Electrostatic dry-jet wet-spinning nanofiber preparation production line

Abstract

The utility model discloses an electrostatic dry-jet wet-spinning nanofiber preparation production line which comprises an electrostatic spinning nozzle used for spraying an electrostatic spinning solution. The electrode plate is used for attracting the sprayed electrostatic spinning solution; the first-stage solidification and stretching unit is arranged between the electrode plate and the electrostatic spinning nozzle, and the solidification and stretching unit is used for enabling the electrostatic spinning solution to be in a precipitation, solidification and forming state; the secondary solidification and stretching unit is used for further solidifying and stretching the nanofibers; and the third-stage solidification and stretching unit is used for further solidifying and stretching the nanofibers, so that the nanofibers are completely solidified and formed. According to the utility model, electrostatic spinning and dry-jet wet spinning processes are combined, and a fiber stretching process is supplemented, so that the clustered nanofibers are prepared, the strength of the fibers can be effectively enhanced, the mechanical property of the fibers is improved, and the service life of the fibers is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to nanometer fiber preparation technical field, concretely relates to a static dry spray wet spinning nanometer fiber preparation production line. BACKGROUND

[0002] In the field of nanometer fiber, its use grows very rapidly in high-end purification aspects, such as medicine, electronic circuit, environmental protection and energy. Nanometer fiber has very obvious advantages compared with traditional fiber according to its unique physical performance, small size effect represented by nanometer material. The low grammage and high specific surface area of nanometer fiber make it usually play the performance beyond the material itself when using.

[0003] Among the many methods of producing nanometer fiber, electrospinning has always been a simple and stable way to ensure product quality. Due to the characteristics of electrospinning, the polymer macromolecular chain in the spinning solution cannot be oriented along the fiber forming direction in the process of forming Taylor cone and jet in the air and flying to the collector at a very fast speed. It is equivalent to that the fiber material has not been stretched, which leads to the weak mechanical properties of the fiber formed by electrospinning, and finally leads to the weak mechanical properties of the whole film. UTILITARY MODEL CONTENT

[0004] The utility model discloses a static dry spray wet spinning nanometer fiber preparation production line.

[0005] The utility model discloses a static dry spray wet spinning nanometer fiber preparation production line.

[0006] A static dry spray wet spinning nanometer fiber preparation production line, comprising an electrospinning nozzle, the electrospinning nozzle is used for spraying electrospinning solution.

[0007] An electrode plate is used to attract the sprayed electrospinning solution.

[0008] A first coagulation and stretching unit is arranged between the electrode plate and the electrospinning nozzle, and is used to make the electrospinning solution in the state of coagulation and forming.

[0009] A second coagulation and stretching unit is used to further coagulate and stretch the nanometer fiber.

[0010] A third coagulation and stretching unit is used to further coagulate and stretch the nanometer fiber, so that the nanometer fiber is completely coagulated and formed.

[0011] As a further description of the above technical solution, the first coagulation and stretching unit comprises a first coagulation bath tank and a plurality of first collection rollers, wherein at least one first collection roller is arranged in the first coagulation bath tank.

[0012] As a further description of the above technical solution, the second coagulation and stretching unit comprises a second coagulation bath tank and a plurality of second collection rollers, wherein at least one second collection roller is arranged in the second coagulation bath tank.

[0013] As a further description of the above technical solution, the third coagulation and stretching unit comprises a third coagulation bath tank and a plurality of third collection rollers, wherein at least one third collection roller is arranged in the third coagulation bath tank.

[0014] As a further description of the above technical solution, the first coagulation bath tank, the second coagulation bath tank and the third coagulation bath tank all contain coagulation baths, which are prepared by solvent and non-solvent in a specified ratio.

[0015] As a further description of the above technical solution, the proportion of non-solvent in the coagulation baths in the first coagulation bath tank, the second coagulation bath tank and the third coagulation bath tank gradually increases.

[0016] As a further description of the above technical solution, the rotating speeds of the first collection rollers, the second collection rollers and the third collection rollers gradually increase.

[0017] As a further description of the above technical solution, it further comprises a hot stretching pipe, one side of which is provided with fourth collection rollers.

[0018] As a further description of the above technical solution, the first collection rollers, the second collection rollers and the third collection rollers all comprise a plurality of rollers, and the rollers are arranged in an up-and-down staggered manner.

[0019] The beneficial effects of the present application are as follows:

[0020] 1. The present application combines the processes of electrospinning and dry-jet wet spinning, and is supplemented by a fiber stretching process, to prepare bundled nanofibers, which can effectively enhance the strength of the fibers and improve the mechanical properties and service life of the fibers.

[0021] To more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the architecture diagram of the electrostatic dry-jet wet spinning nanofiber preparation production line of the present application.

[0023] Reference numerals: 1, electrostatic spinning nozzle; 2, primary coagulation bath tank; 3, electrode plate; 4, primary collection roller; 5, secondary coagulation bath tank; 6, secondary collection roller; 7, tertiary coagulation bath tank; 8, tertiary collection roller; 9, hot stretching tube; 10, fourth collection roller. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0025] As shown in the drawings, Figure 1 In one embodiment, an electrostatic dry-jet wet spinning nanofiber preparation line includes an electrostatic spinning nozzle 1 for spraying electrostatic spinning solution;

[0026] An electrode plate 3 for attracting the sprayed electrostatic spinning solution;

[0027] A primary coagulation and stretching unit is arranged between the electrode plate 3 and the electrostatic spinning nozzle 1, and is used to make the electrostatic spinning solution in a state of precipitating and coagulating into a shape;

[0028] A secondary coagulation and stretching unit is used to further coagulate and stretch the nanofiber;

[0029] A tertiary coagulation and stretching unit is used to further coagulate and stretch the nanofiber, so that the nanofiber is completely coagulated into a shape.

[0030] Through the above technical scheme, the process of electrostatic spinning and dry-jet wet spinning is combined, and a fiber stretching process is supplemented, so that the bundle nanofiber is prepared, the strength of the fiber can be effectively enhanced, and the mechanical properties and service life of the fiber are improved.

[0031] Specifically, in the molding process, the spinning solution is first sprayed from the electrostatic spinning nozzle 1 and flies towards the electrode plate 3. A primary coagulation bath tank 2 is arranged between the electrostatic spinning nozzle 1 and the electrode plate 3. The solution in the coagulation bath tank is a coagulation bath composed of a solvent and a non-solvent in a certain proportion, which can ensure that the fiber material can be precipitated and coagulated into a shape. The fiber material is stretched by the collection roller and passes through the primary coagulation bath tank 2. At this time, the nanofiber is already in a bundle state.

[0032] The nanofiber bundle is stretched by the secondary collection roller 6, the rotation speed of the collection roller 6 is higher than that of the primary collection roller 4, the nanofiber bundle enters the secondary coagulation bath tank 5, and the proportion of the non-solvent in the secondary coagulation bath tank 5 is higher than that in the primary coagulation bath tank 2. The nanofiber bundle is further coagulated and stretched in the secondary coagulation bath tank 5, so as to improve the mechanical properties of the nanofiber bundle.

[0033] The roles of the third coagulation bath tank 7 and the third collection roller 8 are similar, and it is necessary to point out that the proportion of the non-solvent in the third coagulation bath tank 7 is further increased, and the rotating speed of the third collection roller 8 is higher than that of the second collection roller 6. After the nanofiber bundle is coagulated and stretched by the third coagulation bath, the nanofiber bundle is completely coagulated and formed, and the mechanical property of the nanofiber bundle is greatly enhanced.

[0034] According to different materials, the first heat stretching pipe 9 can be used for first heat stretching, so as to further improve the mechanical property of the nanofiber bundle.

[0035] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A production line for preparing electrostatic dry-jet wet-spinning nanofibers, characterized in that, Includes an electrospinning nozzle, which is used to spray an electrospinning solution; Electrode plate, the electrode plate being used to attract the ejected electrospinning solution; A primary coagulation and stretching unit is disposed between the electrode plate and the electrospinning nozzle. The primary coagulation and stretching unit is used to cause the electrospinning solution to be in a state of precipitation and coagulation. The secondary solidification and stretching unit is used for further solidification and stretching of nanofibers; A three-stage solidification and stretching unit is used to further solidify and stretch the nanofibers so that the nanofibers are completely solidified and shaped.

2. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 1, characterized in that, The primary coagulation and stretching unit includes a primary coagulation bath and multiple primary collection rollers, wherein at least one primary collection roller is disposed within the primary coagulation bath.

3. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 2, characterized in that, The secondary coagulation and stretching unit includes a secondary coagulation bath and multiple secondary collection rollers, wherein at least one secondary collection roller is disposed in the secondary coagulation bath.

4. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 3, characterized in that, The three-stage coagulation and stretching unit includes a three-stage coagulation bath and multiple three-stage collecting rollers, wherein at least one three-stage collecting roller is disposed in the three-stage coagulation bath.

5. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 4, characterized in that, The primary coagulation bath, the secondary coagulation bath, and the tertiary coagulation bath all contain a coagulation bath, which is prepared by mixing a solvent and a non-solvent in a specified ratio.

6. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 3, characterized in that, The proportion of non-solvents in the coagulation baths of the primary, secondary, and tertiary coagulation baths gradually increases.

7. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 4, characterized in that, The rotational speeds of the primary, secondary, and tertiary collecting drums gradually increase.

8. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 1, characterized in that, It also includes a heat-stretched tube, on one side of which is provided a four-stage collecting roller.

9. The electrostatic dry-jet wet-spinning nanofiber preparation line according to claim 7, characterized in that, The primary, secondary, and tertiary collecting rollers each contain multiple rollers, which are arranged alternately vertically.

Images