CN110396771A - A kind of preparation method of nano fiber non-woven fabric - Google Patents
A kind of preparation method of nano fiber non-woven fabric Download PDFInfo
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- CN110396771A CN110396771A CN201910606609.6A CN201910606609A CN110396771A CN 110396771 A CN110396771 A CN 110396771A CN 201910606609 A CN201910606609 A CN 201910606609A CN 110396771 A CN110396771 A CN 110396771A
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
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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
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/06—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
- D01F11/04—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers
- D01F11/08—Chemical after-treatment of artificial filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
- D04H3/147—Composite yarns or filaments
-
- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention discloses a kind of preparation method of nano fiber non-woven fabric, thermodynamically incompatible thermoplastic polymer and matrix are compared into melt blending by certain mass, through melting extrusion, it is meltblown to obtain composite fibre, single layer composite fibre is deposited on the reception device, single layer composite fiber web is obtained by itself adhesive effect, then the stromatolysis in composite fiber web is removed using solvent, obtain the nanometer fiber net containing thermoplastic polymer phase, the second layer is successively collected on single layer nano fiber non-woven fabric using identical method again, third layer, ..., n-th layer polymeric nanofiber web, nano fiber non-woven fabric is obtained finally by hot rolling consolidation process.Nanofiber diameter can be prepared lower than 200nm in the present invention, and nano fiber non-woven fabric of the thickness at 0.2~5 μm has fibre diameter uniformity and intensity high, and preparation method is simple, at low cost, the advantages of can be prepared on a large scale.
Description
Technical field
The invention belongs to textile material preparation technical field more particularly to a kind of preparation methods of nano fiber non-woven fabric.
Background technique
In the development of fibre science and engineering, fiber fine is an important directions, and nanofiber refers to that diameter is
Nanoscale and the biggish filamentary material with certain draw ratio of length have very significant dimensional effect, light, heat,
Magnetic, electricity etc. show many new kink characteristics, and then assign the woven cloth as made from nanofiber or non-woven fabrics property,
Huge application value is embodied in fields such as clothes, food, medicine, the energy, electronics and aviations.However, usually said receives
Rice fiber is sensu lato nanofiber, i.e., fibre diameter is lower than 1 μm of fiber, and large scale preparation diameter is less than the fibre of 200nm
Dimension still has certain difficulty.At present the technology of preparing of nanofiber mainly include template synthesis method, phase separation method, self-assembly method,
Pulling method and method of electrostatic spinning etc..
Wherein, the technology for preparing nanofiber using phase separation method is more, and it is by two kinds that phase separation method, which prepares nanofiber,
Thermodynamically incompatible mixed with polymers spinning obtains composite fibre, then with suitable solvent dissolved matrix component, obtains target
The nanofiber of polymer.This method is suitable for producing thermoplastic polymer nanofiber fiber.Such as application No. is
The Chinese invention patent of 201710282915.X discloses a kind of production technology of nanofiber, by thermodynamically incompatible polymerization
After object and matrix are dissolved with solvent, it is configured to electrostatic spinning liquid, then electrostatic spinning obtains composite fibre, using dissolution by matrix
Dissolution removal obtains the polymer nanofiber that average diameter is lower than 100nm.This method uses solution electrostatic spinning, and there are molten
Agent selection is difficult, pollutes environment and problem at high cost, and uses solwution method, it is difficult to control two groups of polymer and individually stretch
At silk, it may cause and contain two kinds of polymer in single nanofiber precursor, after dissolution removes a wherein phase, nanofiber precursor
Fracture causes nanofiber intensity to decline.
Therefore, in order to solve the above problem, the present invention prepares nano-fiber cloth using melting extrusion phase separation method, is directed to simultaneously
When nano fiber non-woven fabric thickness is thicker, internal layer polymer to be separated is difficult to dissolve removal, leads to nano fiber non-woven fabric
Diameter is unevenly distributed, and the different problem of performance carries out technological improvement.
Summary of the invention
In view of the above-mentioned drawbacks of the prior art, it is an object of that present invention to provide a kind of preparations of nano fiber non-woven fabric
Method prepares nanofiber using melting extrusion phase separation method, and networking collected by layering and hot rolling treatment to obtain diameter low
It in the nano fiber non-woven fabric of 200nm, is accurately controlled using the thickness that this method prepares nano fiber non-woven fabric, can be made thick
Spend the nano fiber non-woven fabric down to 0.2~5 μm.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of preparation method of nano fiber non-woven fabric, which is characterized in that by thermodynamically incompatible thermoplastic polymer
Through melting extrusion, it is meltblown to obtain composite fibre, deposits compound fibre on the reception device than melt blending by certain mass with matrix
Dimension, obtains composite fiber web by itself adhesive effect；
The stromatolysis in composite fiber web is removed using solvent, the nanometer fiber net containing polymer is obtained, uses
Hot rolling treatment reinforces to obtain the nano fiber non-woven fabric containing the polymer.
