CN102704192A - Production device for multi-roll solid-pin electrode nanofiber non-woven fabrics - Google Patents
Production device for multi-roll solid-pin electrode nanofiber non-woven fabrics Download PDFInfo
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- CN102704192A CN102704192A CN2012102091260A CN201210209126A CN102704192A CN 102704192 A CN102704192 A CN 102704192A CN 2012102091260 A CN2012102091260 A CN 2012102091260A CN 201210209126 A CN201210209126 A CN 201210209126A CN 102704192 A CN102704192 A CN 102704192A
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Abstract
The invention discloses a production device for multi-roll solid-pin electrode nanofiber non-woven fabrics. The production device mainly comprises a liquid storage tank, a liquid roller, a solid-pin electrode spinning roller, a receiving device and a high voltage electrostatic generator, wherein the liquid roller 2 is made of polypropylene resin, and is wrapped with fluororubber at the outer side, the breadth of the liquid roller is 20-200cm, and the radius range of the liquid roller is 5-50cm; the breadth of the solid-pin electrode spinning roller 3 is consistent to that of the liquid roller, and the radius of the solid-pin electrode spinning roller is 3-20cm; the needling density of a solid-pin electrode 22 is 1-16 needles/cm2; and the solid-pin electrode is characterized in that the structure of the pin is in one of a fork shape, a cylinder shape, a prism shape, a cone shape, a pyramid shape and the like, the pin length of the solid-pin electrode 22 is 1-4cm, and the distance from the pin tip to the surface of the liquid roller is 0.1-1mm. The production device disclosed by the invention is capable of producing electro-spinning nanofibers with the spinning solution of which the concentration reaches more than 25%, the critical voltage is usually not higher than 25kV, the production efficiency can be more than 20g/min, the range of the diameter of the prepared nanofiber is 50-500nm, and the average diameter is smaller than 400nm.
Description
Technical field
The present invention relates to a kind of electrostatic spinning apparatus, be specially a kind of multiple roll solid needle electrode nano fibre nonwoven production apparatus.
Background technology
Be meant on the nanofiber narrow sense that diameter is less than the following fiber of 100nm; Because its diameter is superfine; Make fiber specific surface area that qualitative leap take place, greatly improved its surface energy, thereby given its special small-size effect, skin effect, quantum size effect, macro quanta tunnel effect etc.; All show excellent specific property in properties such as physics (light, heat, electromagnetism etc.), chemistry, become the research focus of following 21st century.Nano-fiber for production of non-woven is with a wide range of applications at aspects such as environmental protection filtering material, nano combined reinforcing material, tissue engineering bracket, drug release carrier, photoelectric device, catalysis materials.
Electrostatic spinning is one of effective technology for preparing at present nano-fiber for production of non-woven; This technology was at first invented [A.FORMHALS.Process and apparatus for preparing artifical threads:USA in 1934 by American Formhals; 1975504 [P] 1934.]; Its core is that polymer solution or the melt under the effect of high-pressure electrostatic field force produces jetting stream, and the dynamic analysis of spinning of spurting " disturbing phenomenon " will take place in air splits into many finer fiber threads again, constantly attenuated; Solvent evaporates in the while thread (or the cooling of melt thread); The fiber solidified forming is collected device and accepts, and obtains nano-fiber for production of non-woven.Static spins that kind comprises that solution static spins and big type of melting electrostatic spinning two, and wherein solution static spins because its equipment and technology are simple and obtains fast development.
Solution electrostatic spinning machine or device mainly comprise spinning head, spinning solution feed system, high-voltage generator and fiber collecting plate four big major parts.It is spinning head that the conventional electrostatic spinning machine adopts monometallic capillary needle tubing, like Chinese patent 200420020596.3,200410025622.6; 200420107832.5 etc. disclosed technology; U.S. Pat 6753454, US6656394, disclosed technology such as US6713011.
Along with electro-spinning nano fibre nonwoven receives the industrial quarters pay attention to day by day, traditional single needle pipe electrostatic spinning machine can't satisfy the demand of large-scale application because productive rate is lower, has become its bottleneck problem that further develops of restriction.Improve the problem that electro spinning nano fiber output has become expert, scholar's common concern and faced.
