CN112774867A - Filtering component based on ionic liquid and micro-electric field and application - Google Patents
Filtering component based on ionic liquid and micro-electric field and application Download PDFInfo
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- CN112774867A CN112774867A CN202110195159.3A CN202110195159A CN112774867A CN 112774867 A CN112774867 A CN 112774867A CN 202110195159 A CN202110195159 A CN 202110195159A CN 112774867 A CN112774867 A CN 112774867A
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- 238000001914 filtration Methods 0.000 title claims abstract description 51
- 239000002608 ionic liquid Substances 0.000 title claims abstract description 38
- WEVYAHXRMPXWCK-UHFFFAOYSA-N acetonitrile Substances CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 76
- 238000003756 stirring Methods 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 19
- 239000011268 mixed slurry Substances 0.000 claims description 15
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 10
- RVEJOWGVUQQIIZ-UHFFFAOYSA-N 1-hexyl-3-methylimidazolium Chemical compound CCCCCCN1C=C[N+](C)=C1 RVEJOWGVUQQIIZ-UHFFFAOYSA-N 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000839 emulsion Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 4
- 229910021592 Copper(II) chloride Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 2
- 229910003472 fullerene Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 241000700605 Viruses Species 0.000 abstract description 37
- 239000000443 aerosol Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000428 dust Substances 0.000 abstract description 8
- 238000007667 floating Methods 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000000474 nursing effect Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 208000035473 Communicable disease Diseases 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920000128 polypyrrole Polymers 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 238000007707 calorimetry Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000034659 glycolysis Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/53—Liquid, or liquid-film, electrodes
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Secondary Cells (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a filtering component based on ionic liquid and a micro-electric field, which comprises a button battery, a flexible conductive anode and a flexible conductive cathode, wherein the flexible conductive anode and the flexible conductive cathode are respectively connected with the button battery; the filter assembly is simple to prepare, low in manufacturing cost and has double protection effects; the application range is wide, the protection effect on floating dust, viruses and aerosol carrying the viruses is good, and the aerosol can be repeatedly used under the condition of electricity.
Description
Technical Field
The invention relates to a mask filtering assembly based on ionic liquid and a micro electric field and application thereof in mask preparation, and belongs to the field of protective equipment.
Background
The floating dust in the air can cause pneumoconiosis due to human inhalation, and the virus is the warrior of many infectious diseases, is an important factor for outbreak of infectious diseases, and is generally infected through the way of entrainment in the air and virus in water, etc., thus posing great threat to human health and environmental safety. The virus has stronger vitality, the virus organism is composed of genetic material and protein shell, and can be attached to aerosol and diffused along with the movement of air, the existing method for removing the virus comprises ultrafiltration membrane filtration method, activated carbon adsorption method, macromolecule flocculation precipitation method and the like, the method is generally applied to the adsorption of the virus in solution, some methods are inconvenient to use, some methods have higher cost, most methods are disposable, the repeated use cannot be achieved, a large amount of pollutants are caused, and the pollutants are retained in the environment for a long time and can slowly release the adsorbed virus microorganisms, thereby further harming the health of human bodies.
CN201120236960.X discloses an antiviral mask, which comprises a mask body, a left ear protection earcap and a right ear protection earcap, wherein the left ear protection earcap is sleeved on the left side of the mask body, the right ear protection earcap is sleeved on the right side of the mask body, the mask body comprises a dustproof filtering component, a virus filtering component and a nursing filtering component which are in a sheet structure and are sequentially arranged, the dustproof filtering component at least comprises four layers of breathable fabrics, the virus filtering component at least comprises four layers of anion adsorption breathable fabrics, the nursing filtering component at least comprises four layers of breathable fabrics, the dustproof filtering component firstly carries out primary filtering, then the virus filtering component adsorbs viruses and bacteria, and then the nursing filtering component is contacted with the skin after treatment, so that the sick individuals are prevented from transmitting harmful substances, thereby the infection sources are cut off, and the diffusion of the viruses is effectively inhibited, but the application range of the invention is not wide, and the adsorption saturation degree of the adsorption materials cannot, there may be problems of adsorption breakthrough and the like. CN201010150858.8 proposes an application of polypyrrole composite fiber in the aspect of virus adsorption, firstly positive charges are introduced into the fiber through an in-situ polymerization technology, so that the prepared polypyrrole composite fiber has abundant positive charges, and viruses with negative charges are adsorbed and filtered by utilizing the principle that the positive charges and the negative charges are mutually attracted.
