CN116798699A - Process for manufacturing conductive paste and intermediate skin layer for touch sensor - Google Patents
Process for manufacturing conductive paste and intermediate skin layer for touch sensor Download PDFInfo
- Publication number
- CN116798699A CN116798699A CN202311091269.0A CN202311091269A CN116798699A CN 116798699 A CN116798699 A CN 116798699A CN 202311091269 A CN202311091269 A CN 202311091269A CN 116798699 A CN116798699 A CN 116798699A
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- Prior art keywords
- conductive
- powder
- conductive paste
- mixing
- dispersion liquid
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 7
- 230000008569 process Effects 0.000 title claims description 6
- 239000000843 powder Substances 0.000 claims abstract description 25
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 239000002904 solvent Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010951 brass Substances 0.000 claims abstract description 9
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000003085 diluting agent Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 3
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 claims description 6
- 229940117955 isoamyl acetate Drugs 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 14
- 230000004044 response Effects 0.000 description 11
- 239000000243 solution Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- 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
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
Abstract
The application provides a manufacturing process of conductive paste and an intermediate skin layer for a touch sensor, relates to the technical field of sensors, and solves the technical problem that the manufacturing process of the conductive paste is complex in the prior art. The device comprises the following operation steps: step S1: mixing raw materials, namely uniformly mixing the carbon nano tube, nickel powder, brass powder and silver powder to form conductive powder; step S2: performing dispersion treatment, namely mixing the conductive powder with a pure water solvent in proportion to uniformly disperse the conductive powder in the pure water solvent to form stable conductive dispersion liquid; step S3: filtering to remove impurities, and carrying out paper separation and filtration on the conductive dispersion liquid; step S4: and adjusting the concentration, and then mixing the conductive dispersion liquid and the diluent in proportion to prepare the conductive paste.
Description
Technical Field
The application relates to the technical field of sensors, in particular to a manufacturing process of conductive paste and an intermediate skin layer for a touch sensor.
Background
The electronic skin is one of the forefront directions of intelligent material and sensor research, is also an emerging field of development of contemporary electronic information industry, and has important application value in the fields of artificial intelligence, communication entertainment, medical health and the like; the flexible touch sensor is taken as an important component in electronic skin research, is an important way for a robot to perceive external environment information, is one of necessary media for the robot to realize direct interaction with external environment or targets, and development of electronic skin with a touch perception function has important scientific significance and application value for exploring physical world of future robots.
At present, conductive paste is an important component of the flexible touch sensor, but the manufacturing process of the conductive paste is complex, and the consumed cost is high.
Disclosure of Invention
The application aims to provide a manufacturing process of conductive paste and an intermediate skin layer for a touch sensor, so as to solve the technical problem that the manufacturing process of the conductive paste is complex in the prior art. The preferred technical solutions of the technical solutions provided by the present application can produce a plurality of technical effects described below.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides a manufacturing process of conductive paste, which comprises the following operation steps:
step S1: mixing raw materials, namely uniformly mixing the carbon nano tube, nickel powder, brass powder and silver powder to form conductive powder;
step S2: performing dispersion treatment, namely mixing the conductive powder with a pure water solvent in proportion to uniformly disperse the conductive powder in the pure water solvent to form stable conductive dispersion liquid;
step S3: filtering to remove impurities, and carrying out paper separation and filtration on the conductive dispersion liquid;
step S4: and adjusting the concentration, and then mixing the conductive dispersion liquid and the diluent in proportion to prepare the conductive paste.
Optionally, in step S4, isoamyl acetate and pure water solvent are mixed in proportions to make the diluent.
Optionally, in step S1, all the raw materials are put into a vessel for mixing.
The application provides an intermediate skin layer for a touch sensor, which comprises conductive paste manufactured by using a conductive paste manufacturing process.
The manufacturing process of the conductive paste provided by the application adopts the carbon nano tube, the nickel powder, the brass powder and the silver powder to be uniformly mixed to form the conductive powder, the conductive powder can be uniformly dispersed in the pure water solvent to form the stable conductive dispersion liquid, and then the conductive dispersion liquid is diluted to prepare the conductive paste, so that the process is simple, the operation is convenient, and the technical problem of complex manufacturing process of the conductive paste in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a manufacturing process of a conductive paste according to an embodiment of the present application;
FIG. 2 is a graph showing the comparison of the conductive paste according to the embodiment of the present application with the conductive paste according to the prior art;
FIG. 3 is a test chart of test response speed for an intermediate skin layer of a tactile sensor provided by an embodiment of the present application;
FIG. 4 is a data graph of 1N compression force test response accuracy for an intermediate skin layer of a tactile sensor provided by an embodiment of the application;
FIG. 5 is a data graph of 5N compression force test response accuracy for an intermediate skin layer of a tactile sensor provided by an embodiment of the application;
FIG. 6 is a data graph of 10N compression force test response accuracy for an intermediate skin layer of a tactile sensor provided by an embodiment of the application;
FIG. 7 is a data graph of 50N compression force test response accuracy for an intermediate skin layer of a tactile sensor provided by an embodiment of the application;
fig. 8 is a data graph of 100N compression force test response accuracy for an intermediate skin layer of a tactile sensor provided by an embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, based on the examples herein, which are within the scope of the application as defined by the claims, will be within the scope of the application as defined by the claims.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., refer to an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood as appropriate by those of ordinary skill in the art.
Example 1:
the application provides a manufacturing process of conductive paste, which comprises the following operation steps:
step S1: mixing raw materials, namely uniformly mixing carbon nano tubes, nickel powder, brass powder and silver powder to form conductive powder, namely selecting 70-90 parts of 95% -99% high-purity carbon nano tubes, 5-15 parts of 95% -99% high-purity 2000-mesh nickel powder, 3-8 parts of 95% -99% high-purity 2000-mesh brass powder and 3-8 parts of 95% -99% high-purity 2000-mesh silver powder, so that the dispersion of the raw materials in the prepared conductive paste is uniform;
step S2: dispersing, namely mixing conductive powder and pure water solvent in a ratio of 1:6-1:4 to uniformly disperse the conductive powder in the pure water solvent to form stable conductive dispersion liquid;
step S3: filtering to remove impurities, and separating paper from the conductive dispersion liquid to remove impurities and large particles in the conductive dispersion liquid so as to ensure the purity and uniformity of the conductive dispersion liquid;
step S4: and (3) adjusting the concentration, and uniformly mixing the conductive dispersion liquid and the diluent in a ratio of 1:120-1:80 to prepare the conductive paste. The manufacturing process of the conductive paste provided by the application adopts the carbon nano tube, the nickel powder, the brass powder and the silver powder to be uniformly mixed to form the conductive powder, the conductive powder can be uniformly dispersed in the pure water solvent to form the stable conductive dispersion liquid, and then the conductive dispersion liquid is diluted to prepare the conductive paste with the resistance exceeding 20000 omega.
In an alternative embodiment, in step S4, isoamyl acetate and pure water solvent are mixed in a ratio of 1:120 to 1:80 to prepare a diluent.
As an alternative embodiment, in step S1, all the raw materials are put into a vessel to be mixed, and the carbon nanotubes, the nickel powder, the brass powder and the silver powder may be placed into the vessel to be mixed, and the carbon nanotubes, the nickel powder, the brass powder and the silver powder may be uniformly mixed by stirring in the vessel.
Referring to fig. 2, the conductive paste in the prior art is mostly used in the fields of lead-acid batteries, lithium battery cathodes, carbon-coated aluminum foils, carbon-coated copper foils and the like, and has a small conductive resistance, generally about 10-50 ohms, and even if a thinner is added, the stable resistance value of over 20000 ohms is difficult to reach, and after excessive dilution, the resistance value of the conductive paste is unstable, so that the conductive paste is difficult to be applied to electronic skin application based on the strain resistance principle. As can be seen from fig. 2, the conductive paste of the present application has larger resistance values, wider range, and better stability for testing the resistance values of different dilution concentrations, and is more suitable for application in the conductive paste of the strain resistance sensor.
Example 2:
the application provides an intermediate skin layer for a touch sensor, comprising conductive paste manufactured by a conductive paste manufacturing process. The middle skin layer adopts conductive paste with resistance exceeding 20000Ω, can sensitively detect pressure of 0.1 to hundreds of newtons, and has wide detection range and high sensitivity. The method can simultaneously give consideration to extremely high detection precision and can cover a wide measurement range.
Referring to fig. 3, a test chart of test response speed for an intermediate skin layer of a tactile sensor:
the response speed may reflect the sensitivity of the intermediate skin layer, and is specifically operated as: a flexible high-sensitivity tactile sensor sample with the length of 100mm, the width of 100mm and the thickness of 5mm is connected to an oscilloscope instrument, and the rising Time (Rise Time) is recorded by inputting a 20ms square wave signal: the Time from the start of the input signal change to the output signal reaching its final value is 11.1ms, and the Fall Time (Fall Time) is recorded: the Response Time (Response Time) is calculated from the end of the input signal change to the Time at which the output signal reaches its final value of 10.6 ms: the average of the rise time and fall time, i.e. 10.85ms.
Referring to fig. 4-8, the response accuracy of the test is tested by taking an intermediate skin layer with a length of 100mm, a width of 100mm and a thickness of 5mm as a sample, repeating the test for a plurality of times by pressing forces of 1N, 5N, 10N, 50N and 100N, recording the resistance value of the test, and carrying out the test for a plurality of times, wherein the error range is smaller than 1%.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (4)
1. The manufacturing process of the conductive paste is characterized by comprising the following operation steps:
step S1: mixing raw materials, namely uniformly mixing the carbon nano tube, nickel powder, brass powder and silver powder to form conductive powder;
step S2: performing dispersion treatment, namely mixing the conductive powder with a pure water solvent in proportion to uniformly disperse the conductive powder in the pure water solvent to form stable conductive dispersion liquid;
step S3: filtering to remove impurities, and carrying out paper separation and filtration on the conductive dispersion liquid;
step S4: and adjusting the concentration, and then mixing the conductive dispersion liquid and the diluent in proportion to prepare the conductive paste.
2. The process for producing a conductive paste according to claim 1, wherein in step S4, isoamyl acetate and a pure water solvent are mixed in proportion to prepare the diluent.
3. The process for producing a conductive paste according to claim 1, wherein in step S1, all raw materials are put into a vessel to be mixed.
4. An intermediate skin layer for a tactile sensor comprising a conductive paste produced by the process of any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311091269.0A CN116798699A (en) | 2023-08-29 | 2023-08-29 | Process for manufacturing conductive paste and intermediate skin layer for touch sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311091269.0A CN116798699A (en) | 2023-08-29 | 2023-08-29 | Process for manufacturing conductive paste and intermediate skin layer for touch sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116798699A true CN116798699A (en) | 2023-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311091269.0A Pending CN116798699A (en) | 2023-08-29 | 2023-08-29 | Process for manufacturing conductive paste and intermediate skin layer for touch sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116798699A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258584A (en) * | 2013-01-09 | 2013-08-21 | 深圳市创智材料科技有限公司 | Electric conductive silver paste and manufacturing method thereof |
| CN105869770A (en) * | 2016-03-30 | 2016-08-17 | 成都新柯力化工科技有限公司 | Graphene conductive paste prepared by mechanical stripping and preparation method of graphene conductive paste |
| CN110993144A (en) * | 2019-11-26 | 2020-04-10 | 天津宝兴威科技股份有限公司 | Carbon nanotube electrode slurry for solar cell and preparation method thereof |
-
2023
- 2023-08-29 CN CN202311091269.0A patent/CN116798699A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103258584A (en) * | 2013-01-09 | 2013-08-21 | 深圳市创智材料科技有限公司 | Electric conductive silver paste and manufacturing method thereof |
| CN105869770A (en) * | 2016-03-30 | 2016-08-17 | 成都新柯力化工科技有限公司 | Graphene conductive paste prepared by mechanical stripping and preparation method of graphene conductive paste |
| CN110993144A (en) * | 2019-11-26 | 2020-04-10 | 天津宝兴威科技股份有限公司 | Carbon nanotube electrode slurry for solar cell and preparation method thereof |
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