CN105903271A - Regulable mixed nanostructured fiber composite filtering material and preparation method thereof - Google Patents
Regulable mixed nanostructured fiber composite filtering material and preparation method thereof Download PDFInfo
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- CN105903271A CN105903271A CN201610190084.9A CN201610190084A CN105903271A CN 105903271 A CN105903271 A CN 105903271A CN 201610190084 A CN201610190084 A CN 201610190084A CN 105903271 A CN105903271 A CN 105903271A
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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
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
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- 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
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- 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
- B32B5/022—Non-woven fabric
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- 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
- B32B5/08—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 the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- 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
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- 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
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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- 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
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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- 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
- B32B2262/0246—Acrylic resin fibres
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- 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
- B32B2262/0261—Polyamide fibres
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- 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
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- 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
- B32B2262/0292—Polyurethane fibres
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- 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
- B32B2262/04—Cellulosic plastic fibres, e.g. rayon
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- 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
- B32B2262/14—Mixture of at least two fibres made of different materials
Abstract
The invention discloses a regulable mixed nanostructured fiber composite filtering material and a preparation method thereof. The composite filtering material is prepared from porous nanofiber and beaded fiber composite films compounded on line and a non-woven fabric substrate through gluing. The preparation method comprises the following steps: adding a polymer into a mixed solvent system and carrying out stirring at room temperature until a solution is clear and transparent so as to form a spinning solution; carrying out electrostatic spinning via a double-nozzle electrostatic spinning apparatus; and collecting uniformly-mixed special-structure nanofiber films on the non-woven fabric substrate and gluing the films with the non-woven fabric substrate so as to form the sandwich-shaped composite filtering material. The composite filtering material provided by the invention has the characteristics that filtering efficiency is improved and beaded fiber can reduce filtering resistance, so high efficiency and low resistance of the filtering material are realized; moreover, the preparation method has the advantages of simple process, low production cost and easy realization of large-scale production.
Description
Technical field
The invention belongs to nano-functional material technical field, be specifically related to a kind of controllable mixing nanostructured fibers and be combined
Filtering material and preparation method thereof.
Background technology
In recent years due to industrialized high speed development and society's the increasing sharply of car owning amount, under air quality is serious
Fall, human health and normal life are caused serious impact by haze weather.Therefore people are to high efficiency filter material increasingly
Pay attention to.Fiber-like filtering material is because its specific surface area is big, porosity is high and has certain intensity and low price etc. at present
Advantage, occupies an leading position in filtering material, applies the most extensive.Common fiber filter material rely primarily on Blang diffusion,
Retain, the mechanical stop effect such as inertial collision, gravitational settling to the particulate filtering in air, therefore submicron particle is filtered effect
The most undesirable.Although and submicron particle can effectively be filtered by common nano fibrous membrane, but its filtration resistance is big, causes
The cost filtered increases.Therefore developing the nano fibrous membrane that filter efficiency is high and filtration resistance is low is that nano fibrous membrane commercialization is compeled
Be essential a difficult problem to be solved.
The fibre diameter of fiber filter material, fiber surface structure, the pore structure of fiber combination, pore size and
Distribution, porosity etc., be the principal element affecting fiber filter material filtering accuracy and efficiency, and the fiber of small diameter has relatively
High filtering accuracy and filter efficiency, therefore prepare high-efficiency filtration media most straightforward approach and make in filtering material structure exactly
With the fiber of nanoscale.Nano-fiber material has high-specific surface area, high surface and high surface energy, thus has the highest
Filter efficiency, but simultaneously because the compactness extent of nano fibrous membrane is high so that its filtration resistance is bigger than normal, and uses porous fibre
With the tunica fibrosa of the mixing nanostructured of beading fiber can the effectively specific surface area of increased fiber film and fluffy degree, thus not
Only can improve the filter efficiency of Compound filtering material and filtration resistance can be reduced, embody efficient low-resistance characteristic.Simultaneously as
Suspended particulate substance is dragged the power of shooting a retrievable arrow less than thick suspended particulate is dragged the power of shooting a retrievable arrow by nanofiber, the therefore self-cleaning property of nanofiber
Can be excellent, can be removed by back draught or machinery concussion easily.Domestic about electrostatic spinning nano fiber use
Patent in filtering material is appeared in the newspapers.
