CN117698220A - Strong reinforced composite carbon-based fiber felt and preparation method thereof - Google Patents
Strong reinforced composite carbon-based fiber felt and preparation method thereof Download PDFInfo
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- CN117698220A CN117698220A CN202311703439.6A CN202311703439A CN117698220A CN 117698220 A CN117698220 A CN 117698220A CN 202311703439 A CN202311703439 A CN 202311703439A CN 117698220 A CN117698220 A CN 117698220A
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- 239000000835 fiber Substances 0.000 title claims abstract description 117
- 239000002131 composite material Substances 0.000 title claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000004744 fabric Substances 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011261 inert gas Substances 0.000 claims abstract description 21
- 238000010000 carbonizing Methods 0.000 claims abstract description 8
- 230000003213 activating effect Effects 0.000 claims abstract description 7
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 16
- 229920000297 Rayon Polymers 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 8
- 238000003763 carbonization Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000010426 asphalt Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 25
- 229920000049 Carbon (fiber) Polymers 0.000 description 7
- 239000004917 carbon fiber Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920006282 Phenolic fiber Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
- B32B5/275—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one woven fabric layer next to a non-woven fabric layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/04—Carbonising or oxidising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Inorganic Fibers (AREA)
Abstract
The invention discloses a strong reinforced composite carbon-based fiber felt and a preparation method thereof, wherein the strong reinforced composite carbon-based fiber felt is a composite structure felt body with an upper layer and a lower layer of needled fiber felt and a layer of woven fiber cloth in the middle. Carbonizing or activating the composite felt body under the protection of inert gas to obtain the carbonized or activated carbon fiber felt with better strength. Because the strength of the woven fiber cloth is far higher than that of the needled fiber felt, the preparation method disclosed by the invention greatly improves the strength and the service life of the carbonized or activated felt, and is a novel carbonized or activated carbon fiber felt composite material with high strength performance.
Description
Technical Field
The invention relates to the technical field of carbon fibers, in particular to a strong reinforced composite carbon-based fiber felt and a preparation method thereof
Background
The activated carbon fiber is activated carbon fiber, certain carbon fiber (such as phenolic fiber, PAN fiber, viscose fiber, asphalt fiber and the like) is activated at high temperature (different activation temperatures) to generate nanoscale pore diameter on the surface of the carbon fiber, and the specific surface area is increased, so that the physicochemical characteristics of the carbon fiber are changed, the activated carbon fiber has large specific surface area (600-3000 m < 2 >/g) and abundant micropores, and the micropore volume accounts for more than 90% of the total pore volume. The active carbon fiber has larger adsorption capacity and faster adsorption kinetics than granular active carbon, has high adsorption efficiency on organic matters, anions and cations in liquid phase and gas phase, has high adsorption and desorption speed, can be recycled, is acid-resistant, alkali-resistant, high-temperature-resistant, strong in adaptability and good in conductivity and chemical stability, is an ideal environment-friendly material, can selectively adsorb pollutant in gas or aqueous solution, and has better regenerability after being used, so that ACF (active carbon fiber) and deep processing products thereof are widely applied to the field of environmental purification, and are widely applied to the aspects of purifying gas, water and organic solvent recovery at present.
When the manufactured activated carbon fiber is manufactured, the strength of the manufactured activated carbon fiber is lower than that of PAN-based pre-oxidized fiber cloth, so that the strength and the service life of the activated felt are improved, and the running cost is reduced, and the strong reinforced composite PAN-based activated carbon fiber felt and the preparation method thereof are required.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a strong reinforced composite carbon-based fiber felt and a preparation method thereof, and solves the technical problems that the strength of the existing needled felt is lower than that of PAN-based pre-oxidized fiber cloth, and the strength and the service life of an activated felt need to be improved.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a strong reinforced composite carbon-based fiber felt and a preparation method thereof are provided, wherein the strong reinforced composite carbon-based fiber felt is a composite structure felt body with an upper layer and a lower layer of needled fiber felt and a layer of woven fiber cloth in the middle. Carbonizing or activating the composite structure felt under the protection of inert gas to obtain carbonized or activated carbon fiber felt with better strength. Because the strength of the woven fiber cloth is far higher than that of the needled fiber felt, the preparation method disclosed by the invention greatly improves the strength and the service life of the carbonized or activated fiber felt, and is a novel carbonized or activated carbon fiber felt composite material with high strength performance.
Preferably, the upper layer and the lower layer of the composite structure felt body of the composite carbon-based fiber felt are needled fiber felt raw materials, and can be viscose-based, asphalt-based, phenolic-based or Polyacrylonitrile (PAN) -based fibers.
Preferably, the raw material of the woven fiber cloth in the middle of the composite structure felt body of the composite carbon-based fiber felt is the same as the raw material of the upper layer and the lower layer, and the raw material of the woven fiber cloth in the middle of the composite structure felt body of the composite carbon-based fiber felt can be chopped fibers or filament fibers, and the woven fiber cloth is prepared after spinning and weaving.
