CN111497220A - Shape memory sensor and method for manufacturing the same - Google Patents
Shape memory sensor and method for manufacturing the same Download PDFInfo
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- CN111497220A CN111497220A CN202010214427.7A CN202010214427A CN111497220A CN 111497220 A CN111497220 A CN 111497220A CN 202010214427 A CN202010214427 A CN 202010214427A CN 111497220 A CN111497220 A CN 111497220A
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- 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
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- 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
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- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
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Abstract
The application belongs to the technical field of sensors, and particularly relates to a shape memory sensor and a manufacturing method thereof, wherein the method comprises the following steps: s1: preparing a liquid shape memory polymer material; s2: adjusting the viscosity of the liquid shape memory polymer material to 3D printing viscosity; s3: constructing a three-dimensional data model of a sensor matrix; s4: according to the three-dimensional data model, a liquid shape memory polymer material is printed in a 3D mode to obtain a primary processing piece; s5: sequentially carrying out heat preservation and cooling on the primary workpiece, and carrying out external field stimulation on the primary workpiece when the primary workpiece is cooled to room temperature so as to carry out shape memory training on the primary workpiece and form a sensor matrix; s6: the surface of the sensor substrate is coated with an electrode material to form the shape memory sensor with reversible deformation performance. When the use condition is recovered, the shape structure can be recovered, and the signal detection stability, repeatability and sensitivity of the shape memory sensor in a complex environment are further ensured.
Description
Technical Field
The application belongs to the technical field of sensors, and particularly relates to a shape memory sensor and a manufacturing method thereof.
Background
In recent years, 3D printing technology has been gradually applied to sensor manufacturing due to its ability to form precise and complex structures in one step. However, some 3D printed polymer materials are prone to irreversible deformation in an environment with abnormal temperature or abnormal ph, which negatively affects signal detection stability, repeatability and sensitivity of a sensor made of the 3D printed polymer material.
Disclosure of Invention
An object of the embodiment of the application is to provide a shape memory sensor, aim at solving the technical problem that 3D among the prior art prints fashioned macromolecular material sensor and takes place irreversible deformation easily and lead to signal detection stability, repeatability and sensitivity to descend.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: a method of manufacturing a shape memory sensor, comprising the steps of:
s1: preparing a liquid shape memory polymer material;
s2: constructing a three-dimensional data model of a sensor matrix;
s3: adjusting the viscosity of the liquid shape memory polymer material to 3D printing viscosity;
s4: 3D printing the liquid shape memory polymer material to obtain a primary processing piece;
s5: sequentially carrying out heat preservation and cooling treatment on the initial processing piece, and carrying out external field stimulation on the initial processing piece to carry out shape memory training on the initial processing piece when the initial processing piece is cooled to room temperature;
s6: and covering an electrode material on the surface of the primary workpiece after the shape memory training is finished so as to form the shape memory sensor.
Optionally, in the step S1, the manufacturing method of the shape memory polymer material includes a chemical crosslinking method, a physical crosslinking method, a copolymerization method or a molecular self-assembly method.
Optionally, in the step S1, the shape memory polymer material includes polynorbornene, styrene/butadiene copolymer, trans-1, 4-polyisoprene, modified polyethylene or ethylene/vinyl acetate copolymer.
Optionally, in the step S3, the 3D printing has a printing nozzle diameter of 0.04mm to 0.3 mm.
Optionally, in the step S3, the scanning printing speed of the 3D printing is 5mm/S to 20 mm/S.
Optionally, in the step S3, the forming temperature of the 3D printing satisfies the following relationship:
10℃—T1≤T≤10℃+T1；
wherein T is the molding temperature, and T1 is the melting point temperature of the polymer material.
Optionally, the step S4 includes the following steps:
s41: adding shape memory alloy powder into the liquid shape memory polymer material to form a mixture;
s42: and 3D printing and forming the mixture to obtain the primary workpiece.