On the basis of single needle electrostatic spinning device, many scholars have developed the spininess electrostatic spinning apparatus, and Theron etc. are with the multiple spray head static spinning machine [S.A.THERON of a plurality of metal needle tubings according to arranged in a straight line or arranged; A.L.YARIN, E.ZUSSMAN, E.KROLL.Multiple jets in electrospinning:experiment and modeling.Polymer; 2005,46 (9): 2889-2899.], a lot of similar patents have also appearred in the world; Like WO2005/073441 1, WO 2004/016839 A1, USA6,382,526, USA; 6,616,435B2 etc.Improve although the spininess electrostatic spinning technique has had on output significantly, and can reduce the problems such as phase mutual interference between spininess through the position of reasonable Arrangement pin.But in thousands of syringe needle spinning processes, in case stopping up or the dropping liquid phenomenon appears in certain or a plurality of syringe needle, with the uniformity that has a strong impact on product, quality, and cleaning work is loaded down with trivial details, and influence is produced.
2004, started the beginning of needleless electrostatic spinning technique by the ELMARCO company of Czech in the rotation roll shaft electrostatic spinning technique that produces, and applied for patent (WO2005/024101 A1).This technological cardinal principle is the rotating metallic roll shaft (or being carved with different decorative patterns) that solution is immersed in the mounting portion in liquid storage tank; Spinning solution is along with the roll shaft surface is taken in the rotation of roll shaft to; Be applied with a high-pressure electrostatic in liquid storage tank or on the roll shaft, the spinning solution on electric field force effect lower roller shaft surface forms multiple jets, spreads all over the drum length direction; Thereby can obtain higher output; This equipment yield can reach 1～15g/min, and the about 100～1000nm of fibre diameter is for solid foundation has been established in the realization of goal of nanofiber suitability for industrialized production.Because this spinning spray silk zone is on the roll shaft surface, does not use traditional capillary metal needle tubing, so be referred to as the needleless electrostatic spinning machine.Compare with the pin type electrostatic spinning,, avoided the generation of drop, and had high yield because its fiber jet is directed upwardly.But this needleless roll shaft formula electrospinning device need be higher in spinning process than pin type spinning machine high-pressure electrostatic; Its starting resistor (voltage value when spinning solution forms taylor cone) is usually more than 40kV; Its reason is that the roll shaft surface curvature is bigger, and electric field is not concentrated in its surface distributed, and during the roll shaft rotation; Its surface band liquid measure is more, therefore needs higher voltage to overcome the surface tension of spinning solution and form taylor cone; In addition, the fibre diameter of roll shaft formula needle-less electro-spinning is thick than the pin type electrospinning fibre, generally more than 300nm, have in addition surpass 1 μ m; Moreover too high voltage value can cause puncturing, leaky, and is higher to apparatus insulated requirement, the corresponding increase of spinning energy consumption.But relating to needle-less roll shaft formula electrostatic spinning apparatus patent also has: Chinese patent 200410025622.6,200610036635.2,200710036447.4,200810032247.6 etc.
From the spinning technique angle, increase concentration of dope and also help to improve the output of electrostatic spinning nano fiber to a certain extent, and can reduce the solvent use amount, reduce production costs and environmental pollution.Yet spinning solution solubility is big more, and its viscosity is also big more, and the high concentration spinning solution is extruded difficulty in the capillary needle tubing, will speed up injector head and stops up; Cause difficulty in spinning in needleless roll shaft surface band hypervolia, even can't carry out electrostatic spinning.Up to now, rarely have electrostatic spinning apparatus document and the patent report that is suitable for the high concentration spinning solution.
Summary of the invention
To the deficiency of prior art, technical problem to be solved by this invention is that a kind of multiple roll solid needle electrode nano-fiber for production of non-woven industrial production device is provided.This process units has designed solid needle electrode spray roll dies especially; Solved well and had the problem that spinning voltage is high, fibre diameter is thick in obstruction in capillary needle tubing electricity spinning process, dropping liquid phenomenon and the needleless roll shaft spinning process now, captured the electro spinning nano fiber technological difficulties of high concentration spinning solution.
The technical scheme that the present invention solves said process units technical problem is: design a kind of multiple roll solid needle electrode nano-fiber for production of non-woven industrial production device, this process units mainly comprises: liquid storage tank 1, commentaries on classics liquid roller 2, solid needle electrode spray roll dies 3, receiving system 4, HV generator 5.
The roller with liquid 2 that the present invention designed is characterized in that its material is a kind of in plastics or the rubber rollers.
Solid needle electrode that the present invention designed spray roll dies 3 is characterized in that this spray roll dies is made up of metal shaft 31 and solid needle electrode 32; Said solid needle electrode 32 is characterised in that its aciculiform structure is a kind of in fork-shaped, cylindrical, prismatic, conical, pyramid etc.; Said solid needle electrode 32 closely is connected with metal shaft 31.
Compare with existing electrostatic spinning device; The multiple roll solid needle electrode nano-fiber for production of non-woven industrial production device that the present invention designed is utilize to change liquid roller 2 spinning solution in the liquid storage tank evenly is transferred to its surface; And then be transferred to the needle point appearance that the solid needle electrode sprays the solid needle electrode 32 of roll dies 3, efficiently solve existing capillary pin type static and spin the pin hole clogging; Simultaneously, because spinning solution via the transitional function that changes liquid roller 2, can make the outer watchband liquid measure of the needle point of solid needle electrode 32 even; More outstanding is; Needle point place electric field is the most concentrated in this electric spinning equipment, and electric-field intensity is maximum, helps to form stable taylor cone jet; Greatly drop to spinning voltage, can satisfy the electro spinning nano fiber prepared in batches of high concentration spinning solution.In addition, the also spinning solution of applicable low solubility of this process units.
Description of drawings
Fig. 1 is the overall structure sketch map of the two a kind of embodiment of roller solid needle electrode nanofiber process units of the present invention;
Fig. 2 is the overall structure sketch map of a kind of embodiment of the present invention's three roller solid needle electrode nanofiber process unitss;
Fig. 3 is the structural representation of the solid electrode spray roll dies of a kind of embodiment of solid needle electrode nanofiber process units of the present invention;
Fig. 4 is a fork-shaped solid needle electrode sketch map of the present invention;
Fig. 5 is a cylindrical, massive pin electrode sketch map of the present invention;
Fig. 6 is the conical solid needle electrode of a present invention sketch map;
Fig. 7 is the triangular taper solid needle of a present invention electrode sketch map.
The specific embodiment
Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof, but claim scope of the present invention does not receive the restriction of specific embodiment.
The multiple roll solid needle electrode nano fibre nonwoven production apparatus of the present invention's design (is called for short device; Referring to Fig. 1,2) comprise liquid storage tank 1; Being equipped with on the liquid storage tank 1 changes liquid roller 2; The surface of changeing liquid roller 2 is provided with one or more solid needle electrode spray roll dies 3, directly over the solid needle electrode spray roll dies 3 receiving system 4 is installed; Said solid needle electrode spray roll dies 3 is made up of metal shaft 31 and solid needle electrode 32; Said solid needle electrode spray roll dies 3 is connected with the positive pole 51 of HV generator 5 through metal shaft 31; Said receiving system 4 comprises atresia lace curtaining 41 and ground connection pole plate 42 compositions such as grade, and the negative pole 52 of said HV generator 5 is connected with ground wire with ground connection pole plate 42 in the receiving system 4.
Said liquid storage tank 1 material is for surpassing molecular weight polyethylene resin, and this resin has high intensity and modulus, has both the good electrical insulating properties simultaneously, organic solvent-resistant, strong acid, highly basic and splendid welding processing characteristics; Said liquid storage tank 1 has designed inlet 11 and liquid outlet 12, and electricity spins that spinning solution constantly replenishes from inlet 11 in the process, and is concordant with liquid outlet 12 to guarantee the spinning liquid level, and its effect is to change in liquid roller 2 rotary courses band liquid measure and stablize in order to control.
