CN111504519B - Flexible cable type touch sensor - Google Patents

Flexible cable type touch sensor Download PDF

Info

Publication number
CN111504519B
CN111504519B CN202010310828.2A CN202010310828A CN111504519B CN 111504519 B CN111504519 B CN 111504519B CN 202010310828 A CN202010310828 A CN 202010310828A CN 111504519 B CN111504519 B CN 111504519B
Authority
CN
China
Prior art keywords
foam
mixture
electrode layer
flexible cable
electrolyte layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010310828.2A
Other languages
Chinese (zh)
Other versions
CN111504519A (en
Inventor
孟垂舟
王鹏
孙桂芬
张昊天
高建卫
郭士杰
李国显
周鸿超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei University of Technology
Original Assignee
Hebei University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei University of Technology filed Critical Hebei University of Technology
Priority to CN202010310828.2A priority Critical patent/CN111504519B/en
Publication of CN111504519A publication Critical patent/CN111504519A/en
Application granted granted Critical
Publication of CN111504519B publication Critical patent/CN111504519B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
    • G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors

Abstract

The invention provides a flexible cable type touch sensor which comprises a foam inner electrode layer, a foam electrolyte layer and a foam outer electrode layer which are integrally arranged from inside to outside in a tubular shape, wherein the foam electrolyte layer is prepared by foaming a mixture comprising a solvent, a high polymer material, esters, an ion carrier and bacterial cellulose, the mass ratio of the foam electrolyte layer to the foam electrolyte layer is (25-30): (3-4): (4-6): (1-2): (0.4-0.6), the materials of the foam inner electrode layer and the foam outer electrode layer are the same, and the foam electrolyte layer and the foam outer electrode layer are prepared by foaming a mixture comprising a solvent, a high polymer material, esters, a conductive material and bacterial cellulose, and the mass ratio of the foam electrolyte layer to the foam outer electrode layer is (25-30): (3-4): (4-6): (3-4): 0.4-0.6). The flexible cable type touch sensor can be made into a hollow structure to be coated on a microwire or a microcatheter and is applied to wind speed and direction detection, various liquid flow rate monitoring and the like; the sensor can also be made into a solid structure, and a plurality of sensors can be woven into a cloth shape or a net shape to be applied to wearable equipment such as gloves and clothes or robots such as dexterous hands.

