CN112311275A - Wearable energy collector and preparation method of PDMS-BT film - Google Patents
Wearable energy collector and preparation method of PDMS-BT film Download PDFInfo
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- CN112311275A CN112311275A CN202011110772.2A CN202011110772A CN112311275A CN 112311275 A CN112311275 A CN 112311275A CN 202011110772 A CN202011110772 A CN 202011110772A CN 112311275 A CN112311275 A CN 112311275A
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- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims abstract description 12
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/06—Influence generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Abstract
The invention discloses a wearable energy collector which comprises a rectangular cavity, wherein at least two key grooves are oppositely arranged on the inner side of the middle part of the cavity, an electromagnetic induction coil is wound between the two key grooves, a rubidium iron boron magnet is arranged in the electromagnetic induction coil, and the electromagnetic induction coil is connected with a rectifying circuit c through the cavity; sealing covers are arranged at the top and the bottom of the cavity, a PVDF film is vertically arranged on the inner side of the sealing cover at the top, and electrodes on the upper surface and the lower surface of the sealing cover are connected with leads which are led out through the sealing covers and connected with a rectifying circuit a; the sealing cover at the bottom is provided with a friction nanometer generator. The invention also relates to a preparation method of the PDMS-BT film, which adopts a ball mill to fully mix a proper amount of BT and PDMS; and coating the PDMS-BT film in a mold, and putting the mold into an oven for curing to obtain the PDMS-BT film. The problems that the existing energy collecting device is complex in structure, high in manufacturing cost and not easy to carry, and the electric energy output of the existing friction generator is low are solved.
Description
Technical Field
The invention belongs to the technical field of energy collection, particularly relates to a wearable energy collector, and further relates to a preparation method of a PDMS-BT film.
Background
At present, the wearable electron device of intelligence mainly adopts the battery to supply power, but battery life is limited, can produce certain pollution to the environment after the battery abandonment moreover. The human body has abundant energy and is considered as a promising energy source, and the existing energy collecting device can convert mechanical energy generated by human body movement into electric energy. However, the conventional energy collecting device has the defects of complex structure, high manufacturing cost, difficulty in carrying and the like; the triboelectric generator composed of pure polydimethylsiloxane has a problem of low electrical performance output. Therefore, an energy collector which is small in size and light is urgently needed to be designed so as to collect mechanical energy generated by daily activities of a human body and finish converting the mechanical energy into electric energy, and therefore power is continuously supplied to the intelligent wearable product.
Disclosure of Invention
The invention aims to provide a wearable energy collector, which solves the problems of complex structure, high manufacturing cost and difficulty in carrying of an energy collecting device in the prior art.
The invention also aims to provide a preparation method of the PDMS-BT film, which solves the problem of low electrical property output of a friction generator consisting of pure polydimethylsiloxane in the prior art.
The wearable energy collector comprises a rectangular cavity, wherein at least two key grooves are oppositely arranged on the inner side of the middle part of the cavity, an electromagnetic induction coil is wound between the two key grooves, a rubidium-iron-boron magnet is arranged in the electromagnetic induction coil, and the electromagnetic induction coil is connected with a rectifying circuit c through the cavity;
sealing covers are arranged at the top and the bottom of the cavity, a PVDF film is vertically arranged on the inner side of the sealing cover at the top, and electrodes on the upper surface and the lower surface of the PVDF film are connected with leads, led out through the sealing covers and connected with a rectifying circuit a; the sealing cover at the bottom is provided with a friction nanometer generator.
The invention is also characterized in that:
the cavity and the sealing cover are both made of nylon or ABS plastic; the cavity and the sealing cover are bonded through conductive adhesive.
The cross section of the rubidium iron boron magnet is rectangular, and the rubidium iron boron magnet is in contact with the cavity; gaps are respectively arranged between the rubidium iron boron magnet and the PVDF film and between the rubidium iron boron magnet and the friction nano generator.
The PVDF film is in an inverted arch shape.
The friction nano generator comprises an elliptical ring-shaped PVC film, and two opposite inner sides of the PVC film are respectively provided with a friction upper layer and a friction lower layer;
the friction upper layer comprises a polypropylene plate a and a third electrode which are bonded, and the polypropylene plate a is bonded with the inner side of the PVC film; the friction lower layer comprises a PDMS-BT film, a fourth electrode and a polypropylene plate b which are arranged in sequence from top to bottom, and the fourth electrode, the polypropylene plate b and the inner side of the PVC film are bonded in sequence;
and the leads of the third electrode and the fourth electrode are connected with a rectifying circuit b through a rectangular cavity.
The third electrode and the fourth electrode are nickel and silver electrodes; the surfaces of the third electrode and the fourth electrode are polished by 1000-mesh sand paper to form scratches.
The mass volume concentration of barium titanate in the PDMS-BT film is 2.4 wt% -7.2 wt%, and the surface of the PDMS-BT film is polished into a porous structure by 1500-mesh abrasive paper.
The key groove is in a space key shape, the key groove body is uniformly provided with at least 8 coil holes, and the coil holes are wound with electromagnetic induction coils; the key groove and the cavity are bonded through conductive adhesive.
The invention adopts another technical scheme that the preparation method of the PDMS-BT film is implemented according to the following steps:
step 1, weighing a proper amount of BT and PDMS;
3, ultrasonically treating the mixed solution for 1h by using an ultrasonic oscillator to remove bubbles in the mixed solution;
and 4, coating the mixed solution in a mold, and putting the mold into an oven for curing to obtain the PDMS-BT film.
The invention is also characterized in that:
the mass ratio of BT to PDMS is 0.123-0.776: 5-10; the curing temperature is 90 deg.C and the curing time is 50 min.
The invention has the beneficial effects that:
the wearable energy collector is simple in structure, low in cost and portable to carry, and is fixed with arms and shanks of a human body through the rubber belts, so that mechanical energy generated by motion of the human body is converted into electric energy to continuously supply power to an intelligent wearable product; according to the wearable energy collector, the cavity is made of nylon or ABS plastic and is formed by 3D printing, so that the precision is high, and the cost is low; the wearable energy collector is easy to carry, free of pollution and high in energy conversion efficiency, and provides a unique idea for the design of future intelligent wearable electronic equipment; according to the wearable energy collector, the PVDF film is recovered from deformation through reciprocating motion of the rubidium-iron-boron magnet, the magnetic flux of the electromagnetic induction coil is changed, the third electrode, the PDMS-BT film and the fourth electrode are separated from contact, and mechanical energy generated by walking and running of a human body is efficiently converted into electric energy through the 3 modes; the invention relates to a wearable energy collector, which converts alternating current generated by a human motion collector into direct current through bridge rectifier circuits a, b and c by utilizing the one-way conductivity of a diode, thereby driving a micro-power consumption intelligent wearable electronic device.
(2) The preparation method of the PDMS-BT film has the advantages of simple preparation process and low cost; according to the preparation method of the PDMS-BT film, the surface of the prepared PDMS-BT film is rubbed by abrasive paper to form a surface microporous structure, so that the electric energy output of the PDMS-BT film is improved, and the barium titanate nanoparticles with higher dielectric constants are doped, so that the electric energy output of the PDMS-BT film is obviously improved.
Drawings
FIG. 1 is a schematic structural view of a wearable energy harvester of the present invention;
FIG. 2 is a graph of the voltage waveform output by a PVDF membrane in a wearable energy harvester of the invention;
FIG. 3 is a graph of the voltage waveform output by the electromagnetic coil in a wearable energy harvester of the present invention;
FIG. 4 is a graph of the voltage waveform output by the PDMS-BT film in a wearable energy harvester of the present invention;
fig. 5 is a schematic diagram of a rectifying circuit in the wearable energy harvester of the invention.
In the figure, 1, PVDF film, 2, a cavity, 3, a key slot, 4, an electromagnetic induction coil, 6, rubidium, iron and boron magnet, 7, polypropylene plate a, 8, a third electrode, 9, PVC film, 10, PDMS-BT film, 11, a fourth electrode, 12, polypropylene plate b.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a wearable energy collector, which comprises a rectangular cavity 2, wherein at least two key grooves 3 are oppositely arranged on the inner side of the middle part of the cavity 2, an electromagnetic induction coil 4 is wound between the two key grooves 3, a rubidium iron boron magnet 6 is arranged in the electromagnetic induction coil 4, and the electromagnetic induction coil 4 is connected with a rectifying circuit c through the cavity 2; wherein, the rubidium iron boron magnet 6 can move up and down along the cavity 2;
sealing covers are arranged at the top and the bottom of the cavity 2, the PVDF film 1 is vertically arranged on the inner side of the sealing cover at the top, and the upper surface electrode and the lower surface electrode of the PVDF film 1 are connected with leads, led out through the sealing covers and connected with a rectifying circuit a; the sealing cover at the bottom is provided with a friction nanometer generator.
Preferably, the cavity 2 and the sealing cover are both made of nylon or ABS plastic; the cavity 2 and the sealing cover are bonded through conductive adhesive.
Preferably, the cross section of the rubidium iron boron magnet 6 is rectangular, and the rubidium iron boron magnet 6 is in contact with the cavity 2; gaps are respectively arranged between the rubidium iron boron magnet 6 and the PVDF film 1 and between the rubidium iron boron magnet and the friction nano generator.
Preferably, the PVDF film 1 has an inverted dome shape.
Preferably, the friction nano generator comprises an elliptical ring-shaped PVC film 9, and two opposite inner sides of the PVC film 9 are respectively provided with a friction upper layer and a friction lower layer;
the friction upper layer comprises a polypropylene plate a7 and a third electrode 8 which are bonded, and the polypropylene plate a7 is bonded with the inner side of the PVC film 9; the friction lower layer comprises a PDMS-BT film 10, a fourth electrode 11 and a polypropylene plate b12 which are arranged in sequence from top to bottom, and the fourth electrode 11, the polypropylene plate b12 and the inner side of the PVC film 9 are bonded in sequence;
the conducting wires of the third electrode 8 and the fourth electrode 11 are connected with a rectifying circuit b through the rectangular cavity 2.
Preferably, the third electrode 8 and the fourth electrode 11 are nickel and silver electrodes; the surfaces of the third electrode 8 and the fourth electrode 11 are polished by 1000-mesh sand paper to form scratches, so that the contact area between the third electrode and the PDMS-BT film 10 is increased.
Preferably, the mass volume concentration of barium titanate in the PDMS-BT film 10 is 2.4 wt% to 7.2 wt%, and the surface of the PDMS-BT film 10 is sanded with 1500 mesh sandpaper to form a porous structure.
Preferably, the key slot 3 is in a space key shape, the body of the key slot 3 is uniformly provided with at least 8 coil holes, and the coil holes are wound with the electromagnetic induction coils 4; the key slot 3 and the cavity 2 are bonded through conductive adhesive.
The main components of the wearable energy harvester of the invention have the following functions:
the rectangular cavity 2 and the upper and lower sealing covers provide a closed space for the upper and lower reciprocating motions of the rubidium-iron-boron magnet 6, so that the rubidium-iron-boron magnet 6 cannot fall off in the reciprocating motion process;
the rubidium iron boron magnet 6 and the electromagnetic induction coil 4 form an electromagnetic power generation unit; the PVDF film 1 has good piezoelectric effect and is used as a piezoelectric power generation unit; the PDMS-BT film 10 has a good triboelectric effect, and the PDMS-BT film 10, the third electrode 8 and the fourth electrode 11 form a friction power generation unit; the intelligent wearable electronic device is continuously powered in a diversified power generation mode.
The invention relates to a wearable energy collector, which has the working principle as follows:
the surface electrode of the PVDF film 1 is connected with a wiring port of a rectifying circuit a through a conducting wire, an electric third electrode 8 and a fourth electrode 11 are connected with a wiring port of a rectifying circuit b through conducting wires, an electromagnetic induction coil 4 is connected with a wiring port of a rectifying circuit c, and output ports of the rectifying circuits a, b and c are connected with input ports of intelligent wearable electronic devices;
the wearable energy collector is worn on an arm or ankle, when the wearable energy collector walks, the swinging of the arm or the lower leg can drive the energy collector to swing, the rubidium iron boron magnet 6 vibrates up and down in the energy collector, when the rubidium iron boron magnet 6 moves upwards, the rubidium iron boron magnet pushes the PVDF film 1 to deform the PVDF film 1, at the moment, the positive potential of the PVDF film 1 is increased, charges are conveyed to the rectifying circuit a through a surface electrode of the PVDF film 1 to be stored, when the rubidium iron boron magnet 6 moves downwards, the PVC film 9 is pressed downwards, the PVC film 9 is continuously pressed downwards until the third electrode 8 is in contact with the PDMS-BT film 10, electrons are transferred to the PDMS-BT film 10 from the third electrode 8, at the moment, the surface of the third electrode 8 is fully charged with positive charges, and the surface of the PDMS-BT film 10 is fully charged with negative charges; the third electrode 8 and the fourth electrode 11 transmit the charges to the rectifying circuit b for storage; along with rubidium iron boron magnetism iron 6 upper and lower swing, the magnetic flux through electromagnetic induction coil 4 also constantly changes thereupon, produces induced-current promptly in electromagnetic induction coil 4, stores electric charge transmission rectifier circuit c, realizes the continuous power supply to intelligent wearable electron device.
The surfaces of the third electrode 8 and the fourth electrode 11 are both polished by sand paper to form scratches, i.e. microstructures are generated, so that the contact area of the PDMS-BT film 10 with the third electrode 8 and the fourth electrode 11 is increased; the PVDF film 1 is arched, and the arched structure is beneficial to generating larger deformation, so that higher electric energy output is obtained; the PDMS-BT film 10 is a PDMS film with the doping concentration of 2.4 wt% -7.2 wt% of barium titanate, and the surface of the PDMS-BT film 10 is rubbed by abrasive paper to form a surface microporous structure, which is beneficial to improving the electric energy output; doping barium titanate nanoparticles with a higher dielectric constant significantly improves the electrical energy output of the PDMS-BT film 10.
The wearable energy collector is based on the coupling of four effects such as piezoelectric effect, frictional electrification, electrostatic induction and electromagnetic induction, when the PDMS-BT film 10, the third electrode 8 and the fourth electrode 11 with different electron losing capacities are contacted and separated, the obtained electrons with strong electron capacity are charged with negative electricity, and the obtained electrons with weak electron capacity are charged with positive electricity; the induced electrons form a current in the rectifying circuit b. And (3) experimental verification:
the electrical properties of the wearable energy harvester of the invention were measured by an oscilloscope at a motion frequency of 3Hz, as shown in fig. 2, 3, and 4, and the results are shown in table 1:
TABLE 1 Electrical Performance of a wearable energy harvester
| Maximum voltage (V) | Minimum voltage (V) | Peak voltage (V) | |
| PVDF thin film | 4.96 | -3.68 | 8.64 |
| Electromagnetic induction coil | 1.64 | -1.80 | 3.44 |
| PDMS-BT film | 6.80 | -23.00 | 29.80 |
From table 1, the following conclusions can be drawn:
(1) the PVDF film 1, the electromagnetic induction coil 4 and the PDMS-BT film 10 are connected with an oscilloscope and then display obvious electrical performance output, namely obvious voltage amplitude change, peak value change and higher output voltage, which is proved by experiments, and the wearable energy collector can convert the mechanical energy of a human body into electric energy for output;
(2) as can be seen from fig. 2, 3 and 4, when the swing frequency of the arm or the lower leg is 3Hz, the maximum and minimum wave peaks generated by the wearable energy harvester of the invention can be kept within a stable range, which indicates that the wearable energy harvester of the invention can continuously and stably convert the mechanical energy of the human body into the electric energy.
In summary, the wearable energy collector of the invention utilizes the piezoelectric effect of the PVDF film 1, the electromagnetic induction principle of the electromagnetic induction coil 4, and the friction electrification and electrostatic induction effects between the PDMS-BT film 10 and the third and fourth electrodes 8 and 11 to obtain higher transient voltage, and has good electric energy output and energy conversion efficiency.
The invention also relates to an acquisition method of the wearable energy collector, which is implemented according to the following steps:
step 1, manufacturing rectifying circuits a, b and c;
2, connecting the upper surface electrode and the lower surface electrode of the PVDF film 1 with a wiring port of a rectifying circuit a through leads, and respectively connecting the leads of the third electrode 8 and the fourth electrode 11 with a wiring port of a rectifying circuit b; the electromagnetic induction coil 4 is connected with a wiring port of the rectifying circuit c;
step 3, wearing the wearable energy collector on an arm or ankle, driving the wearable energy collector to swing by the swing of the arm or the lower leg when the wearable energy collector walks, and enabling the rubidium iron boron magnet 6 to vibrate up and down in the wearable energy collector, so that the PVDF film 1 is extruded upwards, the PVC film 9 is extruded downwards, and the third electrode 8 is continuously pressed downwards until the third electrode is contacted with the PDMS-BT film 10;
the PVDF film 1 is deformed, the positive potential of the PVDF film is increased, and charges are transmitted to a rectifying circuit a through a surface electrode of the PVDF film for storage; the third electrode 8 and the fourth electrode 11 transmit the charges to the rectifying circuit b for storage; induced current is generated in the electromagnetic induction coil 4, and charges are transmitted to the rectifying circuit c to be stored, so that continuous power supply of the intelligent wearable electronic device is realized.
The manufacturing method of the rectifier circuit comprises the following steps:
selecting a circuit board, a terminal, a capacitor with the capacitance value of 1 muF and 4 diodes; inserting the wiring terminal, the 4 diodes and the capacitor into a soldering tin hole of the circuit board and welding; wherein, 4 diodes are butted pairwise; then the capacitor is connected in parallel to obtain a rectifying circuit a; the preparation method of the rectification circuits b and c is the same as that of the rectification circuit a. The rectifier circuits a, b, c are connected in parallel as shown in fig. 5.
The invention also relates to a preparation method of the PDMS-BT film, which is implemented according to the following steps:
step 1, weighing a proper amount of BT and PDMS;
3, ultrasonically treating the mixed solution for 1h by using an ultrasonic oscillator to remove bubbles in the mixed solution;
and 4, coating the mixed solution in a mold, and putting the mold into an oven for curing to obtain the PDMS-BT film.
Wherein the mass ratio of BT to PDMS is 0.123-0.776: 5-10; the curing temperature is 90 deg.C and the curing time is 50 min.
Preferably, the mass ratio of BT to PDMS is 0.13: 5.
Claims (10)
1. the wearable energy collector is characterized by comprising a rectangular cavity (2), wherein at least two key grooves (3) are oppositely arranged on the inner side of the middle part of the cavity (2), an electromagnetic induction coil (4) is wound between the two key grooves (3), a rubidium-iron-boron magnet (6) is arranged in the electromagnetic induction coil (4), and the electromagnetic induction coil (4) is connected with a rectifying circuit c through the cavity (2);
sealing covers are arranged at the top and the bottom of the cavity (2), a PVDF film (1) is vertically arranged on the inner side of the sealing cover at the top, and electrodes on the upper surface and the lower surface of the PVDF film (1) are connected with leads, led out through the sealing covers and connected with a rectifying circuit a; and a friction nano generator is arranged on the sealing cover at the bottom.
2. A wearable energy harvester according to claim 1, characterized in that the cavity (2) and the sealing cover are made of nylon or ABS plastic; the cavity (2) and the sealing cover are bonded through conductive adhesive.
3. The wearable energy harvester of claim 1, wherein the cross section of the rubidium iron boron magnet (6) is rectangular, and the rubidium iron boron magnet (6) is in contact with the cavity (2); gaps are respectively arranged between the rubidium iron boron magnet (6) and the PVDF film (1) and between the rubidium iron boron magnet and the friction nano generator.
4. A wearable energy harvester according to claim 1, characterized in that the PVDF membrane (1) is of inverted dome shape.
5. The wearable energy harvester of claim 1, wherein the friction nano-generator comprises an elliptical ring-shaped PVC film (9), and two opposite inner sides of the PVC film (9) are respectively provided with an upper friction layer and a lower friction layer;
the friction upper layer comprises a polypropylene plate a (7) and a third electrode (8) which are bonded, and the polypropylene plate a (7) is bonded with the inner side of the PVC film (9); the friction lower layer comprises a PDMS-BT film (10), a fourth electrode (11) and a polypropylene plate b (12) which are arranged in sequence from top to bottom, and the fourth electrode (11), the polypropylene plate b (12) and the inner side of the PVC film (9) are bonded in sequence;
and the leads of the third electrode (8) and the fourth electrode (11) are connected with a rectifying circuit b through a rectangular cavity (2).
6. A wearable energy harvester according to claim 5, characterized in that the third and fourth electrodes (8, 11) are nickel, silver electrodes; the surfaces of the third electrode (8) and the fourth electrode (11) are polished by 1000-mesh sand paper to form scratches.
7. A wearable energy harvester according to claim 5, characterized in that the mass volume concentration of barium titanate in the PDMS-BT film (10) is 2.4 wt% -7.2 wt%, and the surface of the PDMS-BT film (10) is sanded with 1500 mesh sandpaper to form a porous structure.
8. A wearable energy harvester according to claim 1, characterized in that the key slot (3) is in the shape of a space key, the key slot (3) body is uniformly provided with at least 8 coil holes, and the coil holes are wound with electromagnetic induction coils (4); the key groove (3) is bonded with the cavity (2) through conductive adhesive.
The preparation method of the PDMS-BT film is characterized by comprising the following steps:
step 1, weighing a proper amount of BT and PDMS;
step 2, fully mixing the BT and the PDMS by using a ball mill to obtain a mixed solution;
3, ultrasonically treating the mixed solution for 1h by using an ultrasonic oscillator to remove bubbles in the mixed solution;
and 4, coating the mixed solution in a mold, and putting the mold into an oven for curing to obtain the PDMS-BT film.
10. The method for preparing a PDMS-BT film according to claim 9, wherein the mass ratio of BT to PDMS is 0.123-0.776: 5-10; the curing temperature is 90 deg.C and the curing time is 50 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114679029A (en) * | 2022-03-15 | 2022-06-28 | 浙江理工大学 | Tumbler type human motion energy harvester |
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