CN103726110A - Electrostatic spinning device and method for manufacturing electrostatic spun yarns through electrostatic spinning device - Google Patents

Electrostatic spinning device and method for manufacturing electrostatic spun yarns through electrostatic spinning device Download PDF

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CN103726110A
CN103726110A CN201310675931.7A CN201310675931A CN103726110A CN 103726110 A CN103726110 A CN 103726110A CN 201310675931 A CN201310675931 A CN 201310675931A CN 103726110 A CN103726110 A CN 103726110A
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solution
feeding system
jet device
metal
metal jet
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CN103726110B (en
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邱业君
李明录
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Shenzhen Graduate School Harbin Institute of Technology
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Shenzhen Graduate School Harbin Institute of Technology
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Abstract

The invention provides an electrostatic spinning device high in yield. The electrostatic spinning device mainly comprises a metal jetting device (1), a solution feeding system (2) and an arc receiving system (3). The electrostatic spinning device is characterized by comprising the solution feeding system (2) capable of feeding a solution at any position of the metal jetting device (1). The electrostatic spinning device can be used for spinning multiple kinds of organic matters or organic-inorganic compounds, the spinning efficiency is quite high, the capacity is more than three magnitude orders higher than that of a single-nozzle spinning device, and the spinning efficiency of the electrostatic spinning device is the highest among that of similar devices at present.

Description

A kind of electrospinning device and for the preparation of the method for electrostatic spinning
Technical field
The invention belongs to material Preparation equipment field, particularly a kind of electrospinning device, with and for the preparation of electrostatic spinning, adopt the method without shower nozzle spining technology, multi-angle solution are supplied with and arc receives.
Background technology
Method of electrostatic spinning have technique simple, prepare the remarkable advantages such as quick, with low cost, environmental friendliness, be considered to one of technology of the most promising current suitability for industrialized production nano material.The basic principle of electrostatic spinning is: Polymer Solution or melt are placed in to high-voltage electrostatic field, make it be with high-pressure electrostatic, charged solution forms Taybr cone under electric field force and capillary effect on drop summit, when being greater than the surface tension of solution, electric field force just forms injection thread, thread is through solvent evaporation or melt cooling and solidify, thereby obtains fiber.
The basic device of conventional electrostatic spinning mainly comprises four parts such as high voltage source, solution storing and supplying device, injection apparatus, gathering-device.(1), high voltage source: provide spinning required high-voltage electrostatic field, allow the enough electrostatic charges of spun solution band epipodium, make the most advanced and sophisticated place of drop taylor cone produce jet.(2), solution storing and supplying device: device for storing liquid generally adopts syringe, draws a metal electrode and is connected with high voltage source.While adopting syringe to do solution storage device, power end can be clipped in to single nozzle position of syringe.(3), injection apparatus: the capillary or the syringe single spraying head that are generally internal diameter 0.5-2mm.(4), gathering-device: generally can use metallic plate, graphite paper, conveyer belt, cylinder or grid etc.
Along with the development of electrostatic spinning technique, and improving constantly electrospinning fibre demand.Novel spinning process and device are constantly gushed out.Electrostatic spinning technique is from an initial single spraying electrostatic spinning apparatus to multiple injector electrostatic spinning device, the most backward development and transformation without many jet flow static electricities of shower nozzle spinning technique.Single spraying head unit is complicated owing to installing, shower nozzle limited amount, and shower nozzle is easily stifled, thereby is unfavorable for industrial scale production.Though many shower nozzles static can effectively improve spinning efficiency, has electric field influence between shower nozzle, the clean difficulty of device, between shower nozzle, necessary space causes the floor space of device large, still contradicts with industrialization Production requirement.Therefore, for electrostatic spinning technique is applied to suitability for industrialized production, research and development design the shifting without shower nozzle technique device to high yield gradually of electrospinning device.At present without shower nozzle technical field, there are a lot of different electrospinning devices, included tens kinds of spinning process such as column type, centrifugal, porous type, fence type.But all without shower nozzle spinning equipment in, comprise the nanometer spider of Czech Ai Ermake company, and the electrostatic spinning nano fibre equipment that provides of prior art CN103215660A, what adopt is all common liquid bath bottom feed flow, conveyor type is picked, injector head just sprays to a single direction, and roller bearing is not fully utilized.
