WO2021172794A1 - Film permettant de bloquer simultanément des polluants atmosphériques et son procédé de fabrication - Google Patents

Film permettant de bloquer simultanément des polluants atmosphériques et son procédé de fabrication Download PDF

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Publication number
WO2021172794A1
WO2021172794A1 PCT/KR2021/001722 KR2021001722W WO2021172794A1 WO 2021172794 A1 WO2021172794 A1 WO 2021172794A1 KR 2021001722 W KR2021001722 W KR 2021001722W WO 2021172794 A1 WO2021172794 A1 WO 2021172794A1
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group
porous substrate
barrier film
chitosan
nafion
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PCT/KR2021/001722
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English (en)
Korean (ko)
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손영환
손지훈
이성민
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네오에스티지 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing

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  • the present invention relates to a simultaneous barrier membrane for air pollutants and a method for manufacturing the same, and more particularly, a porous inorganic material is laminated on a porous substrate cross-laminated with a positive electrode material and a negative electrode material, and a thin film is formed on a complex matrix of the porous substrate. It relates to a barrier film capable of simultaneously blocking air pollutants, and a method for manufacturing the same.
  • Air pollutants are generated in a wide variety of places such as automobiles, workplaces, home heating, power generation facilities, and incineration facilities.
  • "Air pollutant emission" calculated by the Ministry of Environment is an air pollutant composed of particulate matter and gaseous matter emitted from most processes while having a high impact on air pollution in the workplace. based on emissions.
  • fine dust is inevitably generated as the industry develops and constitutes the main type of air pollution, and the most harmful fine dust to the human body is the combustion process of liquid and solid fuels, incineration processes, iron and steel making processes, and cement manufacturing processes.
  • the fine dust particles contain a very high concentration of heavy metal substances, and not only cause serious damage due to deposition in the human respiratory tract and the human body during respiration, but also cause soil contamination by remaining in the soil.
  • legislation to strengthen the emission standards in the long term is foretold, it is required to maintain the dust emission concentration at a much lower level than the currently applied dust emission regulations.
  • Fine dust is emitted in a solid state from a chimney, etc. or is emitted in a gaseous state from a source and is produced by chemical reaction with other substances. It is important to remove sulfur oxides and nitrogen oxides.
  • gaseous air pollutants such as carbon dioxide, carbon monoxide, radon, formaldehyde, volatile organic compounds and organic aromatic compounds exist in indoor air.
  • radon causes 3 to 14% of lung cancers worldwide and is the second most potent lung cancer inducer after sputum.
  • Pollutant discharge facilities meet air pollution emission and recommended standards by applying treatment methods suitable for the characteristics of these various pollutants.
  • Particulate matter is removed by electricity, filtration, washing dust collection, centrifugal force dust collection, gravity dust collection, etc. according to particle size distribution and specific gravity, etc., and gaseous substances are treated by incineration, absorption, adsorption, separation membrane, catalytic oxidation method, biological treatment method, etc.
  • Korean Patent Laid-Open Publication No. 2010-0106281 discloses a filter capable of simultaneously removing fine dust and harmful gases coated with an oxidation catalyst, and in Korean Utility Registration No. 0371598, a mixture of granular activated carbon and an adhesive is uniformly sprayed on the filter substrate. After drying, a medium filter capable of removing fine dust, odor, and harmful gas contained in the manufactured air by cutting it to a predetermined size and combining it with a frame is disclosed. Only the effect has been confirmed, and the blocking effect on radon or carbon dioxide, which are harmful indoor gases, has not been confirmed.
  • each filter is applied to increase the annual filter usage and increase the generation of waste such as HEPA filters and activated carbon.
  • a general mask removes only fine dust
  • indoor and outdoor pollutants simultaneously remove air pollutants because they distribute not only fine dust emitted directly from the emission source, but also fine dust that is secondary to gaseous substances through photochemical reactions.
  • the effect of harmful substances can be reduced with a mask that applies a blocking film.
  • the present inventors made diligent efforts to develop a barrier film that can block air pollutants and contaminants at the same time.
  • the porous substrate is laminated with a porous inorganic material and a bipolar material (BPEI, etc.) and a cathode material (PAA, etc.)
  • BPEI bipolar material
  • PAA cathode material
  • An object of the present invention is to provide a method for manufacturing a barrier film capable of simultaneously blocking air pollutants.
  • Another object of the present invention is to provide a barrier film capable of simultaneously blocking air pollutants.
  • Another object of the present invention is to provide a mask for blocking air pollutants equipped with the blocking film.
  • Another object of the present invention is to provide a gas filtration system equipped with the barrier membrane.
  • Another object of the present invention is to provide an air pollutant emission prevention system of an air pollutant discharge workplace equipped with a barrier film.
  • the present invention comprises the steps of: (a) cross-stacking an anode material and a cathode material n times (n is an integer of 1 to 10), respectively, on a porous substrate; and
  • the present invention also provides that a porous inorganic material is laminated on a porous substrate in which the positive electrode material and the negative electrode material are each n times (n is an integer of 1 to 10), and a thin film is formed in the matrix of the porous substrate. It provides a barrier film capable of simultaneously blocking air pollutants characterized by the present invention.
  • the present invention also includes the steps of: (a) cross-stacking a positive electrode material and a negative electrode material on a porous substrate n times (n is an integer of 1 to 10), respectively; and
  • the anode material and the anode material are each stacked n times (n is an integer of 1 to 10) on the porous substrate, and the anode polymer and graphene are laminated to form a thin film on the matrix of the porous substrate. It provides a barrier film that can block air pollutants at the same time, characterized in that the
  • the present invention also includes the steps of: (a) cross-stacking a positive electrode material and a negative electrode material on a porous substrate n times (n is an integer of 1 to 10), respectively; and
  • the present invention also provides a porous inorganic material and carbon nanotubes stacked on a porous substrate in which the positive electrode material and the negative electrode material are cross-stacked n times (n is an integer of 1 to 10, respectively, to form a thin film on the matrix of the porous substrate) It provides a barrier film that can block air pollutants at the same time, characterized in that the
  • the present invention also provides a mask for blocking air pollutants equipped with the blocking film.
  • the present invention also provides a gas filtration system equipped with the barrier membrane.
  • the present invention also provides an air pollutant discharge prevention system of an air pollutant discharge workplace equipped with a barrier film.
  • the blocking membrane according to the present invention can simultaneously remove air pollutants with one filter, and can be used semi-permanently by physically removing air pollutants accumulated on the plane of the blocking membrane, and can be used as an eco-friendly filtration system with less waste do.
  • FIG 1 shows the lamination process of the air pollutant simultaneous removal blocking film according to the present invention.
  • Figure 2 shows the lamination process of the air pollutant simultaneous removal blocking film according to the present invention.
  • FIG 3 shows an electron micrograph of the air pollutant simultaneous removal blocking film according to the present invention.
  • Figure 4 shows the oxygen permeability measurement result of the air pollutant simultaneous removal blocking membrane according to the present invention.
  • FIG 5 shows the carbon dioxide removal rate of the air pollutant simultaneous removal blocking membrane according to the present invention.
  • FIG 6 shows the carbon dioxide removal rate according to the manufacturing method of the air pollutant simultaneous removal blocking film according to the present invention.
  • FIG. 7 is a view showing the carbon dioxide removal rate of the air pollutant blocking film laminated with carbon nanotubes according to the present invention.
  • Existing gas barrier membranes for blocking gaseous substances are made of organic/inorganic hybrid permeable membranes using non-porous organic materials or porous inorganic materials to control gas permeability to form double, triple or more structures for each layer.
  • a film was formed, and the film formation process had to proceed with complex pre-treatment and post-treatment such as deposition process under high vacuum, ultraviolet light, plasma treatment, etc. to form a complete thin film.
  • a porous substrate having a network structure is used, and an organic matrix is first formed thereon, and Layer-By such as dipping, spray coating, spin coating, etc.
  • Layer-By such as dipping, spray coating, spin coating, etc.
  • LBL layer assembly
  • a barrier film for simultaneous removal of air pollutants was manufactured by a manufacturing method of adding inorganic substances secondarily, and no post-treatment is required, and the barrier film manufactured according to the present invention is fine dust
  • the removal rate is excellent, and while oxygen permeates, selective gas permeation is possible to block various air pollutants including carbon dioxide and radon, and it has excellent removal efficiency.
  • the present invention in one aspect, (a) cross-stacking the positive electrode material and the negative electrode material on a porous substrate n times (n is an integer of 1 to 10), respectively;
  • the barrier film capable of simultaneously blocking air pollutants of the present invention comprises the steps of: (i) laminating an anode or cathode material on a porous substrate; (ii) in step (i), when a positive electrode material is laminated, a negative electrode material is secondarily laminated, and when a negative electrode material is laminated, a positive electrode material is secondarily laminated; (iii) when the anode material is secondarily laminated on the porous substrate in step (ii), the anode material is thirdly laminated, and when the porous substrate is secondarily laminated with the anode material, the anode material is thirdly laminated step; and (iv) stacking a porous inorganic material on a tertiary laminated porous substrate to obtain a barrier film against air pollutants at the same time, and the steps (i) to (ii) are repeated 0 to 10 times. It is preferable to carry out, and more preferably, it can be carried out by repeating 1 (3) to 5 times by the
  • the barrier film capable of blocking air pollutants at the same time is first laminated with a positive electrode material on a porous substrate, the positive electrode material is laminated on the substrate, the negative electrode material is secondarily laminated, and then the positive electrode material is thirdly laminated
  • a barrier film against air pollutants can be obtained at the same time.
  • the tertiary lamination and lamination of the porous inorganic material may be performed.
  • a HEPA filter with a porous filter is dipped in 0.1wt% BPEI (Branched-Polyethylenimine) solution for 1 to 2 minutes, and distilled water washed. Thereafter, 0.2wt% PAA (Polyacrylic acid, poly(1-carboxyethylene)) was also dipped in the same manner and washed with distilled water.
  • BPEI Branched-Polyethylenimine
  • dipping 0.1wt% of BPEI is performed, and finally, dipping with 1wt% VMT of inorganic porous inorganic material for 1 ⁇ 2 minutes, washing and drying at room temperature to produce a barrier film (1QL), (The barrier film (1QL) was produced by drying the air for 30 seconds), and the first cycle solution was dipping for 1 to 2 minutes to adsorb a large amount of polymers and inorganic porous inorganic substances. From the cycle, the dipping time was reduced to 5 to 10 seconds in order to reduce the formation of a thick layer and process time.
  • n means the number of stacking methods between + and - property polymers, and n is expressed as Bi, Quad, Hex, Oct, etc. in order from 0.
  • the H13 filter is used as the porous substrate to be used for the blocking film, but it is not limited to the HEPA filter and can be applied to most filters and substrates with good air permeability such as porous substrates.
  • the positive electrode material according to the present invention is BPEI (Branched, Polyethylenimine) , chitosan (Chitosan, CHI), PDDA (diallyldimethylammonium chloride), PEO (Polyethyloxide), CNC (Cellulose nanocrystal) and PVA (Polyvinyl alcohol) from the group consisting of It may be characterized as a material selected, the negative electrode material is PAA (Polyacrylic acid (poly(1-carboxyethylene), LDH (Layered double hydroxide)), Nylon, Nafion, Polyethylene, Polypropylene, Polystyrene Sulfonate, and inorganic in aqueous solution state It is a solution in which carbon materials (CNT, Graphene, etc.) are dispersed in porous inorganic materials and anode materials. It may be characterized as a material selected from the group consisting of.
  • PAA Polyacrylic acid (poly(1-carbox
  • the barrier film according to the present invention has a property of blocking air pollutants and transmitting oxygen.
  • the lamination may be performed by a method selected from the group consisting of dipping, spray coating, and spin coating.
  • a barrier film capable of simultaneously blocking air pollutants can be manufactured simply and economically, and a porous organic/inorganic hybrid gas barrier layer is formed to have various gas barrier effects. It is possible to simultaneously control various gaseous pollutants including fine dust by forming electrostatic attraction, hydrogen bonding, ionic bonding, etc. using organic/inorganic polarity and structural properties and stacking them on a porous substrate.
  • the porous substrate used in the present invention may use a fibrous filter having a network structure, and the like, but is not limited thereto, and an amine (-N), hydroxy (-OH), carboxyl group to form an organic/inorganic hybrid gas permeable membrane. It is preferable to use a substrate comprising (-COOH) and aldehyde (-COH) groups.
  • a permeable membrane by dispersing carbon materials (graphene, carbon nanotubes, acid/reduced graphene oxide, etc.) in organic/inorganic materials to increase the blocking and absorption of fine dust and gas.
  • samples having positive (+) and negative (-) polarity properties include materials capable of ions, covalent, hydrogen bonding, such as amine (RN), hydroxy (-OH), and positive (+) BPEI (Branched, Polyethylenimine, CHI (Chitosan), PDDA (Poly (diallyldimethylammonium chloride)), PEO (Polyethyloxide), CNC (Cellulose nanocrystal) and PVA (Polyvinyl alcohol) and PAA (Polyacrylic) with negative properties Acid (poly(1-carboxyethylene), LDH (Layered double hydroxide), Nylon, Nafion, Polyethylene, Polypropylene, Polystyrene Sulfonate, inorganic porous inorganic substances in aqueous solution, and carbon materials (CNT, Graphene, etc.) are dispersed in the negative electrode material. solution may be used.
  • the inorganic porous inorganic material used in the present invention comprises at least one selected from the group consisting of alumina, zirconia, silicon oxide, magnesium oxide, and calcium oxide.
  • a material including, bentonite (Bentonite, BNT), montmorillonite (MMT), vermiculite (VMT), etc. may be used, but the present invention is not limited thereto.
  • the present invention is a porous inorganic material is laminated on a porous substrate in which the positive electrode material and the negative electrode material are each n times (n is an integer of 1 to 10), a thin film is formed in the pores of the porous substrate, It relates to a barrier film that can block air pollutants at the same time, characterized in that there is.
  • the positive electrode material according to the present invention is BPEI (Branched, Polyethylenimine) , chitosan (Chitosan, CHI), PDDA (diallyldimethylammonium chloride), PEO (Polyethyloxide), CNC (Cellulose nanocrystal) and PVA (Polyvinyl alcohol) from the group consisting of It may be characterized as a material selected, the negative electrode material is PAA (Polyacrylic acid (poly(1-carboxyethylene), LDH (Layered double hydroxide)), Nylon, Nafion, Polyethylene, Polypropylene, Polystyrene Sulfonate, and inorganic in aqueous solution state It is a solution in which carbon materials (CNT, Graphene, etc.) are dispersed in porous inorganic materials and anode materials. It may be characterized as a material selected from the group consisting of.
  • PAA Polyacrylic acid (poly(1-carbox
  • the present invention comprises the steps of: (a) cross-stacking a positive electrode material and a negative electrode material on a porous substrate n times (n is an integer of 1 to 10), respectively; and (b) stacking a material in which graphene is dispersed in an anode polymer on a porous substrate in which a positive electrode material and a negative electrode material are cross-laminated n times (n is an integer of 1 to 10) on the porous substrate to form an air pollutant blocking film
  • It relates to a method for producing a barrier film capable of simultaneously blocking air pollutants, including the step of obtaining.
  • an H13 filter was dipped in 0.1wt% BPEI (Branched-Polyethylenimine) solution as a porous filter, and washed with tertiary distilled water. Thereafter, 0.1 g of graphene (graphenol, Korea) was dispersed in 0.2 wt% of polyacrylic acid (PAA) for the same time and dipping was performed for the same time, followed by washing again.
  • PPA polyacrylic acid
  • the present invention provides a porous substrate in which the anode material and the anode material are laminated n times (n is an integer of 1 to 10), respectively, the anode polymer and graphene are laminated on the matrix of the porous substrate. It relates to a barrier film capable of simultaneously blocking air pollutants, characterized in that a thin film is formed.
  • the present invention comprises the steps of: (a) cross-stacking a positive electrode material and a negative electrode material on a porous substrate n times (n is an integer of 1 to 10), respectively; and (b) an air pollutant blocking film with adsorption properties added by laminating a porous inorganic material in which carbon nanotubes are dispersed on a porous substrate in which a bipolar material and a porous inorganic material are cross-laminated n times (n is an integer of 1 to 10) on the porous substrate It relates to a method for producing a barrier film capable of simultaneously blocking air pollutants, including the step of obtaining a.
  • the H13 filter was dipped in 0.1wt% BPEI (branched-polyethylenimine) solution, and washed with tertiary distilled water. Thereafter, dipping and washing were repeated in 1 wt% vermiculite (VMT). Again, 0.1 wt% BPEI solution of positive (+) polarity was dipping in the same way, followed by washing, and finally, 0.1 g of carbon nanotubes (CNT) (Hyosung, Korea) was dispersed in the solution, followed by dipping and washing in the same manner as above to prepare a barrier film in which carbon nanotubes (CNTs) were laminated.
  • BPEI branched-polyethylenimine
  • the present invention also provides a porous inorganic material and a carbon nanotube are laminated on a porous substrate in which the positive electrode material and the negative electrode material are each n times (n is an integer of 1 to 10). It relates to a barrier film capable of simultaneously blocking air pollutants, characterized in that a thin film is formed in a matrix.
  • carbon dioxide as the adsorption property of carbon nanotubes when prepared in a Quad-Layer system by further dipping a solution in which carbon nanotubes are dispersed in a porous inorganic material in addition to a Bi-Layer system using only a conventional polymer and a porous inorganic material It was confirmed that the removal efficiency was further improved (FIG. 7).
  • the present invention relates to a mask for blocking air pollutants equipped with the blocking film.
  • the present invention relates to a gas filtration system equipped with the barrier membrane.
  • the present invention relates to an air pollutant emission prevention system of an air pollutant emission workplace equipped with the barrier film.
  • Example 1 Manufacture of a simultaneous barrier film for air pollutants
  • H13 filter (Welcron, Korea) based on a functional filter was used as a porous substrate to be used for the production of the barrier film.
  • the lamination solution to be laminated on the filter is a 0.1wt% BPEI (Branched-Polyethylenimine) solution, which is a sample having an anode property, and a 0.2wt% PAA (Polyacrylic acid, poly(1-carboxyethylene)) solution, a sample having a cathode property.
  • BPEI Branched-Polyethylenimine
  • PAA Polyacrylic acid, poly(1-carboxyethylene)
  • the prepared lamination solution is administered in an amount sufficient to submerge the H13 filter substrate in the lamination container, and the substrate is first dipping in 0.1wt% BPEI solution of positive (+) polarity for 1 to 2 minutes, and , and washed 2-3 times in tertiary distilled water (Deionized Water) for 20 seconds each. Second, in the same manner as in the first solution, dipping in a 0.2 wt% PAA solution of negative (-) polarity for 1 to 2 minutes, followed by washing with distilled water in the same manner as in the first solution.
  • n means the number of stacking methods between + and - property polymers, and n is expressed as Bi, Quad, Hex, Oct, etc. in order from 0.
  • 8-10BL and 5QL simultaneous blocking films were manufactured.
  • Example 2 In the same manner as in Example 1, the H13 filter was dipped in 0.1wt% BPEI (Branched-Polyethylenimine) solution for 1-2 minutes with a porous substrate, and washed 2-3 times with tertiary distilled water (18.2M ⁇ ) for 20 seconds. . Thereafter, 0.1 g of graphene (graphenol, Korea) was dispersed in 0.2 wt% of polyacrylic acid (PAA) for the same time and dipping was performed for the same time, followed by washing again.
  • BPEI Branched-Polyethylenimine
  • Example 2 In the same manner as in Example 1, the H13 filter with a porous substrate was dipped in 0.1wt% BPEI (branched-polyethylenimine) solution for 1-2 minutes, and washed 2-3 times with tertiary distilled water (18.2M ⁇ ) for 20 seconds. . After that, dipping and washing with 1wt% of vermiculite (VMT) are repeated for the same time.
  • BPEI branched-polyethylenimine
  • 0.1 wt% BPEI solution of positive (+) polarity was dipping in the same way for 1 to 2 minutes, followed by washing, and finally, 0.1 g of carbon nanotubes (CNT) in 1 wt% montmorolite (MMT). (Hyosung, Korea) was dipping and washing in the same manner as in the above-dispersed solution to prepare a barrier film in which carbon nanotubes (CNTs) were laminated.
  • MMT montmorolite
  • oxygen permeability of the barrier film was measured using an oxygen permeability measuring device (OX-TRAN Model 2/22 H, MOCON, USA).
  • the first cycle solution was dipping for 1 to 2 minutes, and from the second cycle, the dipping time was reduced to 5 to 10 seconds to reduce the formation of a thick layer and process time.
  • the same washing time was performed 3 times for 20 seconds each. The same method was repeated 3 to 5 times to form a blocking film.
  • Air Purifier Association Indoor Air Purifier Test Method using cigarette smoke at an air volume of 0.90 m3/min in a chamber of 0.45 m, 0.45 mx 0.45 mx 0.45 m and a flat membrane of 0.1 mx 0.1 m (10BL) manufactured in Preparation Example (SPS- KACA002-132) was used to test the removal rate of fine dust.
  • Simultaneous blocking film (10BL) prepared in Preparation Example The carbon dioxide removal experiment was carried out with the Air Purifier Association Indoor Air Purifier Test Method (SPS-KACA002-132) for 30 minutes with a 0.45 m, 0.45 mx 0.45 mx 0.45 m chamber air volume of 0.90 m3/min.
  • SPS-KACA002-132 Air Purifier Association Indoor Air Purifier Test Method
  • a radon removal experiment was conducted for 3 hours using a radon analyzer (RD200, Korea) with an air flow rate of 0.90 m3/min in a 0.45 m, 0.45 mx 0.45 mx 0.45 m chamber with a 0.1 mx 0.1 m flat membrane prepared in Preparation Example. did.
  • the simultaneous blocking film transmits only oxygen and blocks even radon, a radioactive material having a molecular weight of oxygen or higher, confirming the possibility of removing various gaseous substances.
  • a 10BL blocking film and a 5QL blocking film were respectively prepared by the method of Preparation Example, and the respective carbon dioxide removal rates were compared.
  • Air Purifier Association Indoor Air Purifier Test Method SPS-KACA002-132 for 10 minutes at 0.90 m3/min in air volume in 0.45 m, 0.45 mx 0.45 mx 0.45 m chamber using a 10BL blocking film and 5QL blocking film ) to carry out a carbon dioxide removal experiment.
  • the flat membrane of 0.1 m x 0.1 m is 0.45 m, 0.45 m x 0.45 m x 0.45 m, and the air volume in the chamber is 0.90 m 3 / min for 10 minutes.
  • Carbon dioxide removal experiment was conducted by the Association of Indoor Air Purifier Test Method (SPS-KACA002-132).

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un film permettant de bloquer simultanément des polluants atmosphériques et son procédé de fabrication. Le film bloquant selon la présente invention peut filtrer simultanément des polluants atmosphériques en utilisant un seul filtre, peut éliminer physiquement les polluants atmosphériques accumulés sur la surface plate du film bloquant de façon à permettre une utilisation semi-permanente, et peut être utilisé comme système de filtration écologique qui génère moins de déchets.
PCT/KR2021/001722 2020-02-25 2021-02-09 Film permettant de bloquer simultanément des polluants atmosphériques et son procédé de fabrication WO2021172794A1 (fr)

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CN116003785A (zh) * 2022-12-12 2023-04-25 惠州学院 一种甲醛检测用气敏材料及其制备方法

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CN113398769B (zh) * 2021-04-29 2022-08-02 西南石油大学 一种抗原油污染的CS-CNCs多层改性膜及其制备方法和应用
KR102341929B1 (ko) * 2021-05-26 2021-12-22 네오에스티지 주식회사 공기 정화 살균 시스템

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WO2015187412A1 (fr) * 2014-06-04 2015-12-10 The Research Foundation For The State University Of New York Matériaux à réseau fibreux hautement poreux pour filtration de gaz
KR20170021295A (ko) * 2014-06-27 2017-02-27 다우 글로벌 테크놀로지스 엘엘씨 차단성 필름, 그 제조 방법들, 및 차단성 필름을 포함하는 물품들
KR20180000781A (ko) * 2016-06-23 2018-01-04 중앙대학교 산학협력단 다층 나노 박막 및 이의 제조방법
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KR102154078B1 (ko) * 2020-02-25 2020-09-09 네오에스티지 주식회사 대기오염물질의 동시 차단막 및 이의 제조방법

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CN114632432B (zh) * 2022-02-25 2024-05-24 武汉理工大学 二维通道有序性强化的蛭石/蒙脱石提锂薄膜的制备方法
CN116003785A (zh) * 2022-12-12 2023-04-25 惠州学院 一种甲醛检测用气敏材料及其制备方法

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