CN112709011B - Process for making polymeric nonwoven tubes - Google Patents
Process for making polymeric nonwoven tubes Download PDFInfo
- Publication number
- CN112709011B CN112709011B CN201911025601.7A CN201911025601A CN112709011B CN 112709011 B CN112709011 B CN 112709011B CN 201911025601 A CN201911025601 A CN 201911025601A CN 112709011 B CN112709011 B CN 112709011B
- Authority
- CN
- China
- Prior art keywords
- collecting roller
- polymer
- liquid container
- woven tube
- circular hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/76—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres otherwise than in a plane, e.g. in a tubular way
Abstract
The invention relates to the field of high molecular materials, and discloses a method for preparing a polymer non-woven tube, which is carried out by adopting electrostatic spinning equipment; the electrospinning device includes: the device comprises a feeding unit, an electrostatic generator, a collecting roller, a power mechanism, a first transmission device and a second transmission device; the method comprises the following steps: (1) under the action of static voltage, the polymer solution in the feed liquid container flies to the collecting roller through the circular hole component to form polymer fibers, and a nonwoven tube blank is gradually formed; the static voltage is 1-30kV, and the rotating speed of the collecting roller is 10-300 r/min; (2) and carrying out post-treatment on the non-woven tube blank to obtain the polymer non-woven tube. The invention can prepare various common non-woven fabric raw materials into the non-woven tube, has simple and convenient operation and good mechanical property of the product, meets the use requirements of the support material of the tubular membrane and the hollow fiber membrane, and can be applied to the field of preparation of polymer separation membranes.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a method for preparing a polymer non-woven tube.
Background
A nonwoven fabric is a fabric formed without spinning a woven fabric, which is formed by orienting or randomly arranging textile staple fibers or filaments to form a web structure, and then reinforcing the web structure by mechanical, thermal or chemical means. The non-woven fabric is not interwoven and knitted by yarns one by one, but mainly bonds fibers directly by a physical method. The non-woven fabric has the characteristics of short process flow, high production rate, high yield, low cost, wide application, more raw material sources and the like.
The non-woven fabric is suitable for industries such as agricultural films, shoemaking, leather making, mattresses, primary and secondary quilts, decoration, chemical engineering, printing, automobiles, building materials, furniture and the like, and is widely used in clothing interlinings, medical and sanitary disposable operating gowns, masks, hats, bedsheets, hotel disposable tablecloths, beauty treatment, sauna and even modern gift bags, competitive products, shopping bags, advertisement bags and the like. In addition, in recent years, nonwoven fabrics have been used as support materials for polymer separation membranes.
However, due to the conventional manufacturing process, the nonwoven fabric is mostly in the form of a sheet, and when it is used as a support material for a polymer separation membrane, it can be used only for producing a flat membrane. If a tubular nonwoven material, i.e., a nonwoven tube, can be produced, it can be used as a support material for a tubular membrane or a hollow fiber membrane. Therefore, there have been studies on a method for preparing a nonwoven fabric useful as a support material for a hollow fiber membrane. For example, CN101239281A discloses a method for preparing a non-woven tube reinforced polyvinylidene fluoride hollow fiber membrane, which includes preparation using a terylene reinforced non-woven tube, comprising: (1) dispersing terylene into a polyacrylamide solution to obtain fiber slurry, and manufacturing a non-woven tube blank through a tubular mold; (2) placing the non-woven tube blank between two flat plates, inserting a round bar, and performing rolling and drying to obtain a non-woven tube; (3) immersing the non-woven tube obtained in the step (2) into a polyurethane adhesive, taking out and drying to obtain a reinforced non-woven tube; (4) and carrying out heat treatment on the reinforced non-woven tube to obtain a secondary reinforced non-woven tube. In this method, the types of materials that can be molded by the tubular mold to obtain the tube blank are very limited, and the steps for producing the nonwoven tube are complicated.
Disclosure of Invention
The invention aims to overcome the problem of difficult preparation of non-woven tubes in the prior art, and the inventor of the invention finds out in research that: in an electrospinning apparatus, when a spinnable polymer solution is flown to another electrode through fine holes at a high electrostatic voltage (1 to 30kV), fibers having a diameter of several hundred nanometers are formed and accumulated in random directions at the end point, and if a conductive collecting roller is provided at the end point electrode and the collecting roller is rotated at a certain speed (10 to 300 rpm), a nonwoven fabric blank can be successfully produced. Based on this finding, a method of making a polymeric nonwoven tube is presented.
In order to achieve the above object, the present invention provides a method for preparing a polymer nonwoven tube, which is carried out using an electrospinning device; the electrospinning device includes: the device comprises a feeding unit, an electrostatic generator, a collecting roller, a power mechanism, a first transmission device and a second transmission device; wherein the content of the first and second substances,
the feeding unit comprises a feed liquid container and a circular hole member, the circular hole member is made of a conductive material, and the collecting roller is a cylinder with a conductive surface; the electrode of the static generator is connected with the circular hole component, and the surface of the collecting roller is grounded; under the action of the power mechanism, the collecting roller is driven by the first transmission device to rotate around the shaft of the collecting roller, and the feed liquid container is drawn by the second transmission device to do reciprocating linear motion along the direction parallel to the axis of the collecting roller;
the method comprises the following steps:
(1) under the action of static voltage, the polymer solution in the feed liquid container flies to the collecting roller through the circular hole component to form polymer fiber and gradually form a non-woven tube blank;
the static voltage is 1-30kV, and the rotating speed of the collecting roller is 10-300 r/min;
(2) and carrying out post-treatment on the non-woven tube blank to obtain the polymer non-woven tube.
Through the technical scheme, various common non-woven fabric raw materials can be made into the non-woven tube, the operation is simple and convenient, the mechanical property of the product is good, the use requirement of the product as a support material of a tubular membrane and a hollow fiber membrane is met, the fiber diameter and the porosity of the non-woven tube are adjustable, and the non-woven fabric non-woven tube can be applied to the field of preparation of polymer separation membranes.
Drawings
FIG. 1 is a schematic view of an electrospinning apparatus of the present invention.
Fig. 2 is a schematic view of the feed units of two embodiments of the electrospinning apparatus of the present invention.
Description of the reference numerals
1: a collection roller; 2: a first transmission device; 3: a second transmission device; 4: an electrostatic generator; 5 a: a feed liquid container; 5 b: a circular hole member; 5 c: a piston; 5 d: a constant speed propulsion device; 5 e: a constant flow pump; 5 f: a pipeline; 6: a power mechanism; 7: an electric brush; 8: a lifting device; 9: a laser device.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The invention provides a method for preparing a polymer nonwoven tube, which is carried out by adopting electrostatic spinning equipment. As shown in fig. 1, the electrospinning device includes: the device comprises a feeding unit, an electrostatic generator 4, a collecting roller 1, a power mechanism 6, a first transmission device 2 and a second transmission device 3; wherein the feeding unit comprises a feed liquid container 5a and a circular hole member 5b, the circular hole member 5b is made of a conductive material, and the collecting roller 1 is a cylinder with a conductive surface; the electrode of the electrostatic generator 4 is connected with the circular hole member 5b, and the surface of the collecting roller 1 is grounded, for example, by a brush 7; under the action of the power mechanism 6, the collecting roller 1 is driven by the first transmission device 2 to rotate around the shaft thereof, and the feed liquid container 5a is drawn by the second transmission device 3 to do reciprocating linear motion along the direction parallel to the axis of the collecting roller 1.
According to the present invention, the method for preparing a polymer nonwoven tube comprises the steps of:
(1) under the action of static voltage, the polymer solution in the feed liquid container 5a flies to the collecting roller 1 through the round hole member 5b to form polymer fibers, and gradually forms a non-woven tube blank; the static voltage is 1-30kV, and the rotating speed of the collecting roller 1 is 10-300 r/min;
(2) and carrying out post-treatment on the non-woven tube blank to obtain the polymer non-woven tube.
The present invention does not particularly require the type of polymer or solvent in the polymer solution, and any polymer or solvent may be used as long as it can be used to produce chemical fibers by a solution spinning method.
Generally, the polymer may be selected from at least one of polyamide, polyurethane, polyvinyl alcohol, polyvinyl acetate, polyvinyl chloride, polyethylene terephthalate, polyacrylonitrile, and regenerated cellulose. The polymers of the present invention suitable for spinning are all commercially available.
Generally, the solvent may be selected from at least one of water, acetone, fatty alcohol, aliphatic hydrocarbon, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, benzene, toluene, xylene, m-cresol, hexafluoropropane, N-methylpyrrolidone, N-dimethylformamide, N-dimethylacetamide, and dimethylsulfoxide.
Preferably, the polymer content of the polymer solution is 2 to 15% by weight.
According to the invention, said first transmission means 2 are preferably a detachable shaft coupling to facilitate the removal of said collecting roller 1.
According to the invention, the feed unit can deliver the polymer solution quantitatively.
According to one embodiment, as shown in fig. 2(a), the circular hole member 5b is provided on the feed liquid container 5a in a protruding manner; the feeding unit comprises a constant-speed propelling device 5d and a piston 5c arranged in the feed liquid container 5a, and the constant-speed propelling device 5d pushes the piston 5c to convey the polymer solution to the collecting roller 1 through the circular hole member 5 b.
In another embodiment, as shown in fig. 2(b), the circular hole member 5b is an electrically conductive needle tube, the feeding unit includes a constant flow pump 5e, and the feed liquid container 5a, the constant flow pump 5e and the electrically conductive needle tube are sequentially connected through a pipeline 5 f.
According to the present invention, it is preferable that the diameter of the circular hole member 5b is 0.1 to 2 mm.
According to the present invention, it is preferable that the minimum distance L (hereinafter also referred to as "air gap") of the circular hole member 5b from the surface of the collecting roller 1 is 5 to 25cm, so that the polymer in the solution is more easily oriented to become fibrous during flight.
According to the invention, the feeding speed of the feed liquid container 5a can be adjusted between 1 mL/h and 200mL/h, and the reciprocating speed can be continuously adjusted between 10 mm/min and 1000 mm/min. Preferably, the feeding speed is 1-50mL/h, and the reciprocating speed is 200-1000 mm/min. The inventors of the present invention found that the higher the feed rate, the higher the mechanical strength of the resulting polymer nonwoven tube, but the porosity is decreased, and therefore, from the viewpoint of increasing the porosity, it is further preferable that the feed rate of the feed liquid container is 1 to 10 mL/h.
According to the invention, the collecting roller 1 preferably has a length of 20-300cm and a diameter of 1-20 mm. It will be understood that the length and diameter of the collector roll 1 is the length and inner diameter of the nonwoven tube blank.
According to the invention, preferably, the electrostatic spinning equipment further comprises a laser 9, a bracket provided with scale marks and a lifting device 8, wherein the bracket is positioned at one end of the collecting roller 1, the laser 9 is installed on the bracket and is adjustable up and down through the lifting device 8, and the laser beam direction of the laser 9 is parallel to the axis of the collecting roller 1 and is used for checking the thickness of the non-woven tube blank on the collecting roller 1 in real time.
According to the invention, the post-treatment of step (2) can be chosen with reference to the prior art, as long as the polymeric nonwoven tube is obtained. Generally, the post-processing may include: the nonwoven tube blank is subjected to a gluing treatment with a solution of an adhesive, for example a polyurethane solution. In addition, when the polymer used in the present invention is required to improve the properties of the nonwoven tube by a chemical reaction, the post-treatment includes: before the gluing treatment, the whole nonwoven tube blank is subjected to a chemical reaction. The reaction raw materials and reaction conditions for the chemical reaction with the polymer are selected according to the kind of the polymer, which is well known in the art and will not be described in detail herein.
According to a particular embodiment, the polymer is polyvinyl alcohol, and in step (2), before the gluing treatment, the post-treatment further comprises: the nonwoven fabric blank was subjected to a chemical reaction (acetalization reaction of polyvinyl alcohol).
In the step (2), when the compatibility between the adhesive solution selected in the adhesion treatment and the polymer is good, the adhesion treatment comprises: and soaking the non-woven tube blank in the adhesive solution for 1-10s, and drying. If the adhesive used (for example a one-component epoxy resin) requires a post-treatment to cure, the adhesive treatment also comprises: the adhesive is cured in accordance with customary work-up procedures for the adhesives used. And after the gluing treatment is finished, a finished product of the non-woven tube is obtained.
The present invention will be described in detail below by way of examples.
The method for preparing a polymer nonwoven tube according to the present invention will be described below with reference to FIGS. 1 and 2 (a). In fig. 1 and 2(a), the electrospinning apparatus includes: the device comprises a feeding unit, an electrostatic generator 4, a collecting roller 1, a power mechanism 6, a detachable shaft connector, a second transmission device 3, a bracket provided with scale marks, a lifting device 8 and a laser 9; the feeding unit comprises a feed liquid container 5a, a circular hole member 5b, a piston 5c and a constant-speed propelling device 5 d; the connection of the devices is as described above and shown in the drawings.
The nonwoven tube performance test method is as follows:
1) mechanical strength
The mechanical strength is expressed as tensile break strength, which is tested in accordance with GB/T1040.5-2008.
2) Average fiber diameter
The diameter distribution of the fiber is measured by adopting a scanning electron microscope, and the specific test method comprises the following steps: randomly selecting 5 areas on a non-woven tube, observing and measuring the diameters of all visible fibers in each area under a scanning electron microscope, and then calculating the average diameter and the standard deviation; the smaller the standard deviation, the better the uniformity of the nonwoven tube.
3) Porosity of nonwoven tubes
The porosity of the non-woven tube is measured by a wet weight method, and the test medium is water generally; but for nonwoven materials that are soluble in water, the test medium uses other volatile solvents that do not dissolve the nonwoven; the specific test method comprises the following steps: shearing a section of non-woven tube, inserting a cylindrical core which has the same inner diameter as the non-woven tube and can not absorb the test medium, wholly immersing the non-woven tube in the test medium for a period of time, taking out the non-woven tube, sucking away the test medium attached to the surface of the non-woven tube by using filter paper, and weighing; then putting the powder into a vacuum drying oven for drying, weighing again after thorough drying, and finally calculating the porosity according to the formula I:
in formula I, P is porosity, mwIs the wet weight (g) of the sample, mdIs the sample dry weight (g), and ρ is the test medium density (g/cm)3)，doIs the outer diameter (cm), d of the sampleiIs the sample inner diameter (cm) and l is the sample length (cm).
The greater the porosity, the better the water permeability of the nonwoven tube.
Example 1
1) Dissolving 6g of polyacrylonitrile in 54g N, N-dimethylformamide to obtain a polyacrylonitrile solution, and transferring the polyacrylonitrile solution to a feed liquid container of electrostatic spinning equipment;
2) under the action of static voltage, the polyacrylonitrile solution in the material liquid container flies to the collecting roller through the round hole component to form polymer fiber and gradually form a non-woven tube blank;
the parameters of electrostatic spinning are as follows: the inner diameter of the circular hole member was 0.2mm, the air gap was 10cm, a collecting roller having a diameter of 1.2mm and a length of 1m was used, the rotational speed of the collecting roller was 200 rpm, the solution conveying speed was 1.2mL/h, the reciprocating speed of the feed liquid container was 600mm/min, and the electrostatic voltage was 3 kV.
Stopping spinning when the thickness of the non-woven tube blank reaches 0.3mm detected by the laser, detaching the collecting roller and taking down the non-woven tube blank from one end;
3) 10g of polyurethane particles are dissolved in 90g N, N-dimethylformamide at 100 ℃ to obtain polyurethane glue solution, then the non-woven tube blank is immersed in the polyurethane glue solution for 3 seconds and taken out, and then the non-woven tube blank is put into water for curing, taken out after 1min and dried to obtain the non-woven tube.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 2
A nonwoven fabric tube was produced in the same manner as in example 1, except that in step 2), a collecting roll having a diameter of 1cm and a length of 1m was used, the rotation speed of the collecting roll was 25 revolutions per minute, and the spinning was stopped after the thickness of the nonwoven fabric tube reached 3 mm.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 3
A nonwoven tube was produced in the same manner as in example 1, except that, in step 2), the electrostatic voltage was set to 10 kV.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 4
A nonwoven fabric tube was produced in the same manner as in example 1, except that, in step 2), the solution-feeding speed was 50mL/h and the reciprocation speed of the feed liquid container was 800 mm/min.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 5
The preparation was carried out according to the method of example 1, except that in step 1), 9g of polyacrylonitrile was dissolved in 51g N, N-dimethylformamide to obtain a polyacrylonitrile solution.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 6
A nonwoven tube was prepared by the method of example 1, except that in step 1), 3g of polyacrylonitrile was dissolved in 57g N, N-dimethylformamide to obtain a polyacrylonitrile solution.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 7
A nonwoven tube was prepared by the method of example 1, except that in step 1), 2.4g of polyethylene terephthalate was dissolved in 57.6g of m-cresol to give a polyethylene terephthalate solution.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 8
(1) 9g of polyvinyl alcohol were dissolved in 51g of water to give a polyvinyl alcohol solution, which was transferred to the feed vessel of the electrospinning device.
(2) Under the action of static voltage, the polyvinyl alcohol solution in the feed liquid container flies to the collecting roller through the circular hole component to form polymer fibers and gradually form a non-woven tube blank;
the parameters of electrostatic spinning are as follows: the aperture of the round hole component is 0.2mm, the air gap is 10cm, a collecting roller with the diameter of 2mm and the length of 1m is used, the rotating speed of the collecting roller is 300 r/min, the solution conveying speed is 1.5mL/h, the reciprocating speed of the feed liquid container is 600mm/min, and the static voltage is 5 kV.
And when the laser detects that the thickness of the non-woven tube blank reaches 0.5mm, stopping spinning, detaching the collecting roller and taking down the non-woven tube blank from one end.
(3) Immersing the non-woven tube blank into an aqueous solution containing 30g/L formaldehyde, 73.6g/L sulfuric acid and 60g/L sodium sulfate, reacting for 90min at 70 ℃, taking out, soaking in pure water for 3min, and taking out;
then, the adhesive treatment was carried out in the same manner as in example 1 to obtain a nonwoven tube.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Example 9
A nonwoven tube was produced in the same manner as in example 8, except that, in step 2), the solution-feeding speed was 1.5mL/h and the reciprocation speed of the feed liquid container was 1000 mm/min.
The mechanical strength, average fiber diameter and porosity of the nonwoven tubes are listed in table 1.
Comparative example 1
A nonwoven tube was prepared as in example 1, except that the electrostatic voltage was controlled to 50kV and the polymer formed a uniform polymer layer on the collector roll during spinning, and no nonwoven tube could be made.
Comparative example 2
A nonwoven tube was prepared according to the method of example 1, except that the rotation speed of the collecting roll was controlled to 500 rpm, and during the spinning process, the polymer nanofibers were mostly arranged in the circumferential direction, resulting in too low axial strength, which would disintegrate upon receiving axial stretching force, and thus a nonwoven tube could not be prepared.
