CN108914222A - A kind of electrospinning process of the double water-spraying fabrics of free surface - Google Patents
A kind of electrospinning process of the double water-spraying fabrics of free surface Download PDFInfo
- Publication number
- CN108914222A CN108914222A CN201811030363.4A CN201811030363A CN108914222A CN 108914222 A CN108914222 A CN 108914222A CN 201811030363 A CN201811030363 A CN 201811030363A CN 108914222 A CN108914222 A CN 108914222A
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- China
- Prior art keywords
- free surface
- double water
- spray head
- surface spray
- electrospinning process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
-
- 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
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- 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
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The present invention provides a kind of electrospinning process of the double water-spraying fabrics of free surface, and two free surface spray heads are linearly arranged in the lower section of reception device first；Then the critical voltage value of two free surface spray heads is calculated by electric field simulation；To critical voltage described in two free surface spray head independent loads, so that the free surface of two free surface spray heads is inspired more jet streams completely, attenuating is drawn and attenuated into nanofiber, is finally received the reception of device base fabric.According to the nanofiber web area being collected into reception device base fabric, the yield of nanofiber in the unit of account time.Method provided by the invention overcomes the deficiencies in the prior art, carries out electrostatic spinning using double water-spraying fabrics, substantially increases production efficiency, while wire vent is in stable condition, spinning effect is good, can be used for mass electrostatic spinning.
Description
Technical field
The present invention relates to electrostatic spinning technique fields, more particularly to a kind of electrostatic spinning of the double water-spraying fabrics of free surface
Method.
Background technique
Electrostatic spinning is exactly the special shape of polymeric fluid electrostatic atomization, and the substance that atomization is divided out at this time is not small
Drop, but the small jet stream of polymer, can run quite long distance, finally be solidified into fiber.Electrostatic spinning is a kind of spy
Different fiber fabrication process, polymer solution or melt carry out jet spinning in strong electrical field.Under electric field action, at syringe needle
Drop can be become conical (i.e. " taylor cone ") from spherical shape, and extend to obtain fiber filaments from conical tip.This mode can be with
Produce the polymer filaments of nanometer grade diameter.
Application No. is 201310032194.9 Chinese invention patents to disclose a kind of umbrella electrostatic spinning nozzle and electrostatic
Device for spinning belongs to a kind of needle-free free surface electrostatic spinning apparatus, realizes the batch of Electrospun nano-fibers film
Metaplasia produces.
However the yield of single spray head is extremely limited, it is therefore desirable to this kind of spray head is combined arrangement, really to meet
Industrialization demand, significantly improves production efficiency.But the electric field at spray head edge interferes with each other meeting so that electric field perturbations, Filamentous out
State is unstable, and spinning effect is poor.
Summary of the invention
The technical problem to be solved by the present invention is to：The efficiency of electrostatic spinning how is improved, while guaranteeing the steady of wire vent state
It is qualitative, improve spinning effect.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of the quiet of the double water-spraying fabrics of free surface
Electrical spinning method, which is characterized in that include the following steps：
Step 1：Two free surface spray heads are linearly arranged in the lower section of reception device；
Step 2：The critical voltage value of two free surface spray heads is calculated by electric field simulation；
Step 3：To critical voltage described in two free surface spray head independent loads so that two free surface spray heads from
It is inspired more jet streams completely by liquid level, attenuating draws and attenuates into nanofiber, is finally received the reception of device base fabric.
Preferably, in the step 1, the line of two free surface spray head centers is parallel with reception device.
Preferably, in the step 1, the diameter of two free surface spray heads is 25-50mm.
Preferably, in the step 1, the spacing of two free surface spray heads is 30-100mm；The spacing refers to two
Minimum distance between free surface spray head edge.
Preferably, in the step 2, using Finite Element Simulation Software to the double spray heads of free surface under different spray head spacing
Arrangement carries out electric field simulation, acquires critical voltage value.
Preferably, in the step 3, the reception device base fabric speed of service is set as 2m/min.
It preferably, further include step 4：According to the nanofiber web area being collected into reception device base fabric, unit of account
The yield of nanofiber in time.
Method provided by the invention overcomes the deficiencies in the prior art, carries out electrostatic spinning using double water-spraying fabrics, significantly
Production efficiency is improved, while wire vent is in stable condition, spinning effect is good, can be used for mass electrostatic spinning.
