CN112575575A - Hole expanding method for activated carbon fiber - Google Patents
Hole expanding method for activated carbon fiber Download PDFInfo
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- CN112575575A CN112575575A CN202010703910.1A CN202010703910A CN112575575A CN 112575575 A CN112575575 A CN 112575575A CN 202010703910 A CN202010703910 A CN 202010703910A CN 112575575 A CN112575575 A CN 112575575A
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- Prior art keywords
- activated carbon
- carbon fiber
- cleaning
- drying
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 52
- 238000001035 drying Methods 0.000 claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000004048 modification Effects 0.000 claims abstract description 20
- 238000012986 modification Methods 0.000 claims abstract description 20
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 12
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000002791 soaking Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 3
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 3
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229960001927 cetylpyridinium chloride Drugs 0.000 claims description 3
- YMKDRGPMQRFJGP-UHFFFAOYSA-M cetylpyridinium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 YMKDRGPMQRFJGP-UHFFFAOYSA-M 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 229960004887 ferric hydroxide Drugs 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 claims description 3
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 claims description 3
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 3
- 229920000136 polysorbate Polymers 0.000 claims description 3
- 229940083575 sodium dodecyl sulfate Drugs 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 claims description 3
- 229910021511 zinc hydroxide Inorganic materials 0.000 claims description 3
- 229940007718 zinc hydroxide Drugs 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/49—Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic Table; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
- D06M11/59—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with ammonia; with complexes of organic amines with inorganic substances
- D06M11/60—Ammonia as a gas or in solution
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
- D06M13/256—Sulfonated compounds esters thereof, e.g. sultones
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/244—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus
- D06M13/248—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
- D06M13/262—Sulfated compounds thiosulfates
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/35—Heterocyclic compounds
- D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Fibers (AREA)
- Carbon And Carbon Compounds (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a hole expanding method of activated carbon fibers, which comprises the following steps: A. removing impurities: sending the activated carbon fiber into an electrostatic impurity removal box for surface impurity removal treatment; B. cleaning for the first time: the activated carbon fiber after impurity removal is sent into a cleaning box for cleaning treatment; C. drying for the first time: feeding the cleaned activated carbon fiber into a drying box for drying treatment; D. first modification: and placing the dried activated carbon fiber in magnesium powder for reaction for 30-70min, wherein the reaction temperature is 900-1300 ℃. According to the invention, the activated carbon fiber is firstly modified in magnesium powder, secondly modified by high-temperature ammonia gas and nitrogen gas in a tubular furnace, and finally, is soaked in a surfactant and then is modified for the third time in a mixed gas of nitrogen gas, water vapor and carbon dioxide, so that the hole expanding effect of the activated carbon fiber can be effectively improved, and the overall strength of the activated carbon fiber is not influenced, thereby the market competitiveness of the activated carbon fiber is expanded, and the activated carbon fiber accords with the benefits of enterprises.
Description
Technical Field
The invention relates to the technical field of fibers, in particular to a hole expanding method of activated carbon fibers.
Background
The fiber is a substance consisting of continuous or discontinuous filaments, plays an important role in the aspect of a fiber system tissue in an animal body and a plant body, has wide fiber application, can be woven into fine threads, thread ends and hemp ropes, can be woven into a fiber layer in papermaking or felt weaving, is also commonly used for manufacturing other materials, and forms a composite material together with other materials.
Disclosure of Invention
The invention aims to provide a hole expanding method of activated carbon fibers, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the hole expanding method of the activated carbon fiber comprises the following steps:
A. removing impurities: sending the activated carbon fiber into an electrostatic impurity removal box for surface impurity removal treatment;
B. cleaning for the first time: the activated carbon fiber after impurity removal is sent into a cleaning box for cleaning treatment;
C. drying for the first time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
D. first modification: placing the dried activated carbon fiber in magnesium powder for reaction for 30-70min, wherein the reaction temperature is 900-1300 ℃;
E. and (3) cleaning for the second time: sending the modified activated carbon fiber into a cleaning box for cleaning;
F. and (5) drying for the second time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
G. and (3) second modification: placing the dried activated carbon fiber in a tubular furnace for high-temperature ammonia modification, then placing the modified activated carbon fiber in the tubular furnace, continuously heating to 300 ℃ at a certain heating rate under a nitrogen atmosphere, then switching to an ammonia atmosphere, continuously heating to 900-1100 ℃, and performing high-temperature modification at the temperature for 2-3 h;
H. and (3) cleaning for the third time: sending the modified activated carbon fiber into a cleaning box for cleaning;
I. and (3) drying for the third time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
J. soaking: soaking the dried activated carbon fiber in an ethanol solution, and adding hydroxide serving as a pore-expanding agent into the ethanol solution;
K. and (3) third modification: continuously soaking the soaked activated carbon fiber in a surfactant, heating for 2-4h under the protection of nitrogen at the temperature of 300-;
l, fourth cleaning: sending the activated carbon fiber modified for the third time into a cleaning box for cleaning treatment;
m, fourth drying: and (3) conveying the cleaned activated carbon fiber into a drying box for drying treatment to obtain the expanded activated carbon fiber.
