CN115142192A - Wide-breadth nanofiber film and preparation method thereof - Google Patents
Wide-breadth nanofiber film and preparation method thereof Download PDFInfo
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- CN115142192A CN115142192A CN202110947191.2A CN202110947191A CN115142192A CN 115142192 A CN115142192 A CN 115142192A CN 202110947191 A CN202110947191 A CN 202110947191A CN 115142192 A CN115142192 A CN 115142192A
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- 239000002121 nanofiber Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 229920002635 polyurethane Polymers 0.000 claims abstract description 60
- 239000004814 polyurethane Substances 0.000 claims abstract description 60
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims description 36
- 239000012752 auxiliary agent Substances 0.000 claims description 27
- 239000012528 membrane Substances 0.000 claims description 27
- 238000009987 spinning Methods 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 5
- 229920003043 Cellulose fiber Polymers 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 claims description 2
- 239000003242 anti bacterial agent Substances 0.000 claims description 2
- 239000012876 carrier material Substances 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920004933 Terylene® Polymers 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000002120 nanofilm Substances 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 description 15
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 5
- 238000001523 electrospinning Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920006264 polyurethane film Polymers 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006306 polyurethane fiber Polymers 0.000 description 1
- 238000012430 stability testing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4358—Polyurethanes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
The invention relates to the technical field of electrostatic spinning, in particular to a wide-breadth nanofiber film and a preparation method thereof, wherein the wide-breadth nanofiber film is made of polyurethane, the breadth is less than or equal to 160cm, and the gram weight is 4-11g/m 2 The diameter of the fiber is 100-700nm. The application uses the electrostatic spinning technology to produce the waterproof breathable moisture-permeable film for the functional clothing, solves the worldwide problem of stably producing the nano film on a large scale, simultaneously the prepared 160cm nano fiber film has good uniformity, high water pressure resistance and high breathable moisture-permeable performance, and solves the problems of light weight and high water pressure resistance of the film for the clothingThe requirement of elasticity.
Description
Technical Field
The invention relates to the technical field of D04H1, in particular to a wide-breadth nanofiber film and a preparation method thereof.
Background
The electrostatic spinning technology is a special fiber manufacturing technology, CN201510574522 is prepared from a spinning solution, and then spinning is carried out under certain pressure and distance to obtain a polyurethane nanofiber, however, the stability of the polyurethane during electrospinning is poor, and particularly in the preparation process of wide-width fibers, the fibers are discontinuous, so that the use is limited; in addition, the water resistance, air permeability and moisture permeability of the obtained electrospun polyurethane fiber need to be improved. CN 20161003971 provides a polyurethane nanofiber film, which also has the problems of poor spinning stability, air permeability, moisture permeability, etc.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a wide-breadth nanofiber film in a first aspect, which is made of polyurethane, has the breadth of 150-160cm and the gram weight of 4-11g/m 2 The diameter of the fiber is 100-700nm.
Preferably, the width is 160cm.
Fig. 1 is a real object diagram of the wide-breadth nanofiber film in the present application, and fig. 2 is an electron microscope diagram of the wide-breadth nanofiber film in the present application.
The gram weight of the electric balance is obtained by weighing through an electronic balance of a BL-500S model.
The fiber diameter is obtained in this application by means of a Phenom pro model electron microscope.
In one embodiment, the polyurethane is selected from any one or more of HST-301, HST-304, HST-317.
The air permeability and moisture permeability of the nanofiber film obtained by the applicant after electrostatic spinning by using the currently commonly used polyurethane are poor, and in addition, the applicant has surprisingly found that when the polyurethane is selected from one or more of HST-301, HST-304 and HST-317, the air permeability and moisture permeability after the spinning in the application are good, probably because the molecules of the specific polyurethane in the application are distributed during the spinning, fibers with the diameter of 100-700nm can be obtained, and meanwhile, the fibers with the particle size are mutually staggered, so that dense network holes are formed in the obtained nanofiber film, and simultaneously, holes distributed in the fibers in the forward direction are also formed, so that air or water vapor forms a passage.
In one embodiment, the wide-door nanofiber film is prepared from 90-110 parts of polyurethane, 3-10 parts of auxiliaries and 60-80 parts of solvent by weight.
In a preferred embodiment, the raw materials for preparing the wide-breadth nanofiber film comprise 100 parts of polyurethane, 5 parts of auxiliary agent and 70 parts of solvent in parts by weight.
Preferably, the auxiliary agent is selected from one or more of an antibacterial agent, a leveling agent and a dispersing agent.
Further preferably, the auxiliary agent comprises a leveling agent.
Preferably, the leveling agent is an acrylate type leveling agent.
The acrylate leveling agent is purchased from HongRong trade Co., ltd., guangzhou, and has a trade mark of BYK-354.
In one embodiment, the solvent is N, N-dimethylformamide.
The second aspect of the present invention provides a method for preparing the wide-width nanofiber film, comprising: and mixing the polyurethane, the auxiliary agent and the solvent to obtain a spinning solution, and then carrying out electrostatic spinning, drying and stripping to obtain the polyurethane/solvent composite material.
In one embodiment, the method for preparing a wide-web nanofiber membrane comprises: mixing polyurethane, an auxiliary agent and a solvent to obtain a spinning solution, standing for 4-6h, then carrying out electrostatic spinning, drying and stripping to obtain the polyurethane/solvent composite material.
In a preferred embodiment, the method for preparing the wide-breadth nanofiber film comprises the following steps: and mixing polyurethane, an auxiliary agent and a solvent to obtain a spinning solution, standing for 5 hours, then performing electrostatic spinning, drying and stripping to obtain the polyurethane/solvent composite material.
In one embodiment, the electrospun film carrier is any one of paper, high-density nylon, and dacron scrim.
Preferably, the electrospun film carrier material is cellulose fibers.
The film carrier in this application has the ability to withstand certain high temperatures.
At present, when polyurethane is subjected to electrostatic spinning, the uniformity of a spinning film obtained by the polyurethane is poor, particularly when a film with the width of more than 150cm or even 1.6m is prepared, the uniformity of the thickness of a formed film is worse, and a polyurethane film with the width of 1.6m cannot be stably obtained, the applicant discovers unexpectedly in experiments that when the specific polyurethane component in the application is adopted, before electrostatic spinning, the thickness of a nanofiber film with the width of more than 150cm or even 1.6m, which is prepared when the spinning solution obtained at the moment is spun, is uniform, the practicability is strong, and the possible reason for the applicant is that after the specific polyurethane in the application is subjected to standing for a specific time, in the standing process, the soft and hard chain segments of the specific polyurethane molecules in the application are fully stretched or tangled in the auxiliary agent and solvent molecules in the application, the appropriate viscosity is obtained at the moment, in the spinning process, the viscosity is stable, the spinning solution can be uniformly sprayed around a spinning nozzle as a spinning nozzle, the uniform viscosity is stable under the action of an electric field, meanwhile, the center of the fiber in the application adheres to a specific wide and is balanced in a carrier, and the uniformity of the polyurethane film with the thickness of 1.6m is stably received, so that the uniformity of the polyurethane film with the high uniformity is less influence of the uniformity. Preferably, the drying temperature is 120-150 ℃; more preferably, the temperature of the drying is 135 ℃.
In the experiments, the applicant finds that the nanofiber film prepared by the application has unstable waterproof effect and has large difference between batches, and in addition, the applicant finds that the nanofiber film is dried at 120-150 ℃ after spinning into a film, at the moment, the waterproof performance of the products in the batches and between the batches is stable and almost has no difference, and the applicant considers that the possible reason is that the polyurethane obtained by spinning has water vapor carriers with a specific distribution structure, the water vapor carriers with specific sizes and specific shapes have proper distance, and after the polyurethane is dried at 120-150 ℃ in the application, the volatilization rates of the solvent or the auxiliary agent in the spinning film are proper and similar, so that the phenomenon that the water vapor carriers are communicated with each other due to the too high volatilization rate to cause the collapse of the water vapor carriers is avoided, the waterproof effect of the polyurethane film is unstable, and the later use effect is influenced due to the existence of the solvent or the cosolvent when the drying temperature is lower than the drying temperature in the application.