Detailed description of the invention
Fig. 1 is the double water-spraying fabric main views of free surface；
Fig. 2 is the double water-spraying fabric top views of free surface；
Fig. 3 is the double water-spraying fabrics of free surface and receiving device side view；
Fig. 4 is that (when spray head spacing is respectively 30,40,50mm, spray head is electric nearby for the double spray head electric field simulation figures of free surface
The distribution situation of field, the depth of color indicate the height of electric field strength)；
Fig. 5 is that the yield under different reception distances, under the double spray head critical voltages of free surface is sprayed with two free surfaces
The relational graph of head spacing；Wherein, solid line a, b, c indicates critical voltage and spray when receiving distance respectively 100,150,200mm
The relationship of silk head spacing；Dotted line a, b, c expression are when receiving distance respectively 100,150,200mm, yield and spray head spacing
Relationship；
Description of symbols：
1-the first free surface spray head；2-the second free surface spray head；3-reception devices.
Specific embodiment
Present invention will be further explained below with reference to specific examples.
A kind of electrospinning process of the double water-spraying fabrics of free surface, includes the following steps；
Step 1：In conjunction with FIG. 1 to FIG. 3, by two free surface spray heads, i.e. the first free surface spray head 1 and the second free liquid
Face spray head 2 is placed in the lower section of reception device 3.
The double water-spraying fabrics of free surface are only linear arrangement, but in order to preferably observe fibre web, two free liquid are arranged
The line of face spray head center is parallel with reception device 3.
When free surface pair spray head spinning, within the scope of certain distance, since its mutual electrostatic field makes electricity
Field is interfered.And there are certain interactive relation, the present embodiment for the diameter of free surface spray head spacing and free surface spray head
In, setting free surface jet diameters are 25mm, and two free surface spray head spacing are 30-75mm.The free surface spray head
Spacing refers to the minimum distance between two free surface spray head edges.
Spray head top free surface is apart from reception device 100mm, 150mm, 200mm.
The 3 base fabric speed of service of reception device is set as 2m/min.
Step 2：It (can be with the minimum voltage of wire vent by the critical voltage value that electric field simulation calculates two free surface spray heads
Value).
Electric field simulation is carried out to the double water-spraying fabrics of free surface under different spray head spacing using Finite Element Simulation Software, is asked
Obtain critical voltage value.
Analog parameter is as follows：Free surface spray head be it is cylindric, bottom cylindrical face diameter is 25mm, cylindrical body high 50mm, two
Spacing between a free surface spray head is 30~75mm, and two free surface spray head materials are brass.Emulation voltage is 50kV,
Region calculated is the cube that a side length is 200mm.
Fig. 4 is the double spray head electric field simulation figures of free surface.By electric field simulation result it is found that by the double spray head electric fields of free surface
It interferes with each other, free surface spray head top electric field strength becomes smaller, and critical voltage needed for the double spray head spinning of free surface is than free liquid
Wanting for face single nozzle is high.Free surface spray head spacing is gradually increased since 30mm, and critical voltage needed for spinning is with two freedom
Liquid level spray head spacing increases and reduces, and when two free surface spray head spacing are 50-75mm, critical voltage needed for spinning reduces
Speed substantially slow down, influence of the closer free surface spray head spacing bring electric jamming to critical voltage at this time disappears substantially
It loses.
Step 3：Critical voltage described in 2 independent loads of first free surface spray head 1 and the second free surface spray head, so that two
The free surface of a free surface spray head is inspired more jet streams completely, and attenuating, which draws and attenuates, is received 3 base of device at nanofiber
Cloth receives；
Step 4：According to the nanofiber web area being collected into 3 base fabric of reception device, in the unit of account time two from
By the yield (web area) of liquid level spray head.
Fig. 5 is the relational graph of the yield and two free surface spray head spacing under the double spray head critical voltages of free surface.By
Volume analysis result is it is found that free surface spray head spacing is gradually increased since 30mm, as the double spray head spacing of free surface increase
Greatly, electric field interferes with each other decrease on the inside of the double spray heads of free surface, for each free surface spray head, free surface spray head top
The weakening that electric field is subject to reduces, and electric field is opposite to be enhanced, so taylor cone and the jet stream number to gush out increase relatively, yield increases.
When the spacing between two free surface spray heads is 50-75mm, the speed that yield increases substantially slows down, at this time closer freedom
Influence of the liquid level spray head spacing bring electric jamming to yield disappears substantially.
