CN107675362A - A kind of Kynoar/polysulfonamides composite nano fiber net and preparation method thereof - Google Patents
A kind of Kynoar/polysulfonamides composite nano fiber net and preparation method thereof Download PDFInfo
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- CN107675362A CN107675362A CN201710951382.XA CN201710951382A CN107675362A CN 107675362 A CN107675362 A CN 107675362A CN 201710951382 A CN201710951382 A CN 201710951382A CN 107675362 A CN107675362 A CN 107675362A
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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
-
- 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
- D01D1/02—Preparation of spinning solutions
-
- 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
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- 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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
-
- 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
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
Abstract
The present invention relates to the preparation field of nanofiber, more particularly to a kind of Kynoar/polysulfonamides composite nano fiber net and preparation method thereof.The PVDF spinning solutions that the content that its preparation method of Kynoar provided by the invention/polysulfonamides composite nano fiber net includes first preparing Kynoar is 10 14wt%, then mixed with 10 14wt%PSA spinning solutions, Kynoar/polysulfonamides composite nano fiber is obtained using electrostatic spinning process.The preparation method step of Kynoar provided by the invention/polysulfonamides composite nano fiber net is simple, workable, no industrial pollution generation and production cost is relatively low, and security is higher.Possess high crystallinity with Kynoar/polysulfonamides composite nano fiber net for preparing of the present invention, hydrophilicity is good, mechanical property, uvioresistant performance are excellent, can expand the use applied to the field such as protection, shielding, service life length.
Description
Technical field
The present invention relates to the preparation field of nanofiber, more particularly to a kind of Kynoar/polysulfonamides composite Nano
Web and preparation method thereof.
Background technology
Kynoar is with its excellent chemical stability, radiation resistance, ultraviolet-resistent property, heat endurance and easy film forming etc.
Advantage becomes the important materials for preparing milipore filter.But pvdf membrane is easy to shrink in the drying process so that at certain
The film come is made under the conditions of a little can become clear-cut and can not use.Secondly pvdf membrane is apolar substance, therefore with strong hydrophobic
Property.In actual application, because the strong-hydrophobicity on film surface can cause organic matter easily to cause film dirty in its adsorption
Dye, makes the service life of film reduce.
Polysulfonamides has excellent hydrophily, heat endurance, chemical stability etc., can be applied to high-temperature operation and boat
Its aviation field, secondly surface specific resistance higher PSA and limited oxygen index can make it in high-temperature-resistant filtering material, protection system
The fields such as product, electrically insulating material and cellular structural material have wide application.But due to the acid amides on PSA macromolecular chains
Group is easy to be broken under the irradiation of ultraviolet light, therefore uvioresistant performance is very poor.The beginning of the eighties, researchers are opened
Begin research polysulfonamides material, is mainly used in fur industries, paper industry, brewing industry and bio-pharmaceuticals etc.
Ultrafiltration Membrane of Polysulfon-Polyamide and Psa Ro Membranes etc., etc..
At present, the main pooled applications of nanometer fiber net formed with electrostatic spinning technique manufacture work in human organ tissue
Journey, optical field, filtering material and protective equipment etc..The nano-grade size of electrostatic spinning nano fiber net, porous, high-specific surface area
The features such as unique advantage can be played in human organ field, medicament slow release field, field of energy environment etc..Fuel cell, too
Positive energy battery, superbattery and optical field are studied using electrostatic spinning nano fiber net.The spy of electrostatic spinning fiber
It is big that point is that its light weight, internal void connection good penetrability and its diameter can reach Nano grade, surface area, turns into system
Make the optimal material of filtering material.
The content of the invention
Comprehensive the research application to Kynoar and modified situation both at home and abroad at present, for polysulfonamides it is some itself
Deficiency and to the electro-spinning of nano-scale fiber for demand situations such as, the present invention proposes to prepare using the method for electrostatic spinning
Kynoar/polysulfonamides composite nano fiber net, allows it to have good uvioresistant performance, mechanical property, heat endurance
Can, moisture pick-up properties etc.；Expand the application in ultrafiltration, protection, electricity etc..
