CN105903271B - Controllable mixing nanostructured fibers composite filter material and preparation method thereof - Google Patents

Controllable mixing nanostructured fibers composite filter material and preparation method thereof Download PDF

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CN105903271B
CN105903271B CN201610190084.9A CN201610190084A CN105903271B CN 105903271 B CN105903271 B CN 105903271B CN 201610190084 A CN201610190084 A CN 201610190084A CN 105903271 B CN105903271 B CN 105903271B
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layer
spinning
preparation
nanostructured fibers
filter material
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CN105903271A (en
Inventor
陈昀
曹智祥
曹建华
魏取福
黄锋林
徐阳
王清清
陈程
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Nantong Cellulose Fibers Co Ltd
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Nantong Cellulose Fibers Co Ltd
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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
    • 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
    • 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
    • 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
    • B32B5/022—Non-woven fabric
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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]
    • 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
    • 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
    • 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 kind of controllable mixing nanostructured fibers film composite filtering materials and preparation method thereof, which is made up of the porous nano-fibre, beading composite fiber membrane and non-woven fabrics base material being combined online of gluing.The preparation process of Compound filtering material is：It adds a polymer in mixed solvent system, it is stirred at room temperature to solution clear, form spinning solution, electrostatic spinning is carried out by double nozzle electrospinning devices, it is collected simultaneously uniformly mixed foreign structure nano fibrous membrane on non-woven fabrics base material, and is combined to form the Compound filtering material of sandwich formats with non-woven fabrics base material by the mode of gluing.The present invention has the characteristics that filtration resistance can be reduced by improving filter efficiency and beading fiber, realize the efficient low-resistance and simple production process of filtering material, production cost is low, it is easy to accomplish the advantages of large-scale production.