Preferably, the cleaning solutions in steps B, F, H and L are plasma water, the cleaning modes are ultrasonic oscillation cleaning, the frequency of the ultrasonic wave is 60-80Hz, the oscillation time is 40-80min, the cleaning box is further provided with a heater, the heater is one of a high-frequency induction heater, an inner coil heater or an electrode heater, and the temperature of the heater is 50-70 ℃.
Preferably, the hydroxide in step J is one of ferric hydroxide, ferrous hydroxide, zinc hydroxide, magnesium hydroxide, cobalt hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide or lithium hydroxide.
Preferably, step G further comprises, before the nitrogen gas heating: the temperature is programmed to rise under the condition of continuous nitrogen introduction, and the temperature rise rate is set to be 10-20 ℃/min, and the calcination is carried out for 2.5-4h within the temperature range of 900-1100 ℃.
Preferably, the surfactant in step K is one of cetylpyridinium chloride, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, tween or span.
Preferably, the drying temperature in the steps C, F, I and M is 100-150 ℃, and the drying time is 60-90 min.
Preferably, the soaking temperature in the steps J and K is 80-100 ℃, the soaking time is 4-6h, and the stirring is carried out once every 30-60min, and each stirring is carried out for 2-4 min.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the activated carbon fiber is firstly modified in magnesium powder, secondly modified by high-temperature ammonia gas and nitrogen gas in a tubular furnace, and finally, is soaked in a surfactant and then is modified for the third time in a mixed gas of nitrogen gas, water vapor and carbon dioxide, so that the hole expanding effect of the activated carbon fiber can be effectively improved, and the overall strength of the activated carbon fiber is not influenced, thereby the market competitiveness of the activated carbon fiber is expanded, and the activated carbon fiber accords with the benefits of enterprises.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The hole expanding method of the activated carbon fiber comprises the following steps:
A. removing impurities: sending the activated carbon fiber into an electrostatic impurity removal box for surface impurity removal treatment;
B. cleaning for the first time: the activated carbon fiber after impurity removal is sent into a cleaning box for cleaning treatment;
C. drying for the first time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
D. first modification: placing the dried activated carbon fiber in magnesium powder for reaction for 30-70min, wherein the reaction temperature is 900-1300 ℃;
E. and (3) cleaning for the second time: sending the modified activated carbon fiber into a cleaning box for cleaning;
F. and (5) drying for the second time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
G. and (3) second modification: placing the dried activated carbon fiber in a tubular furnace for high-temperature ammonia modification, then placing the modified activated carbon fiber in the tubular furnace, continuously heating to 300 ℃ at a certain heating rate under a nitrogen atmosphere, then switching to an ammonia atmosphere, continuously heating to 900-1100 ℃, and performing high-temperature modification at the temperature for 2-3 h;
H. and (3) cleaning for the third time: sending the modified activated carbon fiber into a cleaning box for cleaning;
I. and (3) drying for the third time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
J. soaking: soaking the dried activated carbon fiber in an ethanol solution, and adding hydroxide serving as a pore-expanding agent into the ethanol solution;
K. and (3) third modification: continuously soaking the soaked activated carbon fiber in a surfactant, heating for 2-4h under the protection of nitrogen at the temperature of 300-;
l, fourth cleaning: sending the activated carbon fiber modified for the third time into a cleaning box for cleaning treatment;
m, fourth drying: and (3) conveying the cleaned activated carbon fiber into a drying box for drying treatment to obtain the expanded activated carbon fiber.
Carry out the first modification with activated carbon fiber in the magnesium powder, carry out high temperature ammonia and nitrogen gas in the tube furnace and carry out the second modification, carry out the third modification in the mist of nitrogen gas, vapor and carbon dioxide after soaking in surfactant active at last, can effectively improve activated carbon fiber's reaming effect, and do not exert an influence to activated carbon fiber's bulk strength to its market competition has been enlarged, the benefit that accords with enterprise self.
The cleaning liquid in steps B, F, H and L is plasma water, the cleaning mode is ultrasonic oscillation cleaning, the frequency of ultrasonic is 60-80Hz, the oscillation time is 40-80min, the cleaning box is also provided with a heater, the heater is one of a high-frequency induction heater, an inner coil heater or an electrode heater, and the temperature of the heater is 50-70 ℃.
The hydroxide in the step J is one of ferric hydroxide, ferrous hydroxide, zinc hydroxide, magnesium hydroxide, cobalt hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide or lithium hydroxide.
Step G also comprises nitrogen heating before: the temperature is programmed to rise under the condition of continuous nitrogen introduction, and the temperature rise rate is set to be 10-20 ℃/min, and the calcination is carried out for 2.5-4h within the temperature range of 900-1100 ℃.
The surfactant in the step K is one of cetylpyridinium chloride, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, tween or span.
The drying temperature in steps C, F, I and M is 100-150 ℃, and the drying time is 60-90 min.
The soaking temperature in the steps J and K is 80-100 ℃, the soaking time is 4-6h, and simultaneously, the stirring is carried out once at intervals of 30-60min, and each stirring time is 2-4 min.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The hole expanding method of the activated carbon fiber is characterized in that: the hole expanding method comprises the following steps:
A. removing impurities: sending the activated carbon fiber into an electrostatic impurity removal box for surface impurity removal treatment;
B. cleaning for the first time: the activated carbon fiber after impurity removal is sent into a cleaning box for cleaning treatment;
C. drying for the first time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
D. first modification: placing the dried activated carbon fiber in magnesium powder for reaction for 30-70min, wherein the reaction temperature is 900-1300 ℃;
E. and (3) cleaning for the second time: sending the modified activated carbon fiber into a cleaning box for cleaning;
F. and (5) drying for the second time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
G. and (3) second modification: placing the dried activated carbon fiber in a tubular furnace for high-temperature ammonia modification, then placing the modified activated carbon fiber in the tubular furnace, continuously heating to 300 ℃ at a certain heating rate under a nitrogen atmosphere, then switching to an ammonia atmosphere, continuously heating to 900-1100 ℃, and performing high-temperature modification at the temperature for 2-3 h;
H. and (3) cleaning for the third time: sending the modified activated carbon fiber into a cleaning box for cleaning;
I. and (3) drying for the third time: feeding the cleaned activated carbon fiber into a drying box for drying treatment;
J. soaking: soaking the dried activated carbon fiber in an ethanol solution, and adding hydroxide serving as a pore-expanding agent into the ethanol solution;
K. and (3) third modification: continuously soaking the soaked activated carbon fiber in a surfactant, heating for 2-4h under the protection of nitrogen at the temperature of 300-;
l, fourth cleaning: sending the activated carbon fiber modified for the third time into a cleaning box for cleaning treatment;
m, fourth drying: and (3) conveying the cleaned activated carbon fiber into a drying box for drying treatment to obtain the expanded activated carbon fiber.
2. The method of reaming an activated carbon fiber of claim 1, wherein: the cleaning liquid in the step B, F, H and the cleaning liquid in the step L are plasma water, the cleaning mode is ultrasonic oscillation cleaning, meanwhile, the frequency of the ultrasonic wave is 60-80Hz, the oscillation time is 40-80min, meanwhile, the cleaning box is also provided with a heater, the heater is one of a high-frequency induction heater, an inner coil heater or an electrode heater, and the temperature of the heater is 50-70 ℃.
3. The method of reaming an activated carbon fiber of claim 1, wherein: the hydroxide in the step J is one of ferric hydroxide, ferrous hydroxide, zinc hydroxide, magnesium hydroxide, cobalt hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide or lithium hydroxide.
4. The method of reaming an activated carbon fiber of claim 1, wherein: and G, nitrogen heating: the temperature is programmed to rise under the condition of continuous nitrogen introduction, and the temperature rise rate is set to be 10-20 ℃/min, and the calcination is carried out for 2.5-4h within the temperature range of 900-1100 ℃.
5. The method of reaming an activated carbon fiber of claim 1, wherein: and the surfactant in the step K is one of cetylpyridinium chloride, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, tween or span.
6. The method of reaming an activated carbon fiber of claim 1, wherein: the drying temperature in the steps C, F, I and M is both 100 ℃ and 150 ℃, and the drying time is both 60-90 min.
7. The method of reaming an activated carbon fiber of claim 1, wherein: the soaking temperature in the steps J and K is 80-100 ℃, the soaking time is 4-6h, and the stirring is carried out once every 30-60min, and each stirring time is 2-4 min.
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