CN104233903B - Activated carbon fiber paper and preparation method thereof - Google Patents
Activated carbon fiber paper and preparation method thereof Download PDFInfo
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- CN104233903B CN104233903B CN201410457111.5A CN201410457111A CN104233903B CN 104233903 B CN104233903 B CN 104233903B CN 201410457111 A CN201410457111 A CN 201410457111A CN 104233903 B CN104233903 B CN 104233903B
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Abstract
The invention discloses activated carbon fiber paper and a preparation method thereof. The activated carbon fiber paper adopts aramid fibrids as carriers, and the carriers are loaded with activated carbon fibers, wherein the lengths of the activated carbon fibers are within 1-8mm, and the aramid fibrids account for 10-50% of the activated carbon fiber paper in oven-dry mass. Compared with traditional activated carbon fiber paper, the prepared activated carbon fiber paper has the high adsorptive property and high strength.
Description
Technical field
The present invention relates to a kind of filter paper and in particular to a kind of employing NACF as filtering material filter paper.
Background technology
Activated carbon（Activated Carbon, AC）It is a kind of flourishing porous functional material of pore structure, using work
Property charcoal characteristic preparation activated carbon filter paper, then be a kind of functional filter material, can be used for air and water purification and army
The fields such as thing chemical protection, have wide market prospects.Activated carbon filter paper great majority common on the market at present are to plant
Fibres paper pulp, as carrier, is formed being manufactured paper with pulp using paper machine in active carbon powder addition paper pulp, its filtration mechanism is paper
In activated carbon grain there is loose structure, specific surface area is very big, has very strong adsorption capacity to some components in gas,
Can optionally adsorb from the air, separate poisonous and hazardous gas.Fibre pulp in activated carbon filter paper is then activated carbon
Carrier and paper feeding so that the intensity of filtration pressure difference can be born, also constitute certain resistance simultaneously.Therefore high efficiency active carbon filter paper
Feature should be that amounts of activated carbon is many, and fibre pulp consumption is few, and both ratios need to equilibrate to into the existing high adsorption filtration efficiency of paper, and
There are enough use intensities.But active carbon powder consumption is usually present filter paper insufficient strength and easily in practical application when more
The problem of dry linting, and reduce active carbon powder consumption and increase fibre pulp consumption, filter paper adsorption filtration efficiency can be led to drop again
Low and can not meet use requirement, both are difficult to balance.
Content of the invention
The invention aims to defect present in solution prior art, one kind is provided to have higher-strength and preferably concurrently
The fibrous paper of absorption property.
In order to achieve the above object, the invention provides a kind of active carbon fiber paper, with aramid fiber fibrid（Aramid fiber precipitating
Spacing employing meta or para position aramid fiber fibrid, preferably meta-aramid fibre fibrid）For carrier, supported active Carbon fiber thereon
Dimension；The length of Carbon fibe alive is 1-8mm（Preferably 2-5mm, optimum length 3mm）；The absolute dry mass of aramid fiber fibrid accounts for described
The 10-50% of active carbon fiber paper absolute dry mass（Preferably 25-40%, most preferably 30%）.
Present invention also offers the preparation method of above-mentioned active carbon fiber paper, comprise the following steps：
（1）Prepared by fibrid slurries：Aramid fiber fibrid is taken to pull an oar, beating consistency is 1-5%, the time of discongesting is 10-
30min, beating degree is 40 ~ 70 ° of SR；
（2）Prepared by NACF slurries：NACF is taken to pull an oar, beating consistency is 1-5%, the time of discongesting is 10-
20min, beating degree is 10 ~ 20 ° of SR；
（3）Fibrous paper just finished product preparation：After aramid fiber fibrid slurries and NACF slurries mixing and stirring,
Carry out mixing on a papermaking machine and join copying, paper machine online slurry concentration is 0.1-0.4%；
（4）Dry, shape：By step（3）The fibrous paper of middle preparation is after just finished product is directly dried at 80-120 DEG C（Need not
First through wet pressing）, hot forming；Described hot pressing temperature is 100-180 DEG C, and hot pressing pressure is 5-15MPa, and hot pressing time is 20-
60s.
Above-mentioned preparation method comprises the following steps that：
（1）By load weighted aramid fiber fibrid beater with different beating consistencies（1 ~ 5%, preferably 3%）With discongest
Time（10 ~ 30 min, preferably 25min）Pulled an oar, obtained the fibrid slurries of different beating degrees, beating degree is controlled 40
~70°SR（Preferably 55 ° SR）.
