CN107723927B - TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with photochromic function and preparation method thereof - Google Patents
TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with photochromic function and preparation method thereof Download PDFInfo
- Publication number
- CN107723927B CN107723927B CN201711195226.1A CN201711195226A CN107723927B CN 107723927 B CN107723927 B CN 107723927B CN 201711195226 A CN201711195226 A CN 201711195226A CN 107723927 B CN107723927 B CN 107723927B
- Authority
- CN
- China
- Prior art keywords
- tpu
- photochromic
- fiber
- waterproof moisture
- film
- 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.)
- Expired - Fee Related
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
- 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
-
- 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
Abstract
The invention providesA TPU fiber-based waterproof moisture-permeable film with a photochromic function and a preparation method thereof, relating to the technical field of electrostatic spinning. The preparation method comprises the following steps: firstly, preparing a TPU/DMF substrate solution with a certain concentration; then adding photochromic microcapsule powder 1, 3-diphenyl-4- (3-chlorobenzoyl) -5-pyrazolone N (4) -phenylsemicarbazone (DP3ClBP-PSC) with stable photochromic performance and excellent fatigue resistance into the base solution, fully and uniformly stirring to obtain a spinning precursor solution, and standing and defoaming in a dark place; the nano-fiber membrane is prepared by adopting an air flow auxiliary electrostatic spinning technology, the contact angle of the obtained nano-fiber membrane is more than or equal to 130 degrees, the hydrostatic pressure resistance is more than or equal to 1kPa, and the moisture permeability is more than or equal to 19000g/m2And d, the strength is more than or equal to 20 MPa. The waterproof moisture-permeable film prepared by the invention has the characteristics of small aperture, high porosity, simple preparation process, lower cost and the like. The film can not only realize the conversion from colorless to colored under the irradiation of ultraviolet rays, but also has the advantages of reversible process, excellent waterproof, moisture permeable and air permeable performances and wide application prospect.
Description
Technical Field
The invention relates to the technical field of electrostatic spinning, in particular to a TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with a photochromic function and a preparation method thereof, and particularly relates to a TPU fiber-based waterproof moisture-permeable film with a photochromic function and a preparation method thereof, wherein the TPU fiber-based waterproof moisture-permeable film is prepared by adding photochromic microcapsule powder into a high polymer and blending.
Background
The waterproof moisture permeability is the basic performance of the protective fabric, which not only can prevent water drops/liquid drops from permeating into the fabric, but also can ensure that moisture/sweat can be diffused and transmitted to the outside through the fabric, so that the fabric has the breathing performance and keeps the wearing comfort.
The waterproof moisture-permeable film is a characteristic functional film integrating waterproof, moisture-permeable, air-permeable, windproof and warm-keeping performances, is also a core functional layer of waterproof moisture-permeable functional clothes, and requires a material with a smaller pore diameter (smaller than the molecular diameter of water drops and larger than the molecular diameter of water molecules) and a higher porosity. The waterproof and moisture permeable fabric has waterproof and moisture permeable functions, can meet the requirements of people on resisting severe weather such as rainstorm, severe cold and the like in outdoor environment, is also suitable for the fields of military use, medical use, special professional clothing and the like, and has wide development prospect. The main existing technology for manufacturing the waterproof moisture-permeable film has the problems of complex processing technology, high technical and equipment requirements, difficult regulation and control of pore structures and the like, so that the application and development of the waterproof moisture-permeable fabric are limited.