So, in order further to enhance productivity, guaranteeing to produce the quality of electrostatic spinning, need further research and develop.
Summary of the invention
In view of the technical problem that prior art exists, by a large amount of experimental studies have found that, be achieved through the following technical solutions the technical problem that the present invention solves:
A kind of electrospinning device, comprise: metal jet device 1, solution feeding system 2, arc receiving system 3, metal jet device 1 one end is connected with positive source, the other end is connected with variable-speed motor 13, it is characterized in that, comprising can be at the solution feeding system 2 of metal jet device 1 optional position feed flow.
Described metal jet device 1 is metal roller bearing or metal roller, contacts for local curved surface with solution feeding system 2, and metal jet device 1 spray angle can be accomplished arbitrarily angled in 345 °.
The feed flow port of described solution feeding system 2 is arc, can contact feed flow with roller bearing in each curved surface position of injection apparatus 1.
The reservoir part of described solution feeding system 2 can arrange volume size according to actual needs, and in reservoir, slip plate 2C slides up and down and controls the pressure of feed flow port and the size of liquid supply rate.
Described solution feeding system 2 contacts with metal jet device 1, the top edge 2A of solution feeding system is to be the curved surface with curvature with metal jet device 1, and the gap between metal jet device 1 is adjustable, lower limb 2B is to be the curved surface with curvature with metal jet device 1, and with metal roller bearing close contact.
Gap between top edge 2A and the metal jet device 1 of solution feeding system is preferably in 5mm.
The continuous receiving system 3 of wide-angle arc dynamically receives for arc, adopt similar conveyer belt form running, receiving angle is arbitrarily angled in 345 °, and arc radius regulates according to receiving range metal roller bearing diameter, and arc substrate outside is equipped with same curvature curved metal soft board line shell 5 and is connect power cathode.
More specifically, in the preferred embodiments of the invention, a kind of electrospinning device, comprising: metal jet device 1, and one end is that terminals 4 are connected with positive source, the other end is connected with variable-speed motor 13 with insulating bar 12 by shaft coupling 11;
Solution feeding system 2, the port of feed flow is that curved surface the metal roller bearing identical with roller bearing curvature contacts;
Arc receiving system 3 bracing or strutting arrangements guarantee that fiber receives cloth 6 along receiving system 3 transmissions, and arc receiving angle is arbitrarily angled in 345 °; Line shell 5 is connected with power cathode; Driving shaft 7, is connected with variable-speed motor by shaft coupling, controls the transmission speed of whole arc fiber reception cloth; Driven shaft 8, receives the rollback of cloth and provides for fiber;
The support 9 of whole equipment, sprays roller bearing 1, solution feeding system 2, arc receiving system 3 for support metal.
In a preferred embodiment of the present invention, the reservoir of feed system 2 contains slip plate 2C, and slip plate 2C slides up and down and controls the pressure of feed flow port and the size of liquid supply rate.
In a preferred embodiment of the present invention, upper contact plate edge 2A, is arc, and adjustable with the gap of roller bearing, prevents that contact plate is suspended to the solution in metal shaft; Lower contact plate edge 2B, is arc, with metal roller bearing close contact, prevents solution feeding system leakage, has improved the tightness degree of contact and the uniformity of feed flow.
Particularly go up contact plate edge 2A, and metal roller bearing 1 there is identical curved surface segmental arc adjustable with the gap, gap of metal roller bearing 4.Lower contact plate edge 2B, and metal roller bearing 1 have identical curved surface segmental arc and with metal roller bearing 4 close contacts, the gained electrostatic spinning uniformity is high.