The applicant found that the elasticity of the resulting nanofiber film is better after the spinning solution is left to stand for 4 to 6 hours and dried at 120 to 150 ℃, and the applicant considered that it is possible that the specific three-dimensional network structure formed in the nanofiber film produced under such conditions gives better elasticity.
Preferably, the voltage of the electrostatic spinning is 40-50KV; more preferably, the voltage of the electrospinning is 45KV.
Applicants have unexpectedly found that using voltages in excess of 50KV, fires are prone to occur and that voltages that are too low affect the properties of the nanofiber film and the spinning efficiency.
The preparation method of the wide-width nanofiber membrane disclosed in the application is not disclosed, and can be selected by the person skilled in the art in a conventional way.
As shown in fig. 3, which is a schematic structural diagram of an electrospinning system in the present application, a film carrier 3 passes through an unwinding roller 1, a guide roller 2, a high-temperature calender roller 4, then passes through an industrial multi-nozzle high-voltage electrospinning device 5 to obtain a nanofiber film 6, and then passes through a low-temperature calender roller 7 and a winding roller 8 to obtain a nanofiber film to be dried.
Compared with the prior art, the invention has the following beneficial effects:
(1) When the applicant adopts polyurethane selected from one or more of HST-301, HST-304 and HST-317, the obtained nanofiber film has better air permeability and moisture permeability;
(2) In the preparation process of the nanofiber membrane, the spinning solution is firstly stood for 4-6 hours and then spun, so that the prepared nanofiber membrane with the width of more than 150cm, even 1.6m is uniform in thickness and high in practicability;
(3) The nanofiber membrane is dried at 120-150 ℃, and the waterproof performance of the product in batches and among batches is stable and almost has no difference;
(4) The waterproof air-permeable and moisture-permeable film for the functional clothes is produced by using the electrostatic spinning technology, the worldwide problem of large-scale stable production of the nano film is solved, and meanwhile, the 160cm nano fiber film prepared by the method is good in uniformity, has high water pressure resistance and high air-permeable and moisture-permeable performances, and meets the requirements of light weight and high elasticity of the film for the clothes.
Drawings
FIG. 1 is a schematic representation of a wide-width nanofiber membrane in accordance with the present application;
FIG. 2 is an electron microscope image of a wide-breadth nanofiber film in the present application;
FIG. 3 is a schematic diagram of the construction of an electrospinning system of the present application;
the method comprises the following steps of 1-unwinding roll, 2-guide roll, 3-film carrier, 4-high-temperature calender roll, 5-industrial multi-nozzle high-voltage electrostatic spinning equipment, 6-nanofiber film, 7-low-temperature calender roll and 8-winding roll.
Detailed Description
The present invention will be described below by way of specific embodiments, but is not limited to the specific examples given below.
Examples
Hereinafter, the present invention will be described in more detail by way of examples, but it should be understood that these examples are merely illustrative and not restrictive. The starting materials used in the examples which follow are all commercially available unless otherwise stated.
Example 1
The embodiment 1 of the invention provides a wide-breadth nanofiber membrane which is made of polyurethane, the breadth is 160nm, and the fiber diameter is 100-700nm.
The preparation raw materials of the wide-breadth nanofiber film comprise, by weight, 90 parts of polyurethane, 3 parts of an auxiliary agent and 60 parts of a solvent.
The polyurethane was purchased from Shanghaidi professor, inc. under the designation HST-301.