Optionally, in the step S5, a temperature difference value between the holding temperature and the room temperature of the preliminary workpiece satisfies the following relationship;
300℃≤T2≤450℃；
wherein T2 is the temperature difference between the heat preservation temperature of the primary workpiece and the room temperature.
Optionally, in step S5, the external field stimulation includes thermal stimulation, electrical stimulation, magnetic stimulation, optical stimulation, velocity stimulation, or liquid stimulation.
The embodiment of the application has at least the following beneficial effects: according to the manufacturing method of the shape memory sensor, the liquid shape memory polymer material is prepared, the viscosity of the liquid shape memory polymer material is adjusted to be the viscosity required by 3D printing, the data model for 3D printing is built according to the structure of the sensor base body, after the data model is built, the initially machined part can be printed according to the data model, then the initially machined part is subjected to heat preservation and cooling, shape memory training of the initially machined part is achieved under the stimulation effect of an external field, the sensor base body with the shape memory function is further formed, and then the electrode material is covered on the surface of the sensor base body, so that the shape memory sensor is formed. Therefore, the shape memory sensor has reversible deformation performance, and even if the shape memory sensor is deformed, the shape memory sensor can realize shape structure restoration under the use condition (such as temperature condition or pH value condition) restoration, so that the signal detection stability, repeatability and sensitivity of the shape memory sensor in a complex environment are ensured.
Another technical scheme adopted by the embodiment of the application is as follows: a shape memory sensor is manufactured by the manufacturing method of the shape memory sensor.
The shape memory sensor provided by the embodiment of the application is manufactured by adopting the method, so that the reversible deformation performance is realized, when the use condition (such as a temperature condition or a pH value condition) is recovered, the shape structure of the shape memory sensor can also be recovered, and the signal detection stability, the repeatability and the sensitivity of the shape memory sensor in a complex environment are further ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a process flow diagram of a method of fabricating a shape memory sensor according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a detailed step of step S4 in FIG. 1;
fig. 3 is a schematic structural view of a shape memory pressure sensor according to embodiment 2;
fig. 4 is another schematic structural diagram of the shape memory pressure sensor according to embodiment 2.
Wherein, in the figures, the respective reference numerals:
10-shape memory pressure sensor 11-flexible upper polar plate 12-flexible film electrode
13-through hole 14-flexible bottom plate 15-miniature pyramid array.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-4 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
As shown in fig. 1 and 2, an embodiment of the present application provides a method for manufacturing a shape memory sensor, including the following steps:
s1: preparing a liquid shape memory polymer material;
s2: adjusting the viscosity of the liquid shape memory polymer material to 3D printing viscosity; specifically, the viscosity of the polymer material can be adjusted by adding an initiator and a solvent into the shape memory polymer material and uniformly mixing. The initiator may be of a radical type, an anionic type, a cationic type, a complex type, or the like.
S3: constructing a three-dimensional data model of a sensor matrix; the three-dimensional data model may be constructed by three-dimensional modeling software.
S4: according to the three-dimensional data model, a liquid shape memory polymer material is printed in a 3D mode to obtain a primary processing piece;
s5: sequentially carrying out heat preservation and cooling treatment on the initial workpiece, and carrying out external field stimulation on the initial workpiece to carry out shape memory training on the initial workpiece when the initial workpiece is cooled to room temperature so as to form a sensor matrix;
s6: and covering an electrode material on the surface of the sensor substrate to form the shape memory sensor.