Patent CN 104689724 A discloses the preparation method of a kind of organic and inorganic composite nanofiber membrane filtration material,
It is the nano fibrous membrane prepared to be dissolved in ethanol with inorganic microparticle preparation mix suspension, then suspension is uniformly coated with
It is overlying on nonwoven substrates surface and can obtain organic and inorganic composite nanofiber membrane filtration material after drying.Patent CN 103706182
A discloses the preparation method of a kind of ball line combined composite fibre air filting material, is that silicon dioxide microsphere is added polysulfones
In spinning solution, can be with the combined nano fibrous membrane of ball line through electrostatic spinning.But both approaches fiber and the content of microballoon
Ratio is wayward, is unfavorable for producing process control during multiple filtering requirement product.
Summary of the invention
The invention aims to overcome above deficiency, it is provided that a kind of controllable with the strongest adaptation of product is mixed
Close nanostructured fibers composite filter material and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions: a kind of controllable mixing nanostructured fibers combined filtration
Material, including non-woven base fabric layer and mixing nanostructured fibers layer, described non-woven base fabric layer and mixing nanostructured fibers
Layer gluing combines, and described mixing nanostructured fibers layer is porous nano-fibre layer or beading layers of nanofibers, described porous
Layers of nanofibers or beading layers of nanofibers are made up of polymer and mixed solvent system；Further improvement of the present invention exists
In: described non-woven base fabric layer is spun lacing layer of cloth, acupuncture layer of cloth or spunbond terylene non-weaving cloth layer.
Further improvement of the present invention is: described polymer is polyacrylonitrile, cellulose acetate, poly terephthalic acid second
Diester, nylon 6, polymethyl methacrylate, polyurethane or Kynoar.
Further improvement of the present invention is: described mixed solvent system is acetone, N,N-dimethylformamide, N, N-bis-
The solvent of the two or more mixed solvent composition in methylacetamide, dichloromethane, chloroform, ethanol, ether and pentane
System；
The preparation method of a kind of controllable mixing nanostructured fibers composite filter material, comprises the following steps: by described polymerization
Thing is separately added in different dicyandiamide solutions, is stirred at room temperature to solution clear, produces spinning solution；By double shower nozzle Static Spinnings
Silk device carries out electrostatic spinning, and obtains mixing of different proportion by regulation spinneret orifice liquid outlet quantity at nonwoven fabric surface
Foreign structure nano fibrous membrane, it may be assumed that porous nanofiber membrane or beading nano fibrous membrane, and through follow-up aerosol bonding carry out
Compound.
Further improvement of the present invention is: described dicyandiamide solution is acetone, N,N-dimethylformamide, N, N-dimethyl
In acetamide, dichloromethane, chloroform, ether and pentane, two kinds or three carry out the mixed solvent system of compounding formation,
Compounding volume ratio is 9:1 ~ 1:9.
Further improvement of the present invention is: the parameter of described electrostatic spinning is: spinning distance 10 ~ 20 cm, spinning voltage
12 ~ 30 kV, spinning flow 0.1 ~ 2 mL/h.
Further improvement of the present invention is: described concentration of dope is 3 ~ 20%.
The controllable of the present invention includes three aspects: changed the structure of fiber by the concentration changing spinning solution；Pass through
Change dicyandiamide solution and solvent complex ratio than the pattern changing fiber；Topmost can be by changes going out of spinning nozzle
Liquid measure changes the content ratio of porous fibre and beading fiber；Thus reach to prepare the mesh of multiple mixed structure nano fibrous membrane
's.
The present invention compared with prior art has the advantage that
1, achieve and in base fabric, once spin the nanofiber of two kinds of different shapes simultaneously and be evenly distributed；
2, can adapt to, in the production of high-precision filtering material, also adapt in low-resistance less demanding to filtering accuracy simultaneously
The production of power filtering material, can realize the production of efficient low-resistance filtering material by regulation technique；
3, expand its range of application, simplify the production method of traditional multiple fibre morphology nano fibrous membrane, beneficially nanometer
The marketization of Fibrous membrane filtration material.
Detailed description of the invention:
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment is only used
In explaining the present invention, it is not intended that limiting the scope of the present invention.
Embodiment 1
Weigh 1.2,2.2 g secondary cellulose acetate sheets, be dissolved in dichloromethane/ethanol, 30 mL volume ratios that 20 mL volume ratios are 7/3 respectively
Be 3/2 acetone/DMA mixed solution in and stir, until solution clear, by double sprays
Head electrostatic spinning apparatus carries out electrostatic spinning, and spinning voltage is 22 kV, and spinning distance is 16 cm, and fltting speed is respectively 0.5
ML and 1 mL, receiving device is a winding/unwinding device, and surface covers PET non-woven base fabric, the mixed structure nanofiber obtained
Film covers one layer of PET non-weaving cloth by gluing method again.
Embodiment 2
Weigh 1.2,2.2 g secondary cellulose acetate sheets respectively, be dissolved in dichloromethane/ethanol, 30 mL bodies that 20 mL volume ratios are 7/3 respectively
Long-pending than be 3/2 acetone/DMA mixed solution in and stir, until solution clear；Pass through
Double nozzle electrospinning devices carry out electrostatic spinning, and spinning voltage is 22 kV, and spinning distance is 16 cm, and fltting speed is respectively
0.7 mL and 1 mL, receiving device is a winding/unwinding device, and surface covers PET non-woven base fabric, the mixed structure nanometer obtained
Tunica fibrosa covers one layer of PET non-weaving cloth by gluing method again.
Embodiment 3
Weigh 1.5,2.2 g secondary cellulose acetate sheets respectively, be dissolved in dichloromethane/ethanol, 30 mL bodies that 20 mL volume ratios are 8/2 respectively
Long-pending than be 3/2 acetone/DMA mixed solution in and stir, until solution clear；Pass through
Double nozzle electrospinning devices carry out electrostatic spinning, and spinning voltage is 22 kV, and spinning distance is 16 cm, and fltting speed is respectively
0.5 mL and 1 mL, receiving device is a winding/unwinding device, and surface covers PET non-woven base fabric, the mixed structure nanometer obtained
Tunica fibrosa covers one layer of PET non-weaving cloth by gluing method again.
Embodiment 4
Weigh 1.9g secondary cellulose acetate sheets, be dissolved in the mixed of acetone/DMA that 30 mL volume ratios are 3/2 and 1/4 respectively
Close in solution and stir, until solution clear；Electrostatic spinning, spinning electricity is carried out by double nozzle electrospinning devices
Pressure is 22 kV, and spinning distance is 16 cm, and fltting speed is respectively 0.5 mL and 1 mL, and receiving device is a winding/unwinding device,
Surface covers PET non-woven base fabric, and the mixed structure nano fibrous membrane obtained is knitted by gluing method one layer of PET of covering is non-again
Make cloth.
Composite filtering film embodiment 1-4 prepared carries out performance test, uses Lzc mono-H type filtrate all-round property testing
Platform (Suzhou Hua Yi instrument and equipment Co., Ltd) and the filtration effect of BCJ a series of laser dust particle counter test each sample
Rate, test gas flow is 60 L/min, the results are shown in Table 1.
The performance test results of composite filtering film prepared by table 1 embodiment 1-4:
The preparation method of controllable disclosed by the invention mixing nanofiber composite filter material achieves once same in base fabric
Time the spinning nanofiber of two kinds of different shapes and being evenly distributed；Compound filtering material preparation method of the present invention can adapt in high accuracy
The production of filtering material, also adapt to, in the production of lower resistance filtering material less demanding to filtering accuracy, pass through simultaneously
Regulation technique can realize the production of efficient low-resistance filtering material.The present invention is on the basis of conventional nanofibers film composite filtering material
Propose further innovation, expand its range of application, simplify the producer of traditional multiple fibre morphology nano fibrous membrane
Method, the beneficially marketization of nano fibrous membrane filtering material.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (8)
1. a controllable mixing nanostructured fibers composite filter material, it is characterised in that include non-woven base fabric layer and mix
Close nanostructured fibers layer, described non-woven base fabric layer and mixing nanostructured fibers layer gluing to combine, described mixing nano junction
Structure fibrage is porous nano-fibre layer or beading layers of nanofibers, described porous nano-fibre layer or beading nanofiber
Layer is made up of polymer and mixed solvent system.