Disclosure of Invention
Aiming at the existing masks in the market, most masks are disposable masks, adsorption materials in the masks are easy to reach adsorption saturation, the masks cannot be reused after the adsorption saturation, secondary pollution is caused, the adsorption performance is not good, and only particles with larger particle sizes in the air can be adsorbed, the invention provides a filtering assembly based on ionic liquid and a micro-electric field.
The method is mainly based on the special electronegativity of floating dust, viruses and aerosol carrying the viruses, the ionic liquid modified flexible electrode has good conductivity, the filtering component comprises two layers of ionic liquid modified flexible electrodes, the ionic liquid modified flexible electrode (flexible conductive negative electrode) connected with the negative electrode is arranged on the outer side, and the ionic liquid modified flexible electrode connected with the positive electrode is arranged on the inner side; under the action of the micro electric field electrode, floating dust with negative electricity, viruses and aerosol carrying the viruses are repelled when approaching the flexible conductive negative electrode and cannot enter the inside of the mask; if the floating dust, the virus and the aerosol carrying the virus move in the environment for a long time, the floating dust, the virus and the aerosol carrying the virus are charged and have positive electricity, and the flexible electrode modified by the ionic liquid with the inner side connected with the positive electrode repels the floating dust, the virus and the aerosol carrying the virus with the positive electricity under the action of an electric field, so that the effect of double insurance is achieved.
The preparation method of the flexible conductive anode or the flexible conductive cathode comprises the following steps:
(1) grinding a conductive material until the particle size is smaller than 200 meshes, placing the ground material in an ethanol solution with the mass concentration of 5-20%, stirring and mixing uniformly at 200-1200 rpm, adding a PTFE emulsion with the mass of 2-10% of the mixture and active alumina with the mass of 5-10% of the mixture, stirring for 5-30 min at 200-1200 rpm, continuing stirring and mixing for 30-60 min at 30-70 ℃ to obtain mixed slurry, placing the mixed slurry under a pair roller machine, repeatedly rolling the mixed slurry into a sheet with the thickness of 1-2 mm, and drying to obtain a flexible electrode;
(2) adding 0.1-1 g of CaH into 100mL of acetonitrile2Stirring and refluxing the mixture for reaction for 10 to 12 hours at the temperature of 70 to 85 ℃ in an oil bath, and cooling the mixture to normal temperature to prepare anhydrous acetonitrile; drying the flexible electrode at 50-80 ℃ for 0.5-1 h in a nitrogen atmosphere,and after the nitrogen atmosphere is reduced to the room temperature, adding ionic liquid and anhydrous acetonitrile, refluxing and stirring for 8-12 hours at the temperature of 80-90 ℃, reducing the temperature to the room temperature in the nitrogen atmosphere, filtering, washing with anhydrous acetonitrile, and finally drying for 8-12 hours at the temperature of 100-120 ℃ to obtain the catalyst.
The ionic liquid is [ Hmim ]]Tf2N、[Hmim]CuCl2、[Hmim]FeCl4In the present invention, the ionic liquid is prepared by a conventional method, for example, the following literature methods: "Sujatha I, Venkatarthnam G. Coorison of performance of a vacuum adsorption recovery system operating with a sodium hydrosolutorions and hydrosolutorions as reflexes along with an ionic liquid][TF2N] as the absorbent[J]International Journal of reflection, 2018, 88,370-382 or "Shuangjun C, Weihe S, Haidong C, et al Glycolysis of poly (ethylene terephthalate) waste mixed Lewis acidic requirements [ J]. Journal of Thermal Analysis and Calorimetry:1-9.”。
The conductive material is one of porous carbon, porous carbon silicon, graphene, carbon nano tube, fullerene, silver and copper.
The volume ratio of the ionic liquid to the anhydrous acetonitrile is 1-5: 10-20.
The invention also aims to apply the mask filter component based on the ionic liquid and the micro-electric field in the mask.
The method has the following advantages and effects:
(1) the filter assembly is simple to prepare, low in manufacturing cost and has double protection effects;
(2) the filter assembly has wide application range, good protection effect on floating dust, viruses and aerosol carrying the viruses, and can be repeatedly used under the condition of electricity.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the invention is not limited to the above-described examples.
Example 1: the filtering component based on the ionic liquid and the micro-electric field comprises a button battery, a flexible conductive anode and a flexible conductive cathode, wherein the flexible conductive anode and the flexible conductive cathode are respectively connected with the button battery; the filtering component is applied to a conventional medical mask, and an intermediate filtering layer of the filtering component is replaced, so that the mask is sequentially provided with a waterproof layer, a flexible conductive cathode, a flexible conductive anode and a comfort layer from outside to inside, and the flexible conductive anode and the flexible conductive cathode are respectively connected with a button cell and fixed in the mask;
the preparation method of the flexible conductive anode or the flexible conductive cathode comprises the following steps:
(1) grinding graphene until the particle size is smaller than 200 meshes, placing the ground material in an ethanol solution with the mass concentration of 5%, stirring and mixing uniformly at 200rpm, adding PTFE emulsion with the mass of 2% of the mixture and active alumina with the mass of 5% of the mixture, stirring for 20min at 200rpm, continuing stirring and mixing for 40min at 30 ℃ to obtain mixed slurry, placing the mixed slurry under a roll-to-roll machine, repeatedly rolling the mixed slurry into a sheet with the thickness of 1mm, and drying to obtain a flexible electrode;
(2) 100mL of acetonitrile was added 0.1g of CaH2Stirring and refluxing the mixture for reaction for 12 hours at the temperature of 70 ℃ in an oil bath, and cooling the reaction product to normal temperature to prepare anhydrous acetonitrile; drying the flexible electrode at 80 deg.C for 0.5h in nitrogen atmosphere, cooling to room temperature in nitrogen atmosphere, and adding [ Hmim ]]Tf2N ionic liquid and anhydrous acetonitrile, wherein the flexible electrode is immersed in the ionic liquid and the anhydrous acetonitrile, and the volume ratio of the ionic liquid to the anhydrous acetonitrile is 1: 10; stirring at 90 deg.C under reflux for 8 hr, cooling to room temperature under nitrogen atmosphere, filtering, washing with anhydrous acetonitrile, and drying at 100 deg.C for 12 hr;
the filter assembly prepared by the embodiment is used for filtering non-oily NaCl aerosol, the air flow is controlled to be (85 +/-2) L/min, the particle size is controlled to be (0.075 +/-0.020) mu m, and the aerosol filtering effect is detected; then testing the virus filtering effect by using a PK-174 mask Virus Filtering Efficiency (VFE) tester; the filtering efficiency of aerosol and virus is up to more than 99 percent; the filtered gas meets the standard that the particle filtering efficiency of the mask filter material of GB19083-2010 medical protective mask technical requirement is not less than 95%.
Example 2: the filtering component based on the ionic liquid and the micro-electric field comprises a button battery, a flexible conductive anode and a flexible conductive cathode, wherein the flexible conductive anode and the flexible conductive cathode are respectively connected with the button battery; the filtering component is applied to a conventional medical mask, and an intermediate filtering layer of the filtering component is replaced, so that the mask is sequentially provided with a waterproof layer, a flexible conductive cathode, a flexible conductive anode and a comfort layer from outside to inside, and the flexible conductive anode and the flexible conductive cathode are respectively connected with a button cell and fixed in the mask;
the preparation method of the flexible conductive anode or the flexible conductive cathode comprises the following steps:
(1) grinding graphite until the particle size is smaller than 200 meshes, placing the ground material into an ethanol solution with the mass concentration of 10%, stirring and mixing uniformly at 1200rpm, adding PTFE emulsion with the mass of 10% of the mixture and active alumina with the mass of 8% of the mixture, stirring for 10min at 1200rpm, continuing stirring and mixing for 30min at 70 ℃ to obtain mixed slurry, placing the mixed slurry under a roll-to-roll machine, repeatedly rolling the mixed slurry into sheets with the thickness of 1.5mm, and drying to obtain the flexible electrode;
(2) 100mL of acetonitrile was added 1g of CaH2Stirring and refluxing the mixture for reaction for 10 hours at the temperature of 85 ℃ in an oil bath, and cooling the mixture to normal temperature to prepare anhydrous acetonitrile; drying the flexible electrode at 50 deg.C for 1 hr under nitrogen atmosphere, cooling to room temperature under nitrogen atmosphere, and adding [ Hmim ]]CuCl2The flexible electrode is immersed in the ionic liquid and the anhydrous acetonitrile, and the volume ratio of the ionic liquid to the anhydrous acetonitrile is 1: 5; stirring at 90 deg.C under reflux for 8 hr, cooling to room temperature under nitrogen atmosphere, filtering, washing with anhydrous acetonitrile, and drying at 120 deg.C for 8 hr;
the filter assembly prepared by the embodiment is used for filtering non-oily NaCl aerosol, the air flow is controlled to be (85 +/-2) L/min, the particle size is controlled to be (0.075 +/-0.020) mu m, and the aerosol filtering effect is detected; then testing the virus filtering effect by using a PK-174 mask Virus Filtering Efficiency (VFE) tester; the filtering efficiency of aerosol and virus is up to more than 99 percent; the filtered gas meets the standard that the particle filtering efficiency of the mask filter material of GB19083-2010 medical protective mask technical requirement is not less than 95%.
Example 3: the filtering component based on the ionic liquid and the micro-electric field comprises a button battery, a flexible conductive anode and a flexible conductive cathode, wherein the flexible conductive anode and the flexible conductive cathode are respectively connected with the button battery;
the preparation method of the flexible conductive anode or the flexible conductive cathode comprises the following steps:
(1) grinding porous carbon to a particle size smaller than 200 meshes, placing the ground material in an ethanol solution with a mass concentration of 15%, stirring and mixing uniformly at 800rpm, adding a PTFE emulsion with a mass of 8% of the mixture and active alumina with a mass of 10% of the mixture, stirring for 15min at 800rpm, continuing stirring and mixing for 50min at 50 ℃ to obtain mixed slurry, placing the mixed slurry under a roll-to-roll machine, repeatedly rolling the mixed slurry into sheets with a thickness of 2mm, and drying to obtain the flexible electrode;
(2) 100mL of acetonitrile was added 0.5g of CaH2Stirring and refluxing the mixture for reaction for 11 hours at the temperature of 80 ℃ in an oil bath, and cooling the mixture to normal temperature to prepare anhydrous acetonitrile; drying the flexible electrode at 60 ℃ for 1h in a nitrogen atmosphere; the temperature was lowered to room temperature under a nitrogen atmosphere, and [ Hmim ] was added]FeCl4The flexible electrode is immersed in the ionic liquid and the anhydrous acetonitrile, and the volume ratio of the ionic liquid to the anhydrous acetonitrile is 1: 15; stirring at 85 deg.C under reflux for 10 hr, cooling to room temperature under nitrogen atmosphere, filtering, washing with anhydrous acetonitrile, and drying at 110 deg.C for 10 hr.
The ionic liquid modified porous electrode material and the button cell lead are sewn inside by two layers of dustproof and air-tight cloth, the ionic liquid modified porous electrode material connected with the negative electrode is arranged on the outer side, and the ionic liquid modified porous electrode material connected with the positive electrode is arranged on the inner side.
The filter assembly prepared by the embodiment is used for filtering non-oily NaCl aerosol, the air flow is controlled to be (85 +/-2) L/min, the particle size is controlled to be (0.075 +/-0.020) mu m, and the aerosol filtering effect is detected; then testing the virus filtering effect by using a PK-174 mask Virus Filtering Efficiency (VFE) tester; the filtering efficiency of aerosol and virus is up to more than 99 percent; the filtered gas meets the standard that the particle filtering efficiency of the mask filter material of GB19083-2010 medical protective mask technical requirement is not less than 95%.
Claims (6)
1. A filter assembly based on ionic liquid and micro-electric field is characterized in that: the button cell comprises a button cell, a flexible conductive anode and a flexible conductive cathode, wherein the flexible conductive anode and the flexible conductive cathode are respectively connected with the button cell.
2. The ionic liquid and micro-electric field based filter assembly according to claim 1, wherein the flexible conductive positive electrode or the flexible conductive negative electrode is prepared by the following method:
(1) grinding a conductive material until the particle size is smaller than 200 meshes, placing the ground material in an ethanol solution with the mass concentration of 5-20%, stirring and mixing uniformly at 200-1200 rpm, adding a PTFE emulsion with the mass of 2-10% of the mixture and active alumina with the mass of 5-10% of the mixture, stirring for 5-30 min at 200-1200 rpm, continuing stirring and mixing for 30-60 min at 30-70 ℃ to obtain mixed slurry, placing the mixed slurry under a pair roller machine, repeatedly rolling the mixed slurry into a sheet with the thickness of 1-2 mm, and drying to obtain a flexible electrode;
(2) adding 0.1-1 g of CaH into 100mL of acetonitrile2Stirring and refluxing the mixture for reaction for 10 to 12 hours at the temperature of 70 to 85 ℃ in an oil bath, and cooling the mixture to normal temperature to prepare anhydrous acetonitrile; the flexible electrode is dried for 0.5-1 h at 50-80 ℃ in a nitrogen atmosphere, after the nitrogen atmosphere is reduced to room temperature, ionic liquid and anhydrous acetonitrile are added, reflux stirring is carried out for 8-12 h at 80-90 ℃, the temperature is reduced to room temperature in the nitrogen atmosphere, filtering is carried out, anhydrous acetonitrile is used for washing, and finally drying is carried out for 8-12 h at 100-120 ℃.
3. The ionic liquid and micro-electric field based filtration assembly of claim 2, wherein: the conductive material is one of porous carbon, porous carbon silicon, graphene, carbon nano tube, fullerene, silver and copper.
4. The ionic liquid and micro-electric field based filtration assembly of claim 2, wherein: the ionic liquid is [ Hmim ]]Tf2N、[Hmim]CuCl2、[Hmim]FeCl4One kind of (1).
5. The ionic liquid and micro-electric field based filtration assembly of claim 2, wherein: the volume ratio of the ionic liquid to the anhydrous acetonitrile is 1-5: 10-20.
6. A mask comprising the ionic liquid and micro-electric field based filter assembly of any one of claims 1-5.
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| JP2003003078A (en) * | 2000-09-19 | 2003-01-08 | Nisshinbo Ind Inc | Ion-conductive composition, gel elecrolyte, and non- aqueous electrolytic cell and electric double layer capacitor |
| WO2016203269A1 (en) * | 2015-06-18 | 2016-12-22 | Imperial Innovations Limited | 2-dimensional carbon material |
| CN107922193A (en) * | 2015-06-18 | 2018-04-17 | 帝国创新有限公司 | Two-dimentional carbon material |
| CN105304906A (en) * | 2015-09-24 | 2016-02-03 | 山东润昇电源科技有限公司 | Flexible lithium ion battery cathode and manufacturing method thereof |
| CN111740075A (en) * | 2020-06-16 | 2020-10-02 | 南方科技大学 | Flexible electrode and flexible battery based on carbonized silk fabric |
| CN111772269A (en) * | 2020-07-13 | 2020-10-16 | 东北大学秦皇岛分校 | Recyclable medical mask based on flexible super-electric structure and preparation method thereof |
| CN112300577A (en) * | 2020-11-20 | 2021-02-02 | 苏州裕融电子材料有限公司 | Hot-pressing buffering silicone rubber sheet and manufacturing method thereof |
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