The following further describes a method for manufacturing a shape memory sensor provided in an embodiment of the present application: according to the manufacturing method of the shape memory sensor, the liquid shape memory polymer material is prepared, the viscosity of the liquid shape memory polymer material is adjusted to the viscosity required by 3D printing, the data model for 3D printing is built according to the structure of the sensor base body, after the data model is built, the initial workpiece can be printed according to the data model, then the initial workpiece is subjected to heat preservation and cooling, shape memory training of the initial workpiece is achieved under the stimulation effect of an external field, the sensor base body with the shape memory function is further formed, and then the electrode material is covered on the surface of the sensor base body, so that 4D printing manufacturing of the shape memory sensor is achieved. Therefore, the shape memory sensor has reversible deformation performance, and even if the shape memory sensor is deformed, the shape structure of the shape memory sensor can be restored under the use condition (such as temperature condition or pH value condition), so that the signal detection stability, repeatability and sensitivity of the shape memory sensor in a complex environment are ensured.
In other embodiments of the present application, in step S1, the manufacturing method of the shape memory polymer material includes a chemical crosslinking method, a physical crosslinking method, a copolymerization method, or a molecular self-assembly method. In particular, the chemical crosslinking process may be specifically a chain polymerization reaction. The physical crosslinking method may be light reaction, heat reaction, radiation reaction, etc.
In other embodiments of the present application, in step S1, the shape memory polymer material includes polynorbornene, styrene/butadiene copolymer, trans 1, 4-polyisoprene, modified polyethylene, or ethylene/vinyl acetate copolymer. In particular, it may also be a polymer material with biodegradable and biocompatible properties, according to the requirements of the service environment of the shape memory sensor.
In other embodiments of the present application, as shown in fig. 1 and 2, step S4 includes the steps of:
s41: adding shape memory alloy powder into a liquid shape memory polymer material to form a mixture;
s42: the mixture is subjected to 3D printing to obtain a preform.
Specifically, by adding shape memory alloy powder to the shape memory polymer material, the reversible deformation performance of the shape memory sensor is further enhanced. The shape memory alloy can be titanium-nickel base memory alloy, copper base memory alloy, iron base memory alloy or iron-manganese-silicon alloy.
In other embodiments of the present application, the 3D printing has a print nozzle diameter of 0.04mm to 0.3mm in step S42. Specifically, the print nozzle diameter for 3D printing may be 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.20mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, or 0.30 mm. By limiting the diameter of the printing nozzle to be 0.04 mm-0.3 mm, on one hand, the sufficient number of printing layers of the primary workpiece can be ensured, so that the surface texture of the primary workpiece is finer, and the subsequent deburring and polishing treatment is reduced. On the other hand, the printing layer number can be controlled within a reasonable range, so that the processing efficiency is ensured.
In other embodiments of the present application, the scanning printing speed of the 3D printing is 5mm/S to 20mm/S in step S42. Specifically, the scanning print speed may be 5mm/s, 5.5mm/s, 6mm/s, 6.5mm/s, 7mm/s, 7.5mm/s, 8mm/s, 8.5mm/s, 9mm/s, 9.5mm/s, 10mm/s, 10.5mm/s, 11mm/s, 11.5mm/s, 12mm/s, 12.5mm/s, 13mm/s, 13.5mm/s, 14mm/s, 14.5mm/s, 15mm/s, 15.5mm/s, 16mm/s, 16.5mm/s, 17mm/s, 17.5mm/s, 18mm/s, 18.5mm/s, 19mm/s, 19.5mm/s, or 20 mm/s. By controlling the scanning and printing speed to be 5-20 mm/s, the printing precision is ensured, the printing layer is thinner, and the printing precision of the primary workpiece is improved.
In other embodiments of the present application, in step S4, the forming temperature of the 3D printing satisfies the following relationship:
10℃—T1≤T≤10℃+T1；
wherein T is the molding temperature, and T1 is the melting point temperature of the shape memory polymer material.
Specifically, through with printing temperature control at the positive and negative 10 ℃ within range of the melting point temperature of polymer shape memory macromolecular material, just so when guaranteeing that shape memory macromolecular material has certain mobility, also make shape memory macromolecular material can solidify at the in-process that the successive layer printed fast, and then promote printing efficiency.