Description

Flexible cable type touch sensor
Technical Field
The invention belongs to the technical field of sensors, and particularly relates to a flexible cable type touch sensor.
Background
In recent years, the flexible development of the touch sensor enables a person to accurately sense physiological signals and activity information of the person, such as heartbeat, pulse, movement pressure and the like, in real time without interfering or limiting the movement of the person wearing the sensor, so that the touch sensor has great potential application value in the fields of electronic skin, human-computer interfaces, flexible touch display, intelligent robots and the like, and is widely concerned. However, the existing touch sensor structures are all in a planar form, and are limited by the geometric shape of an application scene in the actual use process, and cannot be flexibly adjusted according to the use environment. For example, the sensor is placed in the fluid to swing along with the fluid to detect wind direction and speed or fluid flow rate, or a cloth-shaped or net-shaped sensor with a pore structure and a ventilation function is woven to be better attached to the skin of a human body for use, and the like. Therefore, the development of a novel cable type tactile sensor is of great practical significance.
Disclosure of Invention
In view of this, the present invention is directed to a flexible cable type tactile sensor, which has the advantages of integrated electrode and electrolyte structure, flexible mechanical properties, and stretchability, and the parameters of the structure, size, dimension, length, and the like can be adjusted and controlled, so as to meet the specific application requirements of different application scenarios.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a flexible cable type touch sensor comprises a foam inner electrode layer, a foam electrolyte layer and a foam outer electrode layer which are integrally arranged from inside to outside in a tubular shape, wherein the foam electrolyte layer is prepared by foaming a mixture comprising a solvent, a high polymer material, an ester, an ionophore and bacterial cellulose, the mass ratio of the foam electrolyte layer to the foam electrolyte layer is (25-30): (3-4): (4-6): (1-2): (0.4-0.6), the materials of the foam inner electrode layer and the foam outer electrode layer are the same, and the foam electrolyte layer and the foam outer electrode layer are prepared by foaming a mixture comprising a solvent, a high polymer material, an ester, a conductive material and bacterial cellulose, and the mass ratio of the foam electrolyte layer to the foam outer electrode layer is (25-30): (3-4): (4-6): (3-4): 0.4-0.6).
The bacterial cellulose is a porous meshed nano-scale biopolymer synthesized by microbial fermentation, can enhance the tensile resistance of an electrode and an electrolyte, and has the following principle: the hydrogen bonds between the bacterial cellulose and the polyvinyl alcohol form a double-net structure, and stress can be transferred at the fastest speed.
Preferably, the solvent is water or an ionic liquid, wherein the ionic liquid is liquid at or near room temperature and is a salt consisting entirely of organic cations including, but not limited to, quaternary ammonium ions, quaternary phosphonium ions, imidazolium ions, pyrrole ions and inorganic or organic anions including, but not limited to, halogen ions, tetrafluoroborate ions, hexafluorophosphate ions.
Preferably, the polymer material includes, but is not limited to, polyvinyl alcohol (PVA), thermoplastic polyurethane elastomer (TPU), or polystyrene (EPS).
Preferably, the esters include, but are not limited to, one or a mixture of two or more of Propylene Carbonate (PC), Ethylene Carbonate (EC), Ethyl Methyl Carbonate (EMC), dimethyl carbonate (DMC), and ethylene carbonate (DEC).
Preferably, the ionic carrier is one or a mixture of more than two of acid, alkali and salt, preferably one or a mixture of more than two of sulfuric acid, phosphoric acid, sodium hydroxide, potassium hydroxide, sodium sulfate and sodium bicarbonate.
Preferably, the conductive material is metal, carbon or conductive polymer, including but not limited to copper, aluminum, gold, silver, nickel, graphite, acetylene black, carbon nanotube, graphene, MXene, polypyrrole, polythiophene, or a composite of two or more thereof.
The invention also provides a preparation method of the flexible cable type touch sensor, which comprises the following steps:
(1) preparation of foamed inner electrode layer
Mixing water, bacterial cellulose and a high polymer material, adding an ionophore, heating for 1-2 hours at 80-100 ℃, cooling to 75 ℃ after the high polymer material is completely dissolved, adding an emulsifier and esters, stirring for reaction for 2.5 hours, adding a conductive material, stirring to be in a uniform state, cooling to 35 ℃, adding a foaming agent, quickly stirring uniformly, pouring into a mold, and putting into a refrigerator to freeze until the mixture is solidified to be used as a foam inner electrode layer;
(2) preparation of foamed electrolyte layer
Mixing water, bacterial cellulose and a high polymer material, adding an ionophore, heating for 1-2 hours at 80-100 ℃, cooling to 75 ℃ after the high polymer material is completely dissolved, adding an emulsifier and esters, stirring uniformly, cooling to 35 ℃, adding a foaming agent, rapidly stirring uniformly, pouring into a mold, and putting into a refrigerator to freeze until the foaming agent is solidified to form a foam electrolyte layer;
(3) preparation of foam outer electrode layer
Mixing water, bacterial cellulose and a high polymer material, adding an ionophore into the mixture, heating the mixture for 1 to 2 hours at the temperature of between 80 and 100 ℃, cooling the mixture to 75 ℃ after the high polymer material is completely dissolved, adding an emulsifier and esters into the mixture, stirring the mixture for reaction for 2.5 hours, adding a conductive material into the mixture, stirring the mixture to be in a uniform state, cooling the mixture to 35 ℃, adding a foaming agent into the mixture, quickly and uniformly stirring the mixture, pouring the mixture into a mold to serve as an outer foam electrode layer, integrally putting the outer foam electrode layer into a refrigerator, freezing the mixture for 7 hours, melting the mixture for 3 hours, and repeatedly carrying out three cycles to obtain the porous integrated flexible cable type touch sensor;
(4) wiring of sensor
And the foam inner electrode layer and the foam outer electrode layer are respectively connected with a conductive lead, so that the sensor is electrically connected with the outside.
Preferably, the mold used in the preparation method comprises a base and a plurality of concentric cylindrical molds detachably fixed on the base, the mold base is provided with a plurality of annular grooves for fixing the cylindrical molds, and the center of each annular groove is provided with a mold support. The mold is made of nylon with freezing resistance through a 3D printing process.
The basic working principle of the sensor of the invention is as follows:
as shown in fig. 4 and 5, the foam inner electrode layer, the foam outer electrode layer, the foam inner electrode layer and the foam electrolyte layer constitute a flexible cable type tactile sensor, when pressure is applied to the sensor, the mesh-shaped foam outer electrode layer, the foam inner electrode layer and the foam electrolyte layer of the sensor are all deformed under the action of the pressure, so that the contact area between the foam electrolyte layer and the electrodes is enlarged, the distance is reduced, and the capacitance is increased; when the pressure disappears, the mesh-shaped foam inner electrode layer, the mesh-shaped foam outer electrode layer and the foam electrolyte layer can restore to the original state, and the capacitance can also restore to the original value. The change of the capacitance can be converted into an electric signal and transmitted to a subsequent processing circuit, so that the force is monitored.