Preferably, the two layers of fiber mats and the middle layer of woven fiber cloth are processed into the composite structural mat body through needling.
Preferably, the inert gas is one or more than two mixed gases selected from nitrogen, helium and argon, and is used as a protective gas for protection.
Preferably, the composite structural felt body is carbonized under the protection of inert gas to obtain the strong reinforced composite carbonized fiber felt. The carbonized fiber felt can also be prepared into graphitized fiber felt by further high-temperature treatment.
Preferably, the composite structure felt body is activated under the protection of inert gas to prepare the strong reinforced composite activated fiber felt.
Preferably, the composite structural felt body and the composite felt body of the viscose-based raw material need to be subjected to pre-oxidation treatment to obtain a heat-resistant structure. The polyacrylonitrile base can directly perform pre-oxidation treatment on the fiber and then needle-punched the fiber into a felt body with a composite structure.
Preferably, the carbonized fiber felt is obtained by carbonization treatment in a carbonization furnace at the temperature of 800-1200 ℃ at the maximum under the protection of inert gas. And further processing the fiber felt in a graphitizing furnace at a high temperature of 1800-2600 ℃ to obtain the graphitized fiber felt.
Preferably, under the protection of inert gas, adding the activated carbon fiber felt obtained by performing activation treatment in an atmosphere containing carbon dioxide or water vapor or a combination of the two while performing high-temperature carbonization process at the temperature of 800-1200 ℃ at the maximum in an activation furnace.
Advantageous effects
The invention provides a strong reinforced composite carbon-based fiber felt and a preparation method thereof. And carbonizing and activating the composite felt under the protection of inert gas to obtain the activated carbon fiber felt with better strength. Because the strength of PAN-based pre-oxidized fiber cloth is far higher than that of the needled felt, the preparation method disclosed by the invention greatly improves the strength and the service life of the activated felt, and simultaneously reduces the running cost, thereby being a novel active carbon fiber felt composite material with high strength performance.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. 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 invention provides a technical scheme that: a strong reinforced composite carbon-based fiber felt and a preparation method thereof are provided, wherein the strong reinforced composite carbon-based fiber felt is a composite structure felt body with an upper layer and a lower layer of needled fiber felt and a layer of woven fiber cloth in the middle. Carbonizing or activating the composite felt body under the protection of inert gas to obtain the carbonized or activated carbon fiber felt with better strength. Because the strength of the woven fiber cloth is far higher than that of the needled fiber felt, the preparation method disclosed by the invention greatly improves the strength and the service life of the carbonized or activated fiber felt, and is a novel carbonized or activated carbon fiber felt composite material with high strength performance.
The embodiment is further configured that the upper layer and the lower layer of the composite structure felt body of the composite carbon-based fiber felt are made of needled fiber felt raw materials, and the needled fiber felt raw materials can be viscose-based, asphalt-based, phenolic-based or Polyacrylonitrile (PAN) -based fibers.
The embodiment is further configured that the raw material correspondence of a layer of woven fiber cloth in the middle of the composite structure felt body of the composite carbon-based fiber felt is the same as the raw material of the upper layer and the lower layer.
The embodiment is further configured that the raw material of the woven fiber cloth in the middle of the composite structure felt body of the composite carbon-based fiber felt can be chopped fibers or filament fibers, the woven fiber cloth is manufactured after spinning and weaving, and the two-layer fiber felt and the middle one-layer woven fiber cloth are processed into the composite structure felt body through needling.
The embodiment is further configured that the composite structural felt body is carbonized under the protection of inert gas to obtain the strong reinforced composite carbonized fiber felt. The carbonized fiber felt can also be prepared into graphitized fiber felt by further high-temperature treatment.
The embodiment is further configured that the strong reinforced composite activated fiber felt is prepared by activating the composite structure felt under the protection of inert gas.
The embodiment further provides that the composite structural felt body and the composite felt body of the viscose-based raw material need to be subjected to pre-oxidation treatment to obtain a heat-resistant structure. The polyacrylonitrile base can directly perform pre-oxidation treatment on the fiber and then needle-punched the fiber into a felt body with a composite structure.
The embodiment is further configured to obtain the carbonized fiber felt through carbonization treatment in a carbonization furnace at the temperature of 800-1200 ℃ at the maximum under the protection of inert gas. And further processing the fiber felt in a graphitizing furnace at a high temperature of 1800-2600 ℃ to obtain the graphitized fiber felt.
The embodiment is further configured that the activated carbon fiber felt obtained by performing the activation treatment under the atmosphere containing carbon dioxide or water vapor or the combination of the two is added while the high-temperature carbonization process is performed at the temperature of 800-1200 ℃ at the maximum in the activation furnace under the protection of inert gas.
The present embodiment is further configured such that the inert gas is one or a mixture of two or more of nitrogen, helium, and argon, and the inert gas is used as a shielding gas.
The detailed connection means are known in the art, and the following mainly describes the working principle and process, and the specific work is as follows.