Further, it when the composite fibre number of plies deposited in the composite fiber web is multilayer, first collects and obtains single layer
The composite fiber web is simultaneously removed stromatolysis using solvent, obtains single polymer layer nanometer fiber net；Then using identical
Method successively collect the second layer, third layer ... on single layer nano fiber non-woven fabric, n-th layer polymeric nanofiber web, most
The nano fiber non-woven fabric of the polymer must be contained by hot rolling consolidation process afterwards.
Further, the diameter of polymer nanofiber described in the nano fiber non-woven fabric≤200nm.
Further, the polymer and the mass ratio of matrix are 1:9~1:2.
Further, the thermoplastic polymer is polyvinyl alcohol, polyvinyl butyral, polypropylene, polyethylene, polyamides
Amine or thermoplastic polyurethane are any one or more of.
Further, the matrix is any one of cellulose acetate, ethyl cellulose or acetylbutyrylcellulose.
Further, the solvent is acetone or alcohol.
Further, the melt blending is carried out using double screw extruder, and each area's parameter of double screw extruder is set
It is set to: one Qu Wendu: 130~180 DEG C；Two area's temperature: 190~210 DEG C；Three Qu Wendu: 210~230 DEG C；Four Qu Wendu: 215
~235 DEG C；Five Qu Wendu: 215~250 DEG C.
Further, the melt-blown is blown using high-temperature high-pressure air flow, and the temperature of the high-temperature high-pressure air flow is 260~
280 DEG C, pressure is 0.15~0.25MPa；The reception device is lapper.
Further, the hot rolling treatment use double roller calender, hot-rolled temperature be 140~180 DEG C, pressure be 5~
20MPa, hot rolling time are 5~20s.
Beneficial effect
Compared with prior art, a kind of preparation method of nano fiber non-woven fabric provided by the invention has following beneficial to effect
Fruit:
(1) present invention prepares nanofiber using melting extrusion phase separation method, and is collected at networking and hot rolling by layering
Reason obtains the nano fiber non-woven fabric that diameter is lower than 200nm, can reach using the thickness that this method prepares nano fiber non-woven fabric
Nanoscale accurately controls, and thickness can be made down to 0.2~5 μm of nano fiber non-woven fabric.
(2) present invention reduces production cost, and no pollution to the environment without using solvent using melting phase separation method；
Furthermore using melting phase separation method, it is ensured that be drawn into during silk, two kinds of component precursor radial separations, remove matrix in dissolution
When, radially composition is constant for nanofiber, will not be broken, improve stability of fiber.
(3) present invention is received in the nano-fiber cloth being prepared by the way that melting extrusion, melt-blown and Hot Rolling Parameters are rationally arranged
The rice fibre diameter uniformity is high, and stability is high, and cohesive force is strong, and tensile strength is relatively high.
Detailed description of the invention
Fig. 1 is nano fiber non-woven fabric preparation technology flow chart；
Fig. 2 is that mutually separation prepares nano-fiber cloth schematic illustration for melting extrusion；
Fig. 3 is nano fiber non-woven fabric scanning electron microscope (SEM) photograph prepared by embodiment 1.
Specific embodiment
Clear, complete description is carried out below with reference to technical solution of the attached drawing to various embodiments of the present invention, it is clear that is retouched
The embodiment stated is only a part of the embodiments of the present invention, instead of all the embodiments；Based on the embodiment of the present invention, originally
Field those of ordinary skill obtained all other embodiment without making creative work, belongs to this hair
Bright protected range.
As shown in Figure 1 be preparation technology flow chart of the present invention, select two groups of thermodynamically incompatible thermoplastic polymers with
Matrix squeezes out after melt blending from spinneret orifice in double screw extruder, is meltblown using high-temperature high-pressure air flow, what is stretched answers
Condensating fiber long filament obtains composite fiber web by itself adhesive effect in cold air after solidification deposition, then with can dissolve
The solvent of matrix removes the stromatolysis in composite fiber web, obtains the nanometer fiber net containing the thermoplastic polymer,
Then the second layer, third layer ..., n-th layer polymer are successively collected on single layer nano fiber non-woven fabric using identical method
Nanometer fiber net obtains the nano fiber non-woven fabric containing the polymer finally by hot rolling consolidation process.
After making dissolution removal matrix, superfine nano fiber is obtained, the mass ratio of the polymer and matrix is 1:9~1:
2, it is therefore preferable to 1:9~1:4, it is therefore an objective to make matrix content much larger than polymer content, form similar " sea-island " structure and be blended
Object facilitates formation during being meltblown into silk and separates fiber filament.
The matrix is any one of cellulose acetate, ethyl cellulose or acetylbutyrylcellulose, it is therefore preferable to vinegar
Sour cellulose butyrate (CAB), CAB good film-forming property, and dissolving in acetone equal solvent facilitate fiber networking, and soluble go
It removes.
The thermoplastic polymer is polyvinyl alcohol (PVA), polyvinyl butyral (PVB), polypropylene (PP), polyethylene
(PE), polyamide or thermoplastic polyurethane are any one or more of, it is therefore preferable to which polyvinyl alcohol, gathers polyvinyl butyral
One of propylene and polyamide are a variety of.
Each area's parameter setting of double screw extruder are as follows: one Qu Wendu: 130~180 DEG C；Two area's temperature: 190~210
℃；Three Qu Wendu: 210~230 DEG C；Four Qu Wendu: 215~235 DEG C；Five Qu Wendu: 215~250 DEG C.
Specifically, setting each suitable temperature in area according to the melting temperature of thermoplastic polymer and melt index, such as work as
When thermoplastic polymer is polypropylene, each area's parameter setting of double screw extruder is preferred are as follows: one Qu Wendu: 130 DEG C；Two area's temperature
Degree: 190 DEG C；Three Qu Wendu: 210 DEG C；Four Qu Wendu: 220 DEG C；Five Qu Wendu: 230 DEG C.
The present invention prepares the schematic diagram of nano fiber non-woven fabric as shown in Fig. 2, since thermoplastic polymer and matrix are heat
Two kinds of incompatible components of mechanics form two kinds of dispersed phases in Fig. 2 in melt blending body, when matrix content is much larger than heat
When thermoplastic polymer content, thermoplastic polymer is homogeneously dispersed in matrix, forms similar " sea-island " structure melt blending
Object when spraying from spinneret orifice, under high-temperature high-pressure air flow melt-blown effect, gradually forms composite fibre long filament, composite fibre long filament
Composition as shown in figure 2, since polymer is incompatible with matrix thermodynamics, during being meltblown into silk, the independent shape of polymer
At nanofiber long filament, matrix is longitudinally continuous phase in outer layer formation, since matrix film forming is preferable, is conducive on collection device
Networking is collected, composite fiber web is obtained by itself adhesive effect, after then dissolving removal matrix with solvent, obtains polymer
Nanometer fiber net is reinforced to obtain nano fiber non-woven fabric by double roller calender hot rolling, receives in the nano-fiber cloth being prepared
The rice fibre diameter uniformity is high, and stability is high, and cohesive force is strong, and tensile strength is relatively high.
Embodiment 1
A kind of preparation method of nano fiber non-woven fabric, it is characterised in that the following steps are included:
S1. polypropylene (PP) and acetylbutyrylcellulose (CAB) 1:9 in mass ratio are melted altogether in double screw extruder
Mixed, each area's parameter setting of double screw extruder is preferred are as follows: one Qu Wendu: 130 DEG C；Two area's temperature: 190 DEG C；Three Qu Wendu: 210
℃；Four Qu Wendu: 220 DEG C；Five Qu Wendu: 230 DEG C；
S2. it will enter in manifold after the filtering flow after melting, be extruded into silk by spinneret；
S3. use temperature for 260~280 DEG C, the high-temperature high-pressure air flow that pressure is 0.15~0.25MPa is meltblown, in high speed
Melt is drawn into superfine fibre under the action of thermal current, and it is long by the heat exchange with ambient cold air to be solidified into composite fibre
Silk, collects networking using lapper and obtains composite fiber web, controls composite fiber web by control spin rate and networking time
Thickness；
S4. composite fiber web is immersed in acetone, carries out ultrasonic extraction in acetone, removed CAB, obtain polypropylene nano
Web；
S5. hot rolling is carried out to polypropylene nano web using double roller calender to reinforce to obtain polypropylene nano fiber non-woven
Cloth, the hot-rolled temperature are 140~160 DEG C, and pressure is 5~12MPa, and the hot rolling time is 5~10s.