Said commentaries on classics liquid roller 2 materials are acrylic resin, and the appearance looping has fluorubber.Acrylic resin and fluorubber all have excellent acid alkali, organic solvent-resistant and excellent electric insulating etc.; Said roller with liquid 2 sizes can design, and the fabric width scope is 20～200cm, and preferred 100～150cm, radius are 5～50cm, preferred 20～30cm.
A kind of solid needle electrode spray of the special design of the present invention roll dies 3, said solid electrode spray roll dies 3 is formed (with reference to Fig. 3) by metal shaft 31 and solid needle electrode 32; Said metal shaft can be hollow shaft, also can be solid shafting, preferentially selects hollow shaft, and hollow shaft more helps the high voltage direct current that HV generator 5 takes place to be passed to solid needle electrode 32 and surperficial spinning solution thereof; Metal shaft 31 can be conducting metals such as gold, copper, iron, preferably copper with solid needle electrode 32 materials.
Said solid needle electrode spray roll dies 3 fabric widths are consistent with roller with liquid, and radius (the solid needle needle point leaves apart from distance of shaft centers) scope is 3～20cm, preferred 5～10cm; Described solid needle electrode 22 bestock are 1～16 pin/cm
2, preferred 4～8 pins/cm
2Spray roll dies 3 radiuses are big more, and bestock is high more, and jet formation quantity is many more, and output is high more, but required voltage is also higher relatively.
Said solid needle electrode 32 is characterised in that the aciculiform structure is a kind of (with reference to the Fig. 4,5,6) in fork-shaped, cylindrical, conical, pyramid etc., preferentially selects fork configuration; Said solid needle electrode 32 is characterized in that the long 1～4cm of pin, preferred 2～3cm, and the solid needle needle point is 0.1～1mm with changeing liquid roller surface distance.Needle point is with to change liquid roller surface distance near more, and the entrained spinning liquid measure of solid needle electrode needle point is also many more, and its production efficiency can slightly increase, and same required voltage is also high.
Said receiving system 4 comprises atresia lace curtaining 41 and ground connection pole plate 42 compositions such as grade, and said atresia lace curtaining 41 surfaces are coated with compact metal silver thin layer, and the coating effect is to quicken surface charge loss in the nanofiber; Said ground connection pole plate 42 ground connection.
Said HV generator 5 is known commercially available high-voltage DC power supply, and voltage range is 0～100kV; The metal shaft 31 of the positive pole 51 of said HV generator 5 and solid needle electrode spray roll dies 3 with link to each other negative pole 52 ground connection; Said HV generator effect is to make high-tension electricity on the spinning solution band of solid needle surface, and with ground connection pole plate 42 formation high-voltage electrostatic fields so that spinning solution drawing-off under the high voltage electric field effect is refined into nanofiber.
The basic functional principle of apparatus of the present invention is: spinning solution injects liquid storage tank 1 through inlet 11; The commentaries on classics liquid roller 2 that is installed on the liquid storage tank rotates with 1～30r/min speed under external force drives; Make its fluorubber surface be with a certain amount of spinning solution along with the rotation of changeing liquid roller 2, at this moment, solid needle electrode spray roll dies 3 also rotates according to given pace; Rotary speed is 1～10r/min, and solid needle electrode 32 makes uniform spinning solution on its needle point band with changeing liquid roller 2 surperficial spinning solutions contact the back; Solid needle electrode 32 links to each other with the positive pole 51 of HV generator 5 through metal shaft 31; (15～60kV) are delivered to the drop of solid needle electrode 32 needle surfaces through metal shaft by dc high-voltage that HV generator produced; And and receiving system 4 in ground connection pole plate 42 form high voltage electric fields (distance 10～25cm is adjustable between the two); Like this, solid needle electrode 32 needle surface drops form a large amount of taylor cones under electric field action, and then produce a large amount of fiber jets.Under the effect of high-voltage electrostatic field; After jet has experienced processes such as acceleration, disturbance, division; Constantly attenuate, and cooling or solvent evaporates moulding in air, finally the form with nanofiber is deposited on the receiving system 4; Formation is evenly distributed, average diameter is at 50～500nm, and fabric width is the nano-fiber for production of non-woven of 20～200cm.
Compare with existing spininess pipe electrostatic spinning machine and needleless roll-type electrostatic spinning machine; The specially designed solid needle electrode of the present invention spray roll dies since drop at solid needle electrode 22 needle surfaces; Can be competent at concentration up to 25% above spinning solution electro spinning nano fiber production, and its critical voltage is not higher than 25kV usually, its production efficiency can be more than 20g/min; The nanofiber diameter scope of preparation is 50～500nm, and average diameter is less than 400nm.
The present invention does not address part and is applicable to prior art.
Embodiment 1
A kind of pair of roller solid needle electrode nanofiber process units as shown in Figure 1 comprises liquid storage tank 1, commentaries on classics liquid roller 2, the spray of solid needle electrode roll dies 3, receiving system 4 and HV generator 5 etc.Said commentaries on classics liquid roller 2 fabric widths are 20cm, and radius is 5cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 5cm; Select fork-shaped solid needle electrode as shown in Figure 4; Solid needle electrode 32 pins are long to be 1cm, and the prong width is 0.5mm, and bestock is 6 pins/cm
2, the distance on needle point and roller with liquid 3 fluorubber surface is 0.5mm.During work; Polyvinyl alcohol/water spinning solution with 30% injects liquid storage tank 1 by inlet 11, and excessive spinning solution flows out via outlet 12, changes liquid roller 2 and under external force drives, rotates with the 15r/min velocity of rotation; Solid needle electrode spray roll dies 3 velocities of rotation are 3r/min; Open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted, HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3, the high direct voltage static of output 40kV; Directly over spininess spray roll dies 3, be provided with receiving system 4, the distance of setting between the two is 18cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 40～160nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 80nm of average diameter, productive rate is about 30g/min.This solution system starting resistor is 20kV.
A kind of pair of roller solid needle electrode nanofiber process units as shown in Figure 1 comprises liquid storage tank 1, commentaries on classics liquid roller 2, the spray of solid needle electrode roll dies 3, receiving system 4 and HV generator 5 etc.Said commentaries on classics liquid roller 2 fabric widths are 200cm, and radius is 50cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 20cm, select cylindrical, massive pin electrode as shown in Figure 5, and solid needle electrode 32 pins are long to be 4cm, and bestock is 16 pins/cm
2, needle point is 1mm with the distance of changeing liquid roller 3 fluorubber surface.During work; Polyvinylpyrrolidone with 6%/ethanol spinning solution injects liquid storage tank 1 by inlet 11, and excessive spinning solution flows out via outlet 12, changes liquid roller 2 and under external force drives, rotates with the 30r/min velocity of rotation; Solid needle electrode spray roll dies 3 velocities of rotation are 10r/min; Open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted, HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3, the high direct voltage static of output 15kV; Directly over spininess spray roll dies 3, be provided with the receiving system 4 of ground connection, the distance of setting between the two is 25cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 120～380nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 210nm of average diameter, productive rate is about 180g/min.This solution system starting resistor is 15kV.
A kind of pair of roller solid needle electrode nanofiber process units as shown in Figure 1 comprises liquid storage tank 1, commentaries on classics liquid roller 2, the spray of solid needle electrode roll dies 3, receiving system 4 and HV generator 5 etc.Said commentaries on classics liquid roller 2 fabric widths are 100cm, and radius is 20cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 10cm, select conical solid needle electrode as shown in Figure 6, and solid needle electrode 32 pins are long to be 2cm, and bestock is 16 pins/cm
2, needle point is 0.5mm with the distance of changeing liquid roller 2 fluorubber surface.During work, the polyurethane/N with 25%, the dinethylformamide spinning solution injects liquid storage tank 1 by inlet 11; Excessive spinning solution flows out via outlet 12; Change liquid roller 2 and under external force drives, rotate with the 25r/min velocity of rotation, solid needle electrode spray roll dies 3 velocities of rotation are 5r/min, open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted; HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3; The high direct voltage static of output 30kV is provided with receiving system 4 directly over spininess spray roll dies 3, the distance of setting between the two is 20cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 90～190nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 130nm of average diameter, productive rate is about 90g/min.This solution system starting resistor is 15kV.