Material of the present invention and electrode connection mode preferable alloy injection apparatus 1, can adopt cast iron process Hou Du Chrome, or stainless steel processing.Solution feeding system 2, adopts nonmetallic materials to make, and arc bracing or strutting arrangement 3 adopts nonmetallic materials to make, and the positive terminal 4 of metal jet device 1 adopts overlapping mode with positive source, and negative pole wiring shell 5 joins by binding post and power cathode.
The present invention is by combining the fiber receiving system of the solution feedway without nozzle electrospinning method and multi-angle and wide-angle, and producing can be higher than nanometer spider efficiency, the electrospinning device of the making polymer nanofibre film that output is larger.
Electrospinning device provided by the invention comprises the steps: for the preparation of the method for polymer electrospun
(1), positive and negative polar curve is connected on respectively on metal jet device and receiving system shell to actuating motor drive metal jet device and arc receiving system (3) normal operation; (2), the spinning solution configuring is joined in solution feeding system (2), the plate height in regulator solution feed system (2) reservoir is controlled liquid supply speed; (3) open high voltage source, strengthen gradually voltage in the solution of cylinder surface with abundant electric charge, the electric field force that drop is subject to is greater than surface tension, till drop is elongated and forms after taylor cone continuously a large amount of spinning.
The electrospinning device providing of the present invention can be for comprising PVA, PVP, PVA-PVP, the preparation of the polymer electrospuns such as PEO, also comprise gas chromatography or organic-inorganic composition that other prepare electrostatic spinning, preparation process adopts the configuration of distilled water equal solvent to be applicable to the solution of concentration, solution quality volume ratio (w/v) concentration preferably 6%-15%, add if desired a certain amount of NaCl solution, prepare nano fibrous membrane.
Described mass volume ratio (w/v) is quality g and the ratio of volume mL.
Compared to existing technology, the invention has the advantages that:
1, electrospinning device provided by the invention adopts shower nozzle technology, easily stifled without having solved traditional band shower nozzle equipment shower nozzle, be unfavorable for industrialization production, between shower nozzle, there is electric field influence, the clean difficulty of device, between shower nozzle, necessary space causes the large problem of floor space of device.
2, prior art novel without in shower nozzle spinning equipment, what major part adopted is all common liquid bath bottom feed flow, conveyor type is picked, injector head just sprays to a single direction, roller bearing is not fully utilized, electrospinning device provided by the invention makes full use of roller bearing, improves service efficiency.
3, electrospinning device provided by the invention has improved the efficiency of electrostatic spinning greatly, and the uniformity of tunica fibrosa thickness, and under equal conditions, the output of electrostatic spinning is the more than 2000 times of single spraying head.
4, by electrospinning device provided by the invention, carry out electrostatic spinning preparation, simple to operate, reduced clean, maintenance cost, high efficiency, products obtained therefrom even thickness, is easy to industrial scale application.
Accompanying drawing explanation
Fig. 1 is the right schematic diagram of electrospinning device structure of the present invention.
Fig. 2 is the rear schematic diagram of electrospinning device structure of the present invention.
Fig. 3 A is the solution feeding system figure that slip plate does not insert state; Fig. 3 B is the solution feeding system figure that slip plate inserts state.
Fig. 4 A is the partial enlarged drawing of solution feeding system; Fig. 4 B is the partial enlarged drawing of roller bearing contact-making surface in solution feeding system.
Fig. 5 is that the PVA nano fibrous membrane that present device obtains is schemed at surface sweeping electron microscope SEM.
Fig. 6 is that the PVP nano fibrous membrane that present device obtains is schemed at surface sweeping electron microscope SEM.
Fig. 7 is that the PVA-PVP nano fibrous membrane that present device obtains is schemed at surface sweeping electron microscope SEM.
Fig. 8 is that the PEO nano fibrous membrane that present device obtains is schemed at surface sweeping electron microscope SEM.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
Embodiment 1
Shown in Fig. 1 and Fig. 2, the electrospinning device of high yield of the present invention comprises:
Metal jet device 1 is roller bearing, and one end is that terminals 4 are connected with positive source, and the other end is connected with variable-speed motor 13 with insulating bar 12 by shaft coupling 11;
Solution feeding system 2, the port of feed flow is that curved surface the metal roller bearing identical with roller bearing curvature contacts;
Arc receiving system 3 bracing or strutting arrangements guarantee that fiber receives cloth 6 along receiving system 3 transmissions, and arc receiving angle is 345 °; Line shell 5 is connected with power cathode; Driving shaft 7, is connected with variable-speed motor by shaft coupling, controls the transmission speed of whole arc fiber reception cloth; Driven shaft 8, receives the rollback of cloth and provides for fiber;
The support 9 of whole equipment, sprays roller bearing 1, solution feeding system 2, arc receiving system 3 for support metal.
Embodiment 2
Shown in Fig. 1, Fig. 2, Fig. 3 A and Fig. 3 B, the electrospinning device of high yield of the present invention comprises:
Metal jet device 1 is roller bearing, and one end is that terminals 4 are connected with positive source, and the other end is connected with variable-speed motor 13 with insulating bar 12 by shaft coupling 11;
Solution feeding system 2, the port of feed flow is that curved surface the metal roller bearing identical with roller bearing curvature contacts, and solution feeding system 2 has slip plate 2C, and slip plate 2C slides up and down and controls the pressure of feed flow port and the size of liquid supply rate;
Arc receiving system 3 bracing or strutting arrangements guarantee that fiber receives cloth 6 along receiving system 3 transmissions, and arc receiving angle is 300 °; Line shell 5 is connected with power cathode; Driving shaft 7, is connected with variable-speed motor by shaft coupling, controls the transmission speed of whole arc fiber reception cloth; Driven shaft 8, receives the rollback of cloth and provides for fiber;
The support 9 of whole equipment, sprays roller bearing 1, solution feeding system 2, arc receiving system 3 for support metal.
Embodiment 3
Shown in Fig. 1, Fig. 2, Fig. 3 A, Fig. 3 B, Fig. 4 A and Fig. 4 B, the electrospinning device of high yield of the present invention comprises:
Metal jet device 1 is roller bearing, and one end is that terminals 4 are connected with positive source, and the other end is connected with variable-speed motor 13 with insulating bar 12 by shaft coupling 11;
Solution feeding system 2, the port of feed flow is that curved surface the metal roller bearing identical with roller bearing curvature contacts, solution feeding system 2 has slip plate 2C, slip plate 2C slides up and down and controls the pressure of feed flow port and the size of liquid supply rate, upper contact plate edge 2A, have identical curved surface segmental arc adjustable with the gap of metal roller bearing 4 with metal jet device 1, lower contact plate edge 2B, and metal jet device 1 have identical curved surface segmental arc and with metal roller bearing 4 close contacts;
Arc receiving system 3 bracing or strutting arrangements guarantee that fiber receives cloth 6 along receiving system 3 transmissions, and arc receiving angle is 345 °; Line shell 5 is connected with power cathode; Driving shaft 7, is connected with variable-speed motor by shaft coupling, controls the transmission speed of whole arc fiber reception cloth; Driven shaft 8, receives the rollback of cloth and provides for fiber;
The support 9 of whole equipment, sprays roller bearing 1, solution feeding system 2, arc receiving system 3 for support metal.
Embodiment 4
The distilled water solution that preparation mass volume ratio concentration is 10%PVA, adopts the electrospinning device of the embodiment of the present invention 3 to prepare electrostatic spinning, has obtained nano fibrous membrane, the shape appearance figure 5 of tunica fibrosa under SEM characterizes.
Concrete grammar: (1), positive and negative polar curve is connected on respectively and is sprayed on roller bearing 1 and line shell 5, actuating motor drives metal roller bearing injector head and arc transmission gathering-device to run well, and rotating speed regulates according to the situation of solution concentration; (2), the spinning solution configuring is joined in solution feeding system 2, regulate plate height in reservoir to control the size of liquid supply speed and liquid supply rate; (3) open high voltage source, strengthen gradually voltage in the solution of cylinder surface with abundant electric charge, the electric field force that drop is subject to is greater than surface tension, till drop is elongated and forms after taylor cone continuously a large amount of spinning.
Embodiment 5
The distilled water solution that preparation mass volume ratio concentration is 15%PVP, adopts the electrospinning device of the embodiment of the present invention 3 to prepare electrostatic spinning, has obtained nano fibrous membrane, Fig. 6 of the pattern of tunica fibrosa under SEM characterizes.
Concrete grammar: (1), positive and negative polar curve is connected on respectively and is sprayed on roller bearing 1 and line shell 5, actuating motor drives metal roller bearing injector head and arc transmission gathering-device to run well, and rotating speed regulates according to the situation of solution concentration; (2), the spinning solution configuring is joined in solution feeding system 2, regulate plate height in reservoir to control the size of liquid supply speed and liquid supply rate; (3) open high voltage source, strengthen gradually voltage in the solution of cylinder surface with abundant electric charge, the electric field force that drop is subject to is greater than surface tension, till drop is elongated and forms after taylor cone continuously a large amount of spinning.
Embodiment 6
Join the distilled water solution of the PVA-PVP (6:4) that middle mass volume ratio concentration is 10%, adopt the electrospinning device of the embodiment of the present invention 3 to prepare electrostatic spinning, obtained nano fibrous membrane, Fig. 7 of the pattern of tunica fibrosa under SEM characterizes.
Concrete grammar: (1), positive and negative polar curve is connected on respectively and is sprayed on roller bearing 1 and line shell 5, actuating motor drives metal roller bearing injector head and arc transmission gathering-device to run well, and rotating speed regulates according to the situation of solution concentration; (2), the spinning solution configuring is joined in solution feeding system 2, regulate plate height in reservoir to control the size of liquid supply speed and liquid supply rate; (3) open high voltage source, strengthen gradually voltage in the solution of cylinder surface with abundant electric charge, the electric field force that drop is subject to is greater than surface tension, till drop is elongated and forms after taylor cone continuously a large amount of spinning.
Embodiment 7
Prepare the distilled water solution that mass volume ratio concentration is 6%PEO, add the NaCl of mass volume ratio concentration 0.2%, the electrospinning device of the employing embodiment of the present invention 3 is prepared electrostatic spinning and has been obtained nano fibrous membrane, the shape appearance figure 8 of tunica fibrosa under SEM characterizes.
Concrete grammar: (1), positive and negative polar curve is connected on respectively and is sprayed on roller bearing 1 and line shell 5, actuating motor drives metal roller bearing injector head and arc transmission gathering-device to run well, and rotating speed regulates according to the situation of solution concentration; (2), the spinning solution configuring is joined in solution feeding system 2, regulate plate height in reservoir to control the size of liquid supply speed and liquid supply rate; (3) open high voltage source, strengthen gradually voltage in the solution of cylinder surface with abundant electric charge, the electric field force that drop is subject to is greater than surface tension, till drop is elongated and forms after taylor cone continuously a large amount of spinning.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims (10)

1. an electrospinning device, comprise: metal jet device (1), solution feeding system (2), arc receiving system (3), metal jet device (1) one end is connected with positive source, the other end is connected with variable-speed motor (13), it is characterized in that, comprising can be at the solution feeding system (2) of metal jet device (1) optional position feed flow.
2. a kind of electrospinning device according to claim 1, it is characterized in that, described metal jet device (1) is metal roller bearing or metal roller, contact for local curved surface with solution feeding system (2), metal jet device (1) spray angle can be accomplished arbitrarily angled in 345 °.
3. a kind of electrospinning device according to claim 1, is characterized in that, the feed flow port of described solution feeding system is arc, can contact feed flow with roller bearing in each curved surface position of injection apparatus (1).
4. a kind of electrospinning device according to claim 1, it is characterized in that, the reservoir of described solution feeding system (2) contains slip plate (2C), and slip plate (2C) slides up and down the size of controlling liquid supply rate.
5. a kind of electrospinning device according to claim 1, it is characterized in that, described solution feeding system (2) contacts with metal jet device (1), the top edge (2A) of solution feeding system is to be the curved surface with curvature with metal jet device (1), and the gap between metal jet device (1) is adjustable, lower limb (2B) be with metal jet device (1) for the curved surface of curvature, and with metal roller bearing close contact.
6. a kind of electrospinning device according to claim 5, is characterized in that, the gap between top edge (2A) and the metal jet device (1) of solution feeding system is in 5mm.
7. a kind of electrospinning device according to claim 1, it is characterized in that, comprise: metal jet device (1), one end is that terminals (4) are connected with positive source, and the other end is connected with variable-speed motor 13 with insulating bar (12) by shaft coupling (11);
Solution feeding system (2), the port of feed flow is that curved surface the metal roller bearing identical with roller bearing curvature contacts;
Arc receiving system (3) bracing or strutting arrangement guarantees that fiber receives cloth (6) along receiving system (3) transmission, and arc receiving angle is arbitrarily angled in 345 °, adjustable in receiving range certain limit; Line shell 5 is connected with power cathode; Driving shaft (7), is connected with variable-speed motor by shaft coupling, controls the transmission speed of whole arc fiber reception cloth; Driven shaft (8), receives the rollback of cloth and provides for fiber;
The support (9) of whole equipment, for support metal injection apparatus (1), solution feeding system (2), arc receiving system (3).
8. a preparation method for electrostatic spinning, is characterized in that, right to use requires described in 1-7 arbitrary claims a kind of electrospinning device to adopt and is prepared as follows step:
(1), positive and negative polar curve is connected on respectively on metal jet device and receiving system line shell to actuating motor drive metal jet device and arc receiving system (3) normal operation; (2), the spinning solution configuring is joined in solution feeding system (2), the plate height in regulator solution feed system (2) reservoir is controlled liquid supply speed; (3) open high voltage source, strengthen gradually voltage in the solution of cylinder surface with abundant electric charge, the electric field force that drop is subject to is greater than surface tension, till drop is elongated and forms after taylor cone continuously a large amount of spinning.
9. the preparation method of a kind of electrostatic spinning according to claim 8, is characterized in that, described spinning solution is polymer P VA, PVP, PVA-PVP, the aqueous solution of PEO.
10. the preparation method of a kind of electrostatic spinning according to claim 9, is characterized in that, described spinning solution is polymer P VA, PVP, and PVA-PVP, the mass volume ratio concentration of the aqueous solution of PEO is 6%-15%, water is distilled water.
CN201310675931.7A 2013-12-11 2013-12-11 A kind of electrospinning device and the method for the preparation of electrostatic spinning thereof Active CN103726110B (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN105401229A (en) * 2015-08-24 2016-03-16 武汉医佳宝生物材料有限公司 Electrostatic spinning multi-nuzzle arc jet apparatus

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WO2005024101A1 (en) * 2003-09-08 2005-03-17 Technicka Univerzita V Liberci A method of nanofibres production from a polymer solution using electrostatic spinning and a device for carrying out the method
US20120064186A1 (en) * 2005-05-03 2012-03-15 George Chase Method and device for producing electrospun fibers and fibers produced thereby
WO2006123858A1 (en) * 2005-05-18 2006-11-23 Industrial Cooperation Foundation Chonbuk National University Method of manufacturing mats consisting of nanofibers by electrospinning and mats manufactured thereby
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