CN115284638A - High-strength membrane preparation device and method based on electrostatic spinning method and application - Google Patents
High-strength membrane preparation device and method based on electrostatic spinning method and application Download PDFInfo
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- CN115284638A CN115284638A CN202210797819.XA CN202210797819A CN115284638A CN 115284638 A CN115284638 A CN 115284638A CN 202210797819 A CN202210797819 A CN 202210797819A CN 115284638 A CN115284638 A CN 115284638A
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000010041 electrostatic spinning Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 title description 2
- 239000007921 spray Substances 0.000 claims abstract description 52
- 239000002985 plastic film Substances 0.000 claims abstract description 47
- 229920006255 plastic film Polymers 0.000 claims abstract description 47
- 239000000155 melt Substances 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 10
- 239000004033 plastic Substances 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 17
- 238000001523 electrospinning Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 4
- 230000005686 electrostatic field Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 2
- 229920000642 polymer Polymers 0.000 abstract description 15
- 230000005684 electric field Effects 0.000 abstract description 8
- 230000001976 improved effect Effects 0.000 abstract description 8
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/267—Intermediate treatments, e.g. relaxation, annealing or decompression step for the melt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of plastic film forming, and discloses a high-strength film preparation device based on an electrostatic spinning method, a method and application thereof.A spray head outer layer is arranged, one side of the spray head outer layer is provided with a melt inlet with an inclined hole, and the outer side of the lower half part of the spray head outer layer is wrapped with a heating ring; the bottom of the spray head outer layer is fixedly provided with a spray head cone through threaded connection, a spray head inner layer is fixed inside the spray head outer layer, and an annular gap is formed between the spray head outer layer and the spray head inner layer; the inside on shower nozzle inlayer is run through and is installed interior air current subassembly, interior air current subassembly passes through the bearing and is connected with the shower nozzle inlayer, interior air current subassembly upper end is fixed with rotary joint. Due to the strong stretching action of the electric field force in the electrostatic spinning process, the inner molecular chain of the polymer is oriented to prepare the plastic film, and the strength of the film is greatly improved.
Description
Technical Field
The invention belongs to the technical field of plastic film forming, and particularly relates to a high-strength film preparation device and method based on an electrostatic spinning method, and application of the high-strength film preparation device.
Background
Plastic films are widely used in the fields of food, medical treatment, chemical industry, agriculture, and the like in the ways of packaging, covering, and the like. The processing method of the plastic film generally includes: extrusion blow molding, cast molding, biaxial stretching, and the like. Of these, extrusion blow molding is the most widespread method for producing plastic films. The general working principle of extrusion film blowing is that the material is added into the hopper of the extruder, under the action of external heat source heating and shearing heat generation of the screw, the material is melted and plasticized, the plastic melt is extruded into the machine head, and then is formed into a film tube blank through an annular gap die, and at the moment, the tail end of the tube blank is sealed and led to a traction roller. Compressed air is blown in from the mandrel hole, the tube blank is transversely unfolded, meanwhile, the traction roller continuously and longitudinally drafts, the film tube achieves the required thickness and diameter, and the film tube is subjected to subsequent procedures of cutting, printing and the like to form a final film product.
The physical and mechanical properties are one of the key factors influencing the quality of the prepared plastic film product. The physical and mechanical properties of the plastic film mainly comprise tensile strength, elongation at break, tear strength, impact strength and the like. The strengthening and toughening of the plastic film can be realized by methods such as blending, filling, strengthening, self-strengthening and the like, wherein the self-strengthening is realized by adopting a specific die head in the processing process of the polymer or adopting a specific strengthening element in a polymer melt runner, and the strengthening and toughening of the polymer are concentrated on the microcosmic aspects of the improvement of molecular chain orientation, the improvement of the dispersibility of the filler in the polymer, the improvement of the acting force of the filler and the polymer interface, the effective transfer of the filler to the load and the like.