Embodiment 4
A kind of three roller solid needle electrode nanofiber process unitss as shown in Figure 2 comprise liquid storage tank 1, commentaries on classics liquid roller 2, the spray of solid needle electrode roll dies 3, receiving system 4 and HV generator 5 etc.Said roller with liquid 2 fabric widths are 80cm, and radius is 10cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 2cm, select triangular taper solid needle electrode as shown in Figure 7, and solid needle electrode 32 pins are long to be 3cm, and bestock is 8 pins/cm
2, the distance on needle point and roller with liquid 2 fluorubber surface is 0.8mm.During work, the PLA with 30%/1,2-dichloroethanes spinning solution injects liquid storage tank 1 by inlet 11; Excessive spinning solution flows out via outlet 12; Change liquid roller 2 and under external force drives, rotate with the 10r/min velocity of rotation, solid needle electrode spray roll dies 3 velocities of rotation are 3r/min, open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted; HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3; The high direct voltage static of output 35kV is provided with receiving system 4 directly over spininess spray roll dies 3, the distance of setting between the two is 15cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 180～380nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 230nm of average diameter, productive rate is about 160g/min.This solution system starting resistor is 20kV.
A kind of three roller solid needle electrode nanofiber process unitss as shown in Figure 2 comprise liquid storage tank 1, commentaries on classics liquid roller 2, the spray of solid needle electrode roll dies 3, receiving system 4 and HV generator 5 etc.Said commentaries on classics liquid roller 2 fabric widths are 40cm, and radius is 20cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 5cm, select triangular taper solid needle electrode as shown in Figure 4, and solid needle electrode 32 pins are long to be 1cm, and bestock is 3 pins/cm
2, needle point is 0.6mm with the distance of changeing liquid roller 2 fluorubber surface.During work, the polyurethane/polyacrylonitrile with 28%/N, the dinethylformamide spinning solution injects liquid storage tank 1 by inlet 11; Excessive spinning solution flows out via outlet 12; Change liquid roller 2 and under external force drives, rotate with the 16r/min velocity of rotation, solid needle electrode spray roll dies 3 velocities of rotation are 8r/min, open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted; HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3; The high direct voltage static of output 35kV is provided with receiving system 4 directly over spininess spray roll dies 3, the distance of setting between the two is 18cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 180～380nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 230nm of average diameter, productive rate is about 250g/min.This solution system starting resistor is 19kV.
Embodiment 6
A kind of three roller solid needle electrode nanofiber process unitss as shown in Figure 2 comprise liquid storage tank 1, change liquid roller 2, solid needle electrode spray roll dies 3, receiving system 4, HV generator 5 and connect etc.Said commentaries on classics liquid roller 2 fabric widths are 120cm, and radius is 10cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 3cm, select the fork-shaped solid needle electrode shown in 3, and solid needle electrode 32 pins are long to be 1cm, and bestock is 1 pin/cm
2, needle point is 0.1mm with the distance of changeing liquid roller 2 fluorubber surface.During work; Aluminium salt sol gel spinning liquid with 50% injects liquid storage tank 1 by inlet 11, and excessive spinning solution flows out via outlet 12, changes liquid roller 2 and under external force drives, rotates with the 1r/min velocity of rotation; Solid needle electrode spray roll dies 3 velocities of rotation are 1r/min; Open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted, HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3, the high direct voltage static of output 45kV; E side at spininess spray roll dies 3 is provided with receiving system 4, and the distance of setting between the two is 23cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 280～480nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 360nm of average diameter, productive rate is about 40g/min.This solution system starting resistor is 25kV.
Embodiment 7
A kind of three roller solid needle electrode nanofiber process unitss as shown in Figure 2 comprise liquid storage tank 1, commentaries on classics liquid roller 2, the spray of solid needle electrode roll dies 3, receiving system 4 and HV generator 5 etc.Said commentaries on classics liquid roller 2 fabric widths are 200cm, and radius is 50cm, and said solid needle electrode spray roll dies 3 radiuses (the solid needle needle point leaves apart from distance of shaft centers) are 3cm, select the fork-shaped solid needle electrode shown in 3, and solid needle electrode 32 pins are long to be 1cm, and bestock is 16 pins/cm
2, needle point is 0.1mm with the distance of changeing liquid roller 2 fluorubber surface.During work; Polyvinylpyrrolidone with 5%/L alcohol spinning solution injects liquid storage tank 1 by inlet 11, and excessive spinning solution flows out via outlet 12, changes liquid roller 2 and under external force drives, rotates with the 15r/min velocity of rotation; Solid needle electrode spray roll dies 3 velocities of rotation are 15r/min; Open HV generator 5 after roll dies 3 slow-roll stabilizations to be painted, HV generator 5 positive electrodes 51 link to each other with the metal shaft 31 of solid needle electrode spray roll dies 3, the high direct voltage static of output 40kV; Directly over spininess spray roll dies 3, be provided with receiving system 4, the distance of setting between the two is 20cm; At this moment, between the ground connection pole plate 42 of spininess spray roll dies 3 and receiving system 4, formed a high-voltage electrostatic field, the spinning solution on solid needle 31 needle points is producing a large amount of jetting streams under electrostatic interaction; Processes such as the acceleration of jet experience, disturbance, division; Constantly attenuate, and in air cooling forming, finally be about 60～120nm with the average diameter that the form of nanofiber is deposited on the nanofiber of being produced on the receiving system 4; The about 90nm of average diameter, productive rate is about 20g/min.This solution system starting resistor is 15kV.
Claims (4)
1. multiple roll solid needle electrode nano fibre nonwoven production apparatus, this process units mainly comprises: liquid storage tank, change liquid roller, solid needle electrode spray roll dies, receiving system, HV generator.
2. be acrylic resin according to the said roller with liquid material of claim 1, the appearance looping has fluorubber, and fabric width is 20～200cm, and radius is 5～50cm.
3. according to the said solid needle electrode spray of claim 1 roll dies, it is characterized in that being made up of metal shaft and solid needle electrode, fabric width and roller with liquid are consistent, and radius is 3～20cm;
Described solid needle electrode bestock is 1～16 pin/cm
2
4. according to claim 1 or 3 said solid needle electrodes, be characterised in that its aciculiform structure is a kind of in fork-shaped, cylindrical, prismatic, conical, pyramid etc.; Said solid needle electrode is characterized in that the long 1～4cm of pin, and needle point and roller with liquid fluorubber surface distance are 0.1～1mm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103060932A (en) * | 2013-01-14 | 2013-04-24 | 暨南大学 | Drum electrostatic spinning device |
| CN104894661A (en) * | 2015-07-06 | 2015-09-09 | 苏州大学 | Electrostatic spinning device |
| CN105200538A (en) * | 2015-08-12 | 2015-12-30 | 昆山同日精密测试设备有限公司 | Rotary electrostatic spinning device for preparing nano fibers |
| CN105624808A (en) * | 2016-04-06 | 2016-06-01 | 佛山轻子精密测控技术有限公司 | Annular flake-shaped electrode electrostatic spinning device |
| CN110373725A (en) * | 2019-06-27 | 2019-10-25 | 南通顶誉纺织机械科技有限公司 | A kind of brush electrostatic spinning apparatus of twolip type and its application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103060932A (en) * | 2013-01-14 | 2013-04-24 | 暨南大学 | Drum electrostatic spinning device |
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| CN105200538B (en) * | 2015-08-12 | 2017-11-28 | 上海同芮投资管理有限公司 | A kind of rotational electrostatic device for spinning for preparing nanofiber |
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| CN105624808B (en) * | 2016-04-06 | 2017-09-12 | 佛山轻子精密测控技术有限公司 | A kind of annular flake shape electrode electrostatic spinning apparatus |
| CN110373725A (en) * | 2019-06-27 | 2019-10-25 | 南通顶誉纺织机械科技有限公司 | A kind of brush electrostatic spinning apparatus of twolip type and its application method |
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Application publication date: 20121003 |