Controllable the most according to claim 1 mixing nanostructured fibers composite filter material, it is characterised in that: described non-
Woven base fabric layer is spun lacing layer of cloth, acupuncture layer of cloth or spunbond terylene non-weaving cloth layer.
Controllable the most according to claim 1 mixing nanostructured fibers composite filter material, it is characterised in that: described poly-
Compound be polyacrylonitrile, cellulose acetate, PET, nylon 6, polymethyl methacrylate, polyurethane or
Kynoar.
Controllable the most according to claim 1 mixing nanostructured fibers composite filter material, it is characterised in that: described mixed
Bonding solvent system is acetone, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, dichloromethane, chloroform, ethanol, second
The dicyandiamide solution of the two or more mixed solvent composition in ether and pentane.
The preparation method of a kind of controllable the most according to claim 1 mixing nanostructured fibers composite filter material, its
It is characterised by: comprise the following steps: described polymer is separately added in dicyandiamide solution, is stirred at room temperature to solution clear,
Produce spinning solution；Electrostatic spinning is carried out by double nozzle electrospinning devices, and by regulation spinneret orifice liquid outlet quantity non-woven
The foreign structure nano fibrous membrane that cloth surface is uniformly mixed, it may be assumed that porous nanofiber membrane or beading nano fibrous membrane, and warp
The bonding of follow-up aerosol is combined.
The preparation method of a kind of controllable the most according to claim 5 mixing nanostructured fibers composite filter material, its
It is characterised by: described dicyandiamide solution is acetone, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, dichloromethane, three chloromethanes
In alkane, ether and pentane, two kinds or three carry out the mixed solvent system of compounding formation, and compounding volume ratio is 9:1 ~ 1:9.
The preparation method of a kind of controllable the most according to claim 5 mixing nanostructured fibers composite filter material, its
It is characterised by: the parameter of described electrostatic spinning is: spinning distance 10 ~ 20 cm, spinning voltage 12 ~ 30 kV, spinning flow 0.1 ~ 2
mL/h。
The preparation method of a kind of controllable the most according to claim 5 mixing nanostructured fibers composite filter material, its
It is characterised by: described concentration of dope is 3 ~ 20%.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097066A (en) * | 2017-09-21 | 2018-06-01 | 惠州德赛信息科技有限公司 | A kind of efficient low-resistance antibacterial of sandwich style removes the preparation method of formaldehyde composite Nano filtering material |
| CN108589050A (en) * | 2018-05-15 | 2018-09-28 | 南通大学 | A kind of preparation method of thermoplastic polyurethane nano-fiber film |
| CN109012218A (en) * | 2018-08-27 | 2018-12-18 | 中国科学院城市环境研究所 | Four layers of composite micro-nano rice fiber air filter membrane of one kind and its application |
| CN109157868A (en) * | 2018-10-16 | 2019-01-08 | 西北师范大学 | Method using discarded cigaratte filter preparation water-oil separationg film and the application in water-oil separating |
| CN109289540A (en) * | 2018-09-21 | 2019-02-01 | 武汉纺织大学 | Has micropore-nano pore structure nanofiber porous membrane and preparation method thereof |
| CN111389098A (en) * | 2020-04-27 | 2020-07-10 | 蚌埠泰鑫材料技术有限公司 | Electrostatic spinning composite fiber material capable of effectively loading copper ions |
| WO2021082090A1 (en) * | 2019-10-30 | 2021-05-06 | 博裕纤维科技（苏州）有限公司 | Anti-backflushing nanofiber composite filter material having anchor points |
| CN113171654A (en) * | 2021-04-28 | 2021-07-27 | 广东溢达纺织有限公司 | Filter fiber layer, preparation method thereof and mask |
| CN114703559A (en) * | 2022-04-22 | 2022-07-05 | 上海水星家用纺织品股份有限公司 | Preparation method and application of nanofiber spinning solution |
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