A high-temperature resistant flexible triboelectric nanogenerator sensor and its preparation method and application

Abstract

The present invention discloses a high-temperature resistant flexible triboelectric nanogenerator sensor and its preparation method and application. The high-temperature resistant flexible triboelectric nanogenerator sensor of the present invention has a core-sheath structure, including a triboelectric negative electrode, a triboelectric positive electrode and an ionic gel electrode. Among them, a three-dimensional patterned silica gel tube with protrusions on the outer surface is prepared by 3D printing as an electro-negative friction layer, and aramid non-woven fabric is used as an electro-positive friction layer. The non-woven aramid fabric is spirally wound on the surface of the ionic gel electrode, and the silica gel tube negative friction layer with threads is wrapped on the surface of the non-woven aramid fabric. Based on the patterned silica gel tube and the assembled structure of the materials, the sensor of the present invention not only has a high electrical output signal, but also can be stretched, twisted and bent; based on the inherent high-temperature resistant properties of ionic gel, silica gel and aramid, the sensor has a good temperature impedance effect in a high-temperature environment and can be applied to wearable devices in a high-temperature environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of triboelectric power generation, and particularly relates to a high-temperature resistant flexible triboelectric nanogenerator sensor and a preparation method and application thereof. Background Art

[0002] A triboelectric nanogenerator (TENG) is an energy conversion device based on the triboelectrification and electrostatic induction effects. It can obtain mechanical energy from irregular vibrations, triggers, slides, rotations, or even sound waves and convert it into electrical energy. It can also collect low-frequency mechanical energy generated by the human body in daily life, which is difficult to collect by traditional methods, and continuously and stably supply power to electronic devices.

[0003] The triboelectric nanogenerator can not only achieve self-driving without additional energy input, but also be used as a sensor to monitor human movements, showing great development prospects in the field of wearable devices. CN 110277936 B discloses a flexible and reparable triboelectric nanogenerator and its application. In the present invention, a reparable hydrogel is used as the electrode, and the prepared triboelectric nanogenerator can be used on wearable electronic devices. However, the material is an organic polymer that is not resistant to high temperatures, and potential high-temperature failure limits the service ability of TENG in extremely high-temperature environments. The patent application with the application number CN111174945A discloses a pressure sensor based on a triboelectric nanogenerator, which is prepared by combining a lower support plate, an electrode, a vibration membrane, an upper support plate, and a spring to prepare a triboelectric nanogenerator pressure sensor, which can achieve self-power supply of the sensor and sense external pressure. However, the assembly materials are relatively rigid and cannot fully meet the requirements of flexibility and deformability in practical applications.

[0004] Therefore, it is of great significance to develop a triboelectric nanogenerator sensor with low cost, flexibility, high temperature resistance, and strong triboelectric effect to meet the requirements of wearability in high-temperature, complex, and extreme environments. Summary of the Invention

[0005] To solve the drawbacks and deficiencies of the prior art, the primary object of the present invention is to provide a preparation method for a high-temperature resistant flexible triboelectric nanogenerator sensor.

[0006] Another object of the present invention is to provide a high-temperature resistant flexible triboelectric nanogenerator sensor prepared by the above method.

[0007] Another object of the present invention is to provide the application of the above high-temperature resistant flexible triboelectric nanogenerator sensor in a high-temperature environment.

[0008] The object of the present invention is achieved by the following technical solutions:

[0009] A preparation method for a high-temperature resistant flexible triboelectric nanogenerator sensor includes the following steps:

[0010] (1) Mix ethyl acrylate, crosslinking agent, initiator and solvent evenly, carry out ultraviolet crosslinking reaction, and dry to obtain a single-network elastomer;

[0011] (2) Immerse the single-network elastomer in a mixed solution of ethyl acrylate, crosslinking agent and initiator for swelling, take it out and then carry out ultraviolet crosslinking reaction, and dry to obtain a double-network elastomer;

[0012] (3) Immerse the double-network elastomer in an ionic liquid solution, take it out and dry to remove the solvent to obtain an ion gel;

[0013] (4) Inject silicone ink into a 3D printer for printing and curing to obtain a threaded silicone tube;

[0014] (5) Using the ion gel as the electrode layer, the threaded silicone tube as the negative friction layer, and the non-woven aramid fabric as the positive friction layer, assemble them into a tubular structure, where the non-woven aramid fabric is spirally wound on the surface of the ion gel electrode, and the threaded silicone tube negative friction layer is wrapped on the surface of the non-woven aramid fabric to obtain a triboelectric nanogenerator.

[0015] Preferably, the molar ratio of ethyl acrylate, crosslinking agent, initiator and solvent in step (1) is 1: 0.01 - 0.015: 0.01 - 0.02: 2 - 2.5.

[0016] Preferably, the crosslinking agent in steps (1) and (2) is ethylene glycol dimethacrylate.

[0017] Preferably, the initiator in steps (1) and (2) is 1-hydroxycyclohexyl phenyl ketone.

[0018] Preferably, the solvent in step (1) is at least one of ethanol, toluene and cyclohexane.

[0019] Preferably, the conditions for the ultraviolet crosslinking reaction in step (1) are: ultraviolet light wavelength range 320 - 395 nm, ultraviolet light power 10 - 20 mW / cm 2 , and the light irradiation time is 3 - 5 minutes.

[0020] Preferably, the drying temperature in steps (1) - (3) is 50 - 70 °C, and the time is 10 - 15 h.

[0021] Preferably, the molar ratio of ethyl acrylate, crosslinking agent and initiator in step (2) is 1: 0.0002 - 0.0004: 0.0002 - 0.0004.

[0022] Preferably, the swelling time in step (2) is 10 - 15 min.

[0023] Preferably, the conditions for the ultraviolet cross-linking reaction in step (2) are as follows: the ultraviolet light wavelength range is 320 - 395 nm, the ultraviolet light power is 10 - 20 mW / cm 2 , and the light irradiation time is 8 - 10 minutes.

[0024] Preferably, the ionic liquid in the ionic liquid solution in step (3) is at least one of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (CAS No.: 174899-82-2), N-hexylpyridinium bis(trifluoromethylsulfonyl)imide (CAS No.: 460983-97-5), N-methyl, butylpyrrolidinium bis(trifluoromethylsulfonyl)imide (CAS No.: 223437-11-4), 1-butyl-1-methylpiperidinium bis(trifluoromethylsulfonyl)imide (CAS No.: 623580-02-9), and tributylmethylammonium bis(trifluoromethylsulfonyl)imide (CAS: 405514-94-5); the volume ratio of the solute to the solvent in the ionic liquid solution is 1:5 - 1:8.

[0025] Preferably, the soaking time of the double-network elastomer in the ionic liquid solution in step (3) is 50 - 70 min.

[0026] Preferably, the solvent of the ionic liquid solution in step (3) is ethanol.

[0027] Preferably, the printing conditions in step (4) are as follows: the needle diameter is 0.46 - 1.2 mm, the printing platform temperature is 70 - 90 °C, the diameter of the printed silicone tube is 5 - 6 mm, the printing speed is 30 - 200 mm / min, and the length of the printed silicone tube is 1.5 - 3.5 cm.

[0028] Preferably, the curing in step (4) is thermal curing, the curing temperature is 70 - 90 °C, and the time is 2 - 3 h.

[0029] Preferably, the non-woven aramid fabric in step (5) is strip-shaped, with a thickness of 0.8 - 1.2 mm and a strip width of 4 - 5 mm.

[0030] A high-temperature resistant flexible triboelectric nanogenerator sensor prepared by the above method.

[0031] The high-temperature resistant flexible triboelectric nanogenerator sensor obtained by the present invention is flexible, stretchable and high-temperature resistant, and can be used as a wearable device in high-temperature environments, such as fire-fighting environments.

[0032] Application of the above high-temperature resistant flexible triboelectric nanogenerator sensor in wearable devices.

[0033] Preferably, the wearable device is used in the field of fire-fighting.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0035] The present invention selects silicone ink and uses 3D printing, a simple and fast method, to obtain a patterned three-dimensional triboelectric negative electrode, endowing the negative electrode with structural diversity and significantly improving the electrical output signal of the triboelectric nanogenerator sensor.

[0036] A high-temperature resistant flexible triboelectric nanogenerator sensor prepared by the present invention has good flexibility, stretchability, and also has thermal stability, and can be used in a wide temperature range of 0 to 200 °C, overcoming the defect that the existing triboelectric nanogenerator sensors have poor application effects at high temperatures. Description of the Drawings

[0037] Figure 1 It is the conductivity of the ionic gel prepared in Example 1 of the present invention in the range of 0 to 200 °C. The conductivity of the prepared ionic gel increases with the increase of temperature and still has high conductivity at a high temperature of 200 °C.

[0038] Figure 2 It is the mass change of the ionic gel prepared in Example 1 of the present invention when placed at 200 °C for 2 h. The weight of the prepared ionic gel is basically unchanged throughout the process and has good thermal stability.

[0039] Figure 3 It is a schematic structural diagram of the high-temperature resistant flexible triboelectric nanogenerator sensor provided by the present invention, where 1 is a positively charged friction layer, 2 is an ionic gel electrode, and 3 is a negatively charged friction layer.

[0040] Figure 4 It is the stress-strain curve of the triboelectric nanogenerator sensor prepared in Example 1 of the present invention at a speed of 50 mm / min. The prepared sensor has good deformation ability.

[0041] Figure 5 It is the change in electrical signal under different pressing pressures measured when the high-temperature resistant triboelectric nanogenerator sensor prepared in Example 1 of the present invention is assembled on the back of a person's hand.

[0042] Figure 6 It is the change in electrical signal under different bending angles measured when the high-temperature resistant triboelectric nanogenerator sensor prepared in Example 1 of the present invention is assembled on a person's finger.

[0043] Figure 7 It is the change in electrical signal of the high-temperature resistant triboelectric nanogenerator sensor prepared in Example 1 of the present invention at the beginning of slapping with a constant frequency of 5 Hz and a force of 6 N, and after slapping 1000 times.

[0044] Figure 8This shows the change in the electrical signal of the high-temperature resistant triboelectric nanogenerator sensor prepared in Example 1 of the present invention after being treated at different temperatures under a constant pressure of 6N.

[0045] Figure 9 This shows the change in the electrical signal of the high-temperature resistant triboelectric nanogenerator sensor prepared in Comparative Example 1 of the present invention under a constant frequency of 5Hz and a pressure of 6N.

[0046] Figure 10 This shows the change in the electrical signal of the high-temperature resistant triboelectric nanogenerator sensor prepared in Comparative Example 2 of the present invention under a constant frequency of 5Hz and a pressure of 6N. Detailed implementation manners

[0047] The present invention will be further described in detail below in conjunction with the embodiments and the drawings, but the implementation manners of the present invention are not limited thereto.

[0048] For those not specified in the embodiments of the present invention, they are carried out according to conventional conditions or conditions recommended by the manufacturer. The raw materials, reagents, etc. without indicating the manufacturer can all be obtained as conventional products through commercial purchase.

[0049] Example 1

[0050] (1) Preparation of single-network elastomer: 12.908 g of ethyl acrylate, 0.348 g of cross-linking agent ethylene glycol dimethacrylate, 12.908 g of ethanol, and 0.306 g of initiator 1-hydroxycyclohexyl phenyl ketone were stirred and mixed evenly; the obtained mixed solution was poured into a PP mold and irradiated with a UV lamp with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 5 minutes, and then placed in a vacuum oven at 60 °C for 12 h to remove the unreacted ethyl acrylate and ethanol solvents, and a single-network elastomer was prepared.

[0051] (2) Preparation of double-network elastomer: The single-network gel prepared in step (1) was swollen in a mixed solution of 101.019 g of ethyl acrylate, 0.06 g of cross-linking agent ethylene glycol dimethacrylate, and 0.06 g of initiator 1-hydroxycyclohexyl phenyl ketone for 10 min, and then the swollen gel was irradiated with UV light with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 10 minutes, and then placed in a vacuum oven at 60 °C for 12 h to remove the unreacted ethyl acrylate, and a double-network elastomer was prepared.

[0052] (3) Preparation of ionic gel electrode: The double-network gel prepared in step (2) was immersed in a mixed solution of 20 ml of ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 100 ml of ethanol for 60 min, and then taken out and placed in a vacuum oven at 60 °C for 12 h to remove ethanol, and an ionic gel was prepared.

[0053] (4) Printing of the electronegative friction layer: Inject the silicone ink into the syringe of the direct writing printer, fix the thick aluminum foil on the printing platform, select a printing needle with a diameter of 0.46 mm, and print on the printing platform at a temperature of 80 °C at a speed of 80 mm / min according to the code information. The diameter of the printed silicone tube is 5 mm, and the length of the printed silicone tube is 2.5 cm. Then cure it in place for 3 h to obtain a threaded silicone tube electronegative friction layer.

[0054] (5) Preparation of the electropositive friction layer: Cut the 1-mm-thick non-woven aramid fabric into 4-mm-long strips.

[0055] (6) Assembly of the triboelectric nanogenerator sensor: Assemble the ion gel electrode layer, negative friction layer, and positive friction layer obtained in steps (3), (4), and (5) into a core-sheath structure, where the strip-shaped aramid fabric is spirally wound around the surface of the ion gel electrode, and the 3D-printed silicone tube-shaped negative friction layer is wrapped around the aramid surface to obtain a high-temperature-resistant triboelectric nanogenerator sensor.

[0056] Example 2

[0057] (1) Preparation of the single-network elastomer: Stir and mix 3.228 g of ethyl acrylate, 0.086 g of cross-linking agent ethylene glycol dimethacrylate, 3.228 g of ethanol, and 0.0765 g of initiator 1-hydroxycyclohexyl phenyl ketone evenly; Pour the obtained mixed solution into a PP mold, and irradiate it with a UV lamp with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 5 minutes, and then place it in a vacuum oven at 60 °C to dry for 12 h to remove the unreacted ethyl acrylate and ethanol solvents, and prepare the single-network elastomer.

[0058] (2) Preparation of the double-network elastomer: Immerse the single-network gel prepared in step (1) in a mixed solution of 101.019 g of ethyl acrylate, 0.06 g of cross-linking agent, and 0.06 g of initiator for 10 min to swell, and then irradiate the swollen gel with UV light with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 10 minutes, and then place it in a vacuum oven at 60 °C to dry for 12 h to remove the unreacted ethyl acrylate, and prepare the double-network elastomer.

[0059] (3) Preparation of the ion gel electrode: Immerse the double-network gel prepared in step (2) in a mixed solution of 10 ml of ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 80 ml of ethanol for 70 min, and then take it out and place it in a vacuum oven at 60 °C to dry for 14 h to remove ethanol, and prepare the ion gel.

[0060] (4) Printing of the electronegative friction layer: Inject the silicone ink into the syringe of the direct writing printer. Fix the thick aluminum foil on the printing platform. Select a printing needle with a diameter of 0.84 mm and print on the printing platform at a temperature of 70 °C at a speed of 100 mm / min according to the code information. The diameter of the printed silicone tube is 5 mm, and the length of the printed silicone tube is 3 cm. Then cure it in place for 3 h to obtain a threaded silicone tube electronegative friction layer.

[0061] (5) Preparation of the electropositive friction layer: Cut the 0.9 mm thick non-woven aramid cloth into 4 mm long strips.

[0062] (6) Assembly of the triboelectric nanogenerator sensor: Assemble the ion gel electrode layer, the negative friction layer and the positive friction layer obtained in steps (3), (4) and (5) into a core-sheath structure, where the strip-shaped aramid cloth is spirally wound on the surface of the ion gel electrode, and the 3D printed silicone tube-shaped negative friction layer is wrapped on the aramid surface to obtain a high-temperature resistant triboelectric nanogenerator sensor.

[0063] Comparative Example 1

[0064] (1) Preparation of the single-network elastomer: Stir and mix 12.908 g of ethyl acrylate, 0.348 g of cross-linking agent ethylene glycol dimethacrylate, 12.908 g of ethanol, and 0.306 g of initiator 1-hydroxycyclohexyl phenyl ketone evenly; Pour the obtained mixed solution into a PP mold and irradiate it with a UV lamp with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 5 minutes, and then place it in a vacuum oven at 60 °C to dry for 12 h to remove the unreacted ethyl acrylate and ethanol solvents, and prepare a single-network elastomer.

[0065] (2) Preparation of the double-network elastomer: Immerse the single-network gel prepared in step (1) in a mixed solution of 101.019 g of ethyl acrylate, 0.06 g of cross-linking agent ethylene glycol dimethacrylate and 0.06 g of initiator 1-hydroxycyclohexyl phenyl ketone for 10 min, and then irradiate the swollen gel with ultraviolet light with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 10 minutes, and then place it in a vacuum oven at 60 °C to dry for 12 h to remove the unreacted ethyl acrylate, and prepare a double-network elastomer.

[0066] (3) Preparation of the ion gel electrode: Immerse the double-network gel prepared in step (2) in a mixed solution of 20 ml of ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 100 ml of ethanol for 60 min, and then take it out and place it in a vacuum oven at 60 °C to dry for 12 h to remove ethanol, and prepare an ion gel.

[0067] (4) Preparation of the electronegative friction layer: The silicone ink was directly scrape-coated on the plexiglass plate with a length of 2.5 cm, a width of 1 cm, and a thickness of 0.46 mm to obtain a patternless silicone electronegative friction layer.

[0068] (5) Preparation of the electropositive friction layer: The non-woven aramid cloth with a thickness of 1 mm was cut into small pieces with a length of 2.5 cm and a width of 1 cm to obtain an aramid electropositive friction layer.

[0069] (6) Assembly of the triboelectric nanogenerator sensor: The ion gel electrode layer, the negative friction layer, and the positive friction layer obtained in steps (3), (4), and (5) were assembled into a sandwich structure, where the ion gel electrode was at the bottom layer, the aramid covered the surface of the gel, and the silicone negative friction layer covered the surface of the aramid to obtain a high-temperature-resistant triboelectric nanogenerator sensor.

[0070] The assembled triboelectric nanogenerator sensor mentioned above cannot be stretched when subjected to an external force, and the voltage signal output is small (15 V), as Figure 9 shown. Examples 1-2 and Comparative Example 1 illustrate that the 3D-printed patterned silicone tube and the material combination structure used in the present invention can not only endow the sensor with stretchability but also significantly improve the electrical output signal of the sensor.

[0071] Comparative Example 2

[0072] (1) Preparation of the single-network elastomer: 12.908 g of ethyl acrylate, 0.348 g of cross-linking agent ethylene glycol dimethacrylate, 12.908 g of ethanol, and 0.306 g of initiator 1-hydroxycyclohexyl phenyl ketone were stirred and mixed evenly; the obtained mixed solution was poured into a PP mold and irradiated with a UV lamp with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 5 minutes, and then placed in a vacuum oven at 60 °C for 12 h to remove the unreacted ethyl acrylate and ethanol solvents, thereby preparing the single-network elastomer.

[0073] (2) Preparation of the double-network elastomer: The single-network gel prepared in step (1) was swollen in a mixed solution of 101.019 g of ethyl acrylate, 0.06 g of cross-linking agent ethylene glycol dimethacrylate, and 0.06 g of initiator 1-hydroxycyclohexyl phenyl ketone for 10 min, and then the swollen gel was irradiated with UV light with a wavelength of 365 nm and a power density of 20 mW / cm 2 for 10 minutes, and then placed in a vacuum oven at 60 °C for 12 h to remove the unreacted ethyl acrylate, thereby preparing the double-network elastomer.

[0074] (3) Preparation of the ionic gel electrode: Immerse the double-network gel obtained in step (2) into a mixed solution of 20 ml of ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 100 ml of ethanol for 60 min, then take it out and place it in a vacuum oven at 60 °C to dry for 12 h to remove ethanol, and the ionic gel is prepared.

[0075] (4) Preparation of the electro-negative friction layer: Uniformly scrape the silicone ink onto a polyethylene tube with a diameter of 5 mm, control the thickness to be approximately 0.46 mm, then cure it at 80 °C for 3 h, demold it from the polyethylene tube, and control the length to be 2.5 cm to obtain a non-patterned silicone tube electro-negative friction layer.

[0076] (5) Preparation of the electro-positive friction layer: Cut the non-woven aramid cloth with a thickness of 1 mm into strips with a length of 4 mm.

[0077] (6) Assembly of the triboelectric nanogenerator sensor: Assemble the ionic gel electrode layer, the negative friction layer, and the positive friction layer obtained in steps (3), (4), and (5) into a core-sheath structure, where the strip-shaped aramid cloth is spirally wound on the surface of the ionic gel electrode, and the non-patterned silicone tube-shaped negative friction layer is wrapped on the surface of the aramid to obtain a high-temperature-resistant triboelectric nanogenerator sensor.

[0078] The voltage signal output of the assembled triboelectric nanogenerator sensor is 60 V. Compared with Example 1, the voltage signal output is reduced by nearly 20 V, indicating that the material combination structure used in the present invention can significantly improve the electrical output signal of the sensor.

[0079] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor, characterized in that, It includes the following steps: (1) Mix ethyl acrylate, a crosslinking agent, an initiator, and a solvent uniformly, conduct ultraviolet crosslinking reaction, and dry to obtain a single-network elastomer; (2) Immerse the single-network elastomer in a mixed solution of ethyl acrylate, a crosslinking agent, and an initiator for swelling, take it out and then conduct ultraviolet crosslinking reaction, and dry to obtain a double-network elastomer; (3) Immerse the double-network elastomer in an ionic liquid solution, take it out and dry to remove the solvent to obtain an ion gel; (4) Inject silicone ink into a 3D printer for printing and curing to obtain a threaded silicone tube; (5) Use the ion gel as the electrode layer, the threaded silicone tube as the negative friction layer, and the non-woven aramid fabric as the positive friction layer to assemble into a tubular structure, wherein the non-woven aramid fabric is spirally wound on the surface of the ion gel electrode, and the threaded silicone tube negative friction layer is wrapped on the surface of the non-woven aramid fabric to obtain a triboelectric nanogenerator sensor.

2. The preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 1, wherein, The ionic liquid in the ionic liquid solution described in step (3) is at least one of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, N-hexylpyridinium bis(trifluoromethylsulfonyl)imide, N-methyl, butylpyrrolidinium bis(trifluoromethylsulfonyl)imide, 1-butyl-1-methylpiperidinium bis(trifluoromethylsulfonyl)imide, and tributylmethylammonium bis(trifluoromethylsulfonyl)imide; The immersion time of the double-network elastomer in the ionic liquid solution is 50 - 70 min.

3. The preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 1, wherein The molar ratio of ethyl acrylate, the crosslinking agent, and the initiator described in step (1) is 1:0.01 - 0.015:0.01 - 0.02; The molar ratio of ethyl acrylate, the crosslinking agent, and the initiator described in step (2) is 1:0.0002 - 0.0004:0.0002 - 0.0004; The crosslinking agents described in steps (1) and (2) are both ethylene glycol dimethacrylate; the initiators are both 1-hydroxycyclohexyl phenyl ketone; The swelling time described in step (2) is 10 - 15 min.

4. The preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 1, characterized in that, The conditions for the ultraviolet cross-linking reaction in step (1) are as follows: the ultraviolet light band is 320 - 395 nm, the ultraviolet light power is 10 - 20 mW / cm 2 , and the light irradiation time is 3 - 5 minutes; The conditions for the ultraviolet cross-linking reaction described in step (2) are as follows: the ultraviolet light wavelength range is 320 - 395 nm, the ultraviolet light power is 10 - 20 mW / cm 2 , and the light irradiation time is 8 - 10 minutes.

5. The preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 1, characterized in that, The printing conditions described in step (4) are: the needle diameter is 0.46 - 1.2 mm, the printing platform temperature is 70 - 90 °C, and the printing speed is 30 - 200 mm / min; the diameter of the printed silicone tube is 5 - 6 mm; the length of the printed silicone tube is 1.5 - 3.5 cm; The non-woven aramid fabric described in step (5) is strip-shaped, with a thickness of 0.8 - 1.2 mm and a strip width of 4 - 5 mm.

6. The preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 1, wherein, The curing described in step (4) is thermal curing; directly conduct thermal curing at 70 - 90 °C on the printing platform for 2 - 3 h after printing.

7. The preparation method of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 1, characterized in that, The solvent described in step (1) is at least one of ethanol, toluene, and cyclohexane; the molar ratio of ethyl acrylate and the solvent described in step (1) is 1:2 - 2.5; The volume ratio of the solute to the solvent in the ionic liquid solution described in step (3) is 1:5 - 1:8; the solvent of the ionic liquid solution is ethanol; The drying temperature in steps (1) - (3) is 50 - 70 °C, and the time is 10 - 15 h.

8. A high-temperature resistant flexible triboelectric nanogenerator sensor prepared by the preparation method according to any one of claims 1 - 7.

9. Application of the high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 8 in wearable devices.

10. The application of a high-temperature resistant flexible triboelectric nanogenerator sensor according to claim 9 in a wearable device, characterized in that, The wearable device is used in the field of fire fighting.

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