（2）Chopped NACF by load weighted certain length（1-8mm, preferably 2-5mm, optimum length 3mm）With
Beater is with different beating consistencies（1 ~ 5%, preferably 2%）With the time of discongesting（10 ~ 20 min, preferably 15min）, obtain difference and beat
The NACF slurries of the degree of beating, beating degree controls in 10 ~ 20 ° of SR（Preferably 15 ° SR）.
（3）Account for 10 ~ 50% by aramid fiber fibrid（In terms of aramid fiber fibrid absolute dry mass, with respect to fibrous paper over dry matter
The ratio of amount, preferably 25-40%, most preferably 30%）Proportioning by fibrid slurries and NACF slurries mixing and stirring
Afterwards, mixing carried out on small test paper machine join copying, online slurry concentration controls 0.1 ~ 0.4%（Preferably 0.2%）.
（4）Just finished product, without wet pressing, is directly placed in electric drying oven with forced convection in 80 ~ 120 DEG C the paper manufactured paper with pulp（Excellent
Select 105 DEG C）Dry.
（5）The scraps of paper after drying are put into different heat pressing process hot formings on flat-bed press, controls hot pressing temperature
Spend for 100 ~ 180 DEG C（Preferably 140 DEG C）, hot pressing pressure is 5 ~ 15 MPa（Preferably 10 MPa）, hot pressing time is 20 ~ 60 s（Excellent
Select 30 s）.
The present invention has advantages below compared to existing technology：
1st, using becoming, paper is good, dry wet strength is big and has good bonding and the precipitating of coherent is fine first for the present invention
Dimension substitutes conventional process of plant fiber pulp in conventional carbon filter paper, and fibrid is while as NACF carrier
Humidification being played, the enhanced techniques of reinforcing agent such as conventional carbon standby middle employing styrene-butadiene latex made of paper being saved, thus contracting
Short activated carbon paper production procedure.
2nd, the present invention replaces active carbon powder as sorbing material using the NACF that is chopped, and its aperture is small, aperture
Distribution is narrow, and specific surface area is big, and absorption property is more excellent, and adsorbs fast with desorption rate, and during use, dust pollution is few.
3rd, the present invention is mixed with, using aramid fiber fibrid and chopped NACF, the fibrous paper obtaining, and compares tradition
Activated carbon filter paper have compared with high absorption property and higher-strength, optimal adsorption efficiency can reach 97%, and tensile strength is simultaneously
0.72 kN/m.The active carbon fiber paper surface that the present invention prepares is difficult dry linting, makes processing with using more convenient, can enter
One step expands the range of application of activated carbon filter paper.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.
Embodiment 1
Prepared by meta-aramid fibre fibrid：With m-phthaloyl chloride（IPC）And m-phenylene diamine (MPD)（MPD）As polymerized monomer,
In dimethylacetylamide（DMAc）Meta-aramid solution is synthesized in system.Using the meta-aramid solution of synthesis, prepared meta virtue
Synthetic fibre fibrid.Wherein, meta-aramid solution concentration 3%, coagulating bath H2O/DMAc mixed weight is than for 70:30, rotor speed is
2000 r/min.
Prepared by fibrous paper：Load weighted meta-aramid fibre fibrid beater is discongested 25 with 3% beating consistency
Min, obtains the fibrid slurries that beating degree is 55 ° of SR.The chopped viscose-based active carbon that load weighted length is 3 mm is fine
Wesy's beater discongests 15 min with 2% beating consistency, obtains the NACF slurries that beating degree is 15 ° of SR.By meta virtue
Synthetic fibre fibrid accounts for 30%（In terms of aramid fiber fibrid absolute dry mass, with respect to the ratio of fibrous paper absolute dry mass）Proportioning will sink
After analysis fiber slurry and NACF slurries mixing and stirring, mixing carried out on small test paper machine join copying, online
Slurry concentration controls 0.2%.Just finished product is directly placed in electric drying oven with forced convection in 105 DEG C of drying the paper manufactured paper with pulp.To dry
The scraps of paper after dry put into flat-bed press hot pressing temperature be 140 DEG C, hot pressing pressure be 10 MPa, hot pressing time be 30 s
Heat pressing process hot pressing obtains fibrid and strengthens active carbon fiber paper.This paper surface exquisiteness is difficult dry linting, and adsorption efficiency is 97%,
Tensile strength is 0.72 kN/m.