The foam inner electrode layer, the foam outer electrode layer and the foam electrolyte layer form an electrode or electrolyte interface, when the foam inner electrode layer and the foam electrolyte layer are in contact with two sides of the foam electrolyte layer, under the action of an external power supply, internal surface charges of the electrode can adsorb ions from the electrolyte, the ions form an interface layer with the same charge quantity as that of the internal surface of the electrode and the opposite sign on the electrolyte side of the electrode or the electrolyte interface, and due to the potential difference existing on the electrode or the electrolyte interface, the charges of the two layers cannot cross the boundary and are neutralized with each other, so that the super capacitor with a stable structure is formed.
Foaming and freezing a mixture consisting of a high polymer material, bacterial cellulose, esters and conductive substances (such as graphene, MXene, CNT and the like) to form foamed inner and outer electrode layers, mixing an electrolyte (such as phosphoric acid, sodium hydroxide and sodium carbonate solution) with the high polymer material and the esters, then foaming, freezing to prepare a mesh-shaped foamed electrolyte layer, and freezing the foamed inner and outer electrode layers and the foamed electrolyte layer together to combine the foamed inner and outer electrode layers and the foamed electrolyte layer into a whole. And connecting the prepared sensor to a capacitance measuring circuit to realize pressure mapping. The three parts of the process are all obtained after freezing, and the preparation process is simple and quick.
Compared with the prior art, the flexible cable type touch sensor has the following advantages:
(1) the sensor provided by the invention has a wide application range. The flexible cable type touch sensor can be made into a hollow structure or a solid structure, can be applied to flow rate monitoring of various liquids, and can be applied to wearable equipment such as gloves and clothes.
(2) The sensor has high tensile rate. The stretching rates of the electrode and the electrolyte layer of the flexible cable type touch sensor are both larger than 300%, and the movement with larger deformation can be monitored, so that the application range of the sensor is widened.
(3) The sensor has good associativity and no gap. The electrode and the electrolyte layer of the flexible cable type touch sensor are both of a foam structure and made of high polymer materials, and are formed in one step in the manufacturing process, gaps do not exist among the layers, and the electrodes and the electrolyte layer are combined without external force.
(4) The sensor provided by the invention is simple in manufacturing process and flexible in size adjustment. The three parts of the flexible cable type touch sensor are all manufactured after freezing and thawing, other special production requirements are not needed, the diameter of the sensor can be adjusted according to the use environment, the length of the sensor can be directly cut, and the structure of the sensor cannot be damaged in the cutting process, so that the use is not influenced.
Drawings
FIG. 1a is an overall schematic view of a hollow core sensor of the present invention; FIG. 1b is an overall schematic view of a solid sensor of the present invention;
FIG. 2a is a schematic cross-sectional view of a hollow core sensor according to the present invention; FIG. 2b is a schematic cross-sectional view of a solid sensor according to the present invention;
FIG. 3a is a schematic view of a mold for making a hollow sensor according to the present invention; FIG. 3b is a schematic view of a mold for manufacturing a solid sensor according to the present invention;
FIG. 4a is a schematic representation of the hollow core sensor of the present invention prior to compression; FIG. 4b is a schematic representation of the solid sensor of the present invention prior to compression; FIG. 5a is a schematic representation of the compressed hollow sensor of the present invention; FIG. 5b is a schematic representation of the solid sensor of the present invention after compression;
fig. 6 shows the capacitance values of the sensor of the present invention at different pressures.
In the figure: 1. a foam outer electrode layer; 2. a foamed electrolyte layer; 3. a foam inner electrode layer; 21. a mold base; 22. an outer cylinder of the mold; 23. a mold middle cylinder; 24. an inner mold cylinder; 25. supporting a mould; 26. an annular groove.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meanings as commonly understood by one of ordinary skill in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The bacterial cellulose used in the embodiment of the invention is purchased from Beijing Youlan science and technology Limited, and the particle size is 70-150 microns and 100 meshes.
The present invention will be described in detail with reference to the following examples and accompanying drawings.
Example 1
The embodiment provides a hollow flexible cable type touch sensor based on a super-capacitor sensing principle, which is used for monitoring the flow rate of liquid, and as shown in fig. 1 and fig. 2, the sensor sequentially comprises a foam outer electrode layer 1, a foam middle dielectric layer 2, a foam inner electrode layer 3, a foam electrolyte layer, an inner foam electrode layer and an outer foam electrode layer from outside to inside to form the sensor.
The sensor manufactured in the embodiment is a foam-shaped, integrated and three-layer structure, is frozen and then is formed in one step, the whole length is 10mm, the diameter of the tube is 2mm, the thickness of the foam inner electrode layer is 3 mm, the thickness of the foam electrolyte layer is 2mm, and the thickness of the foam outer electrode layer is 1 mm; the electrode layer is of a mesh foam structure and is prepared by mixing conductive material graphene, calcium carbonate, PVA and dimethyl carbonate according to a certain proportion, foaming and freezing; the electrolyte layer is a mesh foam structure and is obtained by mixing electrolyte calcium carbonate, PVA and dimethyl carbonate, foaming and freezing.
The manufacturing process of the flexible cable type touch sensor based on the super-capacitor sensing principle is as follows:
1. production of foam inner electrode layer
According to H2And O, weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27% of the total mass of the solution, adding graphene accounting for 11.33% of the total mass of the solution, uniformly stirring, cooling the water bath kettle to 60 ℃, adding OP-10 accounting for 5.66% of the total mass of the solution, stirring dimethyl carbonate accounting for 6.80% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66% of the total mass of the solution, vigorously stirring, pouring the mixture into a mold, putting the mold into a refrigerator, and freezing the mixture for 1 minute at-40 ℃ until the mixture is solidified to form an inner electrode layer of foam.
2. Preparation of foam ionic gel layer
According to H2Weighing the PVA and the bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, and stirring the mixture by magnetic forceCovering the mouth of the beaker by using tinfoil, putting the beaker into a magnetic water bath, heating the beaker at the temperature of 80-100 ℃ for 1-2 hours until PVA is completely dissolved, cooling the water bath to 66 ℃, adding calcium carbonate accounting for 2.55% of the total mass of the solution, uniformly stirring, cooling the water bath to 60 ℃, adding OP-10 accounting for 6.39% of the total mass of the solution and dimethyl carbonate accounting for 7.66% of the total mass of the solution, stirring for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 6.39% of the total mass of the solution, vigorously stirring, pouring the mixture into a mold, and putting the mold into a refrigerator at the temperature of-40 ℃ for freezing for 1 minute until the mixture is solidified to be used as a foam electrolyte layer.
3. Manufacture of foamed outer electrode layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27 percent of the total mass of the solution, adding graphene accounting for 11.33 percent of the total mass of the solution, cooling the water bath kettle to 60 ℃ after uniformly stirring, adding OP-10 accounting for 5.66 percent of the total mass of the solution, stirring the dimethyl carbonate accounting for 6.80 percent of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66 percent of the total mass of the solution, violently stirring, pouring the mixture into a mold to serve as an outer foam electrode layer, freezing the whole at-40 ℃ for 7 hours and 3 hours after melting, and repeating the three cycles to obtain the integrated flexible cable type touch sensor with the hole shape.
Example 2
The embodiment provides a hollow flexible cable type touch sensor based on a super-capacitor sensing principle, which is used for monitoring the flow rate of liquid, and as shown in fig. 1 and fig. 2, the sensor sequentially comprises a foam outer electrode layer 1, a foam middle dielectric layer 2, a foam inner electrode layer 3, a foam electrolyte layer, an inner foam electrode layer and an outer foam electrode layer from outside to inside to form the sensor.
The sensor manufactured in the embodiment is a foam-shaped, integrated and three-layer structure, is frozen and then is formed in one step, the whole length is 10mm, the diameter of the tube is 2mm, the thickness of the foam inner electrode layer is 3 mm, the thickness of the foam electrolyte layer is 2mm, and the thickness of the foam outer electrode layer is 1 mm; the electrode layer is of a mesh foam structure and is prepared by mixing conductive material graphite, calcium carbonate, PVA and dimethyl carbonate according to a certain proportion, foaming and freezing; the electrolyte layer is a mesh foam structure and is obtained by mixing electrolyte calcium carbonate, PVA and dimethyl carbonate, foaming and freezing.
The manufacturing process of the hollow flexible cable type touch sensor based on the super-capacitor sensing principle is as follows:
1. production of foam inner electrode layer
According to H2And O, weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27% of the total mass of the solution, adding graphite accounting for 11.33% of the total mass of the solution, cooling the water bath kettle to 60 ℃ after uniformly stirring, adding OP-10 accounting for 5.66% of the total mass of the solution, stirring dimethyl carbonate accounting for 6.80% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66% of the total mass of the solution, violently stirring, pouring the mixture into a mold, and putting the mixture into a refrigerator at-40 ℃ for freezing for 1 minute until the mixture is solidified to be used as an inner electrode layer of foam.
2. Preparation of foam ionic gel layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.55 percent of the total mass of the solution, uniformly stirring the mixture, cooling the water bath kettle to 60 ℃, adding OP-10 accounting for 6.39 percent of the total mass of the solution, stirring the dimethyl carbonate accounting for 7.66 percent of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 6.39 percent of the total mass of the solution, violently stirring the mixture into a mold, and freezing the mixture in a freezer at-40 ℃ for 1-3The minute to solidification as a foamed electrolyte layer.
3. Manufacture of foamed outer electrode layer
According to H2O: PVA: weighing bacterial cellulose at a ratio of 5:1:0.3, mixing the bacterial cellulose and the bacterial cellulose, adding the mixture into a beaker, putting a magnetic stirrer, covering the opening of the beaker with tinfoil, putting the beaker into a magnetic water bath, heating for 1-2 hours at the temperature of 80-100 ℃ until PVA is completely dissolved, then cooling the water bath to 66 ℃, adding calcium carbonate accounting for 2.27 percent of the total mass of the solution, adding graphite accounting for 11.33 percent of the total mass of the solution, stirring evenly, cooling the water bath to 60 deg.C, adding OP-10 accounting for 5.66% of the total mass of the solution and dimethyl carbonate accounting for 6.80% of the total mass of the solution, stirring for 2 min, cooling the water bath to 35 deg.C, adding n-pentane accounting for 5.66% of the total mass of the solution, stirring vigorously, pouring into a mold as an outer electrode layer of foam, freezing in a freezer at-40 deg.C for 7 hr, melting for 3 hours, and repeating three cycles to obtain the integrated cable type stretchable touch sensor with the hole shape.
Example 3
The embodiment provides a hollow flexible cable type touch sensor based on a super-capacitor sensing principle, which is used for monitoring the flow rate of liquid, and as shown in fig. 1 and fig. 2, the sensor sequentially comprises a foam outer electrode layer 1, a foam middle dielectric layer 2, a foam inner electrode layer 3, a foam electrolyte layer, an inner foam electrode layer and an outer foam electrode layer from outside to inside to form the sensor.
The sensor manufactured in the embodiment is a foam-shaped, integrated and three-layer structure, is frozen and then is formed in one step, the whole length is 10mm, the diameter of the tube is 2mm, the thickness of the foam inner electrode layer is 3 mm, the thickness of the foam electrolyte layer is 2mm, and the thickness of the foam outer electrode layer is 1 mm; the electrode layer is of a mesh foam structure and is prepared by mixing conductive material graphene, calcium carbonate, PVA and dimethyl carbonate according to a certain proportion, foaming and freezing; the electrolyte layer is a mesh foam structure and is prepared by mixing electrolyte sodium hydroxide and sodium bicarbonate with PVA and dimethyl carbonate, foaming and freezing.
The manufacturing process of the hollow flexible cable type touch sensor based on the super-capacitor sensing principle is as follows:
1. production of foam inner electrode layer
According to H2And O, weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27% of the total mass of the solution, adding graphene accounting for 11.33% of the total mass of the solution, uniformly stirring, cooling the water bath kettle to 60 ℃, adding OP-10 accounting for 5.66% of the total mass of the solution, stirring dimethyl carbonate accounting for 6.80% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66% of the total mass of the solution, vigorously stirring, pouring the mixture into a mold, putting the mold into a refrigerator, and freezing the mixture for 1 minute at-40 ℃ until the mixture is solidified to form an inner electrode layer of foam.
2. Preparation of foam ionic gel layer
According to H2And O, weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding sodium hydroxide and sodium bicarbonate (1:1) which account for 2.55% of the total mass of the solution, cooling the water bath kettle to 60 ℃ after uniformly stirring, adding OP-10 which accounts for 6.39% of the total mass of the solution, stirring dimethyl carbonate which accounts for 7.66% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane which accounts for 6.39% of the total mass of the solution, stirring vigorously, pouring the mixture into a mold, and freezing the mixture in a freezer at-40 ℃ for 1 minute until the mixture is solidified to form a foamed electrolyte layer.