In other embodiments of the present application, in step S5, the temperature difference value between the soak temperature and the room temperature of the green workpiece satisfies the following relationship;
300℃≤T2≤450℃；
wherein, T2 is the temperature difference between the heat preservation temperature of the primary workpiece and the room temperature.
Specifically, the temperature difference value is controlled to be 300-450 ℃, so that the reasonable temperature gradient of the initial workpiece can be ensured in the process of cooling to room temperature, and the cooling efficiency of the initial workpiece is improved.
In other embodiments of the present application, in step S5, the external field stimulation includes thermal stimulation, electrical stimulation, magnetic stimulation, optical stimulation, velocity stimulation, or fluid stimulation. Specifically, the external field stimulation can be repeatedly performed to realize repeated shape memory training of the preliminary processed piece, and finally the sensor substrate with the reversible deformation function is formed.
The following further describes a specific application of the method for manufacturing a shape memory sensor provided in the application examples in conjunction with some specific examples:
example 1: shape memory strain sensor fabrication
The specific preparation method of the shape memory polymer material comprises the following steps: polycaprolactone was first placed in a round bottom flask and dried under vacuum at 120 ℃ for 2 hours. Next, methyl acrylate and dioxane dried with molecular sieve were reacted at 85 ℃ under nitrogen for 2 hours. The macromer was precipitated with cold petroleum ether. The macromonomers are aired overnight in a fume hood, and finally the substances are uniformly mixed to form a high molecular mixture.
The above mixture was 3D printed in a 3D printer according to the parameters mentioned above. And performing shape memory training under external stimulation. The carbon conductive grease was homogenized in an ARE-310 planetary mixer at 2000 rpm for 2 minutes to make a conductive ink. The conductive ink was defoamed in the blender at 2200 rpm for an additional 2 minutes. The conductive ink prepared finally was filled in a 3cc syringe.
The method comprises the steps of firstly curing a liquid polymer mixture by using a D L P type 3D printer to form a flexible polar plate with a preset size, then extruding a preset pattern onto the flexible polar plate through a nozzle with the inner diameter of 0.4mm under proper pressure to finally form a strain sensor with the area of 4mm wide and 20mm long, wherein the whole conductive ink of the strain sensor is in a U-shaped circuit, two ends of the U-shaped circuit are respectively provided with a contact with the length of 5mm, and the contact is conveniently connected with an external circuit, the impedance of the U-shaped circuit is related to the strain borne by the flexible polar plate, and after the strain sensor is repeatedly used, the temperature is heated to a certain temperature (for example, 90 ℃) and then is cooled to the room temperature, so that the shape of the strain sensor can be recovered, and the high repeatability and the stability of signals are ensured.
As shown in fig. 3 and 4, example 2: shape memory pressure sensor 10 fabrication
The circuit comprises: an ink jet printed conductive silver electrode;
substrate: polycaprolactone
The printing mode is the same as that of the first embodiment.
Printing a flexible upper polar plate 11 and a flexible lower polar plate 14 by using 3D printing, wherein the flexible upper polar plate 11 is contacted with the flexible lower polar plate 14 uniformly distributed with the miniature pyramid array 15, a flexible thin film electrode 12 is manufactured on the contact surface of the flexible upper polar plate 11 and the flexible lower polar plate 14, and a conductive silver electrode is printed on the flexible thin film electrode by ink jet. The flexible film electrode 12 on the flexible upper polar plate 11 and the flexible film electrode 12 on the flexible lower polar plate 14 are connected with an external circuit through wires, and the wires are positioned in through holes 13 arranged on the corresponding corners of the flexible upper polar plate 11 and the flexible lower polar plate 14.
Wherein the flexible film electrode 12 is made of a flexible conductive polymer PEDOT PSS (poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid).