Embodiment 2
Embodiment 2 provides a kind of preparation method of nano fiber non-woven fabric, comprising the following steps:
S1. polypropylene (PP) and acetylbutyrylcellulose (CAB) 1:9 in mass ratio are melted altogether in double screw extruder
Mixed, each area's parameter setting of double screw extruder is preferred are as follows: one Qu Wendu: 130 DEG C；Two area's temperature: 190 DEG C；Three Qu Wendu: 210
℃；Four Qu Wendu: 220 DEG C；Five Qu Wendu: 230 DEG C；
S2. it will enter in manifold after the filtering flow after melting, be extruded into silk by spinneret；
S3. use temperature for 260~280 DEG C, the high-temperature high-pressure air flow that pressure is 0.15~0.25MPa is meltblown, in high speed
Melt is drawn into superfine fibre under the action of thermal current, and it is long by the heat exchange with ambient cold air to be solidified into composite fibre
Silk, collects networking using lapper and obtains composite fiber web, controls composite fiber web by control spin rate and networking time
Thickness；
S4. composite fiber web is immersed in acetone, carries out ultrasonic extraction in acetone, removed matrix CAB, obtain polypropylene
Nanometer fiber net；
S5. step S4 is obtained into polypropylene nano web as template, continues to deposit composite fibre on its surface, lays equal stress on
Multiple step S3 and S4, then the 3rd layer and the 4th layer polypropylene nanometer fiber net are successively collected using identical method；
S6. hot rolling is carried out to polypropylene nano web using double roller calender to reinforce to obtain polypropylene nano fiber non-woven
Cloth, the hot-rolled temperature are 140~160 DEG C, and pressure is 5~12MPa, and the hot rolling time is 5~10s.
Embodiment 3~8
Embodiment 3~8 compared with Example 1, the difference is that, the polypropylene nano fabric nonwoven cloth preparation condition
As shown in table 1, other are all the same with embodiment 1.
1 embodiment of table, 3~8 nano fiber non-woven fabric preparation condition
Polypropylene nano fabric nonwoven cloth average fibre diameter and nonwoven thickness such as 2 institute of table is prepared in Examples 1 to 8
Show, it can be seen that as polypropylene (PP) and acetylbutyrylcellulose (CAB) mass ratio increase, polypropylene nano fiber is average
Diameter and single-layer nonwoven thickness are all gradually increased, and illustrate suitably to increase CAB content, help to reduce nanofiber diameter.This
It is because CAB can more efficiently prevent PP melting behaviors from becoming larger in dynamic analysis of spinning, and PP phase is with lesser grain when CAB content increases
Diameter is stretched refinement under melt-blown effect, obtains polypropylene nano web after dissolving CAB.Nanofiber prepared by embodiment 1
Non-woven fabrics is single layer, and thickness is down to 0.21 μm, from figure 3, it can be seen that the polypropylene of nano fiber non-woven fabric prepared by embodiment 1
Nanofiber diameter is evenly distributed.Four layers of nonwoven thickness that embodiment 2 is prepared by plane SH wave are 0.85 μm, illustrate with
Polypropylene fibre deposits the number of plies and increases, and nonwoven thickness increases, it can carries out nanoscale regulation to nonwoven thickness.
Polypropylene nano fabric nonwoven cloth average fibre diameter and nonwoven thickness is prepared in 2 Examples 1 to 8 of table
Embodiment 9~14
Embodiment 9~14 compared with Example 1, the difference is that, blend composition, solvent type and melting are squeezed
Parameter is as shown in table 3 out, other are all the same with embodiment 1.
3 embodiment of table, 9~14 blend composition, solvent type and melting extrusion parameter
Polypropylene nano fabric nonwoven cloth average fibre diameter and nonwoven thickness such as table 4 is prepared in embodiment 9~14
It is shown, it can be seen that nano fiber non-woven fabric preparation method provided by the invention to be used, to the different incompatible polymerizations of thermodynamics
Average fibre diameter can be obtained less than 200nm, thickness down to 0.22~0.24 μm of nano fiber non-woven fabric in object and matrix.
The polypropylene nano fabric nonwoven cloth average fibre diameter and nonwoven thickness of 4 embodiment 9~14 of table preparation
| Embodiment | Composite fibre average diameter (nm) | Polypropylene nano average fibre diameter (nm) | Nonwoven thickness (μm) |
| 9 | 482 | 60 | 0.22 |
| 10 | 485 | 63 | 0.22 |
| 11 | 500 | 68 | 0.23 |
| 12 | 493 | 65 | 0.22 |
| 13 | 505 | 73 | 0.24 |
| 14 | 485 | 63 | 0.23 |
Embodiment 15~18
Embodiment 15~18 compared with Example 1 the difference is that, polymer is multicomponent, and composite Nano is prepared
Fabric nonwoven cloth, matrix are both preferably acetylbutyrylcellulose, and solvent is preferably acetone, polymer composition and melting extrusion parameter
As shown in table 5, other are all the same with embodiment 1.