TABLE 1
As can be seen from the results in Table 1, the polymer nonwoven tube prepared by the method of the present invention has good mechanical properties, and can meet the use requirements as a support material for tubular membranes and hollow fiber membranes; and the fiber diameter and the porosity are controllable, so that the method can be applied to the field of preparation of polymer separation membranes.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (9)
1. A process for preparing a polymeric nonwoven tube, the process employing an electrospinning apparatus;
the electrospinning device includes: the device comprises a feeding unit, an electrostatic generator, a collecting roller, a power mechanism, a first transmission device and a second transmission device; wherein, the first and the second end of the pipe are connected with each other,
the feeding unit comprises a feed liquid container and a circular hole member, the circular hole member is made of a conductive material, and the collecting roller is a cylinder with a conductive surface; the electrode of the electrostatic generator is connected with the circular hole component, and the surface of the collecting roller is grounded; under the action of the power mechanism, the collecting roller is driven by the first transmission device to rotate around the shaft of the collecting roller, and the feed liquid container is drawn by the second transmission device to do reciprocating linear motion along the direction parallel to the axis of the collecting roller;
the method comprises the following steps:
(1) under the action of static voltage, the polymer solution in the feed liquid container flies to the collecting roller through the circular hole component to form polymer fibers, and a nonwoven tube blank is gradually formed;
the static voltage is 1-30kV, and the rotating speed of the collecting roller is 10-300 r/min;
the feeding speed of the material liquid container is 1-10mL/h, and the reciprocating speed is 200-600 mm/min;
the minimum distance between the circular hole component and the surface of the collecting roller is 10-25 cm;
(2) carrying out post-treatment on the non-woven tube blank to obtain a polymer non-woven tube;
the polymer nonwoven pipe is used for the fields of tubular membranes and supporting materials of hollow fiber membranes and the preparation of polymer separation membranes.
2. The method of claim 1, wherein in the polymer solution, the polymer is selected from at least one of polyamide, polyurethane, polyvinyl alcohol, polyvinyl acetate, polyvinyl chloride, polyethylene terephthalate, polyacrylonitrile, and regenerated cellulose.
3. The method according to claim 1 or 2, wherein the polymer content in the polymer solution is 2-15 wt%.
4. The method according to claim 1 or 2, wherein the circular orifice member is provided on the feed liquid container in a convex manner; the feeding unit comprises a constant-speed propelling device and a piston arranged in the feed liquid container, and the piston is pushed by the constant-speed propelling device, so that the polymer solution is conveyed to the collecting roller through the circular hole component; or
The circular hole component is a conductive needle tube, the feeding unit comprises a constant flow pump, and the material liquid container, the constant flow pump and the conductive needle tube are sequentially connected through a pipeline.
5. A method according to claim 1 or 2, wherein the collecting roller has a length of 20-300cm and a diameter of 1-20 mm.
6. The method according to claim 1, wherein the electrospinning device further comprises a laser, a bracket provided with scale marks and a lifting device, wherein the bracket is positioned at one end of the collecting roller, the laser is arranged on the bracket and is adjustable up and down through the lifting device, and the laser beam direction of the laser is parallel to the axis of the collecting roller and is used for checking the thickness of the non-woven tube blank on the collecting roller in real time.
7. The method of claim 1, wherein in step (2), the post-processing comprises: and (3) carrying out gluing treatment on the non-woven tube blank by adopting an adhesive solution.
8. The method of claim 7, wherein the polymer in the polymer solution is polyvinyl alcohol; in the step (2), before the gluing process, the post-treatment further includes: and carrying out chemical reaction on the non-woven tube blank.
