CN112844069A - Method for manufacturing nano film and mask - Google Patents
Method for manufacturing nano film and mask Download PDFInfo
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- CN112844069A CN112844069A CN202010729469.4A CN202010729469A CN112844069A CN 112844069 A CN112844069 A CN 112844069A CN 202010729469 A CN202010729469 A CN 202010729469A CN 112844069 A CN112844069 A CN 112844069A
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- spinning
- polyvinylidene fluoride
- solute
- nanomembrane
- maple
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000002120 nanofilm Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 17
- 239000002033 PVDF binder Substances 0.000 claims abstract description 45
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 45
- 238000009987 spinning Methods 0.000 claims abstract description 43
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 40
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 26
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 24
- 241000208140 Acer Species 0.000 claims abstract description 23
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims abstract description 14
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 11
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims description 20
- 230000035699 permeability Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 239000004743 Polypropylene Substances 0.000 abstract description 5
- -1 polypropylene Polymers 0.000 abstract description 5
- 229920001155 polypropylene Polymers 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 9
- 239000012528 membrane Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001523 electrospinning Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004750 melt-blown nonwoven Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000711573 Coronaviridae Species 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
- A41D31/102—Waterproof and breathable
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/14—Air permeable, i.e. capable of being penetrated by gases
- A41D31/145—Air permeable, i.e. capable of being penetrated by gases using layered materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D2500/00—Materials for garments
- A41D2500/30—Non-woven
Abstract
The invention discloses a manufacturing method of a nanometer film and a mask, comprising the following steps: s1, selecting one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) as a solvent, selecting at least one of Sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF) and maple as a solute, and dissolving the solute in the solvent to prepare a spinning casting solution; s2, filling the spinning casting solution into a spinning generator, adjusting the spinning flow of the spinning generator, connecting the spinning generator and a receiver into a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode, and adjusting the voltage to prepare electrostatic spinning; and S3, spraying the electrostatic spinning on the non-woven fabric substrate to form the nano-film. According to the manufacturing method of the nano-film, the characteristics of the materials of the polyether sulfone, the polyvinylidene fluoride and the maple are far superior to those of the polypropylene in the related technology, and then the materials are processed by utilizing an electrostatic spinning process, so that the manufactured nano-film has the advantages of high aperture ratio, low resistance, good air permeability and long service life.
Description
Technical Field
The invention relates to the technical field of air filtration, in particular to a manufacturing method of a nano-film and a mask.
Background
In recent years, the atmospheric environment is increasingly poor, haze frequently occurs, SARS in 2003 and coronavirus in 2020 cause serious harm to human health, so that it is urgent to design and produce a material capable of effectively trapping dust particles and bacteria in the air.
The protective mask and the medical mask produced in the market at present become main means for blocking particulate matters and blocking the propagation of bacteria, the core filtering material of the medical mask is a filtering material produced by a melt-spraying method at present, the production speed is high, the cost is low, certain particles and bacteria can be intercepted, an electret method is adopted in post-treatment, and the filtering performance is further improved by utilizing the principle of electrostatic adsorption.
Although the filtering effect can be improved by adopting the melt-blown electret method, the filtering effect of the electret melt-blown non-woven fabric is very easy to attenuate, and the durability of the product performance is difficult to maintain. In the use process of the mask reused in the current market, the humidity of gas exhaled by the oral cavity is particularly high and reaches more than 80% -90%, water vapor forms a water layer on the surface of mask fibers, so that the resistance pressure drop is rapidly improved, the difficulty in breathing and inhaling is caused, and the service life of the mask is reduced.
Disclosure of Invention
The invention provides a method for manufacturing a nano-film, and the nano-film manufactured by the method has the advantages of long service life and good air permeability.
The invention also provides a mask which comprises the nano film manufactured by the manufacturing method of the nano film.
The method for manufacturing a nanomembrane according to an embodiment of the present invention includes: s1, selecting one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) as a solvent, selecting at least one of Sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF) and maple as a solute, and dissolving the solute in the solvent to prepare a spinning casting solution; s2, filling the spinning casting solution into a spinning generator, adjusting the spinning flow of the spinning generator, and connecting the spinning generator and a receiver into a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode and adjusting the voltage to prepare electrostatic spinning; s3, spraying the electrostatic spinning on a non-woven fabric substrate to form the nano-film.