, should it is an object of the invention to provide a kind of preparation method of Kynoar/polysulfonamides composite nano fiber net
Web has good uvioresistant performance, mechanical property, thermal stability, moisture pick-up properties etc..
To achieve these goals, the technical scheme taken of the present invention is：
The preparation method of Kynoar/polysulfonamides composite nano fiber net, comprises the following steps：
(1) Kynoar is added in solvent, stirs and defoam to obtain PVDF spinning solutions so that in PVDF spinning solutions
The content of Kynoar is 10-14wt%；The solvent includes dimethylformamide；
(2) PVDF spinning solutions and 10-14wt%PSA spinning solutions resulting in step (1) are stirred, then disappeared
Bubble, Kynoar/polysulfonamides composite nano fiber is obtained using electrostatic spinning process.Only 10-14wt%PVDF spinning
Liquid and 10-14wt%PSA spinning solutions are engaged, and could obtain that Kynoar/polysulfonamides is compound to be received with electrostatic spinning process
Rice fiber.Viscosity is too high, too low that Kynoar/polysulfonamides composite nano fiber all can not successfully be made.
Preferably, solvent also includes acetone described in the step (1)；The mass ratio of dimethylformamide and acetone is 1-
2.5：1.Preferably, the mass ratio of the dimethylformamide/acetone is 2-2.5：1.The research of Kynoar (PVDF) with
And it is modified often reach optimization modification purpose using inorganic material is blended, for example SiO2、TiO2Etc. inorganic material, but it is logical
Often the sample prepared can be caused agglomeration occur.The invention uses dimethylformamide and acetone two-component
Solvent dissolves Kynoar powder, can obtain effect more more preferable than dimethylformamide.Beneficial effect：1. use this pair of group
The Kynoar spinning solution that part solvent is prepared, under electrostatic spinning process preparation, polyvinylidene fluoride nanometer can be obtained
A series of web, and tests are carried out to the web, its crystallinity, strength, heat endurance and is all significantly increased, and this
The prominent effect premise of kind need to be less than the addition of dimethylformamide for the addition of acetone, and no person will cannot get beneficial effect.
2. secondly because the Kynoar spinning solution drawn is prepared using single component solvent dimethylformamide, because the solvent is
A kind of difficult solvent flashing, under electrostatic spinning process preparation, what is obtained is not polyvinylidene fluoride nanometer web, but fine and close
Polyvinylidene fluoride film, it can so deepen subsequently to prepare the difficulty of Kynoar/polysulfonamides composite nano fiber net.
Preferably, in the step (2), when the PVDF spinning solutions and PSA spinning solutions are stirred ultrasonic mixing, wherein
The mass ratio of Kynoar/polysulfonamides is 0.4-2.5：1.
Preferably, in the step (2), the technological parameter of electrostatic spinning is electrostatic pressure 30kV, receives distance and is
15cm, pushing speed 0.003mm/s, reception device are Rotation of receiver, and reception revolution is 40r/min, and the spinning time is
120min。
Preferably, electrostatic field environment temperature is more than 30 DEG C, and humidity is less than 20%.
Preferably, in the step (1), stir as mechanical agitation, duration 15-25min；Debubbling method defoams for ultrasound,
Shi Changwei 50-70min.
Preferably, in the step (2), debubbling method for ultrasound defoam, when a length of 25-35min.
Kynoar/polysulfonamides composite nano fiber net prepared by above-mentioned preparation method.
The present invention is advantageous in that：
(1) Kynoar provided by the invention/polysulfonamides composite nano fiber net possesses high crystallinity, using poly-
Crystalline phase material in vinylidene successfully compensate for deficiency of the polysulfonamides in mechanical property.
(2) Kynoar provided by the invention/its uvioresistant performance of polysulfonamides composite nano fiber net is excellent, can open up
Exhibition is applied to the use in the field such as protection, shielding.
(3) Kynoar provided by the invention/polysulfonamides composite nano fiber net possesses preferable hydrophilicity, can
The strong-hydrophobicity for solving pure polyvinylidene fluoride film surface can be so that organic matter easily pollutes in its adsorption, and it uses the longevity
The problem of life reduces.