Example 1: the viscose-based flame-retardant short fiber was prepared, and a part of the fiber was needled into 2 parts of a felt having a thickness of 8mm, and a part of the fiber was spun into a cloth having a thickness of about 1 mm. Cutting the felt and cloth into a uniform width, and then needling and compounding the two layers of fiber felt and the middle layer of machine-made cloth into a composite felt with the thickness of 15 mm. The viscose-based flame-retardant short fibers were also directly needled into a single-layer fiber mat with a layer thickness of 15mm as a control. Then the two are respectively subjected to pre-oxidation treatment at the temperature of up to about 300 ℃ under the same process conditions. The two kinds of mats after the pre-oxidation treatment are subjected to carbonization treatment (1000 ℃) and graphitization treatment (2000 ℃) respectively according to the same process conditions, and the strength detection results are shown in the following table:
as can be seen from the above table, the tensile strength of the composite felt is significantly improved, whether it is carbonized or graphitized.
Example 2 PAN-based pre-oxidized filaments were prepared, after crimping and cutting, one part was needled into 2 parts of a mat having a thickness of 4mm, and the other part was spun into a pre-oxidized yarn cloth having a thickness of 1 mm. Cutting the felt and cloth into uniform widths, and then needling and compounding the two layers of fiber felt and the middle layer of machine-made cloth into a compound felt with the thickness of 5.2 mm. Meanwhile, the crimped and cut PAN-based pre-oxidized filaments were directly needled into a single-layer fiber mat with a layer thickness of 5.2mm as a control. Then, the two kinds of felts are respectively activated by introducing water vapor under the same process conditions (1000 ℃), and the intensity of each felt is detected after the activation, and the detection results are shown in the following table:
as can be seen from the above table, the tensile strength of the compounded activated felt is greatly improved by about 2.75 times in the warp direction and about 2.86 times in the weft direction.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Claims (10)
1. A strong reinforced composite carbon-based fiber felt and a preparation method thereof are characterized in that the strong reinforced composite carbon-based fiber felt is a composite structure felt body with an upper layer and a lower layer of needled fiber felts and a layer of woven fiber cloth in the middle. Carbonizing or activating the composite felt body under the protection of inert gas to obtain the carbonized or activated carbon fiber felt with better strength. Because the strength of the woven fiber cloth is far higher than that of the needled fiber felt, the preparation method disclosed by the invention greatly improves the strength and the service life of the carbonized or activated fiber felt, and is a novel carbonized or activated carbon fiber felt composite material with high strength performance.
2. The strong reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 1, wherein the upper and lower layers of the composite structure mat body are needle punched fiber mat raw materials which can be viscose-based, asphalt-based, phenolic-based or Polyacrylonitrile (PAN) -based fibers.
3. The strong reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 1, wherein the raw material of the middle woven fiber cloth of the composite structure mat body is the same as the raw material of the upper and lower layers, and the raw material of the middle woven fiber cloth of the composite structure mat body can be chopped fibers or filament fibers, and the woven fiber cloth is prepared after spinning and weaving.
4. The strong reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 1, wherein the composite structural mat is formed by processing a two-layer fiber mat and a middle one-layer woven fiber cloth into the composite structural mat by needling.
5. The strong reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 1, wherein the strong reinforced composite carbon-based fiber mat is prepared by carbonizing a composite structure mat body under the protection of inert gas. The carbonized fiber felt can also be prepared into graphitized fiber felt by further high-temperature treatment.
6. The strong reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 1, wherein the strong reinforced composite activated fiber mat is prepared by activating the composite structure mat body under the protection of inert gas.
7. The strong reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 2, wherein the composite structural mat body of the viscose-based raw material is subjected to pre-oxidation treatment to obtain a heat-resistant structure. The polyacrylonitrile base can directly perform pre-oxidation treatment on the fiber and then needle-punched the fiber into a felt body with a composite structure.
8. The reinforced composite carbon-based fiber mat and the preparation method thereof according to claim 1, wherein the inert gas can be one or more than two mixed gases selected from nitrogen, helium and argon as a protective gas.
9. The strong reinforced composite carbonized fiber felt and graphitized fiber felt and the preparation method thereof according to claim 5, wherein the carbonized fiber felt is obtained by carbonizing at a temperature of 800-1200 ℃ at most in a carbonizing furnace under the protection of inert gas. And further processing the fiber felt in a graphitizing furnace at a high temperature of 1800-2600 ℃ to obtain the graphitized fiber felt.
10. The reinforced composite activated fiber felt and the preparation method thereof according to claim 6, wherein the activated carbon fiber felt is obtained by adding carbon dioxide or water vapor or a combination atmosphere of the carbon dioxide and the water vapor for activation treatment in an activation furnace under the protection of inert gas at the same time of the high-temperature carbonization process at the temperature of 800-1200 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311703439.6A CN117698220A (en) | 2023-12-13 | 2023-12-13 | Strong reinforced composite carbon-based fiber felt and preparation method thereof |
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| CN202311703439.6A CN117698220A (en) | 2023-12-13 | 2023-12-13 | Strong reinforced composite carbon-based fiber felt and preparation method thereof |
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