4 are respectively surface element analysis data of the high-strength and high-modulus carbon fiber before surface treatment, after surface treatment and water washing treatment and after secondary oxidation, wherein the content of O element before surface treatment is only 1.67%, the content of O element is improved to 4.10% after anodic oxidation treatment, and the content of O element can be improved to 10.58% after secondary oxidation of an oxidation system of a thermal drying-oxidation device, so that the surface activity of the fiber is greatly improved.
The utility model forms a uniform thermal field in the thermal drying system of the thermal drying-oxidizing device, and does not generate airflow, so that the surface of the carbon fiber is not generated with fuzzing, and the thermal contact with the surface of the fiber in the drying process is avoided, so that the activity of the fiber can be maintained in the drying process of the surface of the fiber, thereby realizing continuous, rapid and efficient drying of the carbon fiber; in the oxidation system, the bonding capability of the high-strength high-modulus carbon fiber and the matrix can be greatly improved by using an oxidizing atmosphere such as ozone and the like to perform secondary activation on the surface of the fiber.
The foregoing has shown and described only the basic principles, main features and advantages of the utility model. The present embodiment is intended to illustrate the technical solution of the present utility model, but not to limit the technical solution of the present utility model, and other modifications and equivalent substitutions made by those skilled in the art to the technical solution of the present utility model should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (6)
1. The processing system of the high-strength high-modulus carbon fiber is characterized by comprising a surface processing device, a water washing device and a thermal drying-oxidizing device which are connected in sequence;
the thermal drying-oxidizing device consists of a thermal drying system and an oxidizing system, wherein the thermal drying system comprises a protective insulation box, a light source and an exhaust channel; the oxidation system comprises an oxidizing atmosphere reactor, an auxiliary light source and a protective box;
the light source comprises one or more of visible light, infrared light and ultraviolet light;
the auxiliary light source is ultraviolet light and/or infrared light.
2. The system of claim 1, wherein the surface treatment device is a liquid phase oxidation device or an anodic oxidation device.
3. The high-strength high-modulus carbon fiber processing system according to claim 2, wherein the surface processing device is provided in one, two or more ways.
4. The high-strength high-modulus carbon fiber processing system according to claim 1, wherein the water washing device is provided in one, two or more channels.
5. A method for treating a high-strength high-modulus carbon fiber, comprising the steps of:
(1) Continuously passing the high-strength high-modulus carbon fiber tows through a surface treatment device to oxidize the fiber surfaces;
(2) Washing the surface of the high-strength high-modulus carbon fiber by adopting a washing device to remove the residual solution on the surface of the fiber;
(3) The high-strength high-modulus carbon fiber tows after water washing are subjected to a thermal drying-oxidizing device and silk collection, thus obtaining the high-strength high-modulus carbon fiber tows;
in step (3), it includes: the high-strength high-modulus carbon fiber tows after water washing are heated for 1 to 5 minutes at the temperature of between 50 and 120 ℃ through a thermal drying system in a thermal drying-oxidizing device; then the mixture is fed into a peroxidation system, the oxidation time is 1-3 min, and the oxidation temperature is 80-150 ℃.
6. The method according to claim 5, wherein in the step (2), the surface of the high-strength high-modulus carbon fiber is washed with water by one or more of a spray method, an immersion method and a water film method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810339670.4A CN108486692B (en) | 2018-04-16 | 2018-04-16 | High-strength high-modulus carbon fiber processing method and system |
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| CN201810339670.4A CN108486692B (en) | 2018-04-16 | 2018-04-16 | High-strength high-modulus carbon fiber processing method and system |
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| CN108486692B true CN108486692B (en) | 2024-01-02 |
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| CN113048739B (en) * | 2021-03-12 | 2022-12-16 | 国网湖北省电力有限公司黄冈供电公司 | Improve weaving processing of sunning efficiency to fabrics and use sunning frame |
| CN113502566B (en) * | 2021-09-08 | 2021-12-03 | 江苏美得妮纺织品有限公司 | Carbon fiber precursor pre-oxidation device and use method thereof |
| CN114182453B (en) * | 2021-12-22 | 2023-12-05 | 张家港市港鹰实业有限公司 | Carbon fiber surface treatment device and application method thereof |
| CN114250562B (en) * | 2021-12-28 | 2024-01-02 | 张家港市港鹰实业有限公司 | Improved carbon fiber precursor water washing device and method |
| CN114775262B (en) * | 2022-04-22 | 2023-07-21 | 常州爱特恩新材料科技有限公司 | Carbon fiber treatment method and system |
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| JPH0544155A (en) * | 1991-08-06 | 1993-02-23 | Petoca:Kk | Surface treatment of carbon fiber |
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| JPH0931841A (en) * | 1995-07-17 | 1997-02-04 | Mitsubishi Rayon Co Ltd | Surface treatment of carbon fiber |
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