Electrostatic spinning is a high molecular material processing method for preparing superfine fiber, in the electrostatic spinning process, polymer melt or solution is subjected to strong stretching action of electric field force to form jet flow, and polymer molecular chains are gradually highly oriented along the jet flow direction in the processes of forming and rapidly falling of the jet flow. The oriented polymer can show obvious anisotropy, the mechanical property along the orientation direction is obviously improved, the orientation of the crystalline polymer is the result of straightening the micro molecular beam chain segment of the connecting wafer, the mechanical property and the density are both improved in the orientation direction, and the elasticity and the toughness are also improved. The orientation of the molecular chains is desirable for certain plastics, such as film, wire and hinge, to increase the tensile strength, gloss and flexural strength of the plastic part in the direction of stretching. Therefore, in the production process of the plastic film, the plastic film is combined with electrostatic spinning, and the tensile strength and other properties of the product are effectively improved by utilizing the strong orientation effect of the molecular chains in the electrostatic spinning process, so that the product quality is improved.
Disclosure of Invention
In order to overcome the problems in the related art, the disclosed embodiments of the present invention provide a high-strength film preparation apparatus based on an electrospinning method. The technical scheme is as follows:
the high-strength film preparation device based on the electrostatic spinning method is provided with a nozzle outer layer, one side of the nozzle outer layer is provided with a melt inlet with an inclined hole, and the outer side of the lower half part of the nozzle outer layer is wrapped with a heating ring;
the bottom of the spray head outer layer is fixedly provided with a spray head cone through threaded connection, a spray head inner layer is fixed inside the spray head outer layer, and an annular gap is formed between the spray head outer layer and the spray head inner layer;
the inside on shower nozzle inlayer is run through and is installed interior airflow component, interior airflow component passes through the bearing and is connected with the shower nozzle inlayer, interior airflow component upper end is fixed with rotary joint, there is interior airflow inlet on the rotary joint, interior airflow component upper portion is fixed with driven gear, driven gear and driving gear mesh mutually, and the drive driving gear is connected with the motor, thereby the motor is rotatory through the rotatory interior airflow component of drive driving gear drive, and the bottom fixedly connected with outer airflow component of heat preservation, the upper portion fixed mounting of outer airflow component has the collection platform, outer airflow component is connected with high-voltage electrostatic generator.
In one embodiment, the outer layer of the spray head is a cylindrical rotary body structure with a large upper part and a small lower part.
In one embodiment, the heating ring is wrapped with an insulating layer, and the length of the insulating layer is greater than that of the heating ring;
the distance between the lower end surface of the heat-insulating layer and the tip of the bottom of the spray nozzle cone is 100mm.
In one embodiment, the insulating layer and the inner airflow component are made of high-temperature-resistant insulating materials.
In one embodiment, the spray head cone is an outwardly-inwardly extending cone structure, and the bottom of the spray head cone is an annular tip.
In one embodiment, the inner airflow assembly is a tubular structure that is rotatably disposed relative to the inner layer of the showerhead.
In one embodiment, the inner side of the collecting platform is of a conical surface structure, a herringbone plate is fixedly installed on the lower side of the outer airflow component, and a plastic film pipe formed by a high-strength plastic film is arranged between the spray head cone and the herringbone plate.
In one embodiment, the outer side of the herringbone plate is provided with a squeezing roller for squeezing the plastic template flat and a collecting roller for collecting the squeezed plastic film.
In one embodiment, the showerhead outer layer is grounded.
In one embodiment, an external airflow inlet is provided on the external airflow assembly.
Another object of the present invention is to provide a method for implementing the apparatus for preparing a high-strength film based on an electrospinning method, including the steps of:
step one, melting and plasticizing a plastic raw material and then introducing the plastic raw material into a melt electrostatic spinning nozzle;
step two, forming a thin melt layer at the annular tip after the plastic melt is uniformly distributed in the spinning nozzle in the self-flowing circumferential direction;
step three, under the action of a high-voltage electrostatic field, a melt thin layer at the ring-shaped tip is self-organized to form uniform and stable multiple jet flows;
step four, after fully stretching, the jet flow is rolled and bonded together to form a melt thin layer again;
and step five, the thin melt layer is blown by internal airflow to form a plastic film tube, the plastic film tube is cooled and shaped by external airflow at the same time, and the film tube is flattened to form a double-layer plastic film which is collected into a coil.