(4) the preparation method step of Kynoar provided by the invention/polysulfonamides composite nano fiber net is simple, can
Strong operability, no industrial pollution generation and production cost is relatively low, security is higher.
Brief description of the drawings
Fig. 1 is microscopic appearance figure of the PVDF/PSA composite nano fibers net under ESEM.
Fig. 2 is the scanning electron microscope (SEM) photograph of PVDF tunica fibrosas.
Fig. 3 is mass ratio 7：The scanning electron microscope (SEM) photograph of 3 PVDF/PSA composite nano fiber nets.
Fig. 4 is mass ratio 1：The scanning electron microscope (SEM) photograph of 1 PVDF/PSA composite nano fiber nets.
Fig. 5 is mass ratio 3：The scanning electron microscope (SEM) photograph of 7 PVDF/PSA composite nano fiber nets.
Fig. 6 is the scanning electron microscope (SEM) photograph of PSA nanometer fiber nets.
Fig. 7 is the thermal stability analysis chart of PVDF/PSA composite nano fiber nets.Wherein, 1 is PVDF/PSA (10/0),
2 be PVDF/PSA (7/3), and 3 be PVDF/PSA (5/5), and 4 be PVDF/PSA (3/7), and 5 be PVDF/PSA (0/10).
Fig. 8 is the contact angle figure of PVDF tunica fibrosas.
Fig. 9 is mass ratio 7：The contact angle figure of 3 PVDF/PSA composite nano fiber nets.
Figure 10 is mass ratio 5：5、3：7th, the contact angle change procedure figure of PSA nanometer fiber nets.
Figure 11 is the mechanical property comparison diagram of PVDF/PSA composite nano fiber nets.
Figure 12 is the uvioresistant performance comparison diagram of PVDF/PSA composite nano fiber nets.
Figure 13 is the permeability comparison diagram of PVDF/PSA composite nano fiber nets.
Embodiment
With reference to embodiment, the present invention is expanded on further.
Raw material：Kynoar solid powder, 12wt% polysulfonamides spinning solution, dimethylformamide, acetone.
Equipment：LE104E/02 types balance, KQ-700B types ultrasonic cleaner, JB90-D type powerful motors mixer,
The rotary Dynamic electrostatic spinning machines of RES-001.
Comparative example 1
(1) configuration of Kynoar spinning solution：
Dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 7/3 mass ratio, weighs a certain amount of polyvinylidene fluoride
Alkene powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein PVDF in PVDF spinning solutions
Content be 12wt%.
(2) prepared by electrostatic spinning：
By above-mentioned Kynoar spinning solution ultrasound defoaming 60min.Using electrostatic spinning process, receive distance and be set as
15cm, the pushing speed for injecting mercury are 0.003mm/s, and electrostatic field magnitude of voltage is 30kV, and receiver roller revolution is 40r/min,
Below 20%, the spinning time is 120min for more than 30 degree of room temperature holding and air humidity.Kynoar fibre is prepared
Tie up film.
(3) performance of the polyvinylidene fluoride film is as follows：The film does not show nano level fibre structure (Fig. 2)；Heat
Stability (Fig. 7), mechanical property (Figure 11), uvioresistant performance (Figure 12) performance are the most excellent；Contact angle is 113 ° (Fig. 8),
Show hydrophobic performance.
Comparative example 2
(1) dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 3/7 mass ratio, weighed a certain amount of poly- inclined
PVF powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein in PVDF spinning solutions
PVDF content is 12wt%.
(2) prepared by electrostatic spinning：
By above-mentioned Kynoar spinning solution ultrasound defoaming 60min.Using electrostatic spinning process, receive distance and be set as
15cm, the pushing speed for injecting mercury are 0.003mm/s, and electrostatic field magnitude of voltage is 30kV, and receiver roller revolution is 40r/min,
Below 20%, the spinning time is 120min for more than 30 degree of room temperature holding and air humidity.Kynoar fibre is prepared
Tie up net.
(4) performance of the polyvinylidene fluoride net is as follows：The net shows hydrophobic performance, compared to comparative example 1, changes net
Crystallinity, mechanical property, uvioresistant performance has its serious decline.
Comparative example 3
(1) configuration of polysulfonamides spinning solution：
12wt% polysulfonamides spinning solution is provided by Shanghai spy's spandex fibre Co., Ltd.
(2) prepared by electrostatic spinning：
By above-mentioned polysulfonamides spinning solution ultrasound defoaming 60min.Using electrostatic spinning process, receive distance and be set as
15cm, the pushing speed for injecting mercury are 0.003mm/s, and electrostatic field magnitude of voltage is 30kV, and receiver roller revolution is 40r/min,
Below 20%, the spinning time is 120min for more than 30 degree of room temperature holding and air humidity.Polysulfonamides nanometer is prepared
Web.
(4) performance of the polysulfonamides nanometer fiber net is as follows：The web shows nano level fiber (Fig. 6)；Its
Thermal stability (Fig. 7), mechanical property (11), uvioresistant performance (12) are not as the fibre in reference examples 1 and embodiment 1,2,3
Tie up net；Show hydrophilicity (Figure 10).
Comparative example 4
(1) configuration of Kynoar spinning solution：
Dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 7/3 mass ratio, weighs a certain amount of polyvinylidene fluoride
Alkene powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein PVDF in PVDF spinning solutions
Content be 15wt%.
(2) configuration of polysulfonamides spinning solution：
15wt% polysulfonamides spinning solution is provided by Shanghai spy's spandex fibre Co., Ltd.
(3) prepared by electrostatic spinning：
Above-mentioned Kynoar spinning solution and polysulfonamides spinning solution are mixed for 7/3,5/5,3/7 ratio in mass ratio
Close stirring and ultrasound defoaming 30min；Using electrostatic spinning process, receive distance and be set as 15cm, the pushing speed for injecting mercury is
0.003mm/s, electrostatic field magnitude of voltage are 30kV, and receiver roller revolution is 40r/min, and room temperature keeps more than 30 degree and air
Humidity is below 20%.Because the blend spinning fluid viscosity is too high, syringe needle is easily blocked, networking is difficult, and obtained fiber does not connect
It is continuous.
Embodiment 1
(1) configuration of Kynoar spinning solution：
Dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 7/3 mass ratio, weighs a certain amount of polyvinylidene fluoride
Alkene powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein PVDF in PVDF spinning solutions
Content be 12wt%.
(2) configuration of polysulfonamides spinning solution：
12wt% polysulfonamides spinning solution is provided by Shanghai spy's spandex fibre Co., Ltd.
(3) prepared by electrostatic spinning：
Above-mentioned Kynoar spinning solution and polysulfonamides spinning solution are mixed simultaneously for 7/3 ratio in mass ratio
Ultrasound defoaming 30min；Using electrostatic spinning process, receive distance and be set as 15cm, the pushing speed for injecting mercury is 0.003mm/
S, electrostatic field magnitude of voltage are 30kV, and receiver roller revolution is 40r/min, and more than 30 degree of room temperature holding and air humidity exist
Less than 20%, the spinning time is 120min.Kynoar/polysulfonamides composite nano fiber net is prepared.
(4) performance of the Kynoar/polysulfonamides composite nano fiber net is as follows：The web shows nanoscale
Fiber (Fig. 3)；Compared with the polysulfonamides nanometer fiber net of gained in comparative example 3, its thermal stability (Fig. 7), mechanical property
Energy (11), uvioresistant performance (12) dramatically increase；Contact angle is 131.2 ° (Fig. 9), shows hydrophobic performance.
Embodiment 2
(1) configuration of Kynoar spinning solution：
Dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 7/3 mass ratio, weighs a certain amount of polyvinylidene fluoride
Alkene powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein PVDF in PVDF spinning solutions
Content be 12wt%.
(2) configuration of polysulfonamides spinning solution：
12wt% polysulfonamides spinning solution is provided by Shanghai spy's spandex fibre Co., Ltd.