Embodiment 2
Prepared by meta-aramid fibre fibrid：With m-phthaloyl chloride（IPC）And m-phenylene diamine (MPD)（MPD）As polymerized monomer,
In dimethylacetylamide（DMAc）Meta-aramid solution is synthesized in system.Using the meta-aramid solution of synthesis, prepared meta virtue
Synthetic fibre fibrid.Wherein, meta-aramid solution concentration 5%, coagulating bath H2O/DMAc mixed weight is than for 60:40, rotor speed is
2500 r/min.
Prepared by fibrous paper：Load weighted meta-aramid fibre fibrid beater is discongested 10 with 1% beating consistency
Min, obtains the fibrid slurries that beating degree is 40 ° of SR.The chopped viscose-based active carbon that load weighted length is 1 mm is fine
Wesy's beater discongests 20 min with 5% beating consistency, obtains the NACF slurries that beating degree is 20 ° of SR.By meta virtue
Synthetic fibre fibrid accounts for 10%（In terms of aramid fiber fibrid absolute dry mass, with respect to the ratio of fibrous paper absolute dry mass）Proportioning will sink
After analysis fiber slurry and NACF slurries mixing and stirring, mixing carried out on small test paper machine join copying, online
Slurry concentration controls 0.1%.Just finished product is directly placed in electric drying oven with forced convection in 120 DEG C of drying the paper manufactured paper with pulp.To dry
The scraps of paper after dry put into flat-bed press hot pressing temperature be 100 DEG C, hot pressing pressure be 15 MPa, hot pressing time be 60 s
Heat pressing process hot pressing obtains fibrid and strengthens active carbon fiber paper.This paper surface exquisiteness is difficult dry linting, and adsorption efficiency is 98%,
Tensile strength is 0.59 kN/m.
Embodiment 3
Prepared by p-aramid fiber fibrid：With paraphthaloyl chloride（IPC）And p-phenylenediamine（MPD）As polymerized monomer,
In dimethylacetylamide（DMAc）P-aramid fiber solution is synthesized in system.Using the p-aramid fiber solution of synthesis, contraposition virtue is obtained
Synthetic fibre fibrid.Wherein, p-aramid fiber solution concentration 7%, coagulating bath H2O/DMAc mixed weight is than for 70:30, rotor speed is
3000 r/min.
Prepared by fibrous paper：Load weighted p-aramid fiber fibrid beater is discongested 30 with 5% beating consistency
Min, obtains the fibrid slurries that beating degree is 70 ° of SR.The chopped viscose-based active carbon that load weighted length is 8 mm is fine
Wesy's beater discongests 10 min with 1% beating consistency, obtains the NACF slurries that beating degree is 10 ° of SR.By contraposition
Aramid fiber fibrid accounts for 50%（In terms of aramid fiber fibrid absolute dry mass, with respect to the ratio of fibrous paper absolute dry mass）Proportioning will
After fibrid slurries and NACF slurries mixing and stirring, mixing carried out on small test paper machine join copying, on
Net slurry concentration controls 0.4%.Just finished product is directly placed in electric drying oven with forced convection in 80 DEG C of drying the paper manufactured paper with pulp.To dry
The scraps of paper after dry put into flat-bed press hot pressing temperature be 180 DEG C, hot pressing pressure be 5 MPa, hot pressing time be 20 s heat
Pressure technique hot pressing obtains fibrid and strengthens active carbon fiber paper.This paper surface exquisiteness is difficult dry linting, and adsorption efficiency is 82%, resists
Zhang Qiangdu is 0.78 kN/m.
