CN108842299A - The preparation method of air filtration composite cellulosic membrane - Google Patents
The preparation method of air filtration composite cellulosic membrane Download PDFInfo
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- CN108842299A CN108842299A CN201810691932.3A CN201810691932A CN108842299A CN 108842299 A CN108842299 A CN 108842299A CN 201810691932 A CN201810691932 A CN 201810691932A CN 108842299 A CN108842299 A CN 108842299A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/43—Acrylonitrile series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4318—Fluorine series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/021—Moisture-responsive characteristics hydrophobic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/022—Moisture-responsive characteristics hydrophylic
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/04—Filters
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a kind of preparation method of air filtration composite cellulosic membrane, the preparation method includes：S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution, obtains the first spinning solution；S2, it is mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and silica to obtain colloidal solution, obtains the second spinning solution；S3, first layer tunica fibrosa is prepared using the first spinning solution, prepares second layer tunica fibrosa on first layer tunica fibrosa using the first spinning solution and the second spinning solution, prepared third layer tunica fibrosa on second layer tunica fibrosa using the second spinning solution, obtain composite cellulosic membrane.The preparation method of composite cellulosic membrane is simple in the present invention, composite cellulosic membrane filter efficiency with higher.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to a kind of preparation side of air filtration composite cellulosic membrane
Method.
Background technique
In recent years, serious haze pollution problem brings significant damage to human health and social production life.In people
In terms of body health, the fine particle (PM2.5) in haze can go deep into lung and cardiovascular system, and cerebral apoplexy, heart are suffered from increase
The risk of the chronic respiratory diseases such as disease, lung cancer and asthma leads to annual more than the 300 ten thousand people's premature death in the whole world；In addition, when sky
PM2.5 level is higher than 70 μ g m in gas-3When, 10 μ g m of every increase-3, the onset risk increase by 14% of membranous nephropathy.
The processing of existing PM2.5 mainly includes：
Filtration method, including air-conditioning, humidifier, air freshener etc., advantage be substantially reduced the concentration of PM2.5, the disadvantage is that
Filter membrane needs to clean or replace；
Water adsorption method, ultrasonic atomizer, indoor drencher, pond, fish jar etc. can absorb the hydrophilic PM2.5 in air,
The disadvantage is that increasing humidity, hydrophobic PM2.5 be cannot be removed effectively；
Plant absorption method, plant leaf blade have biggish surface area, can absorb pernicious gas and absorption PM2.5, advantage
It is that can generate favourable gas, the disadvantage is that absorption efficiency is low, some plants can generate pernicious gas.
In the above method in filtration method use process, the selection of filter membrane is especially reused, filter membrane in the prior art
Filter efficiency is relatively low, causes the treatment effeciency to PM2.5 lower.
Therefore, in view of the above technical problems, it is necessary to which a kind of preparation method of air filtration composite cellulosic membrane is provided.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of preparation methods of air filtration composite cellulosic membrane.
To achieve the goals above, the technical solution that one embodiment of the invention provides is as follows：
A kind of preparation method of air filtration composite cellulosic membrane, the preparation method include：
S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution,
Obtain the first spinning solution；
S2, it is mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and silica to obtain glue
Liquid solution obtains the second spinning solution；
S3, first layer tunica fibrosa is prepared using the first spinning solution, using the first spinning solution and the second spinning solution in first layer
Second layer tunica fibrosa is prepared on tunica fibrosa, is prepared third layer tunica fibrosa on second layer tunica fibrosa using the second spinning solution, is obtained
Composite cellulosic membrane.
As a further improvement of the present invention, in first spinning solution Kynoar content be 20-40wt%, N,
The content of N- dimethyl acetamide is 40-70wt%, and the content of polyethylene glycol is 5-10wt%.
As a further improvement of the present invention, the content of polyacrylonitrile is 20-40wt%, N, N- in second spinning solution
The content of dimethyl acetamide is 40-70wt%, and the content of polyethylene glycol is 5-10wt%, and the content of silica is 1-
10wt%.
As a further improvement of the present invention, the content of Kynoar is 30wt%, N, N- in first spinning solution
The content of dimethyl acetamide is 65wt%, and the content of polyethylene glycol is 5wt%.
As a further improvement of the present invention, the content of polyacrylonitrile is 29wt%, N, N- bis- in second spinning solution
The content of methylacetamide is 64wt%, and the content of polyethylene glycol is 4wt%, and the content of silica is 3wt%.
As a further improvement of the present invention, in the step S3, the first spinning solution and when preparing second layer tunica fibrosa
The mass ratio of two spinning solutions is 1:3-3:1.