(3) prepared by electrostatic spinning：
Above-mentioned Kynoar spinning solution and polysulfonamides spinning solution are mixed simultaneously for 5/5 ratio in mass ratio
Ultrasound defoaming 30min；Using electrostatic spinning process, receive distance and be set as 15cm, the pushing speed for injecting mercury is 0.003mm/
S, electrostatic field magnitude of voltage are 30kV, and receiver roller revolution is 40r/min, and more than 30 degree of room temperature holding and air humidity exist
Less than 20%, the spinning time is 120min.Kynoar/polysulfonamides composite nano fiber net is prepared.
(4) performance of the Kynoar/polysulfonamides composite nano fiber net is as follows：The web shows nanoscale
Fiber (Fig. 4)；Compared with the polysulfonamides nanometer fiber net of gained in reference examples 3, its thermal stability (Fig. 7), mechanical property
Energy (11), uvioresistant performance (12) dramatically increase；Show as hydrophilicity (Figure 10).Secondly in Kynoar/polysulfonamides
When mass mixing ratio is 1/1, there is good air permeable effect.
Embodiment 3
(1) configuration of Kynoar spinning solution：
Dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 7/3 mass ratio, weighs a certain amount of polyvinylidene fluoride
Alkene powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein PVDF in PVDF spinning solutions
Content be 12wt%.
(2) configuration of polysulfonamides spinning solution：
12wt% polysulfonamides spinning solution is provided by Shanghai spy's spandex fibre Co., Ltd.
(3) prepared by electrostatic spinning：
Above-mentioned Kynoar spinning solution and polysulfonamides spinning solution are mixed simultaneously for 3/7 ratio in mass ratio
Ultrasound defoaming 30min；Using electrostatic spinning process, receive distance and be set as 15cm, the pushing speed for injecting mercury is 0.003mm/
S, electrostatic field magnitude of voltage are 30kV, and receiver roller revolution is 40r/min, and more than 30 degree of room temperature holding and air humidity exist
Less than 20%, the spinning time is 120min.Kynoar/polysulfonamides composite nano fiber net is prepared.
(4) performance of the Kynoar/polysulfonamides composite nano fiber net is as follows：The web shows nanoscale
Fiber (Fig. 5)；Compared with the polysulfonamides nanometer fiber net of gained in reference examples 3, its thermal stability (Fig. 7), mechanical property
Can the substantially increase of (11), uvioresistant performance (12)；Show as hydrophilicity (Figure 10).
Embodiment 4
(1) configuration of Kynoar spinning solution：
Dimethylformamide/acetone (DMF/AC) mixed solvent is prepared according to 5/5 mass ratio, weighs a certain amount of polyvinylidene fluoride
Alkene powder adds the in the mixed solvent, and mechanical agitation and ultrasound, which defoam, obtains PVDF spinning solutions；Wherein PVDF in PVDF spinning solutions
Content be 12wt%.
(2) configuration of polysulfonamides spinning solution：
12wt% polysulfonamides spinning solution is provided by Shanghai spy's spandex fibre Co., Ltd.
(3) prepared by electrostatic spinning：
Above-mentioned Kynoar spinning solution and polysulfonamides spinning solution are stirred for 7/3 ratio mixing in mass ratio respectively
Mix and ultrasound defoams 30min；Using electrostatic spinning process, receive distance and be set as 15cm, the pushing speed for injecting mercury is
0.003mm/s, electrostatic field magnitude of voltage are 30kV, and receiver roller revolution is 40r/min, and room temperature keeps more than 30 degree and air
For humidity below 20%, the spinning time is 120min.Kynoar/polysulfonamides composite nano fiber net is prepared.
(5) performance of the Kynoar/polysulfonamides composite nano fiber net is as follows：The web shows nanoscale
Fiber；Compared with Kynoar/polysulfonamides composite nano fiber net of gained in embodiment 1, its thermal stability, power
Learn performance, uvioresistant performance is decreased obviously；Show as hydrophobic performance.