According to the method for manufacturing the nano-membrane of the embodiment of the invention, one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) is used as a solvent, at least one of Sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF) and maple is used as a solute, and the polyethersulfone, polyvinylidene fluoride and maple have material characteristics far exceeding those of polypropylene in the related art, and then are processed by an electrospinning process, so that the manufactured nano-membrane has the advantages of high aperture ratio, low resistance, good air permeability and long service life.
According to some embodiments of the invention, the solute is added to the solvent at 40-80 ℃ and stirred for 6-10 h.
According to some embodiments of the invention, the solute comprises the maple and the polyvinylidene fluoride, and the mass ratio of the maple to the polyvinylidene fluoride is 0.05-20.
In some embodiments of the present invention, the mass ratio of the maple to the polyvinylidene fluoride is 0.1 to 10.
According to some embodiments of the invention, the solute comprises the polyethersulfone and the polyvinylidene fluoride, and the mass ratio of the polyethersulfone to the polyvinylidene fluoride is 0.05-20.
In some embodiments of the invention, the mass ratio of the polyethersulfone to the polyvinylidene fluoride is 0.1 to 10.
According to the mask of the embodiment of the invention, the mask comprises: the nano-film comprises an outer layer cloth, an inner layer cloth and an intermediate layer, wherein the outer layer cloth is formed into a spunbonded waterproof non-woven fabric material piece, the inner layer cloth is formed into a superfine soft spunbonded non-woven fabric material piece, the intermediate layer is formed into a nano-film material piece, the nano-film is manufactured by the manufacturing method of the nano-film, and the intermediate layer is arranged between the outer layer cloth and the inner layer cloth at intervals. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart of a method of manufacturing a nanomembrane according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
A method of manufacturing a nanomembrane according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
The method for manufacturing a nanomembrane according to an embodiment of the present invention includes: step S1, step S2, and step S3.
Specifically, as shown in fig. 1, in step S1, one of dimethylacetamide, dimethylformamide, or N-methyl-2-pyrrolidone (NMP) is selected as a solvent, at least one of sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF), and maple is selected as a solute, and the solute is dissolved in the solvent to prepare a spinning dope solution.
It is understood that the solute may be one of sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF), and maple; alternatively, the solute may be two of sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF), and maple; or the solute can be three of Sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF) and maple; alternatively, solutes include sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF), and maple. The solvent may be dimethylacetamide; or is dimethylformamide; or N-methyl-2-pyrrolidone (NMP).
It should be noted that, in the related art, polypropylene is used to manufacture the meltblown nonwoven fabric, and the material properties of the polyethersulfone, polyvinylidene fluoride and the polyimide in the present application far exceed those of polypropylene.
As shown in fig. 1, in step S2, the spinning casting solution is filled into a spinning generator, the spinning flow rate of the spinning generator is adjusted, and the spinning generator and the receiver are connected to a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode and the voltage is adjusted to prepare electrostatic spinning. Step S3 is to spray the electrospinning onto a non-woven fabric substrate to make a nanomembrane. The nano-film prepared by the electrostatic spinning process has the advantages of high aperture ratio, low resistance, good air permeability and long service life.
In one example of the invention, Sumitomo 5900p (molecular weight 2 × 10) is selected at the time of manufacture4-5×105) And at least one of polyethersulfone of Suwei 3000p, PVDF of Suwei and maple 3500 of Suwei as a solute.
For example, in one embodiment of the present invention, a method of fabricating a nanomembrane includes:
s1, selecting one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) as a solvent, and selecting Sumitomo5900p (molecular weight 2X 10)4-5×105) At least one of polyethersulfone of Suwei 3000p, PVDF of Suwei and maple 3500 of Suwei is used as a solute, the solute is added into a solvent at the temperature of 40-80 ℃, and the mixture is stirred for 6-10 hours to prepare a spinning casting solution;
s2, filling the spinning casting solution into a spinning generator, adjusting the spinning flow of the spinning generator, connecting the spinning generator and a receiver into a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode, and adjusting the voltage to prepare electrostatic spinning;
and S3, spraying the electrostatic spinning on the non-woven fabric substrate to form the nano-film.
According to the method for manufacturing the nano-membrane of the embodiment of the invention, one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) is used as a solvent, at least one of Sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF) and maple is used as a solute, and the polyethersulfone, polyvinylidene fluoride and maple have material characteristics far exceeding those of polypropylene in the related art, and then are processed by an electrospinning process, so that the manufactured nano-membrane has the advantages of high aperture ratio, low resistance, good air permeability and long service life.
According to some embodiments of the invention, as shown in fig. 1, the solute is added into the solvent at 40-80 ℃, and stirred for 6-10 h. Therefore, the dissolving uniformity of the solute can be improved, so that the uniformity of the spinning membrane casting solution can be improved, the prepared nano membrane has better air permeability and longer service life. For example, in one example of the present invention, the reaction temperature of the solute and the solvent may be 45 ℃, 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃ or 75 ℃. After the solute is added to the solvent, stirring may be carried out for 6h, 7h, 8h, 9h or 10 h.
According to some embodiments of the invention, the solute comprises both maple and polyvinylidene fluoride in a mass ratio of 0.05 to 20. Therefore, the silk diameter of the prepared nano film and the pore size of the nano film can be adjusted according to the needs, so that the requirements of different application environments can be better met. For example, in one example of the present invention, the mass ratio of the maple to the polyvinylidene fluoride is 0.1 to 10.
For example, in one embodiment of the present invention, a method of fabricating a nanomembrane includes:
s1, selecting one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) as a solvent, selecting polyvinylidene fluoride (PVDF) and maple as solutes, adding the solutes into the solvent at 40-80 ℃, and stirring for 6-10 hours to prepare a spinning casting solution;
s2, filling the spinning casting solution into a spinning generator, adjusting the spinning flow of the spinning generator, connecting the spinning generator and a receiver into a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode, and adjusting the voltage to prepare electrostatic spinning;
and S3, spraying the electrostatic spinning on the non-woven fabric substrate to form the nano-film.
According to some embodiments of the invention, the solute comprises polyethersulfone and polyvinylidene fluoride, and the mass ratio of polyethersulfone to polyvinylidene fluoride is 0.05-20. Therefore, the silk diameter of the prepared nano film and the pore size of the nano film can be adjusted according to the needs, so that the requirements of different application environments can be better met. For example, in one example of the present invention, the mass ratio of polyethersulfone to polyvinylidene fluoride is 0.1 to 10.
For example, in one embodiment of the present invention, a method of fabricating a nanomembrane includes:
s1, selecting one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) as a solvent, selecting polyether sulfone and polyvinylidene fluoride as solutes, adding the solutes into the solvent at 40-80 ℃, and stirring for 6-10 hours to prepare a spinning casting solution;
s2, filling the spinning casting solution into a spinning generator, adjusting the spinning flow of the spinning generator, connecting the spinning generator and a receiver into a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode, and adjusting the voltage to prepare electrostatic spinning;
and S3, spraying the electrostatic spinning on the non-woven fabric substrate to form the nano-film.
A mask according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
According to the mask of the embodiment of the invention, the mask comprises: an outer layer cloth formed as a spun-bonded waterproof nonwoven material; an intermediate layer formed as an ultra-fine nanomembrane material piece; the inner layer cloth is formed into an ultra-fine soft spun-bonded non-woven fabric material piece; the nano film is manufactured by the manufacturing method of the nano film, and the nano layer is separated between the outer layer cloth and the inner layer cloth.
Research shows that the air suction resistance of the mask is 180Pa under the condition that the air flow is 85L/min, the filtering efficiency of the mask on the non-oily particles reaches 98%, the mask is kept for 24 hours under the 85% humidity environment, the resistance is still maintained at 180Pa, and the filtering efficiency on the non-oily particles is still maintained at 98%, which indicates that the mask has good air permeability, long service life and high filtering effect.
According to some embodiments of the present invention, the outer layer cloth is formed as a spunbonded waterproof nonwoven material, the inner layer cloth is formed as an ultra-fine soft spunbonded nonwoven material, and the intermediate layer is formed as a nanomembrane material, the nanomembrane is manufactured by the above-described manufacturing method of the nanomembrane, and the intermediate layer is spaced between the outer layer cloth and the inner layer cloth.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A method for producing a nanomembrane, comprising:
s1, selecting one of dimethylacetamide, dimethylformamide or N-methyl-2-pyrrolidone (NMP) as a solvent, selecting at least one of Sumitomo 5900p, polyethersulfone, polyvinylidene fluoride (PVDF) and maple as a solute, and dissolving the solute in the solvent to prepare a spinning casting solution;
s2, filling the spinning casting solution into a spinning generator, adjusting the spinning flow of the spinning generator, and connecting the spinning generator and a receiver into a direct-current high-voltage positive electrode and a direct-current high-voltage negative electrode and adjusting the voltage to prepare electrostatic spinning;
s3, spraying the electrostatic spinning on a non-woven fabric substrate to form the nano-film.
2. The method for producing a nanomembrane according to claim 1, wherein the solute is added to the solvent at 40 ℃ to 80 ℃ and stirred for 6 to 10 hours.
3. The method for producing a nanomembrane according to claim 1, wherein the solute comprises the maple and the polyvinylidene fluoride in a mass ratio of 0.05 to 20.
4. The method for producing a nanofilm according to claim 3, wherein the mass ratio of the maple to the polyvinylidene fluoride is 0.1 to 10.
5. The method for producing a nanomembrane according to claim 1, wherein the solute comprises the polyethersulfone and the polyvinylidene fluoride, and a mass ratio of the polyethersulfone to the polyvinylidene fluoride is 0.05 to 20.
6. The method for producing a nanofilm according to claim 5, wherein the mass ratio of the polyethersulfone to the polyvinylidene fluoride is 0.1 to 10.
7. A mask, comprising:
an outer layer cloth formed as a spun-bonded waterproof nonwoven material;
the inner layer cloth is formed into an ultra-fine soft spun-bonded non-woven fabric material piece;
an intermediate layer formed as the nanomembrane material piece, the nanomembrane being manufactured by the nanomembrane manufacturing method according to any one of claims 1 to 6, the intermediate layer being spaced between the outer layer cloth and the inner layer cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010729469.4A CN112844069A (en) | 2020-07-27 | 2020-07-27 | Method for manufacturing nano film and mask |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010729469.4A CN112844069A (en) | 2020-07-27 | 2020-07-27 | Method for manufacturing nano film and mask |
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| CN112844069A true CN112844069A (en) | 2021-05-28 |
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| CN202010729469.4A Pending CN112844069A (en) | 2020-07-27 | 2020-07-27 | Method for manufacturing nano film and mask |
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| CN2609582Y (en) * | 2003-05-15 | 2004-04-07 | 上海市凌桥环保设备厂 | Gauze mask with dust-proof and bacterial filter |
| US20100093879A1 (en) * | 2007-03-12 | 2010-04-15 | Lloyd Douglas R | High Selectivity Polymer-Nano-Porous Particle Membrane Structures |
| CN102240511A (en) * | 2010-05-13 | 2011-11-16 | 中国科学院理化技术研究所 | Polysulphone nanometer fiber polymer membrane and preparation method as well as application thereof |
| CN102470327A (en) * | 2009-07-22 | 2012-05-23 | 三菱丽阳株式会社 | Process for producing porous film |
| CN103638830A (en) * | 2013-12-20 | 2014-03-19 | 苏州膜华材料科技有限公司 | Preparation method of hot-method polyvinylidene fluoride hollow fiber membrane for drinking water treatment |
| CN105289338A (en) * | 2014-07-23 | 2016-02-03 | 上海一鸣过滤技术有限公司 | Polyether sulfone/polyvinylidene fluoride blend membrane with support layer and preparation method of blend membrane |
-
2020
- 2020-07-27 CN CN202010729469.4A patent/CN112844069A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2609582Y (en) * | 2003-05-15 | 2004-04-07 | 上海市凌桥环保设备厂 | Gauze mask with dust-proof and bacterial filter |
| US20100093879A1 (en) * | 2007-03-12 | 2010-04-15 | Lloyd Douglas R | High Selectivity Polymer-Nano-Porous Particle Membrane Structures |
| CN102470327A (en) * | 2009-07-22 | 2012-05-23 | 三菱丽阳株式会社 | Process for producing porous film |
| CN102240511A (en) * | 2010-05-13 | 2011-11-16 | 中国科学院理化技术研究所 | Polysulphone nanometer fiber polymer membrane and preparation method as well as application thereof |
| CN103638830A (en) * | 2013-12-20 | 2014-03-19 | 苏州膜华材料科技有限公司 | Preparation method of hot-method polyvinylidene fluoride hollow fiber membrane for drinking water treatment |
| CN105289338A (en) * | 2014-07-23 | 2016-02-03 | 上海一鸣过滤技术有限公司 | Polyether sulfone/polyvinylidene fluoride blend membrane with support layer and preparation method of blend membrane |
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Application publication date: 20210528 |