As a further improvement of the present invention, in the step S3, the first spinning solution and when preparing second layer tunica fibrosa
The mass ratio of two spinning solutions is 1:2.5.
The beneficial effects of the invention are as follows：
The preparation method of composite cellulosic membrane is simple in the present invention, and composite cellulosic membrane filter efficiency with higher gathers inclined fluorine
Ethylene has hydrophobicity, and polyacrylonitrile has hydrophily, is transported by the wet steam that tunica fibrosa can be enhanced in the increase of silica
Ability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the process flow chart of composite fibre membrane preparation method in the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Join shown in Fig. 1, the invention discloses a kind of preparation methods of air filtration composite cellulosic membrane, including：
S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution,
Obtain the first spinning solution；
S2, it is mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and silica to obtain glue
Liquid solution obtains the second spinning solution；
S3, first layer tunica fibrosa is prepared using the first spinning solution, using the first spinning solution and the second spinning solution in first layer
Second layer tunica fibrosa is prepared on tunica fibrosa, is prepared third layer tunica fibrosa on second layer tunica fibrosa using the second spinning solution, is obtained
Composite cellulosic membrane.
Wherein, the content of Kynoar is 20-40wt% in the first spinning solution, and the content of n,N-dimethylacetamide is
40-70wt%, the content of polyethylene glycol are 5-10wt%.Preferably, the content of Kynoar is 30wt%, N, N- dimethyl
The content of acetamide is 65wt%, and the content of polyethylene glycol is 5wt%.
Wherein, the content of polyacrylonitrile is 20-40wt% in the second spinning solution, and the content of n,N-dimethylacetamide is
40-70wt%, the content of polyethylene glycol are 5-10wt%, and the content of silica is 1-10wt%.Preferably, polyacrylonitrile
Content is 29wt%, and the content of n,N-dimethylacetamide is 64wt%, and the content of polyethylene glycol is 4wt%, silica
Content is 3wt%.
Further, the mass ratio of the first spinning solution and the second spinning solution is 1 when preparing second layer tunica fibrosa:3-3:1.It is excellent
The mass ratio of selection of land, the first spinning solution and the second spinning solution is 1:2.5.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1：
The preparation method of air filtration composite cellulosic membrane in the present embodiment, including：
S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution,
Obtaining the first spinning solution, wherein the content of Kynoar is 30wt%, and the content of n,N-dimethylacetamide is 65wt%,
The content of polyethylene glycol is 5wt%；
S2, it is mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and silica to obtain glue
Liquid solution obtains the second spinning solution, wherein the content of polyacrylonitrile is 29wt%, and the content of n,N-dimethylacetamide is
64wt%, the content of polyethylene glycol are 4wt%, and the content of silica is 3wt%；
S3, first layer tunica fibrosa is prepared using the first spinning solution, (mass ratio is using the first spinning solution and the second spinning solution
1:2.5) second layer tunica fibrosa is prepared on first layer tunica fibrosa, prepares third on second layer tunica fibrosa using the second spinning solution
Layer tunica fibrosa, obtains composite cellulosic membrane.
Embodiment 2：
The preparation method of air filtration composite cellulosic membrane in the present embodiment, including：
S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution,
Obtaining the first spinning solution, wherein the content of Kynoar is 30wt%, and the content of n,N-dimethylacetamide is 65wt%,
The content of polyethylene glycol is 5wt%；
S2, it is mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and silica to obtain glue
Liquid solution obtains the second spinning solution, wherein the content of polyacrylonitrile is 29wt%, and the content of n,N-dimethylacetamide is
64wt%, the content of polyethylene glycol are 4wt%, and the content of silica is 3wt%；
S3, first layer tunica fibrosa is prepared using the first spinning solution, (mass ratio is using the first spinning solution and the second spinning solution
1:1) second layer tunica fibrosa is prepared on first layer tunica fibrosa, prepares third layer on second layer tunica fibrosa using the second spinning solution
Tunica fibrosa obtains composite cellulosic membrane.
Embodiment 3：
The preparation method of air filtration composite cellulosic membrane in the present embodiment, including：
S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution,
Obtaining the first spinning solution, wherein the content of Kynoar is 30wt%, and the content of n,N-dimethylacetamide is 65wt%,
The content of polyethylene glycol is 5wt%；
S2, it is mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and silica to obtain glue
Liquid solution obtains the second spinning solution, wherein the content of polyacrylonitrile is 30wt%, and the content of n,N-dimethylacetamide is
64wt%, the content of polyethylene glycol are 5wt%, and the content of silica is 1wt%；
S3, first layer tunica fibrosa is prepared using the first spinning solution, (mass ratio is using the first spinning solution and the second spinning solution
1:2.5) second layer tunica fibrosa is prepared on first layer tunica fibrosa, prepares third on second layer tunica fibrosa using the second spinning solution
Layer tunica fibrosa, obtains composite cellulosic membrane.
Composite cellulosic membrane in embodiment 1,2,3 can achieve 99% to the filter efficiency of NaCl aerosol, 90%,
96%, it is found that the specific surface area for the composite cellulosic membrane that the proportion in embodiment 1 obtains is maximum, filter efficiency highest.
As can be seen from the above technical solutions, the present invention has the advantages that：
The preparation method of composite cellulosic membrane is simple in the present invention, and composite cellulosic membrane filter efficiency with higher gathers inclined fluorine
Ethylene has hydrophobicity, and polyacrylonitrile has hydrophily, is transported by the wet steam that tunica fibrosa can be enhanced in the increase of silica
Ability.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of preparation method of air filtration composite cellulosic membrane, which is characterized in that the preparation method includes：
S1, it is mixed and stirred for Kynoar, n,N-dimethylacetamide, polyethylene glycol to obtain colloidal solution, be obtained
First spinning solution；
S2, be mixed and stirred for polyacrylonitrile, n,N-dimethylacetamide, polyethylene glycol and the silica to obtain colloid it is molten
Liquid obtains the second spinning solution；
S3, first layer tunica fibrosa is prepared using the first spinning solution, using the first spinning solution and the second spinning solution in first layer fiber
Second layer tunica fibrosa is prepared on film, is prepared third layer tunica fibrosa on second layer tunica fibrosa using the second spinning solution, is obtained compound
Tunica fibrosa.
2. preparation method according to claim 1, which is characterized in that the content of Kynoar in first spinning solution
For 20-40wt%, the content of n,N-dimethylacetamide is 40-70wt%, and the content of polyethylene glycol is 5-10wt%.
3. preparation method according to claim 1, which is characterized in that the content of polyacrylonitrile is in second spinning solution
20-40wt%, the content of n,N-dimethylacetamide are 40-70wt%, and the content of polyethylene glycol is 5-10wt%, silica
Content be 1-10wt%.
4. preparation method according to claim 2, which is characterized in that the content of Kynoar in first spinning solution
For 30wt%, the content of n,N-dimethylacetamide is 65wt%, and the content of polyethylene glycol is 5wt%.
5. preparation method according to claim 3, which is characterized in that the content of polyacrylonitrile is in second spinning solution
29wt%, the content of n,N-dimethylacetamide are 64wt%, and the content of polyethylene glycol is 4wt%, and the content of silica is
3wt%.
6. preparation method according to claim 1, which is characterized in that in the step S3, when preparing second layer tunica fibrosa
The mass ratio of first spinning solution and the second spinning solution is 1:3-3:1.
7. preparation method according to claim 6, which is characterized in that in the step S3, when preparing second layer tunica fibrosa
The mass ratio of first spinning solution and the second spinning solution is 1:2.5.
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| CN201810691932.3A CN108842299A (en) | 2018-06-28 | 2018-06-28 | The preparation method of air filtration composite cellulosic membrane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983631A (en) * | 2019-12-19 | 2020-04-10 | 北京科技大学 | Composite nanofiber membrane and preparation method thereof |
| CN111013407A (en) * | 2019-12-31 | 2020-04-17 | 杭州帝凡过滤技术有限公司 | Multi-stage filtration hydrophilic nanofiber membrane and manufacturing method thereof |
| CN113215727A (en) * | 2021-05-21 | 2021-08-06 | 南京工业大学 | Preparation method of air purification membrane with antibacterial property |
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| CN108203861A (en) * | 2018-02-28 | 2018-06-26 | 宁波革创新材料科技有限公司 | A kind of composite cellulosic membrane for being used for air filtering |
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| CN203899307U (en) * | 2014-01-24 | 2014-10-29 | 中国科学院重庆绿色智能技术研究院 | Efficient low-resistance antibacterial air purification filter membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110983631A (en) * | 2019-12-19 | 2020-04-10 | 北京科技大学 | Composite nanofiber membrane and preparation method thereof |
| CN111013407A (en) * | 2019-12-31 | 2020-04-17 | 杭州帝凡过滤技术有限公司 | Multi-stage filtration hydrophilic nanofiber membrane and manufacturing method thereof |
| CN113215727A (en) * | 2021-05-21 | 2021-08-06 | 南京工业大学 | Preparation method of air purification membrane with antibacterial property |
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Application publication date: 20181120 |