The pressure sensor is specifically manufactured by curing polycaprolactone in a liquid state by using a D L P type 3D printer to form a flexible upper polar plate 11 with a preset size and a flexible lower polar plate 14 with a uniformly distributed miniature pyramid array 15, wherein through holes 13 are reserved on corresponding corners of the flexible upper polar plate 11 and the flexible lower polar plate 14.
The processed flexible upper polar plate 11 and the flexible lower polar plate 14 are sequentially placed in cleaning solution and alcohol for ultrasonic cleaning treatment to remove surface impurities and pollutants. The flexible upper plate 11 and the flexible lower plate 14 are then taken out and placed in a fume hood to be completely cured.
Two leads respectively pass through the through holes 13 reserved on the flexible upper polar plate 11 and the flexible lower polar plate 14, the leads are tightly attached to the flexible upper polar plate 11 and the flexible lower polar plate 14 by conductive adhesive, the flexible upper polar plate and the flexible lower polar plate are placed in a forced convection oven, the conductive adhesive is completely cured after being baked for minutes at 100 ℃, and the flexible upper polar plate and the flexible lower polar plate are naturally cooled to room temperature after being taken out.
And placing the flexible upper electrode plate 11 and the flexible lower electrode plate 14 connected with the leads in a plasma processor for oxygen plasma treatment for 90s to increase the hydrophilicity of the flexible upper electrode plate 11 and the flexible lower electrode plate 14 and enable the flexible upper electrode plate and the flexible lower electrode plate 14 to be more easily soaked in liquid.
And placing the flexible upper polar plate 11 and the flexible lower polar plate 14 which are subjected to the oxygen plasma treatment in the liquid conductive polymer solution for 30s, so that the surfaces of the flexible upper polar plate 11 and the flexible lower polar plate 14 are completely soaked with a layer of solution, and the soaking uniformity and consistency are ensured as much as possible.
And taking out the flexible upper electrode plate 11 and the flexible lower electrode plate 14 of which the surfaces are soaked with the liquid conductive polymer solution, putting the flexible upper electrode plate and the flexible lower electrode plate into a forced convection oven, baking the flexible upper electrode plate and the flexible lower electrode plate for 15min at the temperature of 100 ℃, taking out the flexible upper electrode plate and the flexible lower electrode plate, and naturally cooling the flexible upper electrode plate and the flexible lower electrode plate to.
The flexible upper polar plate 11 and the flexible lower polar plate 14 are adhered together by using a polyimide insulating tape, and meanwhile, the side gap between the flexible upper polar plate 11 and the flexible lower polar plate 14 is sealed, so that the flexible thin film electrode 12 is prevented from being influenced by air humidity and the stability of the piezoresistive property of the flexible thin film electrode is avoided.
The embodiment of the application also provides a shape memory sensor, which is manufactured by the manufacturing method of the shape memory sensor.
The shape memory sensor provided by the embodiment of the application is manufactured by adopting the method, so that the reversible deformation performance is realized, when the use condition (such as a temperature condition or a pH value condition) is recovered, the shape structure of the shape memory sensor can also be recovered, and the signal detection stability, the repeatability and the sensitivity of the shape memory sensor in a complex environment are further ensured.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. A method of manufacturing a shape memory sensor, comprising: the method comprises the following steps:
s1: preparing a liquid shape memory polymer material;
s2: adjusting the viscosity of the liquid shape memory polymer material to 3D printing viscosity;
s3: constructing a three-dimensional data model of a sensor matrix;
s4: according to the three-dimensional data model, 3D printing is carried out on the liquid shape memory polymer material to obtain a primary processing piece;
s5: sequentially carrying out heat preservation and cooling treatment on the initial workpiece, and carrying out external field stimulation on the initial workpiece to carry out shape memory training on the initial workpiece when the initial workpiece is cooled to room temperature so as to form the sensor matrix;
s6: and covering an electrode material on the surface of the sensor substrate to form the shape memory sensor.