The invention also aims to provide an application of the high-strength film preparation method based on the electrostatic spinning method in high-strength film preparation.
By combining all the technical schemes, the invention has the advantages and positive effects that:
first, aiming at the technical problems existing in the prior art and the difficulty in solving the problems, the technical problems to be solved by the technical scheme of the present invention are closely combined with results, data and the like in the research and development process, and some creative technical effects are brought after the problems are solved. The specific description is as follows:
the physical and mechanical properties of plastic films are important considerations that affect the quality of the final products. How to further improve the properties such as tensile strength, tearing strength and the like becomes one of the problems which need to be solved urgently in the production process of the plastic film. The reinforcing and toughening of the plastic film can be realized by methods such as blending, filling, reinforcing and self-reinforcing, and the methods such as blending, filling and reinforcing need to additionally add other auxiliary materials or steps such as pre-processing granulation at the early stage, so that additional cost and energy consumption are increased. Therefore, a self-reinforcing method to achieve an increase in molecular chain orientation by using a specific die or specific reinforcing elements during polymer processing is an effective way to increase the strength of plastic films. The method can effectively improve the physical and mechanical properties of the plastic film, simultaneously reduce or avoid extra filler addition and energy consumption to the maximum extent, is favorable for energy conservation and emission reduction, and meets the development target of national carbon peak-to-peak carbon neutralization. In the melt electrostatic spinning process, the melt is polarized in a strong electric field and then is subjected to the action of electric field force to form jet flow, the jet flow speed is extremely high, in the falling process, the micro molecular beam chain segment connected with the wafer is straightened, the molecular chain is oriented, the oriented polymer can present obvious anisotropy, and the mechanical property along the orientation direction is obviously improved, so that the fiber after the melt electrostatic spinning presents good strength and toughness. Therefore, the technical scheme of the invention can achieve the effect of plastic self-reinforcement by utilizing the orientation effect of the molecular chains in the melt electrostatic spinning process, and can effectively improve the physical and mechanical properties of the plastic film by applying the molecular chains to the plastic film processing industry.
Secondly, regarding the technical solution as a whole or from the perspective of products, the technical effects and advantages of the technical solution to be protected by the present invention are specifically described as follows:
the plastic film is widely used in daily life of people, and the strength requirement of the plastic film is higher and higher. The technical scheme provided by the invention is applied to the plastic film production industry, can greatly improve the physical and mechanical properties of the plastic film on the premise of not additionally adding fillers, not needing preprocessing granulation and the like, saves energy, reduces emission, and is beneficial to promoting the realization of the strategic target of carbon neutralization of national carbon peak.
Third, as an inventive supplementary proof of the claims of the present invention, the following is also presented:
the technical scheme of the invention creatively links the melt electrostatic spinning technology with the plastic extrusion blow molding technology, solves the problem of self-reinforcement in the plastic film processing process, fills up the blank of the related technology, and can effectively promote the development of the plastic film production technology in China.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a structural view of a high-strength film preparing apparatus according to an embodiment of the present invention, which is based on an electrospinning method;
FIG. 2 is a flow chart of a method for preparing a high-strength film based on an electrospinning method according to an embodiment of the present invention;
in the figure: 1. a melt inlet; 2. a nozzle outer layer; 3. a heat-insulating layer; 4. heating a ring; 5. a nozzle cone; 6. a collection station; 7. an outer airflow assembly; 8. a high voltage electrostatic generator; 9. an external air inlet; 10. an inner airflow assembly; 11. jetting; 12. an inner layer of the nozzle; 13. an annular melt layer; 14. a bearing; 15. a driving gear; 16. a motor; 17. a driven gear; 18. a rotary joint; 19. an inner gas flow inlet; 20. a plastic film tube; 21. a herringbone plate; 22. a squeeze roll; 23. and collecting the roller.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In order to improve the physical and mechanical properties such as tensile strength and the like of a plastic film, the invention combines molecular chain orientation effect in melt electrostatic spinning with plastic film preparation, and provides a high-strength film preparation device and method based on an electrostatic spinning method, wherein the device comprises the following steps:
a preparation method of a high-strength film based on an electrostatic spinning method comprises the following steps:
s101, melting and plasticizing a plastic raw material, and introducing the plastic raw material into a melt electrostatic spinning nozzle;
s102, forming a thin melt layer at the annular tip after plastic melts are uniformly distributed in the spinning nozzle in the self-flowing circumferential direction;
s103, gradually adjusting the high-voltage electrostatic generator 8, applying voltage to 70kV-80kV, grounding a spinning spray head, and forming uniform and stable multi-strand jet flow 11 by self-organizing a melt thin layer at the ring tip under the action of a high-voltage electrostatic field;
s104, extruding and grinding the multiple jet flows 11 after full stretching by the rotating inner airflow component 10, and then bonding the multiple jet flows together, wherein the rotating speed range of the inner airflow component 10 is 10-120 rpm, adjusting the rotating speed of the inner airflow component 10 according to different purposes of the film to achieve the optimal service performance, and forming a melt thin layer again after the jet flows 11 are extruded and ground;
and S105, the thin melt layer is blown by internal air flow to form a plastic film tube 20, the plastic film tube is cooled and shaped by external air flow, the film tube is flattened to form a double-layer plastic film, and the double-layer plastic film is collected into a coil.
The outer layer 2 of the spray head is a cylindrical revolving body structure with a big top and a small bottom, one side of the outer layer 2 of the spray head is provided with an inclined hole which is a melt inlet 1, a heating ring 4 is wrapped on the outer half part of the outer layer 2 of the spray head, a heat preservation layer 3 is made of high temperature resistant insulating materials and is longer than the heating ring 4, the distance between the lower end surface of the heat preservation layer 3 and the top end of the bottom of a spray head cone 5 is about 100mm, the spray head cone 5 is fixed at the bottom of the outer layer 2 of the spray head through threaded connection, the spray head cone 5 is a cone structure extending from outside to inside, the bottom of the spray head cone is an annular top end, a spray head inner layer 12 is fixed inside the outer layer 2 of the spray head, due to the diameter difference, an annular gap is formed between the outer layer 2 of the spray head and the spray head inner layer 12 of the spray head, after the melt inlet 1 of the melt is introduced into the polymer, the melt is gradually and uniformly distributed along the annular gap to form an annular melt layer 13, the inner airflow component 10 integrally of a tubular structure which vertically penetrates through the spray head inner layer 12, the inner airflow component 10 is also made of high temperature resistant insulating material, the inner airflow component 10 is connected with the inner layer 12 of the sprayer through a bearing 14, the inner airflow component 10 can rotate relative to the inner layer 12 of the sprayer, the upper end of the inner airflow component 10 is fixed with a rotary joint 18, an inner airflow inlet 19 is arranged on the rotary joint 18, a driven gear 17 is fixed on the upper part of the inner airflow component 10, a driving gear 15 is meshed with the driven gear 17, a motor 16 drives the driving gear 15 to rotate so as to drive the inner airflow component 10 to rotate, the outer airflow component 7 is connected with the bottom end of the heat preservation layer 3 and is arranged below the heat preservation layer 3, a collecting table 6 is fixed on the upper part of the outer airflow component 7, the inner side of the collecting table 6 is of a conical surface structure, a lambdoidal plate 21 is arranged at a certain distance below the outer airflow component 7, the distance is adjusted according to the length of the plastic film tube 20, a squeezing roller 22 is used for squeezing the plastic template to be flat for convenient collection, the collecting roller 23 is used for collecting the extruded flat plastic film, the high-voltage electrostatic generator 8 is connected with the outer airflow component 7, and the outer layer 2 of the spray head is grounded.
The method comprises the steps of feeding polymer raw materials into a melt inlet 1 after melting and plasticizing, enabling the polymer melt to flow downwards along an annular gap between a spray head outer layer 2 and a spray head inner layer 12 and be gradually and uniformly distributed to form an annular melt layer 13, enabling the annular melt layer 13 to continuously flow downwards to the inner surface of a spray head cone 5 to form a melt thin layer and collect at the annular tip of the bottom of the spray head cone 5, enabling a heating ring 4 to continuously provide heat for the spray head to enable the melt to keep good fluidity, then turning on a motor 16 to drive an inner airflow component 10 to rotate, respectively introducing compressed air from an outer airflow inlet 9 and an inner airflow inlet 19, enabling the spray head outer layer 2 to be grounded, enabling an outer airflow component 7 to be connected with a high-voltage electrostatic generator 8, turning on the outer airflow generator 8, adjusting the voltage to 80kV, enabling the airflow component 7 to have high-voltage static electricity, and enabling the spray head outer layer 2 to be grounded, a high-voltage electric field is formed between the upper surface of the outer airflow component 7 and the tip of the bottom of the spray head cone 5, the annular tip of the bottom of the spray head cone 5 is inductively charged, a melt thin layer gathered on the top is polarized by the electric field to form a plurality of evenly-distributed jets 11 with the quantity of about 70-80, in the process of strong stretching of the jets 11 by the electric field, molecular beam chain segments stretch and are gradually highly oriented along the direction of the jets 11, the heat preservation layer 3 is used for keeping the temperature of the jets 11 and avoiding cooling, the jets 11 fall into the gap between the outer airflow component 7 and the inner airflow component 10, the width of the gap is 0.5-1mm, the collection table 6 plays a guiding role and can guide the jets 11 with offset positions into the gap, the rotation of the inner airflow component 10 enables the relative motion to be generated between the outer airflow component 7 and the inner airflow component 10, a plurality of jets 11 in the gap are bonded together after being rolled to form the melt thin layer, and then the inner airflow component 10 is blown under the action of the airflow to form a film tube, the gas pressure in the inner airflow component 10 is used for keeping the diameter of the film tube, the airflow introduced into the outer airflow component 7 is used for keeping the diameter of the film tube firstly, and is used for cooling and shaping the film tube in time, the film tube is extruded and flattened under the guiding action of the herringbone plate 21 to form a double-layer plastic film, and then the double-layer plastic film is collected into a coil by a collecting roller 23, so that the inner molecular chain of the polymer is oriented to form the plastic film due to the strong stretching action of the electric field force in the electrostatic spinning process, and the strength of the film is greatly improved.
The invention also provides an application of the high-strength film preparation method based on the electrostatic spinning method in high-strength film preparation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention disclosed herein, which is within the spirit and principle of the present invention, should be covered by the present invention.
Claims (10)
1. The high-strength film preparation device based on the electrostatic spinning method is characterized by being provided with a nozzle outer layer (2), wherein one side of the nozzle outer layer (2) is provided with a melt inlet (1) with an inclined hole, and the outer side of the lower half part of the nozzle outer layer (2) is wrapped with a heating ring (4);
the bottom of the spray head outer layer (2) is fixedly connected with a spray head cone (5) through threads, a spray head inner layer (12) is fixedly arranged inside the spray head outer layer (2), and an annular gap is formed between the spray head outer layer (2) and the spray head inner layer (12);
interior air current subassembly (10) is installed in the inside of shower nozzle inlayer (12) through installing, interior air current subassembly (10) is connected with shower nozzle inlayer (12) through bearing (14), interior air current subassembly (10) upper end is fixed with rotary joint (18), there is interior air current inlet (19) on rotary joint (18), interior air current subassembly (10) upper portion is fixed with driven gear (17), driven gear (17) and driving gear (15) mesh mutually, and drive driving gear (15) are connected with motor (16), thereby motor (16) are rotatory in the drive through drive driving gear (15) drive air current subassembly (10), and the bottom fixedly connected with air current subassembly (7) of heat preservation (3), the upper portion fixed mounting of outer air current subassembly (7) has collection platform (6), outer air current subassembly (7) are connected with high-voltage electrostatic generator (10).
2. The high-strength film production apparatus based on the electrospinning method according to claim 1, wherein the nozzle outer layer (2) is a cylindrical rotating body structure with a large top and a small bottom, and the nozzle outer layer (2) is grounded.
3. The high-strength film preparation apparatus based on the electrospinning method according to claim 1, wherein the heating ring (4) is externally wrapped with an insulation layer (3), and the insulation layer (3) has a length greater than that of the heating ring (4);
the distance between the lower end surface of the heat-insulating layer (3) and the top end of the bottom of the spray head cone (5) is 100mm.
4. The high-strength film manufacturing apparatus based on the electrospinning method according to claim 3, wherein the insulating layer (3) and the inner airflow component (10) are made of high-temperature-resistant insulating materials.
5. The high-strength film manufacturing apparatus based on the electrospinning method according to claim 1, wherein the shower head cone (5) has a cone structure extending from the outside to the inside, and the bottom of the shower head cone (5) is a ring-shaped tip.
6. The electrospinning-based high-strength film manufacturing apparatus according to claim 1, wherein the inner airflow assembly (10) is a tubular structure, and the inner airflow assembly (10) is rotatably disposed with respect to the showerhead inner layer (12).
7. The high-strength film preparing apparatus based on the electrospinning method according to claim 1, wherein the collecting table (6) has a conical structure inside, a herringbone plate (21) is fixedly installed on the lower side of the outer airflow component (7), a plastic film tube (20) is arranged between the nozzle cone (5) and the herringbone plate (21), and an outer airflow inlet (9) is arranged on the outer airflow component (7).
8. The high-strength film manufacturing apparatus based on the electrospinning method according to claim 7, wherein the herringbone plate (21) is provided at the outer side with a squeeze roller (22) for squeezing the plastic template flat and a collecting roller (23) for collecting the squeezed plastic film.
9. A method for implementing the high-strength electrostatic spinning method-based film manufacturing apparatus according to any one of claims 1 to 8, wherein the method for manufacturing the high-strength electrostatic spinning method-based film includes the steps of:
step one, melting and plasticizing a plastic raw material and then introducing the plastic raw material into a melt electrostatic spinning nozzle;
step two, forming a thin melt layer at the annular tip after the plastic melt is uniformly distributed in the spinning nozzle in the self-flowing circumferential direction;
step three, under the action of a high-voltage electrostatic field, a melt thin layer at the ring-shaped tip is self-organized to form uniform and stable multiple jet flows (11);
step four, the jet flow (11) is rolled and bonded together after being fully stretched, and a melt thin layer is formed again;
and step five, the thin melt layer is blown by internal airflow to form a plastic film tube (20), the plastic film tube is cooled and shaped by external airflow at the same time, and the film tube is flattened to form a double-layer plastic film which is collected into a coil.
10. Use of the method of claim 9 for producing a high-strength film based on an electrospinning process for producing a high-strength film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210797819.XA CN115284638A (en) | 2022-07-06 | 2022-07-06 | High-strength membrane preparation device and method based on electrostatic spinning method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210797819.XA CN115284638A (en) | 2022-07-06 | 2022-07-06 | High-strength membrane preparation device and method based on electrostatic spinning method and application |
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| CN202210797819.XA Pending CN115284638A (en) | 2022-07-06 | 2022-07-06 | High-strength membrane preparation device and method based on electrostatic spinning method and application |
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