CN104711771A - Method for preparing nanofiber membrane through electrostatic spinning - Google Patents
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- CN104711771A CN104711771A CN201510141291.0A CN201510141291A CN104711771A CN 104711771 A CN104711771 A CN 104711771A CN 201510141291 A CN201510141291 A CN 201510141291A CN 104711771 A CN104711771 A CN 104711771A
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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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/26—Polyalkenes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/28—Polymers of vinyl aromatic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
- B01D71/42—Polymers of nitriles, e.g. polyacrylonitrile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/74—Natural macromolecular material or derivatives thereof
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a method for preparing a nanofiber membrane through electrostatic spinning. High-molecular polymer is dissolved in solvent to be stirred till an even solution is obtained; the spinning solution is used for electrostatic spinning, and the nanofiber membrane of a sparse structure can be obtained. The preparing method is convenient and fast to conduct, due to the fact that the obtained nanofiber membrane is of the unique sparse structure, the filtering resistance of the nanofiber membrane is lowered greatly, the influence on the filtering efficiency of the nanofiber membrane is very low and the method has very good application prospects in the filtering field, especially in the air filtering field.
Description
Technical field
The invention belongs to the preparation field of filter membrane material, particularly a kind of method of electrospun nanofibers film.
Background technology
In recent years, air pollution problems inherent is serious, spreads each big city of China, as PM2.5, is commonly called as " haze ".PM2.5 particle diameter is little, is rich in a large amount of poisonous and harmful substances, affects large on health and environmental quality.For making environment reach high-cleanness, high, most effective method filters.Electrostatic spinning nano fiber diameter is between sub-micron and nanometer, there is the advantages such as specific area is large, porosity is high, preparation process is simple, spin certain thickness even film and cause rapidly the concern of people because having high feature of filtering effect and be applied to filtration aspect very soon.But so far, the technique of nanometer film is uncertain large and filtration resistance is large, significantly limit its application in filtration.Utilize insulation receive the standby patterning of template electrostatic spinning nano fibrous membrane [man of virtue and ability is medium. utilize insulation to receive the method [P] of the standby patterned nano-fiber film of template electrostatic spinning. Chinese patent: ZL201210197217.7,2012-09-26], because of can simulate ad hoc structure, and then promote the regeneration of the adhesion of cell, migration, propagation, differentiation and tissue, be applied in organizational project, for tissue [Dvir such as picture muscle, nerve, blood vessel, bones, T., et al.NatureNanotechnology, 2011.6 (1): p.13-22].But its application in gas filtration rarely has bibliographical information.
Various method is used to research and develop the low filtration resistance nano fibrous membrane of high filter effect in recent years.These methods mainly add titanium dioxide or adopt the mode of multi-layer thin nanometer film compound.Method 1, titanium dioxide is added polysulfone polymer solution and carry out electrostatic spinning, layering appears in polysulfone fibre film, fiber surface there will be porous phenomenon, for 300 ~ 500nmNacl aerosol, the optimum filtration efficiency of film can reach 99.989%, filtration resistance is about 117Pa [Wang, N., Si, Y., Wang, N., et al.Separation andPurification Technology126:44-51.].Multilayer slim polyacrylonitrile/titania fiber composite membrane, for 300 ~ 500nmNacl aerosol, the optimum filtration efficiency of film can reach 99.99%, filtration resistance is about 50Pa [Wan, HG., Wang, N., Yang JM., et al.Journal of Colloid and Interface Science417:18-26.].[Li J., the Gao F such as method 2, Li, Liu L Q, et al.Express Polymer Letters, 2013,7 (8) .] have studied the filtering material adopting the arrangement of needleless spinning process spinning multilayer, its filter effect can reach 99.95%, and quality is little, quality factor are high.[the Leung W W F such as Leung W W F, HungC H.Separation and Purification Technology, 2012,92:174-180.] have studied the impact that nano fibrous membrane and micron order tunica fibrosa stack time ordered pair composite fabric filtration resistance, result shows that, when micron order nanometer film is placed on upper strata, the filtration resistance of composite fabric is lower.
But, adopt the method adding titanium dioxide method and prepare the low nanometer film of the filter high filtration resistance of effect, cost can be made to increase on the one hand; Titanium dioxide can not be dissolved in polymer solution on the other hand, along with the prolongation of spinning time, titanium dioxide precipitation phenomenon can be there is in solution, thus affect titanium dioxide distributing homogeneity, and then affect nanometer film porous nickel, for obtaining the quality controllable low filtration resistance nanometer film of height filter effect, at least need to carry out ultrasonic wave process every half an hour to solution, therefore nanometer film preparation process is comparatively loaded down with trivial details.Adopt the thinner nanometer film of multilayer to be compounded to form the method for the low filtration resistance of high filter effect, the first, need repeatedly to make individual layer nanometer film, operation is loaded down with trivial details; The second, due in nanofiber spinning process, the every position of root fiber on dash receiver is uncontrollable, thin nanometer film, and its uniformity is more wayward, and therefore the production efficiency of multi-layer nano-film is not high; 3rd, because adhesion is between layers smaller, use procedure is limited.
But, then rarely have report about the method by structure regulating nanofiber membrane filtration effect filtration resistance.Li, P. etc. [Li, P., Wang, C.Y., Li, Z., et al.Rsc Advances, 2014,4 (96): 54115-54121.] research shows that hierarchy carbon nano-tube fibre composite membrane can change its particle and catch performance.But its Pressure Drop reaches about 450Pa, and the method accurately cannot control the multilevel hierarchy of nanometer film, therefore cannot ensure to prepare high-efficiency low-resistance nano tunica fibrosa.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of electrospun nanofibers film, preparation method of the present invention is convenient, fast, the nano fibrous membrane obtained is owing to having unique sparsity structure, thus greatly reduce the filtration resistance of nano fibrous membrane, and it is very little on the impact of its filter efficiency, in filtration art, especially field of air filtration, has extraordinary application prospect.
The method of a kind of electrospun nanofibers film of the present invention, comprising:
(1) high molecular polymer is dissolved in solvent, stirs, obtain spinning solution;
(2) above-mentioned spinning solution is carried out electrostatic spinning, obtain the nano fibrous membrane with sparsity structure; Wherein the receiving system of electrostatic spinning is: insulation board or foam.
In described step (1), high molecular polymer is one or more in polyacrylonitrile, poly-aspartate, polystyrene, Kynoar, shitosan, nylon 6.
In described step (1), solvent is N, one or more in dinethylformamide, DMA, formic acid, ethanol, methyl alcohol, acetic acid, trifluoroacetic acid, oxolane, acetone, carrene, chloroform, hexafluoroisopropanol.
In described step (1), the mass percentage concentration of spinning solution is 8%-25%.
In described step (2), electrostatic spinning process parameter is: voltage is 1 ~ 50KV, syringe needle is 0.1 ~ 2m to reception template distance, spinnerette diameters is 1 μm ~ 2mm, spinning speed is 0.1 ~ 20mL/h, the spinning time is 8 ~ 10h, environment temperature is 20 ~ 60 DEG C, and envionmental humidity is 20 ~ 80%.
In described step (2), insulation board is the insulation board (insulation board with regular texture of cutting) with bulge-structure; Foam is bulge-structure foamed material.
Described insulation board is poly (methyl methacrylate) plate, and the structure interval of insulation board adds iron wire; Yarn is added in foamed material.
Protruding length × wide × the height of described insulation board is 5-10mm × 5-10mm × 5-10mm, and protruding fore-and-aft clearance is 2-5mm × 2-5mm; The diameter of foam projection be highly 1-10mm × 1-10mm, protruding fore-and-aft clearance is 0.8-3mm × 0.8-3mm.
Described nano fibrous membrane is air-filtering membrane.
The present invention, by having the receiving system of a fixed structure, prepares the low filtration resistance nano fibrous membrane of high filter effect,
By the cutting poly (methyl methacrylate) plate to have regular texture, and between structure, add iron wire, bubble wrap material adds common yarn, as receiving system, high molecular polymer is dissolved and obtains spinning solution in a solvent, obtained the nanometer film with sparsity structure by electrostatic spinning, obtain the nano fibrous membrane of efficient low-resistance due to the change of pore-size distribution.
It is non-conductive material that bubble wrap material used in the present invention adds common yarn receiving system, and surface has rough structure, and the pattern on surface controls the deposition of nanofiber, and a nanometer film is formed the nano fibrous membrane with difference pore-size distribution.
Cutting poly (methyl methacrylate) plate used in the present invention, and to add iron wire receiving system between structure be non-conductive material and conductive materials assembled material, surface has rough structure, the pattern on surface controls the deposition of nanofiber, and a nanometer film is formed the nano fibrous membrane with difference pore-size distribution.
The present invention is the deposition by utilizing the sparsity structure on receiving system surface to control nanofiber, obtains the nanometer film of pore-size distribution uniqueness, and then prepares the low filtration resistance nanometer film manufacturing technique method of high filter effect.Therefore, the present invention greatly can promote the development and application of electrostatic spinning nano fiber film in filtration.
beneficial effect
(1) the figuratum template of tool that the present invention is used is dirt cheap, is easy to get, and without the need to complicated processing, thus by the receiving system of various structure, can prepare the low filtration resistance nano fibrous membrane of high filter effect easily and fast, at an easy rate; Such as: bubble wrap material can be adopted to add common yarn as receiving system;
(2) the present invention can prepare the uniform high-efficiency low-resistance nano tunica fibrosa (30cm × 30cm) of larger area;
(3) template prepared of the present invention is by controlling protruding height and size, the filter effect of regulation and control nanometer film and filtration resistance, in filtration industry, especially there is extraordinary application prospect to the exploitation (as: protective clothing, efficient mouth mask) of functional filtering product;
(4) the high-efficiency low-resistance nano film that prepared by the present invention adopts the test of TSI8130 tester, and the Nacl aerosol of employing about 75nm, flow velocity are 85L/Min is experiment condition, and the filter effect of nanometer film can reach more than 95%, and filtration resistance is lower than 30mmH simultaneously
2o, reaches China GB GB2626-2006 and U.S. NOISH standard pin is imitated filtration filter and the requirement of filtration resistance;
(5) the high-efficiency low-resistance nano film that prepared by the present invention adopts the gas permeability of YG461E fabric air-permeability amount instrument test high-efficiency low-resistance nano film to reach 187.96Lm
-2s
-1, good air permeability.
Accompanying drawing explanation
Fig. 1 is that the present invention prepares patterned fibrous device used;
Fig. 2 is cutting poly (methyl methacrylate) plate (a) and obtained sparsity structure nanometer film (b);
Fig. 3 is the SEM figure of sparsity structure nanometer film prepared by cutting poly (methyl methacrylate) plate;
Fig. 4 is the diameter distribution profile of sparsity structure nanometer film prepared by cutting poly (methyl methacrylate) plate;
Fig. 5 is the graph of pore diameter distribution of sparsity structure nanometer film prepared by cutting poly (methyl methacrylate) plate;
Fig. 6 be bubble wrap material (a) and by bubble wrap material add thick line obtained there is sparsity structure nanometer film (b);
Fig. 7 is the SEM figure that bubble wrap material adds sparsity structure nanometer film prepared by thick line;
Fig. 8 is the diameter distribution profile that bubble wrap material adds sparsity structure nanometer film prepared by thick line;
Fig. 9 is the graph of pore diameter distribution that bubble wrap material adds sparsity structure nanometer film prepared by thick line;
Figure 10 be bubble wrap material (a) and by bubble wrap material add fine rule obtained there is sparsity structure nanometer film (b);
Figure 11 is the SEM figure that bubble wrap material adds sparsity structure nanometer film prepared by thick line;
Figure 12 is the fiber diameter distribution profile that bubble wrap material adds sparsity structure nanometer film prepared by fine rule;
Figure 13 is the graph of pore diameter distribution that bubble wrap material adds sparsity structure nanometer film prepared by fine rule.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
1.4g polyacrylonitrile is dissolved in the DMF of 8.6g, stirs 8h to dissolving completely, obtaining polyacrylonitrile/DMF spinning solution that concentration is 14% (gram/gram).Select the syringe of 10ml, the syringe needle of 0.5mm internal diameter, extract polyacrylonitrile/DMF spinning solution, be fixed on micro-injection pump.Carry out electrospinning by electrostatic spinning apparatus as shown in Figure 1, parameter is: voltage 12KV, receiving range 20cm, and injection rate is 0.6ml/h, and environment temperature is 25 DEG C, and envionmental humidity is 55%.
A kind of protruding length × wide × height is adopted to be 8mm × 8mm × 8mm, protruding fore-and-aft clearance is the cutting poly (methyl methacrylate) plate of 3mm × 3mm, gap adds iron wire as receiving system, prepares the nano fibrous membrane with sparsity structure, and has the low filtration resistance of high filter effect, ventilative good nanometer film.Table 1 is the filter of sparsity structure nanometer film sample effect, filtration resistance, average pore size, the gas permeability test data that obtain.Fig. 2 is cutting poly (methyl methacrylate) plate and to cut poly (methyl methacrylate) plate, and it is the nano fibrous membrane that receiving system obtains that gap adds iron wire.The SEM that Fig. 3-5 is respectively sparsity structure nanometer film schemes, diameter distributes and graph of pore diameter distribution.
Embodiment 2
1.2g polyacrylonitrile is dissolved in the DMF of 8.8g, stirs 8h to dissolving completely, obtaining polyacrylonitrile/DMF spinning solution that concentration is 12% (gram/gram).Select the syringe of 10ml, the syringe needle of 0.5mm internal diameter, extract polyacrylonitrile/DMF spinning solution, be fixed on micro-injection pump.Carry out electrospinning by electrostatic spinning apparatus as shown in Figure 1, parameter is: voltage 12KV, receiving range 20cm, and injection rate is 0.6ml/h, and environment temperature is 25 DEG C, and envionmental humidity is 55%.
Adopt a kind of diameter of projection and be highly 10mm × 2mm, protruding fore-and-aft clearance is that the bubble wrap material of 1mm × 1mm adds coarse yarn as receiving system, prepare the nano fibrous membrane with sparsity structure, and there is the low filtration resistance of high filter effect, ventilative good nanometer film.Table 2 is the obtained filter of sparsity structure nanometer film sample effect, filtration resistance, average pore size, gas permeability test datas.Fig. 6 is bubble wrap material and adds with bubble wrap material the nano fibrous membrane that coarse yarn obtains for receiving system.The SEM that Fig. 7-9 is respectively sparsity structure nanometer film schemes, diameter distributes and graph of pore diameter distribution.
Embodiment 3
1.4g Kynoar is dissolved in the DMF of 8.6g, stirs 8h to dissolving completely, obtaining Kynoar/DMF spinning solution that concentration is 14% (gram/gram).Select the syringe of 10ml, the syringe needle of 0.5mm internal diameter, extract Kynoar/DMF spinning solution, be fixed on micro-injection pump.Carry out electrospinning by electrostatic spinning apparatus as shown in Figure 1, parameter is: voltage 12KV, receiving range 20cm, and injection rate is 0.6ml/h, and environment temperature is 25 DEG C, and envionmental humidity is 55%.
Adopt a kind of diameter of projection and be highly 10mm × 2mm, protruding fore-and-aft clearance is that the bubble wrap material of 1mm × 1mm adds fine yarn as receiving system, prepare the nano fibrous membrane with sparsity structure, and there is the low filtration resistance of high filter effect, ventilative good nanometer film.Table 3 is the obtained filter of sparsity structure nanometer film sample effect, filtration resistance, average pore size, gas permeability test datas.Figure 10 is bubble wrap material and adds with bubble wrap material the nano fibrous membrane that fine yarn obtains for receiving system.The SEM that Figure 11-13 is respectively sparsity structure nanometer film schemes, diameter distributes and graph of pore diameter distribution.
Embodiment 4
0.7g Kynoar and 0.7g polyacrylonitrile are dissolved in the DMF of 8.6g, stir 8h to dissolving completely, obtaining Kynoar/DMF spinning solution that concentration is 14% (gram/gram).Select the syringe of 10ml, the syringe needle of 0.5mm internal diameter, extract Kynoar/DMF spinning solution, be fixed on micro-injection pump.Carry out electrospinning by electrostatic spinning apparatus as shown in Figure 1, parameter is: voltage 12KV, receiving range 20cm, and injection rate is 0.6ml/h, and environment temperature is 25 DEG C, and envionmental humidity is 55%.
Adopt a kind of diameter of projection and be highly 10mm × 2mm, protruding fore-and-aft clearance is that the bubble wrap material of 1mm × 1mm adds fine yarn as receiving system, prepare the nano fibrous membrane with sparsity structure, and there is the low filtration resistance of high filter effect, ventilative good nanometer film.
Embodiment 5
Concentration 1.4g nylon 6 being dissolved in 8.6g is in the formic acid solution of 88%, stirring 8h to dissolving completely, obtaining Kynoar/DMF/DMA spinning solution that concentration is 14% (gram/gram).Select the syringe of 10ml, the syringe needle of 0.5mm internal diameter, extract Kynoar/DMF spinning solution, be fixed on micro-injection pump.Carry out electrospinning by electrostatic spinning apparatus as shown in Figure 1, parameter is: voltage 12KV, receiving range 20cm, and injection rate is 0.6ml/h, and environment temperature is 25 DEG C, and envionmental humidity is 55%.
A kind of protruding length × wide × height is adopted to be 8mm × 8mm × 8mm, protruding fore-and-aft clearance is the cutting poly (methyl methacrylate) plate of 3mm × 3mm, gap adds iron wire as receiving system, prepares the nano fibrous membrane with sparsity structure, and has the low filtration resistance of high filter effect, ventilative good nanometer film.
Embodiment 6
2g polystyrene is dissolved in the DMF of 6g and the oxolane of 2g, stirs 8h to dissolving completely, obtaining Kynoar/DMF/oxolane spinning solution that concentration is 20% (gram/gram).Select the syringe of 10ml, the syringe needle of 0.5mm internal diameter, extract Kynoar/DMF spinning solution, be fixed on micro-injection pump.Carry out electrospinning by electrostatic spinning apparatus as shown in Figure 1, parameter is: voltage 12KV, receiving range 20cm, and injection rate is 0.6ml/h, and environment temperature is 25 DEG C, and envionmental humidity is 55%.
A kind of protruding length × wide × height is adopted to be 8mm × 8mm × 8mm, protruding fore-and-aft clearance is the cutting poly (methyl methacrylate) plate of 3mm × 3mm, gap adds iron wire as receiving system, prepares the nano fibrous membrane with sparsity structure, and has the low filtration resistance of high filter effect, ventilative good nanometer film.
Table 1
Note: sample 1,2 and 3 is respectively and adopts cutting poly (methyl methacrylate) plate, and gap adds iron wire as receiving system, prepares the nano fibrous membrane with sparsity structure.
Table 2
Note: sample 1,2 and 3 is respectively and adopts bubble wrap material to add coarse yarn as receiving system, prepares the nano fibrous membrane with sparsity structure.
Table 3
Note: sample 1,2 and 3 is respectively and adopts bubble wrap material to add fine yarn as receiving system, prepares the nano fibrous membrane with sparsity structure.
Claims (8)
1. a method for electrospun nanofibers film, comprising:
(1) high molecular polymer is dissolved in solvent, stirs, obtain spinning solution;
(2) above-mentioned spinning solution is carried out electrostatic spinning, obtain nano fibrous membrane; Wherein the receiving system of electrostatic spinning is: insulation board or foam.
2. the method for a kind of electrospun nanofibers film according to claim 1, is characterized in that: in described step (1), high molecular polymer is one or more in polyacrylonitrile, poly-aspartate, polystyrene, Kynoar, shitosan, nylon 6.
3. the method for a kind of electrospun nanofibers film according to claim 1, it is characterized in that: in described step (1), solvent is N, one or more in dinethylformamide, DMA, formic acid, ethanol, methyl alcohol, acetic acid, trifluoroacetic acid, oxolane, acetone, carrene, chloroform, hexafluoroisopropanol.
4. the method for a kind of electrospun nanofibers film according to claim 1, is characterized in that: in described step (1), the mass percentage concentration of spinning solution is 8%-25%.
5. the method for a kind of electrospun nanofibers film according to claim 1, it is characterized in that: in described step (2), electrostatic spinning process parameter is: voltage is 1 ~ 50KV, syringe needle is 0.1 ~ 2m to reception template distance, spinnerette diameters is 1 μm ~ 2mm, spinning speed is 0.1 ~ 20mL/h, the spinning time is 8 ~ 10h, and environment temperature is 20 ~ 60 DEG C, and envionmental humidity is 20 ~ 80%.
6. the method for a kind of electrospun nanofibers film according to claim 1, is characterized in that: in described step (2), insulation board is the insulation board with bulge-structure; Foam is bulge-structure foamed material.
7. the method for a kind of electrospun nanofibers film according to claim 6, is characterized in that: described insulation board is poly (methyl methacrylate) plate, and the structure interval of insulation board adds iron wire; Yarn is added in foamed material.
8. the method for a kind of electrospun nanofibers film according to claim 6, is characterized in that: described insulation board projection is long × wide × high is 5-10mm × 5-10mm × 5-10mm, and protruding fore-and-aft clearance is 2-5mm × 2-5mm; The diameter of foam projection be highly 1-10mm × 1-10mm, protruding fore-and-aft clearance is 0.8-3mm × 0.8-3mm.
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| CN105749767A (en) * | 2015-07-22 | 2016-07-13 | 东华大学 | Electrostatic-spinning nano fiber air filter material and preparation method thereof |
| CN105821586A (en) * | 2016-04-18 | 2016-08-03 | 广州拜费尔空气净化材料有限公司 | Nano-fiber filtering material and preparation method thereof |
| CN106480608A (en) * | 2016-12-05 | 2017-03-08 | 青岛大学 | A kind of method that employing electrospinning processes prepare coloring sodium alginate nano fiber film |
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| CN106835503A (en) * | 2017-02-14 | 2017-06-13 | 中国人民解放军国防科学技术大学 | A kind of flexible Pd/SiOC nanofiber mats and preparation method thereof |
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Inventor after: Qin Xiaohong Inventor after: Lou Lihua Inventor after: Gao Hanchao Inventor after: Zhang Hongnan Inventor before: Qin Xiaohong Inventor before: Lou Lihua Inventor before: Zhang Hongnan |
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Application publication date: 20150617 |