2. The method of manufacturing a shape memory sensor according to claim 1, wherein: in step S1, the shape memory polymer material is prepared by a chemical crosslinking method, a physical crosslinking method, a copolymerization method or a molecular self-assembly method.
3. The method of manufacturing a shape memory sensor according to claim 1, wherein: in the step S1, the shape memory polymer material includes polynorbornene, styrene/butadiene copolymer, trans-1, 4-polyisoprene, modified polyethylene or ethylene/vinyl acetate copolymer.
4. The method of manufacturing a shape memory sensor according to claim 1, wherein: the step S4 includes the steps of:
s41: adding shape memory alloy powder into the liquid shape memory polymer material to form a mixture;
s42: and 3D printing the mixture to obtain the primary workpiece.
5. The method of manufacturing a shape memory sensor according to claim 4, wherein: in the step S42, the 3D printing has a print nozzle diameter of 0.04mm to 0.3 mm.
6. The method of manufacturing a shape memory sensor according to claim 4, wherein: in the step S42, the scanning print speed of the 3D printing is 5mm/S to 20 mm/S.
7. The method of manufacturing a shape memory sensor according to claim 4, wherein: in the step S4, the molding temperature of the 3D printing satisfies the following relationship:
10℃—T1≤T≤10℃+T1；
wherein T is the molding temperature, and T1 is the melting point temperature of the shape memory polymer material.
8. The method for manufacturing a shape memory sensor according to any one of claims 1 to 6, wherein: in the step S5, a temperature difference value between the holding temperature and the room temperature of the preliminary work piece satisfies the following relationship;
300℃≤T2≤450℃；
wherein T2 is the temperature difference between the heat preservation temperature of the primary workpiece and the room temperature.
9. The method for manufacturing a shape memory sensor according to any one of claims 1 to 6, wherein: in step S5, the external field stimulation includes thermal stimulation, electrical stimulation, magnetic stimulation, optical stimulation, velocity stimulation, or liquid stimulation.
10. A shape memory sensor, characterized by: the shape memory sensor according to any one of claims 1 to 9, which is produced by the method for producing a shape memory sensor.
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Cited By (5)
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| CN112183519A (en) * | 2020-09-25 | 2021-01-05 | 华中科技大学 | 4D printing-based neuro-vision-imitated sensor |
| CN112477112A (en) * | 2020-11-26 | 2021-03-12 | 华中科技大学 | Simulated nerve touch sensor based on 4D printing forming |
| CN112857557A (en) * | 2021-01-14 | 2021-05-28 | 中国地质大学（武汉） | Auditory sensor based on 4D printing technology shaping |
| CN113257984A (en) * | 2021-04-15 | 2021-08-13 | 深圳大学 | Temperature-adjustable flexible thermoelectric device and preparation method and application thereof |
| CN113338793A (en) * | 2021-05-24 | 2021-09-03 | 中国地质大学（武汉） | Drilling splitter based on 4D printing technology and manufacturing method thereof |
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| CN112183519A (en) * | 2020-09-25 | 2021-01-05 | 华中科技大学 | 4D printing-based neuro-vision-imitated sensor |
| CN112477112A (en) * | 2020-11-26 | 2021-03-12 | 华中科技大学 | Simulated nerve touch sensor based on 4D printing forming |
| CN112857557A (en) * | 2021-01-14 | 2021-05-28 | 中国地质大学（武汉） | Auditory sensor based on 4D printing technology shaping |
| CN113257984A (en) * | 2021-04-15 | 2021-08-13 | 深圳大学 | Temperature-adjustable flexible thermoelectric device and preparation method and application thereof |
| CN113257984B (en) * | 2021-04-15 | 2022-11-11 | 深圳大学 | Temperature-adjustable flexible thermoelectric device and preparation method and application thereof |
| CN113338793A (en) * | 2021-05-24 | 2021-09-03 | 中国地质大学（武汉） | Drilling splitter based on 4D printing technology and manufacturing method thereof |
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