Description

Controllable mixing nanostructured fibers composite filter material and preparation method thereof
Technical field
The invention belongs to nano-functional material technical fields, and in particular to a kind of controllable mixing nanostructured fibers are compound Filtering material and preparation method thereof.
Background technology
Increasing sharply due to industrialized high speed development and social car owning amount in recent years, under air quality is serious Drop, haze weather cause serious influence to human health and normal life.Therefore people to high efficiency filter material increasingly Pay attention to.Fiber-like filtering material is because its large specific surface area, porosity are high and with certain intensity and cheap etc. at present Advantage is occupied an leading position in filtering material, and application is extremely extensive.Common fiber filter material rely primarily on Blang diffusion, The effect of the mechanical stops such as retention, inertial collision, gravitational settling filters effect to filter the particle in air to submicron particle Fruit is undesirable.And although common nano fibrous membrane can effectively filter submicron particle, its filtration resistance is big, causes The cost of filtering increases.Therefore it is that nano fibrous membrane commercialization is compeled to develop the nano fibrous membrane that filter efficiency is high and filtration resistance is low Be essential the problem to be solved.
The fibre diameter of fiber filter material, the pore structure of fiber surface structure, fiber combination, pore size and its Distribution, porosity etc., are the principal elements for influencing fiber filter material filtering accuracy and efficiency, the fiber of small diameter have compared with High filtering accuracy and filter efficiency, therefore it is exactly to make in filtering material structure to prepare high-efficiency filtration media most straightforward approach With the fiber of nanoscale.Nano-fiber material has high-specific surface area, high surface and high surface energy, thus with very high 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 nanostructure of beading fiber can effective increased fiber film specific surface area and fluffy degree, to not The filter efficiency of Compound filtering material can only be improved and filtration resistance can be reduced, embody efficient low-resistance characteristic.Simultaneously as Nanofiber shoots a retrievable arrow power less than shooting a retrievable arrow power to dragging for coarse suspended particulate to dragging for suspended particulate substance, therefore the self-cleaning property of nanofiber Can be excellent, it can easily be removed by back draught or machinery concussion.It is used about electrostatic spinning nano fiber the country It has appeared in the newspapers in the patent of filtering material.
104689724 A of patent CN disclose a kind of preparation method of organic and inorganic composite nanofiber membrane filtration material, It is that the nano fibrous membrane that will be prepared and inorganic microparticle are dissolved in ethyl alcohol and prepare mixing suspension, then suspension is uniformly applied Organic and inorganic composite nanofiber membrane filtration material can be obtained by being overlying on nonwoven substrates surface after drying.Patent CN 103706182 A discloses the preparation method of the combined composite fibre air filting material of a bulb line, is that polysulfones is added in silicon dioxide microsphere It, can be with the combined nano fibrous membrane of ball line by electrostatic spinning in spinning solution.But the content of both methods fiber and microballoon Than being difficult to control, it is unfavorable for producing process control when a variety of filtering requirement products.
Invention content
It is above the purpose of the invention is to overcome the shortcomings of, it provides a kind of controllable mixed with the very strong adaptation of product 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, the non-woven base fabric layer and mixing nanostructured fibers Layer gluing combines, and the mixing nanostructured fibers layer is porous nano-fibre layer and beading layers of nanofibers, described porous to receive Rice fibrous layer or beading layers of nanofibers are made of polymer and mixed solvent system；Further improvement of the present invention is： The non-woven base fabric layer is spun lacing layer of cloth, eedle-punched non-wovens layer or spunbond terylene non-weaving cloth layer.
Further improvement of the present invention is：The polymer is polyacrylonitrile, cellulose acetate, poly terephthalic acid second Diester, nylon 6, polymethyl methacrylate, polyurethane or Kynoar.
Further improvement of the present invention is：The mixed solvent system is acetone, N,N-dimethylformamide, N, N- bis- The solvent body of two or more mixed solvents composition in methylacetamide, dichloromethane, chloroform, ethyl alcohol, ether and pentane System；
A kind of preparation method of controllable mixing nanostructured fibers composite filter material, includes the following steps：It will be described Polymer is separately added into different dicyandiamide solutions, is stirred at room temperature to solution clear, is generated spinning solution；It is quiet by double nozzles Electric spinning device carries out electrostatic spinning, and obtains the mixing of different proportion in nonwoven fabric surface by adjusting spinneret orifice liquid outlet quantity Uniform foreign structure nano fibrous membrane, i.e.,：Porous nanofiber membrane or beading nano fibrous membrane, and bonded through follow-up aerosol It carries out compound.
Further improvement of the present invention is：The dicyandiamide solution is acetone, N,N-dimethylformamide, N, N- dimethyl Two kinds or three carry out the mixed solvent system of compounding formation in acetamide, dichloromethane, chloroform, ether and pentane, It is 9 to compound volume ratio:1~1:9.
Further improvement of the present invention is：The parameter of the electrostatic spinning is：Spinning 10~20cm of distance, spinning voltage 12~30kV, 0.1~2mL/h of spinning flow.
Further improvement of the present invention is：The concentration of dope is 3~20%.
The controllable of the present invention includes three aspects：Change the structure of fiber by changing the concentration of spinning solution；Pass through Change dicyandiamide solution and solvent complex ratio than changing the pattern of fiber；It most importantly can be by changing going out for spinning nozzle Liquid measure changes the content ratio of porous fibre and beading fiber；To reach the mesh for preparing a variety of mixed structure nano fibrous membranes 's.
Compared with the prior art, the present invention has the following advantages：
1, realize once in base fabric and meanwhile spin two kinds of different shapes nanofiber and be evenly distributed；
2, it can adapt in the production of high-precision filtering material, while also adapting in of less demanding to filtering accuracy The production of efficient low-resistance filtering material may be implemented by adjusting technique for the production of lower resistance filtering material；
3, its application range is expanded, the production method of traditional multiple fiber form nano fibrous membrane is simplified, is conducive to The marketization of nano fibrous membrane filtering material.
Specific implementation mode：
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, the embodiment It is only used for explaining the present invention, be not intended to limit the scope of the present invention..
Embodiment 1
1.2,2.2g secondary cellulose acetate sheets are weighed, are dissolved in dichloromethane/ethyl alcohol, 30mL volume ratios that 20mL volume ratios are 7/3 respectively In the mixed solution of 3/2 acetone/n,N-dimethylacetamide and to stir evenly, until solution clear, passes through double sprays Head electrostatic spinning apparatus carries out electrostatic spinning, and spinning voltage 22kV, spinning distance is 16cm, and fltting speed is respectively 0.5mL And 1mL, reception device are a winding/unwinding device, surface covers PET non-woven base fabrics, and obtained mixed structure nano fibrous membrane is again One layer of PET non-woven cloth is covered by the method for gluing.
Embodiment 2
1.2,2.2g secondary cellulose acetate sheets are weighed respectively, are dissolved in dichloromethane/ethyl alcohol, 30mL bodies that 20mL volume ratios are 7/3 respectively It in the mixed solution for acetone/n,N-dimethylacetamide that product ratio is 3/2 and stirs evenly, until solution clear；Pass through Double nozzle electrospinning devices carry out electrostatic spinning, and spinning voltage 22kV, spinning distance is 16cm, and fltting speed is respectively 0.7mL and 1mL, reception device are a winding/unwinding device, and surface covers PET non-woven base fabrics, obtained mixed structure Nanowire It ties up film and one layer of PET non-woven cloth is covered by the method for gluing again.
Embodiment 3
1.5,2.2g secondary cellulose acetate sheets are weighed respectively, are dissolved in dichloromethane/ethyl alcohol, 30mL bodies that 20mL volume ratios are 8/2 respectively It in the mixed solution for acetone/n,N-dimethylacetamide that product ratio is 3/2 and stirs evenly, until solution clear；Pass through Double nozzle electrospinning devices carry out electrostatic spinning, and spinning voltage 22kV, spinning distance is 16cm, and fltting speed is respectively 0.5mL and 1mL, reception device are a winding/unwinding device, and surface covers PET non-woven base fabrics, obtained mixed structure Nanowire It ties up film and one layer of PET non-woven cloth is covered by the method for gluing again.
Embodiment 4
1.9g secondary cellulose acetate sheets are weighed, are dissolved in acetone/n,N-dimethylacetamide that 30mL volume ratios are 3/2 and 1/4 respectively It in mixed solution and stirs evenly, until solution clear；Electrostatic spinning, spinning are carried out by double nozzle electrospinning devices Voltage is 22kV, and spinning distance is 16cm, and fltting speed is respectively 0.5mL and 1mL, and reception device is a winding/unwinding device, table Face covers PET non-woven base fabrics, and it is non-woven that obtained mixed structure nano fibrous membrane covers one layer of PET by the method for gluing again Cloth.
The embodiment 1-4 composite filtering films prepared are tested for the property, using mono- H-type filtrate all-round property testings of Lzc The filtering effect of platform (Suzhou China instrument experimental instruments and equipment limited) and a series of laser dust particle counter test each sample of BCJ Rate, test gas flow are 60L/min, the results are shown in Table 1.
The performance test results of composite filtering film prepared by 1 embodiment 1-4 of table
The preparation method of controllable mixing nanofiber composite filter material disclosed by the invention realizes once in base fabric Above while spinning the nanofiber of two kinds of different shapes and being evenly distributed；Compound filtering material preparation method of the present invention can adapt in height The production of the filtering material of precision, while also adapting in the production to filtering accuracy lower resistance filtering material of less demanding, The production of efficient low-resistance filtering material may be implemented by adjusting technique.Base of the present invention in conventional nanofibers film composite filtering material Further innovation is proposed on plinth, expands its application range, simplifies the life of traditional multiple fiber form nano fibrous membrane Production method is conducive to the marketization of nano fibrous membrane filtering material.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest range caused.