Claims (4)
1. a kind of active carbon fiber paper it is characterised in that：Described active carbon fiber paper, with aramid fiber fibrid as carrier, is born thereon
Carry NACF；Described aramid fiber fibrid selects meta-aramid fibre fibrid or p-aramid fiber fibrid；Described activity
The length of Carbon fibe is 2-5mm；The absolute dry mass of described aramid fiber fibrid accounts for the 25- of described active carbon fiber paper absolute dry mass
40%；
Described meta-aramid fibre fibrid is prepared by the following method：Single as polymerization using m-phthaloyl chloride and m-phenylene diamine (MPD)
Body, synthesizes meta-aramid solution in dimethylacetamide amine system；Using the meta-aramid solution of synthesis, prepared meta-aramid sinks
Analysis fiber；
Described p-aramid fiber fibrid is prepared by the following method：Single as polymerization using paraphthaloyl chloride and p-phenylenediamine
Body, synthesizes p-aramid fiber solution in dimethylacetamide amine system；Using the p-aramid fiber solution of synthesis, prepared p-aramid fiber sinks
Analysis fiber；
Described activated carbon fiber paper is prepared by following steps：
（1）Prepared by fibrid slurries：Aramid fiber fibrid is taken to pull an oar, beating consistency is 1-5%, the time of discongesting is 10-30min,
Beating degree is 40 ~ 70 ° of SR；
（2）Prepared by NACF slurries：NACF is taken to pull an oar, beating consistency is 1-5%, the time of discongesting is 10-20min,
Beating degree is 10 ~ 20 ° of SR；
（3）Fibrous paper just finished product preparation：After aramid fiber fibrid slurries and NACF slurries mixing and stirring, making
Mixing carried out on paper machine join copying, paper machine online slurry concentration is 0.1-0.4%；
（4）Dry, shape：By step（3）The fibrous paper of middle preparation after just finished product is directly dried at 80-120 DEG C, is hot pressed into
Shape；Described hot pressing temperature is 100-180 DEG C, and hot pressing pressure is 5-15MPa, and hot pressing time is 20-60s.
2. active carbon fiber paper according to claim 1 it is characterised in that：Described aramid fiber fibrid adopts meta-aramid
Fibrid；The length of described NACF is 3mm；The absolute dry mass of described aramid fiber fibrid accounts for described NACF
The 30% of paper absolute dry mass.
3. active carbon fiber paper according to claim 1 it is characterised in that：Described step（1）Middle aramid fiber fibrid
Beating consistency is 3%, and the time of discongesting is 25min, and beating degree is 55 ° of SR；Described step（2）The beating consistency of middle NACF
For 2%, the time of discongesting is 15min, and beating degree is 15 ° of SR；Described step（3）Middle paper machine online slurry concentration is 0.2%.
4. active carbon fiber paper according to claim 1 it is characterised in that：Described step（4）Middle drying temperature is 105
℃；Hot pressing temperature is 140 DEG C, and hot pressing pressure is 10MPa, and hot pressing time is 30s.
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| CN107151938A (en) * | 2017-05-12 | 2017-09-12 | 南通美亚新型活性炭制品有限公司 | A kind of high intensity antibacterial moisture adsorption and releasing paper substrate corrugated material and preparation method |
| CN110258172A (en) * | 2019-07-05 | 2019-09-20 | 华南理工大学 | High-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material and preparation method thereof |
| CN113293640B (en) * | 2021-06-28 | 2023-06-16 | 山东聚芳新材料股份有限公司 | Para-aramid nanofiber and high-performance carbon fiber composite paper and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619553A (en) * | 2008-11-28 | 2010-01-06 | 富阳市钱旺纸业有限公司 | A kind of production process of composite functional paper |
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103482996A (en) * | 2013-10-14 | 2014-01-01 | 中国科学院山西煤炭化学研究所 | Method for preparing carbon fibre and graphene composite paper |
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| JP2806582B2 (en) * | 1989-12-28 | 1998-09-30 | 三菱製紙株式会社 | Activated carbon fiber sheet and filter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619553A (en) * | 2008-11-28 | 2010-01-06 | 富阳市钱旺纸业有限公司 | A kind of production process of composite functional paper |
| CN103451989A (en) * | 2013-09-18 | 2013-12-18 | 烟台民士达特种纸业股份有限公司 | Electrothermal high-temperature-resistant carbon fiber paper and preparation method thereof |
| CN103482996A (en) * | 2013-10-14 | 2014-01-01 | 中国科学院山西煤炭化学研究所 | Method for preparing carbon fibre and graphene composite paper |
Non-Patent Citations (1)
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Effective date of registration: 20201022 Address after: 226019 No.205, building 6, Nantong University, No.9, Siyuan Road, Nantong City, Jiangsu Province Patentee after: Center for technology transfer, Nantong University Address before: 226019 Jiangsu city of Nantong province sik Road No. 9 Patentee before: NANTONG University |