3. Manufacture of foamed outer electrode layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the opening of the beaker with tinfoil, putting the beaker into a magnetic water bath, heating for 1-2 hours at 80-100 ℃, cooling the water bath to 66 ℃, and adding a solutionAdding calcium carbonate accounting for 11.33% of the total mass of the solution into calcium carbonate accounting for 2.27% of the total mass of the solution, uniformly stirring, cooling a water bath to 60 ℃, adding OP-10 accounting for 5.66% of the total mass of the solution and dimethyl carbonate accounting for 6.80% of the total mass of the solution, stirring for 2 minutes, cooling a water bath to 35 ℃, adding n-pentane accounting for 5.66% of the total mass of the solution, stirring vigorously, pouring the mixture into a mold to serve as an outer foam electrode layer, putting the whole into a refrigerator at the temperature of-40 ℃, freezing for 7 hours, melting for 3 hours, and repeatedly carrying out three cycles to obtain the porous integrated cable type stretchable touch sensor.
Example 4
The embodiment provides a hollow flexible cable type touch sensor based on a super-capacitor sensing principle, which is used for monitoring the flow rate of liquid, and as shown in fig. 1 and fig. 2, the sensor sequentially comprises a foam outer electrode layer 1, a foam middle dielectric layer 2, a foam inner electrode layer 3, a foam electrolyte layer, an inner foam electrode layer and an outer foam electrode layer from outside to inside to form the sensor.
The sensor manufactured in the embodiment is a foam-shaped, integrated and three-layer structure, is frozen and then is formed in one step, the whole length is 10mm, the diameter of the tube is 2mm, the thickness of the foam inner electrode layer is 3 mm, the thickness of the foam electrolyte layer is 2mm, and the thickness of the foam outer electrode layer is 1 mm; the electrode layer is of a mesh foam structure and is prepared by mixing conductive material graphene, calcium carbonate, PVA and ethylene carbonate according to a certain proportion, foaming and freezing; the electrolyte layer is a mesh foam structure and is obtained by mixing electrolyte calcium carbonate with PVA and ethylene carbonate, foaming and freezing.
The manufacturing process of the hollow flexible cable type touch sensor based on the super-capacitor sensing principle is as follows:
1. production of foam inner electrode layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27 percent of the total mass of the solution,adding 11.33 percent of graphene accounting for the total mass of the solution, after uniformly stirring, cooling a water bath to 60 ℃, adding 5.66 percent of OP-10 accounting for the total mass of the solution and 6.80 percent of ethylene carbonate accounting for the total mass of the solution, stirring for 2 minutes, cooling a water bath to 35 ℃, adding 5.66 percent of n-pentane accounting for the total mass of the solution, stirring vigorously, pouring into a mold, and putting into a refrigerator at-40 ℃ for freezing for 1 minute until the mixture is solidified to be used as a foam inner electrode layer.
2. Preparation of foam ionic gel layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.55% of the total mass of the solution, uniformly stirring, cooling the water bath kettle to 60 ℃, adding OP-10 accounting for 6.39% of the total mass of the solution, stirring the solution with ethylene carbonate accounting for 7.66% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 6.39% of the total mass of the solution, vigorously stirring the solution into a mold, and freezing the solution in a freezer at-40 ℃ for 1 minute until the solution is solidified to form a foamed electrolyte layer.
3. Manufacture of foamed outer electrode layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27 percent of the total mass of the solution, adding graphene accounting for 11.33 percent of the total mass of the solution, cooling the water bath kettle to 60 ℃ after uniformly stirring, adding OP-10 accounting for 5.66 percent of the total mass of the solution, stirring the vinyl carbonate accounting for 6.80 percent of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66 percent of the total mass of the solution, violently stirring, pouring the mixture into a mold to serve as an outer foam electrode layer, freezing the whole at-40 ℃ for 7 hours and 3 hours after melting, three cycles are repeated to obtain the porous integrated electricityThe cable type stretchable touch sensor.
Example 5
The embodiment provides a hollow flexible cable type touch sensor based on a super-capacitor sensing principle, which is used for monitoring the flow rate of liquid, and as shown in fig. 1 and fig. 2, the sensor sequentially comprises a foam outer electrode layer 1, a foam middle dielectric layer 2, a foam inner electrode layer 3, a foam electrolyte layer, an inner foam electrode layer and an outer foam electrode layer from outside to inside to form the sensor.
The sensor manufactured in the embodiment is a foam-shaped, integrated and three-layer structure, is frozen and then is formed in one step, the whole length is 10mm, the diameter of the tube is 2mm, the thickness of the foam inner electrode layer is 3 mm, the thickness of the foam electrolyte layer is 2mm, and the thickness of the foam outer electrode layer is 1 mm; the electrode layer is of a mesh foam structure and is prepared by mixing conductive material graphene, calcium carbonate, PVA and dimethyl carbonate according to a certain proportion, foaming and freezing; the electrolyte layer is a mesh foam structure and is obtained by mixing electrolyte calcium carbonate, PVA and dimethyl carbonate, foaming and freezing.
The manufacturing process of the hollow flexible cable type touch sensor based on the super-capacitor sensing principle is as follows:
1. production of foam inner electrode layer
According to H2And O, weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.14% of the total mass of the solution, adding graphene accounting for 16.08% of the total mass of the solution, uniformly stirring, cooling the water bath kettle to 60 ℃, adding OP-10 accounting for 5.36% of the total mass of the solution, stirring dimethyl carbonate accounting for 6.43% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.36% of the total mass of the solution, vigorously stirring, pouring the mixture into a mold, and putting the mold into a refrigerator at-40 ℃ for freezing for 1 minute until the mixture is solidified to form an inner electrode layer of foam.
2. Preparation of foam ionic gel layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.55% of the total mass of the solution, uniformly stirring, cooling the water bath kettle to 60 ℃, adding OP-10 accounting for 6.39% of the total mass of the solution, stirring dimethyl carbonate accounting for 7.66% of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 6.39% of the total mass of the solution, vigorously stirring, pouring the mixture into a mold, and freezing the mixture in a freezer at-40 ℃ for 1 minute until the mixture is solidified to form a foamed electrolyte layer.
3. Manufacture of foamed outer electrode layer
According to H2O: PVA: weighing bacterial cellulose at a ratio of 5:1:0.3, mixing the bacterial cellulose and the bacterial cellulose, adding the mixture into a beaker, putting a magnetic stirrer, covering the opening of the beaker with tinfoil, putting the beaker into a magnetic water bath, heating for 1-2 hours at the temperature of 80-100 ℃ until PVA is completely dissolved, then cooling the water bath to 66 ℃, adding calcium carbonate accounting for 2.14 percent of the total mass of the solution, adding graphene accounting for 16.08 percent of the total mass of the solution, stirring uniformly, cooling the water bath to 60 ℃, adding OP-10 accounting for 5.36 percent of the total mass of the solution and dimethyl carbonate accounting for 6.43 percent of the total mass of the solution, stirring for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.36 percent of the total mass of the solution, stirring vigorously, pouring into a mold to serve as an outer foam electrode layer, putting the whole into a freezer at the temperature of minus 40 ℃ for freezing for 7 hours, melting for 3 hours, and repeating three cycles to obtain the integrated cable type stretchable touch sensor with the hole shape. As shown in fig. 3, the mold used in this embodiment includes a base and three concentric cylindrical molds detachably disposed on the mold base 21, which are respectively the mold outer cylinder 22, the mold middle cylinder 23, and the mold inner cylinder 24, the mold base 21 is provided with a plurality of annular grooves 26 for fixing the mold cylinders, and a mold support 25 is disposed at the center of the annular grooves 26. The mold is made of nylon with freezing resistance through a 3D printing process.