Although it should be understood that herein may usage amount term " first ", " second " etc. each unit is described,
But these units should not be limited by these terms.The use of these items is only for by a unit and another unit
It distinguishes.For example, without departing substantially from the range of exemplary embodiment, it is single that first unit can be referred to as second
Member, and similarly second unit can be referred to as first unit.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the method for the present invention, can also be made for those skilled in the art
Several improvement and supplement, these are improved and supplement also should be regarded as protection scope of the present invention.All those skilled in the art,
Without departing from the spirit and scope of the present invention, when made using disclosed above technology contents it is a little more
Dynamic, modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals pair according to the present invention
The variation, modification and evolution of any equivalent variations made by above-described embodiment, still fall within the range of technical solution of the present invention
It is interior.
Claims (7)
1. a kind of electrospinning process of the double water-spraying fabrics of free surface, which is characterized in that include the following steps：
Step 1：Two free surface spray heads are linearly arranged in the lower section of reception device；
Step 2：The critical voltage value of two free surface spray heads is calculated by electric field simulation；
Step 3：To critical voltage described in two free surface spray head independent loads, so that the free liquid of two free surface spray heads
Face is inspired more jet streams completely, and attenuating draws and attenuates into nanofiber, is finally received the reception of device base fabric.
2. a kind of electrospinning process of the double water-spraying fabrics of free surface as described in claim 1, it is characterised in that：The step
In rapid 1, the line of two free surface spray head centers is parallel with reception device.
3. a kind of electrospinning process of the double water-spraying fabrics of free surface as described in claim 1, it is characterised in that：The step
In rapid 1, the diameter of two free surface spray heads is 25-50mm.
4. a kind of electrospinning process of the double water-spraying fabrics of free surface as described in claim 1, it is characterised in that：The step
In rapid 1, the spacing of two free surface spray heads is 30-100mm；The spacing refers between two free surface spray head edges
Minimum distance.
5. a kind of electrospinning process of the double water-spraying fabrics of free surface as described in claim 1, it is characterised in that：The step
In rapid 2, electric field simulation is carried out to the double water-spraying fabrics of free surface under different spray head spacing using Finite Element Simulation Software, is acquired
Critical voltage value.
6. a kind of electrospinning process of the double water-spraying fabrics of free surface as described in claim 1, it is characterised in that：The step
In rapid 3, the reception device base fabric speed of service is set as 2m/min.
7. a kind of electrospinning process of the double water-spraying fabrics of free surface as described in claim 1, it is characterised in that：Further include
Step 4：According to the nanofiber web area being collected into reception device base fabric, the yield of nanofiber in the unit of account time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030363.4A CN108914222A (en) | 2018-09-05 | 2018-09-05 | A kind of electrospinning process of the double water-spraying fabrics of free surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030363.4A CN108914222A (en) | 2018-09-05 | 2018-09-05 | A kind of electrospinning process of the double water-spraying fabrics of free surface |
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| CN108914222A true CN108914222A (en) | 2018-11-30 |
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|---|---|---|---|
| CN201811030363.4A Pending CN108914222A (en) | 2018-09-05 | 2018-09-05 | A kind of electrospinning process of the double water-spraying fabrics of free surface |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210352A (en) * | 2007-12-21 | 2008-07-02 | 东华大学 | Taylor awl multiple spray head static spinning machine |
| CN103088443A (en) * | 2013-01-28 | 2013-05-08 | 东华大学 | Umbrella-shaped electrostatic spinning sprayer and electrostatic spinning method |
| CN105862146A (en) * | 2015-12-31 | 2016-08-17 | 广东工业大学 | Composite electrospinning device for manufacturing three-dimensional micro-nano conductive tissue engineering scaffold |
| CN207672160U (en) * | 2017-12-27 | 2018-07-31 | 厦门大学 | A kind of high efficiency filter nanofiber membrane preparation device |
-
2018
- 2018-09-05 CN CN201811030363.4A patent/CN108914222A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210352A (en) * | 2007-12-21 | 2008-07-02 | 东华大学 | Taylor awl multiple spray head static spinning machine |
| CN103088443A (en) * | 2013-01-28 | 2013-05-08 | 东华大学 | Umbrella-shaped electrostatic spinning sprayer and electrostatic spinning method |
| CN105862146A (en) * | 2015-12-31 | 2016-08-17 | 广东工业大学 | Composite electrospinning device for manufacturing three-dimensional micro-nano conductive tissue engineering scaffold |
| CN207672160U (en) * | 2017-12-27 | 2018-07-31 | 厦门大学 | A kind of high efficiency filter nanofiber membrane preparation device |
Non-Patent Citations (1)
| Title |
|---|
| 杨恩龙: "多喷头静电纺丝探索", 《中国博士学位论文全文数据库电子期刊工程科技Ⅰ辑》 * |
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Application publication date: 20181130 |
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