5 embodiment of table, 15~18 polymer composition and melting extrusion parameter
Polypropylene nano fabric nonwoven cloth average fibre diameter and nonwoven thickness such as table 6 is prepared in embodiment 15~18
It is shown, it can be seen that nano fiber non-woven fabric preparation method provided by the invention is used, it is equally applicable to multicomponent polymeric,
Average fibre diameter can be obtained less than 200nm, thickness down to 0.22~0.25 μm of nano fiber non-woven fabric, to assign nonwoven
The diversity of cloth performance.
The polypropylene nano fabric nonwoven cloth average fibre diameter and nonwoven thickness of 6 embodiment 15~18 of table preparation
| Embodiment | Composite fibre average diameter (nm) | Polypropylene nano average fibre diameter (nm) | Nonwoven thickness (μm) |
| 15 | 496 | 72 | 0.24 |
| 16 | 485 | 66 | 0.22 |
| 17 | 500 | 76 | 0.25 |
| 18 | 493 | 69 | 0.23 |
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of nano fiber non-woven fabric, which is characterized in that by thermodynamically incompatible thermoplastic polymer and
Matrix, than melt blending, through melting extrusion, is meltblown to obtain composite fibre, deposits composite fibre on the reception device by certain mass,
Composite fiber web is obtained by itself adhesive effect；
The stromatolysis in composite fiber web is removed using solvent, the nanometer fiber net containing polymer is obtained, using hot rolling
Processing reinforces and obtains the nano fiber non-woven fabric containing the polymer.
2. a kind of preparation method of nano fiber non-woven fabric according to claim 1, which is characterized in that when the compound fibre
When the composite fibre number of plies deposited in dimension net is multilayer, first collects and obtain composite fiber web described in single layer and use solvent by matrix
Dissolution removal, obtains single polymer layer nanometer fiber net；Then using identical method on single layer nano fiber non-woven fabric according to
The secondary collection second layer, third layer ..., n-th layer polymeric nanofiber web are obtained finally by hot rolling consolidation process containing described
The nano fiber non-woven fabric of polymer.
3. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the nanometer
The diameter of polymer nanofiber described in fabric nonwoven cloth≤200nm.
4. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the polymerization
Object and the mass ratio of matrix are 1:9~1:2.
5. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the thermoplastic
Property polymer be polyvinyl alcohol, polyvinyl butyral, polypropylene, polyethylene, polyamide or thermoplastic polyurethane in any
Kind is a variety of.
6. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the matrix
For any one of cellulose acetate, ethyl cellulose or acetylbutyrylcellulose.
7. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the solvent
For acetone or alcohol.
8. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the melting
It is blended and is carried out using double screw extruder, each area's parameter setting of double screw extruder are as follows: one Qu Wendu: 130~180 DEG C；
Two area's temperature: 190~210 DEG C；Three Qu Wendu: 210~230 DEG C；Four Qu Wendu: 215~235 DEG C；Five Qu Wendu: 215~250
℃。
9. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the melt-blown
It is blown using high-temperature high-pressure air flow, the temperature of the high-temperature high-pressure air flow is 260~280 DEG C, and pressure is 0.15~0.25MPa；
The reception device is lapper.
10. a kind of preparation method of nano fiber non-woven fabric according to claim 1 or 2, which is characterized in that the hot rolling
Processing uses double roller calender, and hot-rolled temperature is 140~180 DEG C, and pressure is 5~20MPa, and the hot rolling time is 5~20s.
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| CN111455566A (en) * | 2020-03-10 | 2020-07-28 | 武汉纺织大学 | Composite nanofiber membrane and preparation method thereof |
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| CN108532016A (en) * | 2017-03-03 | 2018-09-14 | 长丰纺织科技股份有限公司 | Thermoplastic polymer nanofiber fiber and its manufacturing method |
| CN106978647A (en) * | 2017-04-26 | 2017-07-25 | 四川大学 | A kind of production technology of nanofiber |
| CN108727753A (en) * | 2018-06-11 | 2018-11-02 | 中原工学院 | A kind of preparation method of thermoplastic polyurethane nanofiber/polyvinyl alcohol composite hydrogel |
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| CN111455566A (en) * | 2020-03-10 | 2020-07-28 | 武汉纺织大学 | Composite nanofiber membrane and preparation method thereof |
| CN111455566B (en) * | 2020-03-10 | 2021-12-24 | 武汉纺织大学 | Composite nanofiber membrane and preparation method thereof |
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