Claims (5)

1. a kind of controllable mixing nanostructured fibers composite filter material, which is characterized in that including non-woven base fabric layer and mix Nanostructured fibers layer is closed, the non-woven base fabric layer and mixing nanostructured fibers layer gluing combine, the mixing nano junction Structure fibrous layer is porous nano-fibre layer and beading layers of nanofibers, the porous nano-fibre layer or beading layers of nanofibers It is made of polymer and mixed solvent system；The non-woven base fabric layer is spun lacing layer of cloth, eedle-punched non-wovens layer or spunbond terylene is non-knits Make layer of cloth；The polymer is polyacrylonitrile, cellulose acetate, polyethylene terephthalate, nylon 6, polymethylacrylic acid Methyl esters, polyurethane or Kynoar；The mixed solvent system is acetone, N,N-dimethylformamide, N, N- dimethyl second The dicyandiamide solution of two or more mixed solvents composition in amide, dichloromethane, chloroform, ethyl alcohol, ether and pentane.
2. a kind of preparation method of controllable mixing nanostructured fibers composite filter material according to claim 1, It is characterized in that：Include the following steps：The polymer is separately added into dicyandiamide solution, is stirred at room temperature to solution clear, Generate spinning solution；Electrostatic spinning is carried out by double nozzle electrospinning devices, and by adjusting spinneret orifice liquid outlet quantity non-woven Cloth surface obtains uniformly mixed foreign structure nano fibrous membrane, i.e.,：Porous nanofiber membrane or beading nano fibrous membrane, and pass through Follow-up aerosol bonding carries out compound.
3. a kind of preparation method of controllable mixing nanostructured fibers composite filter material according to claim 2, It is characterized in that：The dicyandiamide solution is acetone, N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, dichloromethane, three chloromethanes Two kinds or three carry out the mixed solvent system of compounding formation in alkane, ether and pentane, and compounding volume ratio is 9:1~1:9.
4. a kind of preparation method of controllable mixing nanostructured fibers composite filter material according to claim 2, It is characterized in that：The parameter of the electrostatic spinning is：10 ~ 20 cm of spinning distance, 12 ~ 30 kV of spinning voltage, spinning flow 0.1 ~ 2 mL/h。
5. a kind of preparation method of controllable mixing nanostructured fibers composite filter material according to claim 2, It is characterized in that：The concentration of dope is 3 ~ 20%.
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CN110743249B (en) * 2019-10-30 2021-03-12 博裕纤维科技（苏州）有限公司 Back-blowing resistant nanofiber composite filter material with anchor points
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
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