Example 6
The embodiment provides a solid flexible cable type touch sensor based on a super-capacitor sensing principle, which is used for monitoring the flow rate of liquid, and as shown in fig. 1 and fig. 2, the sensor sequentially comprises a foam outer electrode layer 1, a foam middle dielectric layer 2, a foam inner electrode layer 3, a foam electrolyte layer, an inner foam electrode layer and an outer foam electrode layer from outside to inside to form the sensor.
The sensor manufactured in the embodiment is a foam-shaped, integrated and three-layer structure, is frozen and then is formed in one step, the whole length is 10mm, the diameter of the tube is 2mm, the thickness of the foam inner electrode layer is 3 mm, the thickness of the foam electrolyte layer is 2mm, and the thickness of the foam outer electrode layer is 1 mm; the electrode layer is of a mesh foam structure and is prepared by mixing conductive material graphene, calcium carbonate, PVA and ethylene carbonate according to a certain proportion, foaming and freezing; the electrolyte layer is a mesh foam structure and is obtained by mixing electrolyte calcium carbonate with PVA and ethylene carbonate, foaming and freezing.
The manufacturing process of the solid flexible cable type touch sensor based on the super-capacitor sensing principle is as follows:
1. production of foam inner electrode layer
According to H2And O, weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27% of the total mass of the solution, adding graphene accounting for 11.33% of the total mass of the solution, cooling the water bath kettle to 60 ℃ after uniformly stirring, adding OP-10 accounting for 5.66% of the total mass of the solution, stirring the solution for 2 minutes by using ethylene carbonate accounting for 6.80% of the total mass of the solution, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66% of the total mass of the solution, vigorously stirring the solution, pouring the solution into a mold, putting the mold into a refrigerator, and freezing the solution for 1 minute at-40 ℃ until the mixture is solidified to form an inner electrode layer of foam.
2. Preparation of foam ionic gel layer
According to H2Weighing the PVA and the bacterial cellulose in a ratio of 5:1:0.3, mixing the two, and adding the mixtureAfter a beaker is filled, a magnetic stirrer is placed, then tinfoil is used for covering the mouth of the beaker, the beaker is placed into a magnetic water bath pot, the beaker is heated for 1 to 2 hours at the temperature of 80 to 100 ℃, PVA is completely dissolved, then the water bath pot is cooled to 66 ℃, calcium carbonate accounting for 2.55 percent of the total mass of the solution is added, after uniform stirring, the water bath pot is cooled to 60 ℃, OP-10 accounting for 6.39 percent of the total mass of the solution is added, ethylene carbonate accounting for 7.66 percent of the total mass of the solution is stirred for 2 minutes, then the water bath is cooled to 35 ℃, n-pentane accounting for 6.39 percent of the total mass of the solution is added for intensive stirring, the mixture is poured into a mold, and the mold is placed into a freezer at the temperature of minus 40 ℃ for freezing for 1 minute until the mixture is solidified to be used as a foam electrolyte layer.
3. Manufacture of foamed outer electrode layer
According to H2Weighing PVA and bacterial cellulose in a ratio of 5:1:0.3, mixing the two, adding the mixture into a beaker, adding a magnetic stirrer, covering the mouth of the beaker with tinfoil, putting the beaker into a magnetic water bath kettle, heating the beaker at 80-100 ℃ for 1-2 hours until the PVA is completely dissolved, cooling the water bath kettle to 66 ℃, adding calcium carbonate accounting for 2.27 percent of the total mass of the solution, adding graphene accounting for 11.33 percent of the total mass of the solution, cooling the water bath kettle to 60 ℃ after uniformly stirring, adding OP-10 accounting for 5.66 percent of the total mass of the solution, stirring the vinyl carbonate accounting for 6.80 percent of the total mass of the solution for 2 minutes, cooling the water bath to 35 ℃, adding n-pentane accounting for 5.66 percent of the total mass of the solution, violently stirring, pouring the mixture into a mold to serve as an outer foam electrode layer, freezing the whole at-40 ℃ for 7 hours and 3 hours after melting, and repeating the three cycles to obtain the integrated cable type stretchable touch sensor with the hole shape.
The method for preparing the hollow sensor by using the die comprises the following steps:
placing the prepared foam electrode and electrolyte solution in a beaker, fixing a guide pipe on a mold support 25, fixing an inner cylinder 24 of the mold in an annular groove 26 of a base 21, pouring the foam electrode solution into the middle part, putting the foam electrode solution into a freezer at the temperature of minus 40 ℃ for freezing for 1 minute until the foam electrode solution is solidified to form a foam inner electrode layer, and then connecting a conductive lead at a certain position of the foam inner electrode layer; and then taking down the inner die cylinder 24, fixing the middle die cylinder 23, injecting electrolyte solution inwards, putting the inner die cylinder into a refrigerator at the temperature of minus 40 ℃ for freezing for 1 minute until the electrolyte solution is solidified to be used as a middle foam electrolyte layer, then taking down the middle die cylinder 23, fixing the outer die cylinder 22 into the tank, pouring the foam electrolyte solution into the tank, putting the tank into the refrigerator at the temperature of minus 40 ℃ for freezing for 1 minute until the electrolyte solution is solidified to be used as an outer foam electrode layer, connecting a conductive lead at a certain position of the outer foam electrode layer, then putting the whole body into the refrigerator at the temperature of minus 40 ℃ for freezing for 7 hours, melting for 3 hours, and repeatedly carrying out three cycles to obtain the flexible cable type touch sensor with holes.
The method for preparing the solid sensor by using the die comprises the following steps:
placing the prepared foam electrode and electrolyte solution in a beaker, fixing the inner cylinder 24 of the mould in the annular groove 26 of the base 21, pouring the foam electrode solution into the middle part, putting the foam electrode solution into a freezer at the temperature of minus 40 ℃ for freezing for 1 minute until the foam electrode solution is solidified to form a foam inner electrode layer, and then connecting a conductive lead at a certain position of the foam inner electrode layer; and then taking down the inner die cylinder 24, fixing the middle die cylinder 23, injecting electrolyte solution inwards, putting the inner die cylinder into a refrigerator at the temperature of minus 40 ℃ for freezing for 1 minute until the electrolyte solution is solidified to be used as a middle foam electrolyte layer, then taking down the middle die cylinder 23, fixing the outer die cylinder 22 into the tank, pouring the foam electrolyte solution into the tank, putting the tank into the refrigerator at the temperature of minus 40 ℃ for freezing for 1 minute until the electrolyte solution is solidified to be used as an outer foam electrode layer, connecting a conductive lead at a certain position of the outer foam electrode layer, then putting the whole body into the refrigerator at the temperature of minus 40 ℃ for freezing for 7 hours, melting for 3 hours, and repeatedly carrying out three cycles to obtain the flexible cable type touch sensor with holes.
The sensor prepared in example 1 was connected to an LCR meter and then different pressures were applied to the sensor to obtain a capacitance curve as shown in fig. 6. As can be seen from fig. 6, the capacitance values obtained by the prepared pressure sensor under different pressures can stably and accurately reflect the external pressure. On the basis of the embodiment 1, the embodiment 2 is that the conductive material graphene is changed into graphite; example 3 the ionic carrier calcium carbonate was replaced with 1:1 sodium hydroxide and sodium bicarbonate; example 4 the ester dimethyl carbonate is replaced by ethylene carbonate; example 5 the ratio of the conductive material graphene in the electrode was increased by 4.75%, and the flexible cable type tactile sensor prepared therefrom could achieve a tactile function, but there was a difference in performance. The graphite of example 2 has no hydrophilic group, so that it is difficult to bond with a polymer, thereby reducing tensile properties;
in examples 3 and 4, the performance was not greatly changed from that of example 1; the specific gravity of the conductive material of the embodiment 5 is increased, so that the conductivity of the sensor is increased, and the sensitivity of the sensor is correspondingly improved; in example 6, compared with example 1, the hollow structure is changed into a solid structure, and the corresponding monitoring function can be realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A flexible cable-type tactile sensor characterized by: the battery comprises a foam inner electrode layer, a foam electrolyte layer and a foam outer motor layer which are integrally arranged from inside to outside in a tubular shape, wherein the foam electrolyte layer is prepared by foaming a mixture comprising a solvent, a high polymer material, esters, an ion carrier and bacterial cellulose, the mass ratio of the foam electrolyte layer to the foam electrolyte layer is (25-30): (3-4): (4-6): (1-2): (0.4-0.6), the materials of the foam inner electrode layer and the foam outer electrode layer are the same, the foam electrolyte layer and the foam outer electrode layer are prepared by foaming a mixture comprising a solvent, a high polymer material, esters, a conductive material and bacterial cellulose, and the mass ratio of the foam electrolyte layer to the foam outer electrode layer is (25-30): (3-4): (4-6): (3-4): 0.4-0.6);
the sensor is characterized in that a mixture consisting of a high polymer material, bacterial cellulose, esters and a conductive substance is foamed and frozen to form foamed inner and outer electrode layers, an electrolyte is mixed with the high polymer material and the esters, then the foamed mixture is foamed, a mesh-shaped foamed electrolyte layer is prepared after the foamed mixture is frozen, and then the foamed inner and outer electrode layers and the foamed electrolyte layer are frozen together to be combined into a whole.
2. The flexible cable-type tactile sensor according to claim 1, wherein: the solvent is water or ionic liquid, wherein the ionic liquid is liquid at room temperature or near room temperature and is completely formed by organic cations and inorganic or organic anions, the cations comprise quaternary ammonium salt ions, quaternary phosphonium salt ions, imidazolium salt ions and pyrrole salt ions, and the anions comprise halogen ions, tetrafluoroborate ions and hexafluorophosphate ions.
3. The flexible cable-type tactile sensor according to claim 1, wherein: the high polymer material comprises polyvinyl alcohol, thermoplastic polyurethane elastomer or polystyrene.
4. The flexible cable-type tactile sensor according to claim 1, wherein: the esters comprise one or a mixture of more than two of propylene carbonate, ethylene carbonate, ethyl methyl carbonate, dimethyl carbonate and ethylene carbonate.
5. The flexible cable-type tactile sensor according to claim 1, wherein: the ionic carrier is one or a mixture of more than two of acid, alkali and salt.
6. The flexible cable-type tactile sensor according to claim 1, wherein: the ion carrier is one or a mixture of more than two of sulfuric acid, phosphoric acid, sodium hydroxide, potassium hydroxide, sodium sulfate and sodium bicarbonate.
7. The flexible cable-type tactile sensor according to claim 1, wherein: the conductive material is metal, carbon or conductive polymer.
8. The flexible cable-type tactile sensor according to claim 1, wherein: the conductive material comprises one or a compound of more than two of copper, aluminum, gold, silver, nickel, graphite, acetylene black, carbon nano tubes, graphene, MXene, polypyrrole and polythiophene.
9. A method for manufacturing a flexible cable-type tactile sensor according to any one of claims 1 to 8, wherein: the method comprises the following steps:
(1) preparation of foamed inner electrode layer
Mixing water, bacterial cellulose and a high polymer material, adding an ionophore, heating for 1-2 hours at 80-100 ℃, cooling to 75 ℃ after the high polymer material is completely dissolved, adding an emulsifier and esters, stirring for reaction for 2.5 hours, adding a conductive material, stirring to be in a uniform state, cooling to 35 ℃, adding a foaming agent, quickly stirring uniformly, pouring into a mold, and putting into a refrigerator to freeze until the mixture is solidified to be used as a foam inner electrode layer;
(2) preparation of foamed electrolyte layer
Mixing water, bacterial cellulose and a high polymer material, adding an ionophore, heating for 1-2 hours at 80-100 ℃, cooling to 75 ℃ after the high polymer material is completely dissolved, adding an emulsifier and esters, stirring uniformly, cooling to 35 ℃, adding a foaming agent, rapidly stirring uniformly, pouring into a mold, and putting into a refrigerator to freeze until the foaming agent is solidified to form a foam electrolyte layer;
(3) preparation of foam outer electrode layer
Mixing water, bacterial cellulose and a high polymer material, adding an ionophore into the mixture, heating the mixture for 1 to 2 hours at the temperature of between 80 and 100 ℃, cooling the mixture to 75 ℃ after the high polymer material is completely dissolved, adding an emulsifier and esters into the mixture, stirring the mixture for reaction for 2.5 hours, adding a conductive material into the mixture, stirring the mixture to be in a uniform state, cooling the mixture to 35 ℃, adding a foaming agent into the mixture, quickly and uniformly stirring the mixture, pouring the mixture into a mold to serve as an outer foam electrode layer, integrally putting the outer foam electrode layer into a refrigerator, freezing the mixture for 7 hours, melting the mixture for 3 hours, and repeatedly carrying out three cycles to obtain the porous integrated flexible cable type touch sensor;
(4) wiring of sensor
And the foam inner electrode layer and the foam outer electrode layer are respectively connected with a conductive lead, so that the sensor is electrically connected with the outside.
10. The method for manufacturing a flexible cable-type tactile sensor according to claim 9, wherein: the mould used in the preparation method comprises a base and a plurality of concentric cylindrical moulds detachably fixed on the base, wherein a plurality of annular grooves for fixing the cylindrical moulds are arranged on the mould base.
CN202010310828.2A 2020-04-20 2020-04-20 Flexible cable type touch sensor Active CN111504519B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010310828.2A CN111504519B (en) 2020-04-20 2020-04-20 Flexible cable type touch sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010310828.2A CN111504519B (en) 2020-04-20 2020-04-20 Flexible cable type touch sensor

Publications (2)

Publication Number Publication Date
CN111504519A CN111504519A (en) 2020-08-07
CN111504519B true CN111504519B (en) 2022-03-01

Family

ID=71876209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010310828.2A Active CN111504519B (en) 2020-04-20 2020-04-20 Flexible cable type touch sensor

Country Status (1)

Country Link
CN (1) CN111504519B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113155326A (en) * 2021-03-09 2021-07-23 河北工业大学 Flexible self-supporting fiber woven touch sensor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100595964C (en) * 2001-07-27 2010-03-24 麻省理工学院 Battery structures, self-organizing structures and related methods
CN104992853B (en) * 2015-07-27 2017-06-23 南京林业大学 The method for preparing ultracapacitor flexible membrane electrode
US20190180937A1 (en) * 2016-05-12 2019-06-13 Georgia Tech Research Corporation Polarizable Sol-Gel Materials, Methods of Preparation and Processing for High Energy and Power storage Devices
CN106803462A (en) * 2016-11-30 2017-06-06 同济大学 A kind of flexible extensible ultracapacitor and its preparation based on graphene composite film
CN108871177B (en) * 2017-05-08 2020-04-24 中国科学院苏州纳米技术与纳米仿生研究所 Ion type strain sensor of carbon nano tube array electrode and preparation method and application thereof
CN107389232B (en) * 2017-06-15 2020-11-24 华南理工大学 Bio-based asymmetric flexible force-sensitive sensing material and preparation method thereof
CN107919233B (en) * 2017-10-16 2019-10-29 中国科学院电工研究所 A kind of high voltage flexible solid-state supercapacitor and preparation method thereof
CN108630462B (en) * 2018-05-22 2020-05-22 中南林业科技大学 Nanofiber-based integrated thin film supercapacitor and preparation method thereof
CN109520645A (en) * 2018-11-22 2019-03-26 南方科技大学 A kind of integral type capacitance type sensor and its preparation method and application
CN110993360A (en) * 2019-11-25 2020-04-10 广西大学 Preparation method of integrated electrode composite material and flexible supercapacitor

Also Published As

Publication number Publication date
CN111504519A (en) 2020-08-07

Similar Documents

Publication Publication Date Title
CN111504520B (en) Integrated flexible stretchable touch sensor based on super-capacitor sensing principle
CN111250007B (en) Preparation method of pure metal aerogel and flexible composite material
CN111504519B (en) Flexible cable type touch sensor
CN113512209B (en) Preparation method of high-conductivity and high-sensitivity polyvinyl alcohol-based conductive hydrogel
CN110987246A (en) Flexible sensor and preparation and use methods thereof
CN111378205A (en) Preparation method of PDMS sponge-based strain sensor material
CN115612167B (en) Composite material for PDMS-based flexible pressure sensor
CN105671962A (en) Flexible nanofiber-based electronic skin as well as preparation method
CN110387061A (en) A kind of MXene-PDMS composite foam of hollow structure and its preparation method and application
CN101714467A (en) Electrochemical super capacitor and manufacturing method thereof
CN115014597A (en) Flexible pressure sensor based on porous structure composite material and preparation method thereof
He et al. Flexible energy storage devices to power the future
CN112816111A (en) Flexible touch sensor and manufacturing method thereof
CN109374024A (en) A kind of Piezoresistive electronic skin and preparation method thereof with bowl configurations
CN109810280B (en) Preparation method of microporous composite stress-strain sensing material of nylon elastomer
Wang et al. Stretchable and compressible conductive foam based on Cu nanowire/MWCNT/ethylene-vinyl acetate composites for high-mass-loading supercapacitor electrode
Chen et al. Microstructured flexible pressure sensor based on nanofibrous films for human motions and physiological detection
CN211602241U (en) Sensor element and sensor
Su et al. Biomimetic scale-like polysaccharide-based highly-sensitive piezoresistive sensor with “shell-core” nanostructure
Jia et al. Self-powered flexible battery pressure sensor based on gelatin
Huang et al. Highly Transparent and Flexible Zn-Ti3C2T x MXene Hybrid Capacitors
Zeng et al. Direct Ink Writing 3D Printing for High‐Performance Electrochemical Energy Storage Devices: A Minireview
Yang et al. Ultralight, superelastic pure graphene aerogel for piezoresistive sensing application
CN103759867B (en) Convex type flexible pressure sensitive element and method of production thereof
CN115058049A (en) Variable gradient structure flexible aerogel, preparation method thereof and flexible pressure sensor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant