CN108619827A - A kind of nanofiber composite filtering film - Google Patents

A kind of nanofiber composite filtering film Download PDF

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Publication number
CN108619827A
CN108619827A CN201810524102.1A CN201810524102A CN108619827A CN 108619827 A CN108619827 A CN 108619827A CN 201810524102 A CN201810524102 A CN 201810524102A CN 108619827 A CN108619827 A CN 108619827A
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nanofibers
layers
layer
nanofiber
composite filtering
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杨刚坤
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Foshan Day Saint Science & Technology Co Ltd
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Foshan Day Saint Science & Technology Co Ltd
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Priority to CN201810524102.1A priority Critical patent/CN108619827A/en
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    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B32B2262/0238—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention provides a kind of nanofiber composite filtering film, the nanofiber composite filtering film is prepared by electrostatic spinning, includes successively：Film supporting layer, nonwoven layer, coarse filtration layer, layers of nanofibers, polyvinylidene fluoride coating are connected with each other between each layer；Wherein, a diameter of 0.1 1mm of the filter hole of the coarse filtration layer；The layers of nanofibers includes the first layers of nanofibers, the second layers of nanofibers and third layers of nanofibers successively, and first layers of nanofibers is formed on the surface of the coarse filtration layer；A diameter of 20 50 μm of hole in first layers of nanofibers between nanofiber, a diameter of 1 20 μm of hole in second layers of nanofibers between nanofiber, a diameter of 0.01 1 μm of hole in the third layers of nanofibers between nanofiber.The Nanofiber filter membrane structure large specific surface area of the present invention increases air circulation path, increases particulate matter storage space, prolongs the service life while so that the raising of filter membrane filter efficiency and air drag is reduced.

Description

A kind of nanofiber composite filtering film
Technical field
The present invention relates to air purification filter technical field more particularly to a kind of nanofiber composite filtering films.
Background technology
Conventional nonwoven filtering material is widely used in various filtering products, such as：Glass fibre, polypropylene are fine Dimension, polyester fiber and polytetrafluoroethylene fibre etc. have obtained wide in the products such as air purifier, automobile air conditioner filter element and mask General application.But the fibre diameter of conventional nonwoven filtering material is larger, the filtering hole that fiber accumulations are formed is larger, right It is poor compared with the strainability of small size particle.Therefore more effective air filting material is needed to filter finely ground particles.
Nanofiber prepared by electrostatic spinning has that fibre diameter is small, aperture is small, porosity is high, large specific surface area etc. is excellent The composite filter material of itself and the compound preparation of non-woven filter material base material is had preferable filter efficiency, wherein non-knit by point Make the larger particulate matter of filtering material base material main filtration grain size, electrospun fibers layer main filtration grain size smaller particle object, Such composite filter material has huge application value and foreground in field of air filtration.Currently, electrostatic spinning spinning is received Rice fibre structure has solid round cross section, bead, flat or band-like etc., although existing nanofiber has different fiber knots Structure, but its filter membrane still has filter efficiency is relatively low, air drag is larger and service life is short problem.How to improve Filter efficiency and reduce air drag while extend filter membrane service life, be in current fiber filter material technology of preparing urgently The technical barrier that need to be solved.
Invention content
In order to solve the above technical problem, the present invention provides a kind of nanofiber composite filtering film, the nanofibers Composite filtering film is prepared by electrostatic spinning, includes successively：Film supporting layer, nonwoven layer, coarse filtration layer, layers of nanofibers, Polyvinylidene fluoride coating is connected with each other between each layer；
Wherein, a diameter of 0.1-1mm of the filter hole of the coarse filtration layer；
The layers of nanofibers successively include the first layers of nanofibers, the second layers of nanofibers and third layers of nanofibers, First layers of nanofibers is formed on the surface of the coarse filtration layer；
A diameter of 20-50 μm of hole in first layers of nanofibers between nanofiber, second nanofiber A diameter of 1-20 μm of hole in layer between nanofiber, the diameter in the hole in the third layers of nanofibers between nanofiber It is 0.01-1 μm.
Further, it is linked together by way of suture between each layer.
Further, nano granular of zinc oxide solution is coated between each layer, in the nano zine oxide As the binder between each layer after grain solution drying.
Further, the material of the coarse filtration layer be polyethylene terephthalate, polyacrylonitrile, polystyrene, Polybutylene terephthalate or Kynoar.
Further, the inside of the layers of nanofibers is attached with carbon nanotube or redox graphene.
Further, the material of the film supporting layer is polypropylene, polysulfones, Kynoar, polytetrafluoroethylene (PTFE), poly- hydroxyl Any one in butyrate, polyacrylonitrile or two or more mixtures.
Further, the shape of the film supporting layer is nano fibrous membrane, plate membrane or hollow-fibre membrane.
Further, first layers of nanofibers, second layers of nanofibers and the third layers of nanofibers phase Mutual arranged crosswise.
The Nanofiber filter membrane structure large specific surface area of the present invention, increases air circulation path, increases particulate matter Storage space prolongs the service life while so that filter membrane filter efficiency is improved with air drag reduction, synthetic filter performance Filtering material is answered better than existing nanofiber.
The nanofiber composite filter material of the present invention has both filtration efficiency and low-drag, and the longevity is used with duration Life is widely used value in field of air filtration, has pole on the products such as air purifier, car filters filter core, mask Big application prospect.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter The above and other objects, advantages and features of the present invention.
Description of the drawings
Some specific embodiments that the invention will be described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter. Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic diagram of nanofiber composite filtering film according to an embodiment of the invention.
Specific implementation mode
Embodiment 1：
Fig. 1 shows the schematic diagram of nanofiber composite filtering film according to an embodiment of the invention.Such as Fig. 1 Shown, the nanofiber composite filtering film, the nanofiber composite filtering film is prepared by electrostatic spinning, is wrapped successively It includes：Film supporting layer 1, nonwoven layer 2, coarse filtration layer 3, layers of nanofibers 4, polyvinylidene fluoride coating 5, between each layer mutually Connection；Wherein, a diameter of 0.1mm of the filter hole of the coarse filtration layer 3；The layers of nanofibers 4 includes first nanometer successively Fibrous layer 4, the second layers of nanofibers 4 and third layers of nanofibers 4, first layers of nanofibers 4 are formed in the coarse filtration On the surface of layer 3；A diameter of 50 μm of hole in first layers of nanofibers 4 between nanofiber, second Nanowire Tie up the hole in layer 4 between nanofiber a diameter of 20 μm, hole in the third layers of nanofibers 4 between nanofiber it is straight Diameter is 1 μm.
It is linked together by way of suture between each layer.The material of the coarse filtration layer 3 is poly- to benzene two Formic acid glycol ester.The inside of the layers of nanofibers 4 is attached with carbon nanotube.The material of the film supporting layer 1 is polypropylene. The shape of the film supporting layer 1 is nano fibrous membrane.First layers of nanofibers 4, second layers of nanofibers 4 and described Third layers of nanofibers 4 intersects arrangement.
Embodiment 2：
Fig. 1 shows the schematic diagram of nanofiber composite filtering film according to an embodiment of the invention.Such as Fig. 1 Shown, the nanofiber composite filtering film, the nanofiber composite filtering film is prepared by electrostatic spinning, is wrapped successively It includes：Film supporting layer 1, nonwoven layer 2, coarse filtration layer 3, layers of nanofibers 4, polyvinylidene fluoride coating 5, between each layer mutually Connection；Wherein, a diameter of 1mm of the filter hole of the coarse filtration layer 3；The layers of nanofibers 4 includes the first Nanowire successively Dimension layer 4, the second layers of nanofibers 4 and third layers of nanofibers 4, first layers of nanofibers 4 are formed in the coarse filtration layer 3 Surface on；A diameter of 20 μm of hole in first layers of nanofibers 4 between nanofiber, second layers of nanofibers A diameter of 1 μm of hole in 4 between nanofiber, hole in the third layers of nanofibers 4 between nanofiber it is a diameter of 0.5μm。
Nano granular of zinc oxide solution is coated between each layer, to be dried in the nano granular of zinc oxide solution Later as the binder between each layer.The material of the coarse filtration layer 3 is polyacrylonitrile.The layers of nanofibers 4 it is interior Portion is attached with redox graphene.The material of the film supporting layer 1 is Kynoar.The shape of the film supporting layer 1 is Hollow-fibre membrane.First layers of nanofibers 4, second layers of nanofibers 4 and the third layers of nanofibers 4 are mutually handed over Fork arrangement.
Embodiment 3：
Fig. 1 shows the schematic diagram of nanofiber composite filtering film according to an embodiment of the invention.Such as Fig. 1 Shown, the nanofiber composite filtering film, the nanofiber composite filtering film is prepared by electrostatic spinning, is wrapped successively It includes：Film supporting layer 1, nonwoven layer 2, coarse filtration layer 3, layers of nanofibers 4, polyvinylidene fluoride coating 5, between each layer mutually Connection；Wherein, a diameter of 0.5mm of the filter hole of the coarse filtration layer 3；The layers of nanofibers 4 includes first nanometer successively Fibrous layer 4, the second layers of nanofibers 4 and third layers of nanofibers 4, first layers of nanofibers 4 are formed in the coarse filtration On the surface of layer 3；A diameter of 30 μm of hole in first layers of nanofibers 4 between nanofiber, second Nanowire Tie up the hole in layer 4 between nanofiber a diameter of 10 μm, hole in the third layers of nanofibers 4 between nanofiber it is straight Diameter is 0.25 μm.
Nano granular of zinc oxide solution is coated between each layer, to be dried in the nano granular of zinc oxide solution Later as the binder between each layer.The material of the coarse filtration layer 3 is polystyrene.The layers of nanofibers 4 it is interior Portion is attached with carbon nanotube.The material of the film supporting layer 1 is poly butyric ester.The shape of the film supporting layer 1 is tablet Film.First layers of nanofibers 4, second layers of nanofibers 4 and the third layers of nanofibers 4 intersect arrangement.
Embodiment 4：
Fig. 1 shows the schematic diagram of nanofiber composite filtering film according to an embodiment of the invention.Such as Fig. 1 Shown, the nanofiber composite filtering film, the nanofiber composite filtering film is prepared by electrostatic spinning, is wrapped successively It includes：Film supporting layer 1, nonwoven layer 2, coarse filtration layer 3, layers of nanofibers 4, polyvinylidene fluoride coating 5, between each layer mutually Connection；Wherein, a diameter of 0.25mm of the filter hole of the coarse filtration layer 3；The layers of nanofibers 4 includes first nanometer successively Fibrous layer 4, the second layers of nanofibers 4 and third layers of nanofibers 4, first layers of nanofibers 4 are formed in the coarse filtration On the surface of layer 3；A diameter of 40 μm of hole in first layers of nanofibers 4 between nanofiber, second Nanowire Tie up the hole in layer 4 between nanofiber a diameter of 15 μm, hole in the third layers of nanofibers 4 between nanofiber it is straight Diameter is 0.55 μm.
It is linked together by way of suture between each layer.The material of the coarse filtration layer 3 is polyvinylidene fluoride Alkene.The inside of the layers of nanofibers 4 is attached with redox graphene.The material of the film supporting layer 1 is polyhydroxybutyrate The mixture of ester and polyacrylonitrile.The shape of the film supporting layer 1 is plate membrane.First layers of nanofibers 4, described second Layers of nanofibers 4 and the third layers of nanofibers 4 intersect arrangement.
Embodiment 5：
Fig. 1 shows the schematic diagram of nanofiber composite filtering film according to an embodiment of the invention.Such as Fig. 1 Shown, the nanofiber composite filtering film, the nanofiber composite filtering film is prepared by electrostatic spinning, is wrapped successively It includes：Film supporting layer 1, nonwoven layer 2, coarse filtration layer 3, layers of nanofibers 4, polyvinylidene fluoride coating 5, between each layer mutually Connection；Wherein, a diameter of 0.65mm of the filter hole of the coarse filtration layer 3；The layers of nanofibers 4 includes first nanometer successively Fibrous layer 4, the second layers of nanofibers 4 and third layers of nanofibers 4, first layers of nanofibers 4 are formed in the coarse filtration On the surface of layer 3；A diameter of 35 μm of hole in first layers of nanofibers 4 between nanofiber, second Nanowire Tie up the hole in layer 4 between nanofiber a diameter of 12 μm, hole in the third layers of nanofibers 4 between nanofiber it is straight Diameter is 0.15 μm.
It is linked together by way of suture between each layer.The material of the coarse filtration layer 3 is polystyrene. The inside of the layers of nanofibers 4 is attached with redox graphene.The material of the film supporting layer 1 is polysulfones and polyacrylonitrile Mixture.The shape of the film supporting layer 1 is plate membrane.First layers of nanofibers 4, second layers of nanofibers 4 It intersects arrangement with the third layers of nanofibers 4.
The nanofiber composite filter material of the present invention has both filtration efficiency and low-drag, and the longevity is used with duration Life is widely used value in field of air filtration, has pole on the products such as air purifier, car filters filter core, mask Big application prospect.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes It is set to and covers other all these variations or modifications.

Claims (8)

1. a kind of nanofiber composite filtering film, which is characterized in that the nanofiber composite filtering film is prepared by electrostatic spinning And obtain, include successively：Film supporting layer, nonwoven layer, coarse filtration layer, layers of nanofibers, polyvinylidene fluoride coating, between each layer It is connected with each other；
Wherein, a diameter of 0.1-1mm of the filter hole of the coarse filtration layer；
The layers of nanofibers is described successively including the first layers of nanofibers, the second layers of nanofibers and third layers of nanofibers First layers of nanofibers is formed on the surface of the coarse filtration layer；
A diameter of 20-50 μm of hole in first layers of nanofibers between nanofiber, in second layers of nanofibers A diameter of 1-20 μm of hole between nanofiber, hole in the third layers of nanofibers between nanofiber it is a diameter of 0.01-1μm。
2. nanofiber composite filtering film according to claim 1, which is characterized in that pass through suture between each layer Mode link together.
3. nanofiber composite filtering film according to claim 1, which is characterized in that be coated with and receive between each layer Rice Zinc oxide particles solution, to be dried later as the binder between each layer in the nano granular of zinc oxide solution.
4. nanofiber composite filtering film according to claim 1, which is characterized in that the material of the coarse filtration layer is poly- Ethylene glycol terephthalate, polyacrylonitrile, polystyrene, polybutylene terephthalate or Kynoar.
5. nanofiber composite filtering film according to claim 1, which is characterized in that the inside of the layers of nanofibers is attached Carbon nanotube or redox graphene.
6. nanofiber composite filtering film according to claim 1, which is characterized in that the material of the film supporting layer is poly- In propylene, polysulfones, Kynoar, polytetrafluoroethylene (PTFE), poly butyric ester, polyacrylonitrile any one or it is two or more mixed Close object.
7. nanofiber composite filtering film according to claim 1, which is characterized in that the shape of the film supporting layer is to receive Rice tunica fibrosa, plate membrane or hollow-fibre membrane.
8. nanofiber composite filtering film according to claim 1, which is characterized in that first layers of nanofibers, institute It states the second layers of nanofibers and the third layers of nanofibers intersects arrangement.
CN201810524102.1A 2018-05-28 2018-05-28 A kind of nanofiber composite filtering film Pending CN108619827A (en)

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Cited By (3)

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CN111841133A (en) * 2019-04-30 2020-10-30 科劲市场管理有限公司 Fluid filter for treating a fluid, container comprising a fluid filter and an air release device
CN113967391A (en) * 2020-07-24 2022-01-25 长丰纺织科技股份有限公司 High-adsorption nano-fiber air filter material and preparation method thereof
WO2024094567A1 (en) 2022-11-01 2024-05-10 Mahle Automotive Technologies (China) Co., Ltd. Filter insert and vehicle air conditioning filter comprising a filter insert of this type

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Application publication date: 20181009