CN113786031A - 3D printing-based graphene-polydimethylsiloxane piezoelectric energy storage insole design method - Google Patents
3D printing-based graphene-polydimethylsiloxane piezoelectric energy storage insole design method Download PDFInfo
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- CN113786031A CN113786031A CN202110991423.4A CN202110991423A CN113786031A CN 113786031 A CN113786031 A CN 113786031A CN 202110991423 A CN202110991423 A CN 202110991423A CN 113786031 A CN113786031 A CN 113786031A
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- 238000010146 3D printing Methods 0.000 title claims abstract description 20
- 239000004205 dimethyl polysiloxane Substances 0.000 title claims abstract description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000004146 energy storage Methods 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 12
- 210000004243 sweat Anatomy 0.000 claims abstract description 10
- 230000001954 sterilising effect Effects 0.000 claims abstract description 7
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims abstract description 4
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract 2
- 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 2
- 239000010410 layer Substances 0.000 claims description 40
- 239000011241 protective layer Substances 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052744 lithium Inorganic materials 0.000 claims description 9
- 238000007639 printing Methods 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000010248 power generation Methods 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 230000000844 anti-bacterial effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 3
- 210000002683 foot Anatomy 0.000 description 9
- 239000002033 PVDF binder Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- -1 Polydimethylsiloxane Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000003371 toe Anatomy 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
- A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A graphene-polydimethylsiloxane piezoelectric energy storage insole design method based on 3D printing relates to the field of energy conversion, and realizes energy conversion of converting mechanical energy generated by sole pressure in a walking process of a person into electric energy. The device is provided with a top protection layer consisting of a sweat absorbing and sterilizing layer and a 3D printing rubber support, a piezoelectric layer consisting of a 3D printing G-PDMS piezoelectric plate, a switch and a USB interface, and a bottom support layer consisting of high-density sponge. The PDMS material used in the invention enables the insole to be more fit with the shape of the sole by utilizing a 3D printing technology, so that the piezoelectric material can be more greatly deformed, and the energy conversion efficiency is further improved.
Description
Technical Field
The invention relates to the field of energy conversion, in particular to a piezoelectric insole made of graphene and PDMS piezoelectric materials based on a 3D printing technology, which realizes energy conversion for converting mechanical energy generated by sole pressure in a human motion process into electric energy.
Background
When a human body walks or does other exercises, the sole of the foot is in contact with the ground to generate mechanical energy, and if the mechanical energy generated by walking can be converted into electric energy to be stored and utilized, the electric energy is a good choice for acquiring energy and can be converted at any time through the motion of the human body. The piezoelectric effect of the piezoelectric material is utilized to generate deformation under the action of pressure, so that the internal resistance value/charge quantity change is caused to generate potential difference, and the conversion of mechanical energy and electric energy is realized.
Conventional piezoelectric insoles employ piezoelectric ceramic (PZT) or polyvinylidene fluoride (PVDF) materials. Because the piezoelectric ceramic has heavy weight and contains heavy metal lead, the piezoelectric ceramic is harmful to human health after long-term use, and the PVDF sensitivity is greatly influenced by temperature. The piezoelectric material Polydimethylsiloxane (PDMS) is adopted, is light and soft, has no toxicity or harm, has stable performance and is suitable for long-term use.
The 3D printing technology is a technology for manufacturing an object by slicing a digital model of a three-dimensional entity and utilizing a computer to control a layer-by-layer printing mode, and the technology is characterized by high design freedom, almost can manufacture articles in any shape and realizes personalized customization. Therefore, the invention adopts a Fused Deposition Modeling (FDM) 3D printing technology to manufacture the rubber protective layer and the G-PDMS piezoelectric plate, so that the insole is more attached to the sole.
The G-PDMS piezoelectric energy storage insole is designed by combining the characteristics of the materials and the manufacturing method, so that the conversion of mechanical energy and electric energy and the storage and utilization of energy are realized.
Disclosure of Invention
The invention designs a G-PDMS piezoelectric energy storage insole manufactured based on a 3D printing technology, which can convert mechanical energy generated by the sole of a foot in a walking process into electric energy to be used as a mobile power supply device.
According to the 3D printing G-PDMS piezoelectric insole device, the top protective layer, the piezoelectric layer and the bottom supporting layer are sequentially arranged from top to bottom.
The top protective layer in the invention is composed of a sweat-absorbing and bacterium-removing layer and a rubber protective layer, wherein the sweat-absorbing and bacterium-removing layer is attached to the top of the rubber protective layer:
the sweat absorbing and bacteria removing layer comprises sponge with a plurality of air holes and bamboo charcoal fiber;
the rubber protective layer is manufactured by adopting a Fused Deposition Modeling (FDM) 3D printing technology, the foot sole shape data is acquired through scanning, then a three-dimensional model is manufactured, slice software is used for guiding the three-dimensional model into a 3D printer, the three-dimensional model is manufactured layer by layer, and the surface of the three-dimensional model is attached to the shape of the foot sole of a human body.
The piezoelectric layer in the invention comprises a power generation module and a control module:
the power generation module comprises a G-PDMS piezoelectric plate, a copper wire and a rubber package, and the control module comprises a switch, a micro lithium battery and a USB interface.
The G-PDMS piezoelectric plate is manufactured by adopting a 3D printing technology. Mixing acrylic resin, graphene and PDMS according to the mass ratio of 0.5:1.5:5, and mechanically stirring the suspension for 1 hour to obtain the printing ink. And (3) extruding by using a nozzle with the diameter of 2mm by adopting an ink 3D printing method, wherein the printing speed is 3mm/s, the inside of the printing plate is of a honeycomb structure, and the printing plate is placed in an environment with the temperature of 80 ℃ for heat preservation and curing for 90 minutes. The prepared piezoelectric plate is placed at the arch and heel, and the upper top end and the lower top end are connected with copper wires.
Preferably, the length of the diagonal line of each honeycomb unit is selected to be 12mm, and the thickness of the line is selected to be 2 mm.
The rubber package is wrapped outside the G-PDMS piezoelectric plate, the thickness of the rubber package is 1mm, and a small hole is formed in one end, close to the control module, of the rubber package.
The copper wire is wrapped by an insulating layer and extends out through a rubber packaging small hole wrapped outside the G-PDMS.
The switch, the miniature lithium battery and the USB interface are connected in series with the G-PDMS piezoelectric plate through a lead to form a closed circuit.
The bottom supporting layer is made of rubber and is adhered below the piezoelectric layer.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the piezoelectric material adopts a novel piezoelectric material G-PDMS, and compared with piezoelectric ceramics and PVDF, the component is lighter and softer, has stable function and is harmless to the body after long-term use.
2. The top protective layer and the piezoelectric layer are manufactured by using a 3D printing technology, lines of the top protective layer and the piezoelectric layer are extremely attached to the shape of the sole of a foot, the contact area of a piezoelectric material and the sole of the foot is increased, and the energy conversion efficiency of mechanical energy-electric energy is improved. And the sole can be perfectly wrapped, and the sole is soft and comfortable.
Drawings
FIG. 1 is an exploded view of a G-PDMS piezoelectric insole device based on 3D printing technology;
FIG. 2 is a schematic side sectional view of a top protective layer;
FIG. 3 is a schematic cross-sectional side view of a piezoelectric layer;
FIG. 4 is a basic circuit diagram of the piezoelectric insole device;
FIG. 5 is a schematic diagram of the application of force to the honeycomb structural unit in an example, showing a sinusoidal curve with time, a pressure peak of 10kPa, a period of 2s, and an application time of 1 s;
FIG. 6 is a schematic view of the deformation of the upper surface of a simulated honeycomb structural unit when subjected to a pressure of 10 kPa;
FIG. 7 is a graph of the potential difference generated between the upper and lower surfaces of the cavity as a function of time when the honeycomb structural unit is subjected to the pressure as shown in FIG. 5;
in the figure: 1-sweat-absorbing and bacterium-removing layer, 2-rubber protective layer, 3-piezoelectric layer and 4-rubber supporting layer;
31-G-PDMS piezoelectric plate, 32-USB interface, 33-switch, 34-micro lithium battery, 35-rubber sealing layer.
Detailed Description
In order to more clearly disclose the objects, principles and technical solutions of the present invention, the following description is further provided with reference to the embodiments and the accompanying drawings. It should be understood that the examples are only for illustrating the invention in further detail, and are not to be construed as limiting the invention, which should not be construed as limiting the scope of the invention.
In this embodiment, the insole device shown in fig. 1 is taken as an example for explanation, when a person walks, the pressure applied to the heel is the largest, and then the part from the arch to the toes is arranged, so that a G-PDMS piezoelectric plate is arranged below the two parts, mechanical energy generated by the sole of the person during walking is converted into electric energy, the electric energy is collected by a lithium battery and is connected with a USB interface for utilization, and a switch is added to control the output of the electric energy, so that the whole device realizes the recovery and utilization of the energy, and the purpose of saving energy is achieved.
