Ionic power generation fabric capable of collecting multi-mode wetting energy

Abstract

The invention relates to the field of fabrics, and discloses an ionic power generation fabric capable of collecting multi-mode wetting energy. Comprising the following raw materials in parts by weight: a temperature-responsive zwitterionic monomer with the mass percent concentration of 10-50%, a cross-linking agent which accounts for 0.5-3% of the mole number of the temperature-responsive zwitterionic monomer, an initiator which accounts for 1-6% of the mole number of the temperature-responsive zwitterionic monomer, and an initiator which accounts for 1-6% of the mole number of the temperature-responsive zwitterionic monomer, the fabric disclosed by the invention can be simply prepared through a traditional spinning and twisting process, has the characteristics of low cost and high environmental adaptability, and is suitable for large-scale production.

Description

Technical Field

[0001] The present invention relates to the field of fabrics, and specifically to an ionic power - generating fabric for multi - modal wetting energy harvesting. Background Technique

[0002] In the research on ionic yarns for wetting - energy power generation for multi - modal energy harvesting, ion concentration gradients, temperature fluctuations, and mechanical deformations often occur simultaneously and are difficult to handle in isolation. The multi - energy micro - environment consists of three elements: solution medium, thermal - field distribution, and mechanical load, and there are complex energy coupling effects among the elements. Current research mainly focuses on the design of conversion mechanisms for a single stimulus source (such as humidity or temperature), and rarely takes into account the synergistic effects of multiple physical fields, resulting in the energy capture process being difficult to dynamically adapt to the real - time changes of environmental parameters. For example, although existing moisture - absorbing power - generating fibers can achieve humidity response through a core - shell structure, they lack regulation of the ion migration effect caused by temperature gradients; some thermosensitive materials can sense temperature changes but cannot simultaneously capture the piezoelectric potential energy generated by mechanical deformations. This fragmented design limits the power - generation efficiency due to the singularity of environmental parameters and cannot achieve adaptive optimization of energy output in the face of complex energy scenarios, severely restricting its application potential in wearable devices and smart textiles. Therefore, the present invention proposes an ionic power - generating fabric for multi - modal wetting energy harvesting. Summary of the Invention

[0003] The purpose of the present invention is to provide an ionic power - generating fabric for multi - modal wetting energy harvesting to solve the problems raised in the above - mentioned background technique.

[0004] To achieve the above - mentioned purpose, the present invention provides the following technical solution: An ionic power - generating fabric for multi - modal wetting energy harvesting, comprising raw materials in the following parts by weight:

[0005] A temperature - responsive zwitterionic monomer with a mass - percentage concentration of 10% - 50%, a cross - linker of 0.5% - 3% of the molar amount of the temperature - responsive zwitterionic monomer, an initiator of 1% - 6% of the molar amount of the temperature - responsive zwitterionic monomer, and a conductive polymer of 150% of the mass of the temperature - responsive zwitterionic monomer.

[0006] Preferably, the preparation method of the fabric includes: Step 1, perform overall pretreatment on the yarn and fabric, and immerse the yarn and fabric in a mixed solution with a pH of 3 - 4 composed of acetic acid, deionized water, and a siloxane coupling agent;

[0007] Step 2, under vacuum conditions, heat - bake the yarn and fabric at a temperature of 100 - 105 °C for 2 - 4 h to obtain pretreated yarn and fabric;

[0008] Step 3, immerse the pretreated yarn and fabric in a conductive polymer solution for 2 - 10 min, and dry at 60 - 90 °C to obtain conductive yarn and fabric;

[0009] Step 4: Immerse the conductive yarn and the fabric in a temperature-responsive zwitterionic monomer solution system to obtain an ionic yarn and fabric capable of generating electricity upon wetting.

[0010] Step 5: Pre-dry the conductive yarn and the fabric at a temperature of 70 - 120°C for 1 - 3 minutes; place the pre-dried conductive yarn and fabric in an ultraviolet chamber for in-situ photoinitiated polymerization and crosslinking reaction, where the wavelength of the ultraviolet lamp is 365 nm, the ultraviolet irradiation power is 200 - 400 W, and the ultraviolet irradiation time is 2 - 5 minutes. Place the yarn and fabric after ultraviolet irradiation in absolute ethanol for 2 - 10 minutes and then air-dry naturally to obtain the ionic yarn and fabric capable of generating electricity upon wetting.

[0011] Preferably: The siloxane coupling agent is 3-(trimethoxysilyl)propyl methacrylate (TMSPMA); the yarn and fabric are one of cotton yarn fabric, viscose fiber, and regenerated cellulose fiber; in Step 1, the hydroxyl groups on the yarn and fabric react with the siloxane coupling agent in the mixed solution at 60 - 90°C to introduce carbon-carbon double bonds onto the yarn and fabric.

[0012] Preferably: The conductive polymer solution is one or a combination of poly(3,4-ethylenedioxythiophene) (PEDOT): polystyrene sulfonate (PSS), polyaniline, polypyrrole, polythiophene, and their derivatives.

[0013] Preferably: The temperature-responsive zwitterionic monomer solution system includes a temperature-responsive zwitterionic monomer, a crosslinking agent, an initiator, and a solvent. The mass percentage concentration of the temperature-responsive zwitterionic monomer is 10% - 50%, the dosage of the crosslinking agent is 0.5% - 3% of the molar amount of the temperature-responsive zwitterionic monomer, the dosage of the initiator is 1% - 6% of the molar amount of the temperature-responsive zwitterionic monomer, and the dosage of the conductive polymer is 150% of the mass of the temperature-responsive zwitterionic monomer.

[0014] Preferably: The temperature-responsive zwitterionic monomer is one or a combination of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide, 2-methyl-2-acryloyloxyethyl phosphorylcholine, and carboxybetaine methacrylate.

[0015] Preferably: The crosslinking agent is one of ethylene glycol dimethacrylate or N,N'-methylenebisacrylamide, the initiator is one of 2,2-diethoxyacetophenone or 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone, and the solvent is one of absolute ethanol or trifluoroethanol.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] 1. By quantitatively analyzing the energy coupling mechanisms of different stimuli (such as ionic solutions, temperature gradients, mechanical strains, etc.), the charge transport paths and interfacial polarization characteristics of the fibers are precisely designed, breaking through the limitations of a single energy harvesting mode;

[0018] 2. It can be easily prepared by traditional spinning and twisting processes, featuring low cost and strong environmental adaptability, and is suitable for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figures 1 - 3 It is a flowchart of the fabric preparation method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 3 , the ionic power generation fabric for multimodal wetting energy harvesting in the illustration includes the following raw materials by weight: a temperature-responsive zwitterionic monomer with a mass percentage concentration of 10% - 50%, a cross-linking agent of 0.5% - 3% of the molar amount of the temperature-responsive zwitterionic monomer, an initiator of 1% - 6% of the molar amount of the temperature-responsive zwitterionic monomer, and a conductive polymer of 150% of the mass of the temperature-responsive zwitterionic monomer.

[0022] In this embodiment, the fabric preparation method includes Step 1, performing overall pretreatment on the yarn and fabric, and impregnating the yarn and fabric in a mixed solution with a pH of 3 - 4 composed of acetic acid, deionized water, and a siloxane coupling agent;

[0023] Step 2, under vacuum conditions, heating and baking the yarn and fabric at a temperature of 100 - 105 °C for 2 - 4 h to obtain pretreated yarn and fabric;

[0024] Step 3, impregnating the pretreated yarn and fabric in a conductive polymer solution for 2 - 10 min, and drying at 60 - 90 °C to obtain conductive yarn and fabric;

[0025] Step 4, impregnating the conductive yarn and fabric in a temperature-responsive zwitterionic monomer solution system to obtain ionic yarn and fabric for wetting energy power generation;

[0026] Step 5: Pre-dry the conductive yarn and fabric at a temperature of 70 - 120°C for 1 - 3 min; place the pre-dried conductive yarn and fabric in an ultraviolet chamber for in-situ photoinitiated polymerization and crosslinking reaction, where the wavelength of the ultraviolet lamp is 365 nm, the ultraviolet irradiation power is 200 - 400 W, and the ultraviolet irradiation time is 2 - 5 min. Place the yarn and fabric after ultraviolet irradiation in absolute ethanol for 2 - 10 min and then air-dry naturally to obtain the ionic yarn and fabric for wetting energy generation.

[0027] Further, the siloxane coupling agent is 3-(trimethoxysilyl)propyl methacrylate (TMSPMA); the yarn and fabric are one of cotton yarn fabric, viscose fiber, and regenerated cellulose fiber; in Step 1, the hydroxyl groups on the yarn and fabric react with the siloxane coupling agent in the mixed solution at 60 - 90°C to introduce carbon-carbon double bonds onto the yarn and fabric. The conductive polymer solution is one or a combination of more than one of PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (polystyrene sulfonate), polyaniline, polypyrrole, polythiophene, and their derivatives. The temperature-responsive zwitterionic monomer solution system includes a temperature-responsive zwitterionic monomer, a crosslinking agent, an initiator, and a solvent. The mass percentage concentration of the temperature-responsive zwitterionic monomer is 10% - 50%, the dosage of the crosslinking agent is 0.5% - 3% of the molar amount of the temperature-responsive zwitterionic monomer, the dosage of the initiator is 1% - 6% of the molar amount of the temperature-responsive zwitterionic monomer, the dosage of the conductive polymer is 150% of the mass of the temperature-responsive zwitterionic monomer. The temperature-responsive zwitterionic monomer is one or a combination of more than one of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide, 2-methyl-2-acryloyloxyethyl phosphorylcholine, and carboxybetaine methacrylate. The crosslinking agent is one of ethylene glycol dimethacrylate or N,N′-methylenebisacrylamide. The initiator is one of 2,2-diethoxyacetophenone or 2-hydroxy-4′-(2-hydroxyethoxy)-2-methylpropiophenone. The solvent is one of absolute ethanol or trifluoroethanol.

[0028] Example 1

[0029] For the yarn prepared by the method of the present invention, when 0.5 ml - 2 ml of NaCl solution is dropped onto a 15 - cm long single - strand power - generating ionic yarn, the yarn can generate a voltage of about 550 mV - 650 mV and last for 120 min - 180 min; when 0.5 ml - 2 ml of KCl solution is dropped onto a 15 - cm long single - strand power - generating ionic yarn, the yarn can generate a voltage of about 570 mV - 670 mV and last for 120 min - 180 min; when 0.5 ml - 2 ml of 1% NaCl and KCl mixed solution is dropped onto a 10 - cm long single - strand power - generating ionic yarn, the yarn can generate a voltage of about 450 mV - 550 mV and last for 120 min - 180 min; when 0.5 ml - 2 ml of 1% NaCl and KCl mixed solution is dropped onto a 15 - cm long single - strand power - generating ionic yarn, the yarn can generate a voltage of about 620 mV - 720 mV and last for 120 min - 180 min; when 0.5 ml - 2 ml of CaCl2 solution is dropped onto a 15 - cm long single - strand power - generating ionic yarn, the yarn can generate a voltage of about 580 mV - 680 mV and last for 120 min - 180 min; when 0.5 ml - 2 ml of FeCl3 solution is dropped onto a 15 - cm long single - strand power - generating ionic yarn, the yarn can generate a voltage of about 510 mV - 610 mV and last for 120 min - 180 min.

[0030] Instantly when 0.2 ml - 2 ml of cold water is dropped, a 15 - cm long single - strand power - generating ionic yarn can generate a voltage of about 250 mV - 350 mV; instantly when 1% NaCl and KCl mixed solution at 25°C is dropped, a 15 - cm long single - strand power - generating ionic yarn can generate a voltage of about 630 mV - 730 mV. Instantly when hot water is dropped, a 15 - cm long single - strand power - generating ionic yarn can generate a voltage of 390 mV - 490 mV; instantly when 1% NaCl and KCl mixed solution at 45°C is dropped, a 15 - cm long single - strand power - generating ionic yarn can generate a voltage of about 680 mV - 780 mV.

[0031] In addition, instantly in a humid - heat environment, a 15 - cm long single - strand power - generating ionic yarn can generate a voltage of about 100 mV - 150 mV. When humid - heat air is continuously introduced, the yarn can generate a voltage of about 250 mV - 350 mV and last for 60 min - 120 min.

[0032] Example 2

[0033] When a 0.5 ml - 2 ml mixed solution of 1% NaCl and KCl is dropped onto a 15-cm-long single-strand power-generating ionic yarn prepared by the method of the present invention, the yarn can generate a voltage of 550 mV - 650 mV and a current of 5 μA - 10 μA; when 4 15-cm-long yarns are connected in series, the voltage of the power-generating ionic yarn can rise to about 1300 mV - 1400 mV; when 4 15-cm-long yarns are connected in parallel, the current of the power-generating ionic yarn can rise to 20 μA - 25 μA.

[0034] When 0.5 ml - 2 ml of absolute ethanol is dropped into a 15-cm-long single-strand power-generating ionic yarn, the yarn can generate a voltage of 400 mV - 500 mV; when 0.5 ml - 2 ml of absolute methanol is dropped into it, the 15-cm-long single-strand power-generating ionic yarn can generate a voltage of 280 mV - 380 mV; when 0.5 ml - 2 ml of 0.1 M NaOH solution is dropped into a 15-cm-long single-strand power-generating ionic yarn, the yarn can generate a voltage of 400 mV - 500 mV; when 0.5 ml - 2 ml of 0.1 M HCl solution is dropped into a 15-cm-long single-strand power-generating ionic yarn, the yarn can generate a voltage of 500 mV - 600 mV.

[0035] The conductive polymer is tightly wrapped by the polymer double network structure, hydrogen bonds, and electrostatic interactions. After stirring at a speed of 1000 r / min in water for 24 hours, the conductive polymer will not come off the yarn; after soaking in water for 24 hours, the conductive polymer will not come off either.

[0036] Weave the ionic yarn that can generate electricity when wetted into a cotton cloth with a specification of 1 cm * 5 cm, and put it into a mixed solution of 1% NaCl and KCl. The cotton cloth can generate a voltage of 450 mV - 550 mV and a current of 300 μA - 400 μA.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ionic power - generating fabric capable of collecting multimodal wetting energy, characterized in that, It includes raw materials in the following parts by weight: A temperature-responsive zwitterionic monomer with a mass percentage concentration of 10%-50%, a crosslinking agent accounting for 0.5%-3% of the molar amount of the temperature-responsive zwitterionic monomer, an initiator accounting for 1%-6% of the molar amount of the temperature-responsive zwitterionic monomer, and a conductive polymer accounting for 150% of the mass of the temperature-responsive zwitterionic monomer.

2. The ionic power generation fabric capable of multi-modal wetting energy collection according to claim 1, wherein: The preparation method of the fabric includes Step 1: performing overall pretreatment on the yarn and fabric, and impregnating the yarn and fabric in a mixed solution with a pH of 3-4 composed of acetic acid, deionized water, and a siloxane coupling agent; Step 2: under vacuum conditions, heating and baking the yarn and fabric at a temperature of 100-105°C for 2-4 h to obtain pretreated yarn and fabric; Step 3: impregnating the pretreated yarn and fabric in a conductive polymer solution for 2-10 min, and drying at 60-90°C to obtain conductive yarn and fabric; Step 4: impregnating the conductive yarn and fabric in a temperature-responsive zwitterionic monomer solution system to obtain ionic yarn and fabric capable of generating electricity upon wetting; Step 5: performing pre-drying treatment on the conductive yarn and fabric at a temperature of 70-120°C for 1-3 min; placing the pre-dried conductive yarn and fabric in an ultraviolet box for in-situ photoinitiated polymerization and crosslinking reaction, where the wavelength of the ultraviolet lamp is 365 nm, the ultraviolet irradiation power is 200-400 W, the ultraviolet irradiation time is 2-5 min, and placing the yarn and fabric after ultraviolet irradiation in absolute ethanol for 2-10 min and then air-drying naturally to obtain the ionic yarn and fabric capable of generating electricity upon wetting.

3. The ionic power generation fabric capable of multi-modal wetting energy collection according to claim 2, characterized in that: The siloxane coupling agent is 3-(trimethoxysilyl)propyl methacrylate (TMSPMA); the yarn and fabric are one of cotton yarn fabric, viscose fiber, and regenerated cellulose fiber; in Step 1, the hydroxyl groups on the yarn and fabric react with the siloxane coupling agent in the mixed solution at 60-90°C to introduce carbon-carbon double bonds on the yarn and fabric.

4. The ionic power generation fabric capable of multi-modal wetting energy collection according to claim 3, characterized in that: The conductive polymer solution is one or a combination of more of PEDOT (poly(3,4-ethylenedioxythiophene)):PSS (polystyrene sulfonate), polyaniline, polypyrrole, polythiophene, and their derivatives.

5. The ionic power generation fabric capable of multimodal wetting energy collection according to claim 4, characterized in that: The temperature-responsive zwitterionic monomer solution system includes a temperature-responsive zwitterionic monomer, a crosslinking agent, an initiator, and a solvent. The mass percentage concentration of the temperature-responsive zwitterionic monomer is 10% to 50%, the dosage of the crosslinking agent is 0.5% to 3% of the molar amount of the temperature-responsive zwitterionic monomer, the dosage of the initiator is 1% to 6% of the molar amount of the temperature-responsive zwitterionic monomer, and the dosage of the conductive polymer is 150% of the mass of the temperature-responsive zwitterionic monomer.

6. The ionic power generation fabric capable of collecting multi-modal wetting energy according to claim 5, characterized in that: The temperature-responsive zwitterionic monomer is one or a combination of more of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide, 2-methyl-2-acryloyloxyethyl phosphorylcholine, and carboxybetaine methacrylate.

7. The ionic power generation fabric for multimodal wetting energy collection according to claim 6, characterized in that: The crosslinking agent is one of ethylene glycol dimethacrylate or N,N′-methylenebisacrylamide, the initiator is one of 2,2-diethoxyacetophenone or 2-hydroxy-4′-(2-hydroxyethoxy)-2-methylpropiophenone, and the solvent is one of absolute ethanol or trifluoroethanol.

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