The auxiliary agent is an acrylate leveling agent, is purchased from HongRong trade company Limited in Guangzhou, and has the brand number of BYK-354.
The solvent is N, N-dimethylformamide.
The preparation method of the wide-breadth nanofiber film comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 4 hours, performing electrostatic spinning on paper under the condition of 40KV pressure, drying at 120 ℃, and stripping to obtain the polyurethane paper.
Example 2
Embodiment 2 of the invention provides a wide-breadth nanofiber film which is made of polyurethane, the breadth is 160nm, and the fiber diameter is 100-700nm.
The preparation raw materials of the wide-breadth nanofiber film comprise, by weight, 110 parts of polyurethane, 10 parts of an auxiliary agent and 80 parts of a solvent.
The polyurethane was purchased from Shanghaidi professor, inc. under the designation HST-304.
The auxiliary agent is an acrylate leveling agent, is purchased from Hongqing trade Limited company in Guangzhou city, and has a brand number of BYK-354.
The solvent is N, N-dimethylformamide.
The preparation method of the wide-breadth nanofiber membrane comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 6h, performing electrostatic spinning on paper under the condition of 50KV pressure, drying at 150 ℃, and stripping to obtain the polyurethane/solvent composite material.
Example 3
Embodiment 3 of the present invention provides a wide-width nanofiber membrane, which is made of polyurethane, and has a width of 160nm and a fiber diameter of 100-700nm.
The preparation raw materials of the wide-breadth nanofiber film comprise, by weight, 110 parts of polyurethane, 10 parts of an auxiliary agent and 80 parts of a solvent.
The polyurethane was purchased from Shanghaidi Seiki chemical Co., ltd under the designation HST-317.
The auxiliary agent is an acrylate leveling agent, is purchased from HongRong trade company Limited in Guangzhou, and has the brand number of BYK-354.
The solvent is N, N-dimethylformamide.
The preparation method of the wide-breadth nanofiber film comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 5h, performing electrostatic spinning on paper under the condition of pressure of 45KV, drying at 135 ℃, and stripping to obtain the polyurethane/solvent composite material.
The air permeability of the wide-breadth nanofiber film obtained by the application is 7mm/s by adopting GB/T5453, and the water pressure resistance of the wide-breadth nanofiber film is 7650mmH by adopting GB/T4744 test 2 O, the moisture permeability measured by GB/T12704.1 is 12542 g/square meter d, and the gram weight of the broad-width nanofiber film is 8g/m 2 。
Example 4
Example 4 of this example provides a wide-width nanofiber membrane, which is implemented in the same manner as example 3.
The preparation method of the wide-breadth nanofiber membrane comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, immediately performing electrostatic spinning on paper under the condition of 45KV pressure, drying at 135 ℃, and stripping to obtain the polyurethane/solvent electrostatic spinning paper.
Example 5
Example 5 of this example provides a wide-width nanofiber membrane, which is implemented in the same manner as example 3.
The preparation method of the wide-breadth nanofiber membrane comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 5h, performing electrostatic spinning on paper under the condition of pressure of 45KV, drying at 160 ℃, and stripping to obtain the polyurethane/solvent composite material.
Example 6
Example 6 of this example provides a wide-width nanofiber membrane, which is implemented in the same manner as example 3.
The preparation method of the wide-breadth nanofiber film comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 5h, performing electrostatic spinning on paper under the condition of pressure of 45KV, drying at 100 ℃, and stripping to obtain the polyurethane/solvent composite material.
Example 7
Example 7 of this example provides a wide-width nanofiber membrane, which is implemented in the same manner as example 3.
The preparation method of the wide-breadth nanofiber membrane comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 8 hours, performing electrostatic spinning on an aluminum foil under the condition that the pressure is 45KV, drying at 135 ℃, and stripping to obtain the polyurethane/aluminum alloy composite material.
Example 8
Example 8 of this example provides a wide-width nanofiber membrane, which is implemented in the same manner as example 3.
The preparation method of the wide-breadth nanofiber film comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 2 hours, performing electrostatic spinning on an aluminum foil under the condition that the pressure is 45KV, drying at 135 ℃, and stripping to obtain the polyurethane/aluminum alloy composite material.
Example 9
Example 9 of this example provides a wide-width nanofiber membrane, which is implemented in the same manner as example 3.
The preparation method of the wide-breadth nanofiber film comprises the following steps: mixing polyurethane, an auxiliary agent and a solvent, standing for 5h, performing electrostatic spinning on an aluminum foil under the condition of the pressure of 35KV, drying at 135 ℃, and stripping to obtain the polyurethane/aluminum alloy composite material.
Performance evaluation
1. And (3) testing air permeability: the air permeability of the wide-gauge nanofiber films obtained in examples 1-9 was tested using GB/T5453, where air permeability was reported as pass at 6-8mm/s and fail below 6 mm/s.
2. Film formation uniformity test: the thickness of the wide-breadth nanofiber films obtained in examples 1 to 9 was measured at 10 points, and the relative standard deviation of the thickness was recorded, and the relative standard deviation was recorded as excellent within 2wt%, otherwise, as poor.
3. And (3) stability testing: 50 samples are prepared according to the examples 1 to 9 respectively, the water pressure resistance test is carried out by GB/T4744, and the relative standard deviation of the water pressure resistance test results of the 50 samples of each example is recorded, wherein the relative standard deviation is less than or equal to 10 percent and is recorded as A grade, and the relative standard deviation is more than 10 percent and is recorded as B grade.
TABLE 1
Claims (10)
1. The wide-breadth nanofiber film is characterized by being made of polyurethane, having the breadth of 150-160cm and the gram weight of 4-11g/m 2 The diameter of the fiber is 100-700nm.
2. The wide-width nanofiber membrane according to claim 1, wherein the polyurethane is selected from any one or more of HST-301, HST-304, and HST-317.
3. The wide-breadth nanofiber film as claimed in claim 1, wherein the raw materials for preparing the wide-breadth nanofiber film comprise, by weight, 90-110 parts of polyurethane, 3-10 parts of an auxiliary agent, and 60-80 parts of a solvent.
4. The wide-width nanofiber film as claimed in claim 3, wherein the auxiliary agent is selected from one or more of an antibacterial agent, a leveling agent and a dispersing agent.
5. A method for preparing the wide-width nanofiber membrane as claimed in any one of claims 1 to 4, comprising: mixing polyurethane, an auxiliary agent and a solvent to obtain a spinning solution, and then carrying out electrostatic spinning, drying and stripping to obtain the polyurethane/polyurethane composite material.
6. The method for preparing the wide-width nanofiber membrane as claimed in claim 5, comprising the following steps: mixing polyurethane, an auxiliary agent and a solvent to obtain a spinning solution, standing for 4-6h, then carrying out electrostatic spinning, drying and stripping to obtain the polyurethane/solvent composite material.
7. The method for preparing the nanofiber membrane with the wide breadth according to claim 6, wherein the drying temperature is 120-150 ℃.
8. The method for preparing the nanofiber membrane with wide breadth according to claim 7, wherein the electrospun membrane carrier material is cellulose fiber.
9. The method for preparing the nanofiber membrane with wide breadth according to claim 7, wherein the electrospun membrane carrier is any one of paper, high-density nylon and terylene plain chemical fiber cloth.
10. The method for preparing the wide-width nanofiber membrane as claimed in any one of claims 5 to 9, wherein the voltage of the electrostatic spinning is 40-50KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947191.2A CN115142192A (en) | 2021-08-18 | 2021-08-18 | Wide-breadth nanofiber film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947191.2A CN115142192A (en) | 2021-08-18 | 2021-08-18 | Wide-breadth nanofiber film and preparation method thereof |
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| Publication Number | Publication Date |
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| CN115142192A true CN115142192A (en) | 2022-10-04 |
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