As shown in fig. 2, the top protection layer of the present invention comprises a sweat absorbing and sterilizing layer 1 and a rubber protection layer 2, wherein the sweat absorbing and sterilizing layer 1 is made of high density sponge and bamboo charcoal fiber, the rubber protection layer 2 is made of 3D printing, and is attached to the heel and sole of the sweat absorbing and sterilizing layer 1 in a shape fitting the shape of the sole of a foot, such that the contact area between the sole of the foot and the piezoelectric material is increased, and the energy conversion efficiency is improved. The sweat-absorbing and bacterium-removing layer 1 can achieve the effects of absorbing sweat and removing bacteria, and prevent foot sweat pollution.
As shown in fig. 3, the G-PDMS piezoelectric plate 31 of the present invention is also located at the heel and sole, and a control module, i.e. a USB interface 32, a switch 33 and a micro lithium battery 34, is arranged between the two piezoelectric plates, and is connected in series with the G-PDMS piezoelectric plate through a copper wire in sequence. The honeycomb structure inside the G-PDMS piezoelectric plate 31 is deformed by pressure, charges on the surface of the cavity inside the hole are transferred to generate a potential difference, the potential difference is collected by a lead into the micro lithium battery 34 to be stored, and the switch 33 can control the electric quantity to be released from the USB interface 32 to be connected with electric appliances such as a small bulb and a mobile phone for use. In addition, the honeycomb structure has good recovery property after being deformed by pressure, has stable structure and can be used for a long time.
In the invention, the bottom supporting layer 4 is made of rubber and has the function of buffering pressure with the sweat absorbing and sterilizing layer 1.
According to the graphene-polydimethylsiloxane (G-PDMS) piezoelectric plate based on 3D printing, mechanical energy generated by contact of a sole and the ground when a person moves enables the G-PDMS piezoelectric plate to bear pressure and deform downwards, a honeycomb cavity of the G-PDMS piezoelectric plate is in contact with the ground and generates charge transfer, a potential difference is generated between an upper cavity and a lower cavity, the potential difference is transmitted to a lithium battery through a lead and collected, and the output of electric energy is controlled through a switch. The scientific technology is closely related to energy conversion and energy protection.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (5)
1. The piezoelectric insole device is characterized by comprising a top protective layer, a piezoelectric layer and a bottom supporting layer, and specifically comprises:
the top protective layer comprises a sweat absorbing and sterilizing layer and a rubber protective layer;
the piezoelectric layer is adhered below the top protective layer and is divided into a power generation module and a control module, the power generation module comprises a piezoelectric plate, a rubber packaging layer and a copper wire, the upper end and the lower end of the piezoelectric plate are connected with the copper wire, an insulating layer is attached outside the copper wire,
the bottom support layer is adhered to the underside of the piezoelectric layer and is a rubber material.
2. The piezoelectric insole device according to claim 1, wherein the top protective layer and the sweat absorbing and sterilizing layer comprise sponge and bamboo charcoal fiber antibacterial layers and are located on the whole sole; and a rubber protective layer is provided at the arch and heel positions.
3. The piezoelectric insole device according to claim 1, wherein the rubber packaging layer is wrapped in the piezoelectric plate, and one end of the rubber packaging layer close to the control module is provided with a small hole and is penetrated by a copper wire.
4. The piezoelectric insole device according to claim 1, wherein the control module comprises a lithium battery, a switch and a USB interface, and the micro lithium battery, the switch and the USB interface are connected with the piezoelectric plate in series through copper wires.
5. The piezoelectric insole device according to claim 1, wherein the piezoelectric plate is manufactured by 3D printing with ink, acrylic resin, graphene and PDMS are mixed according to a mass ratio of 0.5:1.5:5, and the suspension is mechanically stirred for 1 hour to obtain printing ink; and (3) extruding by using a nozzle with the diameter of 2mm by adopting an ink 3D printing method, wherein the printing speed is 3mm/s, the inside of the printing plate is of a honeycomb structure, and the printing plate is placed in an environment with the temperature of 80 ℃ for heat preservation and curing for 90 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110991423.4A CN113786031A (en) | 2021-08-26 | 2021-08-26 | 3D printing-based graphene-polydimethylsiloxane piezoelectric energy storage insole design method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110991423.4A CN113786031A (en) | 2021-08-26 | 2021-08-26 | 3D printing-based graphene-polydimethylsiloxane piezoelectric energy storage insole design method |
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|---|---|
| CN113786031A true CN113786031A (en) | 2021-12-14 |
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| CN202110991423.4A Pending CN113786031A (en) | 2021-08-26 | 2021-08-26 | 3D printing-based graphene-polydimethylsiloxane piezoelectric energy storage insole design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110109203A1 (en) * | 2009-11-06 | 2011-05-12 | The Trustees Of Princeton University | Flexible piezoelectric structures and method of making same |
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-
2021
- 2021-08-26 CN CN202110991423.4A patent/CN113786031A/en active Pending
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Application publication date: 20211214 |