The electrostatic spinning technology utilizes a high-voltage electric field to enable a conductive fluid to form a jet flow, and finally a solvent is volatilized to enable the conductive fluid to be dried and solidified on a receiving device to form fibers, so that the method is an important method for preparing the nano-scale fibers. The electrostatic spinning nano-fiber has higher specific surface area and adsorption characteristic, is beneficial to the transfer of water vapor/moisture, and the film has the characteristics of higher isotropy, small aperture between fibers, high porosity, uniform distribution and the like. The technology can adjust the technological parameters according to the requirements of fabric products, obtain films with different pore structures and thicknesses, and has great application potential in the field of high-performance waterproof moisture-permeable film processing. The preparation method of the electrostatic spinning fiber-based waterproof moisture-permeable film comprises the following steps: an electrostatic spinning method of a fiber-based waterproof moisture-permeable membrane with high moisture-permeable flux and a device thereof (CN104452109B), a waterproof moisture-permeable composite membrane and a preparation method thereof (CN103963393A), a preparation method of a breathable waterproof polyurethane nanofiber membrane (CN102517794A), an electrostatic spinning method of an ultra-wear-resistant fiber-based waterproof moisture-permeable membrane and a device thereof (CN 104480639B), a preparation method of a waterproof moisture-permeable woven membrane, a waterproof moisture-permeable fabric and a preparation method thereof (CN103437072A), a high-efficiency waterproof moisture-permeable fabric and a preparation method thereof (CN102632648A), a waterproof moisture-permeable multifunctional composite micro/nano fabric and a preparation method thereof (CN103388265A) and the like.
Thermoplastic polyurethane elastomers ("TPU") are elastomeric synthetic resins with high tensile strength and good flexibility, and are mainly classified into polyester type and polyether type. The preparation process does not use solvent and has decomposability, thus being in line with the concept of green and environmental protection. The film made of TPU has the characteristics of wear resistance, good flexibility, high elasticity, excellent moisture permeability and excellent waterproof performance. The adhesive is widely applied to the aspects of daily necessities, toys, decorative materials and the like, and is particularly suitable for the field of processing and attaching textiles and ready-made clothes.
With the continuous development of science and technology, people pay high attention to the individuation and intellectualization of products. Therefore, the functional film is developed toward diversification and intellectualization of color, and the demand for coloring is also increasing.
The photochromic material refers to a compound that absorbs external electromagnetic waves in one or two directions to undergo reversible structural transformation between two states. The compound is converted from a configuration A to a configuration B after being excited by a certain wavelength of electromagnetic wave (hv), and the configuration B returns to the original state again under the radiation or heating of another electromagnetic wave (hv'). At present, the photochromic film is widely applied to base materials such as glass products, plastic products, ceramic products, textile fabrics and the like to prepare products such as artware, tableware, advertisement packaging materials, compact discs, photochromic functional clothing and the like. Many patents describe the preparation of functional films with excellent color change properties using different photochromic materials: a preparation method of a pyrazolone/titanic acid composite photochromic film (CN 104804721A), a spirooxazine or spiropyran reversible photochromic film doped with photoacid polymer, a preparation method and application thereof (CN 101311244B), a preparation method of a pyrazolone/gelatin-xanthan gum composite photochromic film (CN 103102693A), a preparation method of a polymer dispersed organic gel photochromic film (CN 103254453B), a preparation method of an organic-inorganic composite photochromic film material (CN1265211C) and the like.
The pyrazolone 1, 3-diphenyl-4- (3-chlorobenzoyl) -5-pyrazolone N (4) -phenyl semicarbazide (DP3ClBP-PSC) photochromic material is an organic functional material with photochromic performance in powder crystal or solution, and has potential application value in the fields of information storage, holographic anti-counterfeiting and the like. In order to develop the application of the material in the fields of high-performance waterproof moisture permeability and the like, the physical doping method is adopted, a certain amount of pyrazolone photochromic microcapsule powder is added into a TPU/DMF substrate solution, and the TPU fiber-based waterproof moisture permeable film with excellent performance and photochromic function is prepared by an electrostatic spinning technology. The application of the photochromic material in the solid state in the high-performance waterproof moisture-permeable field is realized, and the trend that the TPU functional film develops towards color diversification and intellectualization is reflected.
Disclosure of Invention
The invention aims to provide a preparation method of a TPU fiber-based waterproof moisture-permeable film with a photochromic function. The TPU fiber-based waterproof moisture-permeable film with the photochromic function is prepared by adding photochromic microcapsules into a TPU/DMF substrate solution and adopting an electrostatic spinning technology.
The invention also aims to provide a simpler preparation method, which reduces the cost.
The invention also aims to prepare the waterproof moisture-permeable functional clothes which are light, thin, good in photochromic effect and excellent in fatigue resistance by the method.
The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function is carried out according to the following scheme:
a. preparing a TPU/DMF base solution: mixing TPU particles and N, N-Dimethylformamide (DMF) according to the mass ratio of (1-3) to 10, stirring for 2-4 h under the water bath condition of 40-50 ℃, performing ultrasonic treatment for 10-20 min by using an ultrasonic instrument, and performing vacuum defoaming for 5-15 min by using a vacuum pump to obtain a TPU/DMF base solution.
b. Preparing a spinning precursor solution: the photochromic microcapsule powder 1, 3-diphenyl-4- (3-chlorobenzoyl) -5-pyrazolone N (4) -phenylsemicarbazone (DP3ClBP-PSC) with stable photochromic performance and excellent fatigue resistance is selected as a photochromic unit. Mixing photochromic microcapsule powder DP3ClBP-PSC and TPU/DMF base solution with the mass percentage of 30% according to the mass ratio of (1-5) to 10 by adopting a physical doping method under the dark condition, magnetically stirring for 3-5 hours at room temperature until the microcapsule powder is uniformly dispersed, and standing and defoaming in the dark condition to obtain the spinning precursor solution.
c. Preparing by an electrostatic spinning method: and c, injecting the spinning precursor solution obtained in the step b into a 5ml injector, connecting the injector with a needle head, placing the injector in portable electrostatic spinning equipment, and connecting the aluminum foil with the negative electrode of the high-voltage direct-current power supply. And (3) carrying out electrostatic spinning under the set spinning parameters, and accelerating the speed of polymer molecule solidification and fiber formation in the jet flow process by adopting an airflow auxiliary mode to obtain the electrostatic spinning nanofiber membrane.
d. And placing the collected nanofiber film in a room temperature environment, naturally drying for 24h, and removing residual solvent to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
2. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: in step a, TPU particles are mixed with DMF in a mass ratio of 3: 10.
3. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (b) stirring in the step a under the condition of a water bath at the temperature of 45 ℃ for 3 hours.
4. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (b) carrying out ultrasonic treatment for 15min by using an ultrasonic instrument in the step a.
5. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (b) performing vacuum defoaming for 10min by using a vacuum pump in the step a.
6. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and step b, mixing the photochromic microcapsule powder DP3ClBP-PSC and the TPU/DMF base solution according to the mass ratio of 1:10, 2:10, 3:10 and 4:10 respectively.
7. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: the stirring time in the step b is 4 h.
8. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (c) air flow assistance is realized by means of the internal structure design of the portable electrostatic spinning equipment, the size is 1-10 grade, the assistance direction is consistent with the jet flow direction, and the action range is the jet flow range from the electrostatic spinning nozzle to the receiving base material.
9. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: in the step c, the electrostatic spinning voltage is 18kV, the receiving distance is 23cm, the perfusion speed is 1.5ml/h, the ambient temperature is 26 +/-2 ℃, and the ambient humidity is 55% +/-5%.
10. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: the receiving substrate in step d may be aluminum foil, silicone oil paper, non-woven fabric, metal mesh or iron plate.
Drawings
FIG. 1 is a scanning electron micrograph of a film of the present invention
FIG. 2 is a diagram of the UV-visible spectrum of the film of the present invention before UV irradiation
FIG. 3 is a diagram of the UV-visible spectrum of the film of the present invention after UV irradiation
FIG. 4 is a moisture permeation flux chart of the film of the present invention
FIG. 5 is a graph of contact angle of a thin film according to the present invention
Detailed Description
In order to make the objects, technical solutions and features of the present invention more apparent to those skilled in the relevant art, the present invention will be described in detail by specifically referring to the embodiments. It should be understood by those skilled in the art that the described embodiments are only for the understanding of the present invention and are not intended to limit the present invention.
Example 1
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 70％
Preparing a spinning precursor solution: weighing 6g of TPU particles at room temperature, adding the TPU particles into 14g of DMF, heating and stirring in a water bath at 45 ℃ for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%.
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 40 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 20um +/-2 um. Then, drying for 24 hours in the dark to obtain the TPU fiber base
A water vapor permeable film.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 131.8 degrees, the water pressure resistance is 12.7kPa, and the moisture-permeable flux is 14437g/m2/d。
Example 2
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 70％
Preparing a spinning precursor solution: weighing 6g of TPU particles at room temperature, adding the TPU particles into 14g of DMF, heating and stirring in a water bath at 45 ℃ for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%.
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 80 min. And (3) accelerating the speed of curing and fiber forming of polymer molecules in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 30um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film.
The effect of the embodiment is as follows: the obtained TPU fiber-based waterproof moisture-permeable film has a contact angle of 132.3 degrees, a water pressure resistance of 18kPa and a moisture-permeable flux of 14777g/m2/d。
Example 3
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 70％
Preparing a spinning precursor solution: weighing 6g of TPU particles at room temperature, adding the TPU particles into 14g of DMF, heating and stirring in a water bath at 45 ℃ for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%.
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 120 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 40um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film.
The effect of the embodiment is as follows: the obtained TPU fiber-based waterproof moisture-permeable film has a contact angle of 132.5 degrees, a water pressure resistance of 28kPa and a moisture-permeable flux of 13673g/m2/d。
Example 4
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 69％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.8g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.2g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 40 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 20um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 132.1 degrees, the water pressure resistance is 9kPa, and the moisture-permeable flux is 13079g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 5
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 69％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.8g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.2g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 80 min. And (3) accelerating the speed of curing and fiber forming of polymer molecules in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 30um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 132.0 degrees, the water pressure resistance is 16.2kPa, and the moisture-permeable flux is 17070g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 6
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 69％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.8g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.2g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 120 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 40um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable membrane is 131.9 degrees, the water pressure resistance is 20.7kPa, and the moisture-permeable flux is 14183g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 7
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 68％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.6g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.4g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 40 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 20um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 134.3 degrees, the water pressure resistance is 12kPa, and the moisture-permeable flux is 12994g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 8
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 68％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.6g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.4g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 80 min. And (3) accelerating the speed of curing and fiber forming of polymer molecules in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 30um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable membrane is 133.8 degrees, the water pressure resistance is 15kPa, and the moisture-permeable flux is 13503g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 9
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 68％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.6g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.4g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 120 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 40um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable membrane is 134.8 degrees, the water pressure resistance is 14.9kPa, and the moisture-permeable flux is 14183g/m2And d. The composite film has good photosensitivity
Color property, after 365nm ultraviolet light irradiation, the film changes from white to orange.
Example 10
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 40 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 20um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 135.5 degrees, the water pressure resistance is 10kPa, and the moisture-permeable flux is 19278g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 11
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 80 min. And (3) accelerating the speed of curing and fiber forming of polymer molecules in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 30um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 134.7 degrees, the water pressure resistance is 12.7kPa, and the moisture-permeable flux is 14862g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 12
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 120 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 40um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 136.6 degrees, the water pressure resistance is 15.3kPa, and the moisture-permeable flux is 15711g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 13
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 66％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.2g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.8g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 40 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 20um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 132.8 degrees, the water pressure resistance is 10.8kPa, and the moisture-permeable flux is 12824g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 14
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 66％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.2g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.8g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 80 min. And (3) accelerating the speed of curing and fiber forming of polymer molecules in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 30um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 133.1 degrees, the water pressure resistance is 11.8kPa, and the moisture-permeable flux is 14098g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 15
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 66％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.2g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.8g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 120 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 40um +/-2 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 133.8 degrees, the water pressure resistance is 13.8kPa, and the moisture-permeable flux is 16645g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to orange after being irradiated by 365nm ultraviolet light.
Example 16
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 40 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 20.4 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 131.3 degrees, the water pressure resistance is 10.4kPa, and the moisture-permeable flux is 12739g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to red after being irradiated by 365nm ultraviolet light.
Example 17
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 80 min. And accelerating the speed of curing and fiber forming of polymer molecules in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 27.8 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 135.7 degrees, the water pressure resistance is 13.6kPa, and the moisture-permeable flux is 12314g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to yellow after being irradiated by 365nm ultraviolet light.
Example 18
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 120 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 37.6 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 136.1 degrees, the water pressure resistance is 15.7kPa, and the moisture-permeable flux is 12569g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to blue after being irradiated by 365nm ultraviolet light.
Example 19
An electrostatic spinning method of a photochromic fiber-based waterproof moisture-permeable film comprises the following specific steps:
the components by mass percentage are as follows: TPU 30%
DMF 67％
Preparing a spinning precursor solution: weighing 6g of TPU particles, adding the TPU particles into 13.4g of DMF at room temperature, heating in a water bath at 45 ℃ and stirring for 3h, carrying out ultrasonic treatment for 15min, and carrying out vacuum deaeration for 10min to obtain a TPU/DMF solution with the concentration of 30%. Then, 0.6g of photochromic microcapsule DP3ClBP-PSC white powder is slowly added into the clear solution in a dark condition, stirred for 4 hours at normal temperature to be uniformly dispersed in the solution, and kept stand for defoaming to obtain a spinning precursor solution (blended suspension).
Preparing a film: the spinning precursor solution is respectively injected into four injectors with the specification of 5ml, the injectors are connected with needles and placed in portable electrostatic spinning equipment, and aluminum foil is used as a receiving base material and connected with the negative electrode of a high-voltage direct-current power supply. In the spinning process, the voltage is set to be 18kV, the perfusion speed is 1.5ml/h, the receiving distance is 23cm, the ambient temperature is 26 +/-2 ℃, the humidity is 55% +/-5%, and the spinning time is set to be 25 min. And accelerating the speed of curing polymer molecules into fibers in the jet flow process by adopting an airflow auxiliary mode to prepare the electrostatic spinning nanofiber film with the thickness of 14.8 um. And then, drying for 24 hours in a dark place to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
The effect of the embodiment is as follows: the contact angle of the obtained TPU fiber-based waterproof moisture-permeable film is 135.9 degrees, the water pressure resistance is 9.8kPa, and the moisture-permeable flux is 12909g/m2And d. The composite film has good photosensitive color-changing performance, and the film is changed from white to purple after being irradiated by 365nm ultraviolet light。
The present invention has been described in terms of the embodiments, but the embodiments are not intended to limit the invention, and are merely illustrative of the technical concepts and features of the invention. It is intended that all equivalent alterations and modifications made in accordance with the spirit of the invention be covered by the protection scope of the invention.
Claims (10)
1. A preparation method of a TPU fiber-based waterproof moisture-permeable film with a photochromic function is characterized by adopting an electrostatic spinning technology for preparation, and is realized by the following steps:
a. preparing a TPU/DMF base solution: mixing TPU particles and N, N-Dimethylformamide (DMF) according to the mass ratio of (1-3) to 10, stirring for 2-4 h under the water bath condition of 40-50 ℃, performing ultrasonic treatment for 10-20 min by using an ultrasonic instrument, and performing vacuum defoaming for 5-15 min by using a vacuum pump to obtain a TPU/DMF base solution;
b. preparing a spinning precursor solution: selecting photochromic microcapsule powder 1, 3-diphenyl-4- (3-chlorobenzoyl) -5-pyrazolone N (4) -phenylsemicarbazone (DP3ClBP-PSC) with stable photochromic performance and excellent fatigue resistance as a photochromic unit; mixing photochromic microcapsule powder DP3ClBP-PSC and TPU/DMF base solution with the mass percentage of 30% according to the mass ratio of (1-5) to (10) by adopting a physical doping method under the dark condition, magnetically stirring for 3-5 hours at room temperature until the microcapsule powder is uniformly dispersed, and standing and defoaming in the dark condition to obtain spinning precursor solution;
c. preparing by an electrostatic spinning method: b, injecting the spinning precursor solution obtained in the step b into a 5ml injector, connecting the injector with a needle head, placing the injector in portable electrostatic spinning equipment, and connecting an aluminum foil with the negative electrode of a high-voltage direct-current power supply; carrying out electrostatic spinning under set spinning parameters, and accelerating the speed of polymer molecule solidification and fiber formation in the jet flow process by adopting an airflow auxiliary mode to obtain an electrostatic spinning nanofiber film;
d. and placing the collected nanofiber film in a room temperature environment, naturally drying for 24h, and removing residual solvent to obtain the TPU fiber-based waterproof moisture-permeable film with the photochromic function.
2. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: in step a, TPU particles are mixed with DMF in a mass ratio of 3: 10.
3. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (b) stirring in the step a under the condition of a water bath at the temperature of 45 ℃ for 3 hours.
4. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (b) carrying out ultrasonic treatment for 15min by using an ultrasonic instrument in the step a.
5. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (b) performing vacuum defoaming for 10min by using a vacuum pump in the step a.
6. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and step b, mixing the photochromic microcapsule powder DP3ClBP-PSC and the TPU/DMF base solution according to the mass ratio of 1:10, 2:10, 3:10 and 4:10 respectively.
7. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: the stirring time in the step b is 4 h.
8. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: and (c) air flow assistance is realized by means of the internal structure design of the portable electrostatic spinning equipment, the size is 1-10 grade, the assistance direction is consistent with the jet flow direction, and the action range is the jet flow range from the electrostatic spinning nozzle to the receiving base material.
9. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: in the step c, the electrostatic spinning voltage is 18kV, the receiving distance is 23cm, the perfusion speed is 1.5ml/h, the ambient temperature is 26 +/-2 ℃, and the ambient humidity is 55% +/-5%.
10. The preparation method of the TPU fiber-based waterproof moisture-permeable film with the photochromic function according to claim 1, which is characterized in that: in the step d, the receiving base material is aluminum foil, silicone oil paper, non-woven fabric, metal mesh or iron plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195226.1A CN107723927B (en) | 2017-11-24 | 2017-11-24 | TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with photochromic function and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711195226.1A CN107723927B (en) | 2017-11-24 | 2017-11-24 | TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with photochromic function and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107723927A CN107723927A (en) | 2018-02-23 |
| CN107723927B true CN107723927B (en) | 2020-03-24 |
Family
ID=61219327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711195226.1A Expired - Fee Related CN107723927B (en) | 2017-11-24 | 2017-11-24 | TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with photochromic function and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107723927B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205749B (en) * | 2019-05-25 | 2022-04-08 | 浙江佳海新材料有限公司 | Production process of nanofiber composite filter paper |
| CN110983456A (en) * | 2019-11-21 | 2020-04-10 | 上海纷然科技有限公司 | Preparation method of composite structure colored nanofiber membrane |
| CN112575444A (en) * | 2020-11-23 | 2021-03-30 | 南通纺织丝绸产业技术研究院 | High-protection high-moisture-permeability nanofiber membrane and preparation of medical protective equipment thereof |
| CN112962213A (en) * | 2021-02-01 | 2021-06-15 | 陕西科技大学 | Bi2Ti4O11Preparation method and application of Yb and Er up-conversion luminescence anti-counterfeiting film |
| CN115787298A (en) * | 2022-12-01 | 2023-03-14 | 天津日津科技股份有限公司 | Black hydrophobic and oleophobic waterproof breathable film and preparation method thereof |
| CN116497602A (en) * | 2023-04-28 | 2023-07-28 | 江苏鸿鹏服饰有限公司 | Moisture-permeable and easily-dried sleeping bag fabric and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101437663A (en) * | 2004-11-09 | 2009-05-20 | 得克萨斯大学体系董事会 | Fabrication and application of nanofiber ribbons and sheets and twisted and non-twisted nanofiber yarns |
| CN101724981A (en) * | 2009-11-05 | 2010-06-09 | 南京大学 | Method for preparing multi-wall carbon nano-tube loaded thermoplastic polyurethane film |
| CN102867887A (en) * | 2012-10-17 | 2013-01-09 | 青岛大学 | Method for preparing titanium dioxide nanofiber ultraviolet light dependent resistor |
| CN103194858A (en) * | 2013-04-23 | 2013-07-10 | 北京化工大学 | Elastomer composite with high dielectric constant and low dielectric loss and preparation method thereof |
| CZ304123B6 (en) * | 2012-10-17 | 2013-11-06 | Spur A.S. | Photoactive nanofibrous structure with antimicrobial properties and process for preparing thereof |
-
2017
- 2017-11-24 CN CN201711195226.1A patent/CN107723927B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101437663A (en) * | 2004-11-09 | 2009-05-20 | 得克萨斯大学体系董事会 | Fabrication and application of nanofiber ribbons and sheets and twisted and non-twisted nanofiber yarns |
| CN101724981A (en) * | 2009-11-05 | 2010-06-09 | 南京大学 | Method for preparing multi-wall carbon nano-tube loaded thermoplastic polyurethane film |
| CN102867887A (en) * | 2012-10-17 | 2013-01-09 | 青岛大学 | Method for preparing titanium dioxide nanofiber ultraviolet light dependent resistor |
| CZ304123B6 (en) * | 2012-10-17 | 2013-11-06 | Spur A.S. | Photoactive nanofibrous structure with antimicrobial properties and process for preparing thereof |
| CN103194858A (en) * | 2013-04-23 | 2013-07-10 | 北京化工大学 | Elastomer composite with high dielectric constant and low dielectric loss and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107723927A (en) | 2018-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107723927B (en) | TPU (thermoplastic polyurethane) fiber-based waterproof moisture-permeable film with photochromic function and preparation method thereof | |
| CN110389464B (en) | Electrochromic/deformable film for electric heating and preparation method thereof | |
| CN110820344B (en) | Thermochromic transparent film and preparation method and application thereof | |
| Xue et al. | Bioinspired MXene-based soft actuators exhibiting angle-independent structural color | |
| CN104262967B (en) | Sensitive material used in pressure sensor and preparation method thereof | |
| CN110258021A (en) | A kind of high waterproof height is breathed freely nano fibrous membrane and preparation method thereof | |
| CN106183211B (en) | One kind electromagnetic shielding compound fabric and its preparation and application | |
| CN106956486A (en) | Thermal isolation film with high ultraviolet-resistant performance and preparation method thereof | |
| KR20090128097A (en) | Method of manufacturing water-proof and moisture-permeable fabric comprising nano fiber web | |
| CN111593492B (en) | Method for preparing liquid crystal display backlight film based on high-strength nanofiber film | |
| CN107761401A (en) | A kind of thermal-insulating waterproof antibiotic multifunction cloth and its preparation method and application | |
| CN203305615U (en) | Waterproof ventilated compound fabric | |
| Gan et al. | UV-filtering cellulose nanocrystal/carbon quantum dot composite films for light conversion in glass windows | |
| CN109137535A (en) | A kind of preparation method for adding china-hemp fibers powder-nano material heat insulation and heat control type wear-resistant uvioresistant line umbrella cloth | |
| CN102898652B (en) | Organic/inorganic nanometer function particle modified organosilicon fabric coating agent preparation method | |
| WO2021022777A1 (en) | Nano composite thin film having infrared absorption function, and manufacturing method therefor and application thereof | |
| CN106832306B (en) | Polysiloxane and preparation system thereof, polysiloxane-polyurethane-titanium dioxide mixed coating and application of coating | |
| CN109331754B (en) | Blue-light-proof nano composite microsphere, blue-light-proof optical resin material and preparation method thereof | |
| CN211311787U (en) | High waterproof high ventilative nanofiber membrane | |
| CN112301550A (en) | Environment-friendly self-cleaning composite nanofiber filtering membrane and preparation method thereof | |
| CN110819070B (en) | Patterned photochromic transparent film and preparation method thereof | |
| CN108357170B (en) | Polyethylene umbrella adhesive tape capable of insulating heat and ultraviolet rays and preparation method thereof | |
| CN210478027U (en) | Waterproof breathable fabric | |
| CN114134702A (en) | Preparation method of fluorine-free electrostatic spinning waterproof moisture-permeable membrane based on sulfenyl-alkene photochemical reaction | |
| CN219903700U (en) | Waterproof composite fabric |
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 | ||
| CB02 | Change of applicant information |
Address after: 266071 Shandong city of Qingdao province Ningxia City Road No. 308 Applicant after: QINGDAO University Address before: 266071 Ningxia Road, Shandong, China, No. 308, No. Applicant before: QINGDAO University |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 Termination date: 20211124 |