Technical scheme and beneficial effect are described in detail embodiment described above, it should be understood that
The specific embodiment of the present invention is the foregoing is only, is not intended to limit the invention, it is all to be done in the spirit of the present invention
Any modification and improvement etc., should be included in the scope of the protection.
Claims (9)
1. the preparation method of a kind of Kynoar/polysulfonamides composite nano fiber net, it is characterised in that including following step
Suddenly：
(1) Kynoar is added in solvent, stirs and defoam to obtain PVDF spinning solutions so that gathered in PVDF spinning solutions inclined
The content of PVF is 10-14wt%；The solvent includes dimethylformamide；
(2) PVDF spinning solutions and 10-14wt%PSA spinning solutions resulting in step (1) are stirred, then defoam, make
Kynoar/polysulfonamides composite nano fiber is obtained with electrostatic spinning process.
2. according to the preparation method of Kynoar in claim 1/polysulfonamides composite nano fiber net, it is characterised in that：
Solvent also includes acetone described in the step (1)；The mass ratio of dimethylformamide and acetone is 1-2.5：1.
3. according to the preparation method of Kynoar in claim 2/polysulfonamides composite nano fiber net, it is characterised in that：
The mass ratio of the dimethylformamide and acetone is 2-2.5：1.
4. according to the preparation method of Kynoar in claim 1/polysulfonamides composite nano fiber net, it is characterised in that：
In the step (2), when the PVDF spinning solutions and PSA spinning solutions are stirred ultrasonic mixing, wherein Kynoar/polysulfones
The mass ratio of acid amides is 0.4-2.5：1.
5. according to the preparation method of Kynoar in claim 1/polysulfonamides composite nano fiber net, it is characterised in that：
In the step (2), the technological parameter of electrostatic spinning is electrostatic pressure 30kV, and it is 15cm to receive distance, and pushing speed is
0.003mm/s, reception device are Rotation of receiver, and reception revolution is 40r/min, and the spinning time is 120min.
6. according to the preparation method of Kynoar in claim 5/polysulfonamides composite nano fiber net, it is characterised in that：
Electrostatic field environment temperature is more than 30 DEG C, and humidity is less than 20%.
7. according to the preparation method of Kynoar in claim 1/polysulfonamides composite nano fiber net, it is characterised in that：
In the step (1), stir as mechanical agitation, duration 15-25min；Debubbling method for ultrasound defoam, when a length of 50-70min.
8. according to the preparation method of Kynoar in claim 1/polysulfonamides composite nano fiber net, it is characterised in that：
In the step (2), debubbling method for ultrasound defoam, when a length of 25-35min.
A kind of 9. Kynoar/polysulfonamides composite Nano that in 1-8 according to claim prepared by any preparation method
Web.
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| CN109355803A (en) * | 2018-11-30 | 2019-02-19 | 中科院广州化学有限公司 | A kind of preparation method coating polysulfide Electrospun nano-fibers film and its application in the case where aoxidizing stimuli responsive in adsorbing metal ions |
| CN111249926A (en) * | 2020-02-24 | 2020-06-09 | 上海工程技术大学 | Meta-aramid/polysulfonamide nano composite air filter membrane and preparation method thereof |
| CN112501790A (en) * | 2020-11-26 | 2021-03-16 | 华中科技大学 | Polysulfonamide polyacrylonitrile composite nanofiber membrane and preparation method thereof |
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| CN105002590A (en) * | 2015-07-02 | 2015-10-28 | 上海工程技术大学 | Preparation method of natural cellulose/polysulfone amide nanofiber |
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| CN109355803A (en) * | 2018-11-30 | 2019-02-19 | 中科院广州化学有限公司 | A kind of preparation method coating polysulfide Electrospun nano-fibers film and its application in the case where aoxidizing stimuli responsive in adsorbing metal ions |
| CN111249926A (en) * | 2020-02-24 | 2020-06-09 | 上海工程技术大学 | Meta-aramid/polysulfonamide nano composite air filter membrane and preparation method thereof |
| CN112501790A (en) * | 2020-11-26 | 2021-03-16 | 华中科技大学 | Polysulfonamide polyacrylonitrile composite nanofiber membrane and preparation method thereof |
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