9. The method according to claim 7 or 8, wherein in step (2), the gluing process comprises: and soaking the non-woven tube blank in the adhesive solution for 1-10s, and drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025601.7A CN112709011B (en) | 2019-10-25 | 2019-10-25 | Process for making polymeric nonwoven tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025601.7A CN112709011B (en) | 2019-10-25 | 2019-10-25 | Process for making polymeric nonwoven tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112709011A CN112709011A (en) | 2021-04-27 |
| CN112709011B true CN112709011B (en) | 2022-07-12 |
Family
ID=75540936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911025601.7A Active CN112709011B (en) | 2019-10-25 | 2019-10-25 | Process for making polymeric nonwoven tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112709011B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101239281A (en) * | 2007-11-21 | 2008-08-13 | 天津大学 | Method for preparing nonwoven tube enhancement type polyvinylidene fluoride hollow fiber membrane |
| WO2012097229A2 (en) * | 2011-01-14 | 2012-07-19 | Neograft Technologies, Inc. | Apparatus for creating graft devices |
| CN106110396A (en) * | 2016-05-18 | 2016-11-16 | 江苏工程职业技术学院 | A kind of nerve trachea containing microchannel and oriented nanofibers and preparation method thereof |
| CN107190423A (en) * | 2017-06-13 | 2017-09-22 | 齐鲁工业大学 | A kind of electrospinning jet orientation plater and using orienting the technique that plater prepares macromolecule tubing |
| CN109563644A (en) * | 2016-04-21 | 2019-04-02 | 创新机械工程技术公司 | Electrostatic spinning apparatus and method |
-
2019
- 2019-10-25 CN CN201911025601.7A patent/CN112709011B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101239281A (en) * | 2007-11-21 | 2008-08-13 | 天津大学 | Method for preparing nonwoven tube enhancement type polyvinylidene fluoride hollow fiber membrane |
| WO2012097229A2 (en) * | 2011-01-14 | 2012-07-19 | Neograft Technologies, Inc. | Apparatus for creating graft devices |
| CN109563644A (en) * | 2016-04-21 | 2019-04-02 | 创新机械工程技术公司 | Electrostatic spinning apparatus and method |
| CN106110396A (en) * | 2016-05-18 | 2016-11-16 | 江苏工程职业技术学院 | A kind of nerve trachea containing microchannel and oriented nanofibers and preparation method thereof |
| CN107190423A (en) * | 2017-06-13 | 2017-09-22 | 齐鲁工业大学 | A kind of electrospinning jet orientation plater and using orienting the technique that plater prepares macromolecule tubing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112709011A (en) | 2021-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Robinson et al. | Comparative analysis of fiber alignment methods in electrospinning | |
| Alghoraibi et al. | Different methods for nanofiber design and fabrication | |
| JP5204493B2 (en) | Improved electrical blowing web forming method | |
| Wang et al. | Electro-spinning/netting: A strategy for the fabrication of three-dimensional polymer nano-fiber/nets | |
| JP5102631B2 (en) | Electric blowing web forming method | |
| JP2008506864A (en) | Improved electroblown web forming method | |
| WO2006129910A1 (en) | Procede de fabrication d’un filament continu par electro-filage et filament continu fabrique de cette maniere | |
| US20090294733A1 (en) | Process for improved electrospinning using a conductive web | |
| Molnár et al. | Electrospun composite nanofibers and polymer composites | |
| JP2008285793A (en) | Method for producing ultrafine fiber nonwoven fabric | |
| WO2016004457A1 (en) | Process for producing carbon nanofibre precursor yarn and carbon nanofibre yarn therefrom | |
| WO2018093657A1 (en) | Electrospinning of fluoropolymers | |
| CN112709011B (en) | Process for making polymeric nonwoven tubes | |
| KR20040052685A (en) | Electrospinning apparatus equipped with evacuated rotatable spinneret | |
| CN103911766A (en) | Trans-rubber fiber material, preparation method and applications thereof | |
| KR100658499B1 (en) | Method of manufacturing mats coated with nanofibers and mats manufactured thereby | |
| US11697892B2 (en) | Device and method for producing polymer fibers and its uses thereof | |
| KR20100070203A (en) | Making apparatus and method of fiber aggregate composed of nanofibers using vertical flow and centrifugal force | |
| CN115522319A (en) | Porous beaded PVDF (polyvinylidene fluoride) nanofiber and preparation method thereof | |
| CZ2011273A3 (en) | Method of nozzleless centrifugal production of nanofibers and microfibers on the surface of rotating cylinders and apparatus for making the same | |
| KR101853310B1 (en) | Manufacturing method for high dispersion fiber aggregate having expanded inter-fiber space and manufacturing apparatus for the same | |
| CN110359103B (en) | Method for preparing polymer micro-nanofiber based on stepping stretching method | |
| CN108950715B (en) | Carbon sphere/polyacrylonitrile fiber material and preparation method and application thereof | |
| Lingaiah et al. | Electrospinning of nylon-66 polymer nanofabrics | |
| CN111254508A (en) | Preparation method and preparation device of green high-strength melt jet spinning nanofiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |