CN112461882A - Method for testing shape memory performance of surface microstructure - Google Patents
Method for testing shape memory performance of surface microstructure Download PDFInfo
- Publication number
- CN112461882A CN112461882A CN202011239784.5A CN202011239784A CN112461882A CN 112461882 A CN112461882 A CN 112461882A CN 202011239784 A CN202011239784 A CN 202011239784A CN 112461882 A CN112461882 A CN 112461882A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- surface microstructure
- magnetic polymer
- testing
- polymer material
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 230000007334 memory performance Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 229920000642 polymer Polymers 0.000 claims abstract description 50
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000002114 nanocomposite Substances 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 37
- 239000002861 polymer material Substances 0.000 claims description 25
- 239000000112 cooling gas Substances 0.000 claims description 23
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 16
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 239000001569 carbon dioxide Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 7
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Natural products CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920006226 ethylene-acrylic acid Polymers 0.000 claims description 2
- 230000005674 electromagnetic induction Effects 0.000 abstract description 10
- 238000011084 recovery Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 238000009530 blood pressure measurement Methods 0.000 abstract description 3
- 238000009736 wetting Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000012781 shape memory material Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
- G01N2013/0208—Investigating surface tension of liquids by measuring contact angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Sampling And Sample Adjustment (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The method for testing the shape memory performance of the surface microstructure provided by the invention organically fuses the objective table, the upper flat rod, the guide rail and the electromagnetic heating assembly, heats the surface of the magnetic polymer by an alternating magnetic field generated by the electromagnetic heating assembly, generates a constant magnetic field by direct current, enables the surface microstructure of the magnetic polymer to deform under the action of magnetic induction lines, and can complete the test of the wetting performance of the surface microstructure of the magnetic polymer by comparing data before and after the test by video optical contact angle measuring equipment. The method for testing the shape memory performance of the surface microstructure can test the wettability of the magnetic hopeless surface microstructure, can study the relation between the magnetic field intensity and the wettability of the microstructure, study the relation between the electromagnetic induction heating time and the shape recovery rate of the microstructure, and carry out integrated study on the processes of electromagnetic induction heating, pressure application, pressure measurement, shape recovery and the like of the surface microstructure.
Description
The application is a divisional application with the application number of 201711246321.X, the application date of 2017, 12 and 01 months, and the name of the invention is 'a method for testing the shape memory performance of a surface microstructure'.
Technical Field
The invention relates to the technical field of testing the wettability of a surface microstructure of a magnetic polymer, in particular to a method for testing the shape memory performance of the surface microstructure.
Background
The magnetic polymer is a magnetic body prepared by mixing, bonding, filling and compounding, surface compounding, laminating and compounding and the like of a high molecular material and various inorganic magnetic substances, has a good practical application value at present, and has a wide prospect. The shape memory property refers to the phenomenon that after a solid material with a certain shape is subjected to certain plastic deformation under certain conditions and is heated to a certain temperature, the material is completely restored to the shape before deformation. The micro-structure formed on the surface of the shape memory material can deform in an external proper temperature environment and fix the shape at low temperature, and the wettability, the optical property and the like of the surface of the material are changed along with the deformation.
However, the existing testing device for the memory performance of the magnetic polymer material can only test the macroscopic shape memory performance of the material, but cannot test the shape memory performance and the wetting performance of the microstructure.
Therefore, the problem to be solved by those skilled in the art is how to provide a testing apparatus capable of testing the shape memory property and the wettability of the surface microstructure of the polymer magnetic nanocomposite.
Disclosure of Invention
The invention provides a method for testing the shape memory performance of a surface microstructure, which can test the shape memory performance and the wettability of the surface microstructure of a magnetic polymer.
In order to solve the above technical problems, the present invention provides a method for testing shape memory performance of a surface microstructure, which applies a device for testing shape memory performance of a surface microstructure, wherein the device for testing shape memory performance of a surface microstructure comprises: an outer casing for providing an internal test space; the object stage is arranged in the outer box body and used for placing a magnetic polymer material; the device comprises a guide rail arranged above an object stage, an upper flat rod connected with the guide rail and used for applying pressure to the magnetic polymer material, and a pressure sensor arranged on the upper flat rod; the electromagnetic heating assembly is arranged on the lower surface of the object stage and used for electromagnetically heating the magnetic polymer material; the temperature sensor is arranged on the electromagnetic heating assembly; the cooling gas nozzle is used for spraying cooling gas to the magnetic polymer material, and the gas cylinder is communicated with the cooling gas nozzle; the rotary table is arranged below the objective table and used for driving the objective table to rotate; and a servo motor for driving the rotary table to rotate;
the test method comprises the following steps:
step 1) measuring a contact angle theta 1 of the surface microstructure of the magnetic polymer material by a video optical contact angle measuring instrument,
placing the magnetic polymer material on the stage;
step 2) electrifying the electromagnetic heating assembly, and powering off the electromagnetic heating assembly when the temperature of the magnetic polymer material reaches a preset temperature value; the electromagnetic heating assembly is electrified with direct current to generate a constant magnetic field, so that the surface microstructure of the magnetic polymer is deformed;
step 3) the upper flat rod descends to be in contact with the magnetic polymer material, and when the pressure in the testing device reaches a preset pressure value, the upper flat rod stops descending;
step 4) driving the rotary table to rotate for a preset number of turns by the servo motor, opening the gas cylinder, spraying cooling gas by the cooling gas nozzle, and cooling and shaping the magnetic polymer material; the upper flat rod rises, and the magnetic polymer material is taken out;
step 5) measuring a contact angle theta 2 of the surface microstructure of the magnetic polymer material by using a video optical contact angle measuring instrument;
and 6) researching the relation between the number of revolutions and the durability of the surface microstructure of the magnetic polymer by comparing the contact angle theta 1, the contact angle theta 2, the number of revolutions and data of a preset pressure value.
Optionally, the stage includes a sample fixing position for placing the polymer magnetic nanocomposite, and a latch disposed at an edge of the sample fixing position and used for clamping the magnetic polymer material.
Optionally, the electromagnetic heating assembly includes an electromagnetic coil, an insulating layer sleeved outside the electromagnetic coil, and a shielding layer sleeved outside the insulating layer.
Optionally, the box body further comprises an exhaust fan arranged in the outer box body.
Optionally, the gas in the gas cylinder is supercritical carbon dioxide or compressed air.
Optionally, the polymer magnetic nano composite material is a thermoplastic polyurethane/ferroferric oxide composite material or an ethylene-acrylic acid ethyl acetate copolymer/ferroferric oxide composite material.
The device for testing the shape memory performance of the surface microstructure organically fuses the objective table, the upper flat rod, the guide rail and the electromagnetic heating assembly, the electromagnetic heating assembly generates an alternating magnetic field to heat a high-molecular magnetic nano composite material, the electromagnetic heating assembly generates a constant magnetic field under direct current to deform the surface microstructure of the magnetic polymer, the upper flat rod applies pressure to the magnetic polymer, and data before and after testing are compared through measuring equipment, so that the wetting performance test of the surface microstructure of the magnetic polymer can be completed.
The method for testing the shape memory performance and the wettability of the surface microstructure provided by the invention can be used for testing the shape memory performance and the wettability of the surface microstructure of a magnetic polymer, researching the relation between the size and the direction of the magnetic field intensity and the wettability of the microstructure, researching the relation between the electromagnetic induction heating time and the shape recovery rate of the microstructure, and researching the integration of the processes of electromagnetic induction heating, pressure application, pressure measurement, abrasion, shape recovery and the like of the surface microstructure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for testing shape memory performance of a surface microstructure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electromagnetic induction heating assembly according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an object stage according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a turntable provided in an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a method for testing shape memory performance of a surface microstructure according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating another method for testing shape memory of a surface microstructure according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a method for testing shape memory performance of a surface microstructure according to another embodiment of the present invention.
In the figure: 1. the automatic detection device comprises an outer box body, a rotary table, a notch 21, an electromagnetic heating assembly 3, a shielding layer 31, an insulating layer 32, an electromagnetic coil 33, a wiring hole 4, a wiring hole insulating layer 5, an objective table 6, a lock catch 61, a sample fixing position 62, a guide rail 7, a pressure sensor 8, an exhaust fan 9, an upper flat rod 10, a cooling air nozzle 12, an air guide pipe 13 and an air bottle 14.
Detailed Description
The invention provides a method for testing the shape memory performance of a surface microstructure, which can test the shape memory performance of the surface microstructure of a high-molecular magnetic nano composite material.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, the present disclosure provides an apparatus for testing shape memory performance of a surface microstructure, which includes an outer case 1, a stage 6, an upper flat bar 10, a guide rail 7, an electromagnetic heating assembly 3, a cooling air nozzle 12, an air bottle 14, a pressure sensor, and a temperature sensor.
The outer casing 1 is used to provide an internal testing space, and divides the environment into the outside and the inside of the device. The object stage 6 is arranged in the outer box body 1 and used for placing the polymer magnetic nano composite material. The guide rail 7 is provided above the stage 6. The upper flat bar 10 is connected to the guide rail 7 and is used for pressing the polymer magnetic nanocomposite. The pressure sensor is arranged on the upper flat bar 10. The electromagnetic heating component 3 is arranged on the lower surface of the objective table 6 and used for electromagnetically heating the polymer magnetic nano composite material. The temperature sensor is arranged on the electromagnetic heating component 3. The gas cylinder 14 is used for storing cooling gas with a certain pressure, and is communicated with the cooling gas nozzle 12, and the cooling gas nozzle 12 sprays the cooling gas in the gas cylinder 14 to the polymer magnetic nanocomposite material for cooling the polymer magnetic nanocomposite material.
According to the device for testing the shape memory performance of the surface microstructure, provided by the invention, the objective table, the upper flat rod, the guide rail and the electromagnetic heating assembly are organically fused, an alternating magnetic field generated by the electromagnetic heating assembly is used for heating the high-molecular magnetic nanocomposite, the upper flat rod is used for applying pressure to the high-molecular magnetic nanocomposite, and data before and after testing are compared through the measuring equipment, so that the shape memory performance test of the surface microstructure of the high-molecular magnetic nanocomposite can be completed.
The stage 6 includes a sample fixing position 62 for placing the polymer magnetic nanocomposite material, and a latch 61 disposed at an edge of the sample fixing position 62 and used for clamping the polymer magnetic nanocomposite material. The lock 61 is used for locking the sample and preventing the sample from being displaced in the friction process and the pressurization process.
The electromagnetic heating component 3 is adopted to heat the polymer magnetic nano composite material, the processing process is stable and reliable, the operation is convenient, the electric heating energy conversion efficiency is high, the heating speed is high, and the heat distribution is uniform. Specifically, the electromagnetic heating element 3 includes an electromagnetic coil 33, an insulating layer 32 covering the electromagnetic coil 33, and a shielding layer 31 covering the insulating layer 32. The shielding layer 31 is intended to prevent the magnetic flux leakage phenomenon, thereby avoiding heating of the non-heating component and achieving the full utilization of electromagnetism. The purpose of the insulating layer 32 is to prevent electrical leakage from injuring a person. The electromagnetic heating component is pollution-free, environment-friendly, high in heating speed and good in heating effect.
Electromagnetic heating subassembly 3 is still including the wiring hole 4 of connecting solenoid 33, and wiring hole skin parcel has wiring hole insulating layer, prevents that the electric leakage from hindering the people.
Preferably, the scheme further comprises an exhaust fan 9 arranged in the outer box body 1, and the exhaust fan exhausts the ejected cooling gas out of the outer box body to the external environment.
The gas in the cylinder 14 is supercritical carbon dioxide or compressed air.
The polymer magnetic nano composite material is a thermoplastic polyurethane/ferroferric oxide composite material or an ethylene-ethyl acrylate copolymer/ferroferric oxide composite material.
This scheme still includes revolving stage 2 and servo motor, and revolving stage 2 sets up in objective table 6 below for it is rotatory to drive objective table 6. The servo motor drives the turntable 2 to rotate.
In one embodiment, as shown in fig. 3 and 4, the turntable 2 is provided with a groove which can prevent the object stage 6, and the groove is provided with a wiring hole 4 through which the power line is connected to an external ac power supply. The edge of objective table 6 is provided with rings, conveniently takes. Correspondingly, a notch 21 is arranged at the position corresponding to the position of the hanging ring of the object stage 6 on the turntable 2, and the notch 21 is used for being clamped into the hanging ring to play a role in positioning the object stage 6.
Referring to fig. 5, the present disclosure further provides a method for testing shape memory performance of a surface microstructure, in which the testing apparatus is applied, and the method includes:
s101, measuring the height h1 of the surface microstructure of the polymer magnetic nano composite material through a super-field-depth microscope, and placing the polymer magnetic nano composite material on an objective table 6;
step S102, the electromagnetic heating component 3 is powered on, and when the temperature of the polymer magnetic nano composite material reaches a preset temperature value, the electromagnetic heating component 3 is powered off;
step S103, the upper flat rod 10 descends to be in contact with the polymer magnetic nanocomposite, and when the pressure in the testing device reaches a preset pressure value, the upper flat rod 10 stops descending;
step S104, opening the gas cylinder 14, spraying cooling gas through the cooling gas nozzle 12, and cooling and shaping the polymer magnetic nano composite material; lifting the upper flat bar 10, and taking out the macromolecular magnetic nano composite material;
s105, measuring the height h2 of the surface microstructure of the macromolecular magnetic nano composite material through a super-depth-of-field microscope;
and S106, researching the relation between the pressure and the deformation quantity of the surface microstructure of the polymer magnetic nano composite material through comparing the data of the height h1, the height h2 and a preset pressure value.
Referring to fig. 6, the present disclosure further provides a method for testing shape memory performance of a surface microstructure, in which the testing apparatus is applied, and the method includes:
step S201, measuring the height h3 of the surface microstructure of the polymer magnetic nano composite material through a super field depth microscope, and placing the polymer magnetic nano composite material on an objective table 6;
step S202, the electromagnetic heating component 3 is powered on, when the polymer magnetic nano composite material is heated to the preset heating time length according to the preset step temperature, the electromagnetic heating component 3 is powered off, the gas cylinder 14 is simultaneously opened, the cooling gas nozzle 12 sprays cooling gas, and the polymer magnetic nano composite material is cooled and shaped;
step S203, measuring the height h4 of the surface microstructure of the polymer magnetic nano composite material through a super-depth-of-field microscope;
and S204, researching the relation between the heating time and the shape recovery rate of the surface microstructure of the polymer magnetic nano composite material through comparison of the height h3, the height h4 and data of preset heating time.
Referring to fig. 7, the present disclosure further provides a method for testing shape memory performance of a surface microstructure, in which the testing apparatus is applied, and the method includes:
s301, measuring a contact angle theta 1 of the surface microstructure of the polymer magnetic nanocomposite through a contact angle measuring instrument, and placing the polymer magnetic nanocomposite on an objective table 6;
step S302, the electromagnetic heating component 3 is powered on, and when the temperature of the polymer magnetic nano composite material reaches a preset temperature value, the electromagnetic heating component 3 is powered off; optionally, the electromagnetic heating assembly is electrified with direct current or alternating current to generate a constant magnetic field, so that the surface microstructure of the magnetic polymer is deformed.
Step S303, the upper flat rod 10 descends to be in contact with the polymer magnetic nanocomposite, and when the pressure in the testing device reaches a preset pressure value, the upper flat rod 10 stops descending;
step S304, after the turntable 2 is driven by the servo motor to rotate for a preset number of turns, the gas cylinder 14 is opened, the cooling gas nozzle 12 sprays cooling gas, and after the polymer magnetic nano composite material is cooled and shaped; lifting the upper flat bar 10, and taking out the macromolecular magnetic nano composite material;
s305, measuring a contact angle theta 2 of the surface microstructure of the macromolecular magnetic nano composite material by using a contact angle measuring instrument;
step S306, researching the relation between the number of turns of rotation and the durability of the surface microstructure of the polymer magnetic nano composite material through data comparison of the contact angle theta 1, the contact angle theta 2, the number of turns and a preset pressure value.
Specifically, the invention provides the following technical scheme:
the first embodiment is as follows:
the polymer magnetic nano composite material adopts thermoplastic polyurethane/ferroferric oxide composite material as a test sample. Before testing, the height h1 of the microstructure of the sample surface was observed by an ultradepth-of-field microscope. An electromagnetic induction coil 33 in the box body generates a magnetic field after being introduced with 100MHz alternating current, magnetic ferroferric oxide nano particles in a sample cut magnetic lines to generate heat, when the preset temperature value of the sample is increased to 150 ℃, the heating is stopped, the upper flat rod 10 starts to slowly descend along the guide rails 7 at two sides under the control of signals until the upper flat rod is contacted with the sample, and the upper flat rod 10 stops descending when the pressure reaches the preset pressure value by observing the data fed back by the pressure sensor 8; and opening a valve of the supercritical carbon dioxide gas cylinder 14, and rapidly cooling and shaping the test sample by supercritical carbon dioxide which is sprayed out from the cooling gas nozzle 12 and has the temperature of 4 ℃ and the pressure of 3.87 MPa. At the same time, the exhaust fan 9 is turned on to exhaust the gas. After the sample is fully cooled and shaped, the upper flat rod 10 begins to rise, the sample is taken out, the height h2 of the microstructure on the surface of the test sample is observed by the test sample with the fixed shape under a super-depth-of-field microscope, and the relation between the pressure and the deformation amount of the microstructure is researched through data processing before and after the test sample is taken. And then the sample is put back to the testing device for electromagnetic induction heating, at the moment, the heating is stopped when the set heating time is reached by setting the step temperature with the preset heating time duration of 1-2 minutes, and simultaneously, the valve of the cooling device is opened, and the testing sample is rapidly cooled and shaped by supercritical carbon dioxide which is sprayed out from the cooling air nozzle 12 and has the temperature of 4 ℃ and the pressure of 3.87 MPa. And taking out the shaped test sample, observing the height of the microstructure on the surface of the test sample under a super-depth-of-field microscope, and researching the relationship between the heating time and the shape recovery rate of the microstructure through data processing before and after.
Example two:
in the embodiment, the polymer magnetic nanocomposite material adopts an ethylene-ethyl acrylate copolymer/ferroferric oxide sample as a test sample. Before the test, the contact angle of the sample surface was measured at room temperature using a contact angle measuring instrument. An electromagnetic induction coil 33 in the box body generates a magnetic field after 100MHz alternating current is introduced, magnetic ferroferric oxide nano particles in a sample cut magnetic lines of force to generate heat, when the temperature of the sample rises to 68 ℃, heating is stopped, through signal control, an upper flat rod 10 starts to slowly descend along a guide rail 7 until the sample is contacted with a thermoplastic polyurethane sample, through observing data fed back by a pressure sensor 8, when the pressure reaches a preset pressure value, the upper flat rod 10 stops descending, at the moment, a rotary table 2 is driven to rotate by a servo motor, an objective table 7 starts to rotate under the drive of the rotary table 2 and the upper flat rod 10 is fixed, after the objective table 7 rotates for a set number of turns, a valve of a supercritical carbon dioxide gas cylinder 14 is opened, and the test sample is rapidly cooled and shaped through supercritical carbon dioxide which is sprayed by a cooling gas nozzle 12 and has the temperature of 4 ℃ and the pressure of. And (3) testing the worn contact angle by using a contact angle measuring instrument at room temperature, and researching the durability of the ethylene-ethyl acrylate copolymer/ferroferric oxide sample by processing the data before and after the wear.
The scheme has the advantages that:
(1) the testing device and the testing method provided by the scheme can be used for testing the shape memory performance of the surface microstructure of the polymer magnetic nano composite material.
(2) The testing device and the testing method provided by the scheme can be used for researching the relation between the pressure and the deformation quantity of the microstructure.
(3) The testing device and the testing method provided by the scheme can be used for researching the relation between the electromagnetic induction heating time and the shape recovery rate of the microstructure.
(4) The testing device and the testing method provided by the scheme can be used for researching integration of processes of electromagnetic induction heating, pressure application, pressure measurement, abrasion, shape recovery and the like of the surface microstructure.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A method for testing the shape memory performance of a surface microstructure is characterized in that a testing device for the shape memory performance of the surface microstructure is applied, and the testing device for the shape memory performance of the surface microstructure comprises the following steps: for providing an outer housing (1) with an internal test space; the object stage (6) is arranged in the outer box body (1) and used for placing a magnetic polymer material; a guide rail (7) arranged above the objective table (6), an upper flat bar (10) connected with the guide rail (7) and used for pressing the magnetic polymer material, and a pressure sensor (8) arranged on the upper flat bar (10); the electromagnetic heating component (3) is arranged on the lower surface of the object stage (6) and is used for electromagnetically heating the magnetic polymer material; a temperature sensor arranged on the electromagnetic heating component (3); a cooling gas nozzle (12) for spraying cooling gas to the magnetic polymer material, a gas cylinder (14) communicating with the cooling gas nozzle (12); the rotary table (2) is arranged below the objective table (6) and used for driving the objective table (6) to rotate; and a servo motor for driving the rotary table (2) to rotate; the test method comprises the following steps:
step 1) measuring a contact angle theta 1 of a surface microstructure of the magnetic polymer material by a video optical contact angle measuring instrument, and placing the magnetic polymer material on the objective table (6);
step 2), the electromagnetic heating assembly (3) is powered on, and when the temperature of the magnetic polymer material reaches a preset temperature value, the electromagnetic heating assembly (3) is powered off; the electromagnetic heating assembly is electrified with direct current to generate a constant magnetic field, so that the surface microstructure of the magnetic polymer is deformed;
step 3), the upper flat rod (10) descends to be in contact with the magnetic polymer material, and when the pressure in the testing device reaches a preset pressure value, the upper flat rod (10) stops descending;
step 4) driving the rotary table (2) to rotate for a preset number of turns by the servo motor, then opening the gas cylinder (14), spraying cooling gas by the cooling gas nozzle (12), and cooling and shaping the magnetic polymer material; the upper flat bar (10) is lifted, and the magnetic polymer material is taken out;
step 5) measuring a contact angle theta 2 of the surface microstructure of the magnetic polymer material by using a video optical contact angle measuring instrument;
and 6) researching the relation between the number of revolutions and the durability of the surface microstructure of the magnetic polymer by comparing the contact angle theta 1, the contact angle theta 2, the number of revolutions and data of a preset pressure value.
2. The testing method according to claim 1, wherein the stage (6) comprises a sample holding position (62) for placing the polymer magnetic nanocomposite material, and a latch (61) disposed at an edge of the sample holding position (62) for holding the magnetic polymer material.
3. The testing method according to claim 1, wherein the electromagnetic heating element (3) comprises an electromagnetic coil (33), an insulating layer (32) sleeved outside the electromagnetic coil (33), and a shielding layer (31) sleeved outside the insulating layer (32).
4. The test method according to claim 1, further comprising a suction fan (9) disposed within the outer housing (1).
5. Testing method according to claim 1, characterized in that the gas inside the cylinder (14) is supercritical carbon dioxide or compressed air.
6. The testing method according to claim 1, wherein the polymer magnetic nanocomposite is a thermoplastic polyurethane/ferroferric oxide composite or an ethylene-acrylic acid ethyl acetate copolymer/ferroferric oxide composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011239784.5A CN112461882B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011239784.5A CN112461882B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
| CN201711246321.XA CN108088867B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711246321.XA Division CN108088867B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112461882A true CN112461882A (en) | 2021-03-09 |
| CN112461882B CN112461882B (en) | 2023-12-29 |
Family
ID=62173582
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011239784.5A Active CN112461882B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
| CN201711246321.XA Active CN108088867B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711246321.XA Active CN108088867B (en) | 2017-12-01 | 2017-12-01 | Method for testing shape memory performance of surface microstructure |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN112461882B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740210A (en) * | 2021-09-16 | 2021-12-03 | 哈尔滨工业大学（威海） | Device and method for measuring wetting behavior of plastic on metal surface under different heat sources |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2040793C1 (en) * | 1992-10-13 | 1995-07-25 | Ивановская государственная текстильная академия | Process of determination of wettability of textile materials with polymer adhesive and device for its realization |
| CN203760399U (en) * | 2012-07-05 | 2014-08-06 | Abb股份公司 | Thermal machine converter-equipped installation switch device |
| CN203849088U (en) * | 2014-05-15 | 2014-09-24 | 深圳大学 | Shape memory performance tester |
| CN105223225A (en) * | 2015-10-08 | 2016-01-06 | 同济大学 | A kind of test macromolecular material shape-memory properties device, method of testing and application thereof |
Family Cites Families (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103806U (en) * | 1990-12-29 | 1992-05-06 | 上海钢铁研究所 | Measurer for marmem properties |
| DE19817399C2 (en) * | 1997-04-21 | 2000-08-10 | Georg Kraft | Swivel drive for operating doors and windows |
| EP1337287A2 (en) * | 2000-10-25 | 2003-08-27 | SDGI Holdings, Inc. | Self-forming orthopedic implants |
| US20070061006A1 (en) * | 2005-09-14 | 2007-03-15 | Nathan Desatnik | Methods of making shape memory films by chemical vapor deposition and shape memory devices made thereby |
| US7951319B2 (en) * | 2006-07-28 | 2011-05-31 | 3M Innovative Properties Company | Methods for changing the shape of a surface of a shape memory polymer article |
| KR100834554B1 (en) * | 2006-10-12 | 2008-06-02 | 연세대학교 산학협력단 | Two-way shape memory material, method of manufacturing same, and heat insulating product employing same |
| CN102116722B (en) * | 2009-12-31 | 2013-04-03 | 中国科学院金属研究所 | High-speed high-temperature multifunctional friction and abrasion tester |
| JP2011227220A (en) * | 2010-04-19 | 2011-11-10 | Konica Minolta Business Technologies Inc | Printed matter and image forming method |
| US20120174572A1 (en) * | 2011-01-10 | 2012-07-12 | Donato Clausi | Method for mechanical and electrical integration of sma wires to microsystems |
| CN202110106U (en) * | 2011-05-14 | 2012-01-11 | 长沙亚星数控技术有限公司 | Electric servo rock triaxial test system |
| CN103718337B (en) * | 2011-06-17 | 2017-09-26 | 赛昂能源有限公司 | Electroplating technology for electrode |
| US8921435B2 (en) * | 2012-05-14 | 2014-12-30 | Technion Research & Development Foundation Limited | Shape-memory structures |
| CN202710448U (en) * | 2012-06-04 | 2013-01-30 | 浙江汇锦梯尔镀层科技有限公司 | Pin-on-disk wear tester for measuring friction and wear data under high-temperature environment |
| US9638452B2 (en) * | 2012-09-12 | 2017-05-02 | Celltronix | Method and scalable devices for hyper-fast cooling and warming |
| CN103352194B (en) * | 2013-07-19 | 2015-06-03 | 清华大学深圳研究生院 | Method and equipment for improving shape memory alloy superelasticity |
| WO2015120325A1 (en) * | 2014-02-06 | 2015-08-13 | Acublate, Inc. | Apparatus and method for self-guided ablation |
| CN103990798B (en) * | 2014-05-06 | 2015-10-21 | 华中科技大学 | A kind of high-temperature powder bed system manufactured for laser gain material |
| CN203838087U (en) * | 2014-05-29 | 2014-09-17 | 李水清 | Performance testing device for shape memory alloys |
| JP6123753B2 (en) * | 2014-08-12 | 2017-05-10 | 株式会社阪上製作所 | Electromagnetic induction heating mold equipment for molding and vulcanization of rubber packing |
| CN104297089A (en) * | 2014-10-15 | 2015-01-21 | 中国矿业大学 | Microcosmic frictional wear performance testing device |
| CN105813250A (en) * | 2014-12-31 | 2016-07-27 | 阳光森林（天津）生物科技有限公司 | Novel heating device |
| CN204377174U (en) * | 2014-12-31 | 2015-06-03 | 阳光森林（天津）生物科技有限公司 | A kind of Multifunctional heater |
| CN204594819U (en) * | 2015-03-13 | 2015-08-26 | 南京林业大学 | A kind of multifunction friction wear testing machine |
| CN204613133U (en) * | 2015-04-22 | 2015-09-02 | 哈尔滨理工大学 | A kind of plastic yield iron-base marmem pick-up unit |
| CN204892292U (en) * | 2015-07-09 | 2015-12-23 | 金陵科技学院 | Full -automatic multi -functional ultra -violet curing ware |
| CN205067226U (en) * | 2015-09-08 | 2016-03-02 | 李聪 | Wire and cable tester |
| CN105259064B (en) * | 2015-10-13 | 2017-12-01 | 辽宁工业大学 | A kind of specimen surface crystal grain has the sliding wear testing device and computational methods of preferred orientation |
| CN205080009U (en) * | 2015-10-14 | 2016-03-09 | 哈尔滨工程大学 | 3 fatigue bending machine |
| CN205175840U (en) * | 2015-11-06 | 2016-04-20 | 浙江华电器材检测研究所 | Multiplexer utensil bending test machine |
| CN105547858A (en) * | 2016-01-07 | 2016-05-04 | 江苏科技大学 | Measuring device and testing method for glass micro channel bending mechanical property |
| CN106082111B (en) * | 2016-06-16 | 2017-05-31 | 哈尔滨工业大学 | A kind of preparation method of isotropism and the changeable super hydrophobic surface of anisotropic |
| CN205861473U (en) * | 2016-10-24 | 2017-01-04 | 南京航空航天大学金城学院 | A kind of multifunction friction wear testing machine |
| CN206430989U (en) * | 2016-12-28 | 2017-08-22 | 大理州祥云大宇包装有限公司 | A kind of quality of corrugated experimental rig |
| CN206563723U (en) * | 2017-02-08 | 2017-10-17 | 华南理工大学 | A kind of shape memory alloy heat cyclical stability and function fatigue property test system |
| CN106970206B (en) * | 2017-05-04 | 2020-01-31 | 中国计量大学 | Method for testing wrinkle resistance of shape memory textile |
-
2017
- 2017-12-01 CN CN202011239784.5A patent/CN112461882B/en active Active
- 2017-12-01 CN CN201711246321.XA patent/CN108088867B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2040793C1 (en) * | 1992-10-13 | 1995-07-25 | Ивановская государственная текстильная академия | Process of determination of wettability of textile materials with polymer adhesive and device for its realization |
| CN203760399U (en) * | 2012-07-05 | 2014-08-06 | Abb股份公司 | Thermal machine converter-equipped installation switch device |
| CN203849088U (en) * | 2014-05-15 | 2014-09-24 | 深圳大学 | Shape memory performance tester |
| WO2015172541A1 (en) * | 2014-05-15 | 2015-11-19 | 深圳大学 | Shape memory performance tester |
| CN105223225A (en) * | 2015-10-08 | 2016-01-06 | 同济大学 | A kind of test macromolecular material shape-memory properties device, method of testing and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740210A (en) * | 2021-09-16 | 2021-12-03 | 哈尔滨工业大学（威海） | Device and method for measuring wetting behavior of plastic on metal surface under different heat sources |
| CN113740210B (en) * | 2021-09-16 | 2024-04-09 | 哈尔滨工业大学（威海） | Device and method for measuring wetting behavior of plastic on metal surface under different heat sources |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108088867A (en) | 2018-05-29 |
| CN108088867B (en) | 2021-01-26 |
| CN112461882B (en) | 2023-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106469964B (en) | Permanent magnet motor magnetic pole protects coating moulding process and process equipment | |
| CN107583696B (en) | A kind of particle capture and release device based on bulk acoustic wave excitation and moving bubble | |
| CN108088867B (en) | Method for testing shape memory performance of surface microstructure | |
| EP2280046A1 (en) | Metal-resin composite and method | |
| US20130095232A1 (en) | Method of applying varnish to a stator | |
| CN102308667A (en) | Be used to produce the fexible film of the part that composite material processes | |
| TW201036795A (en) | Energy saving control device and machine or injection molding machine carring with the energy saving control device | |
| CN102114698A (en) | Injection molding mould, preheating device, and method for preheating by using injection molding mould | |
| EP2256232A2 (en) | Metal-resin composite and method | |
| CN108615596A (en) | A kind of abnormity permanent magnet and preparation method thereof, the equipment for preparing special-shaped permanent magnet | |
| US8568200B2 (en) | Ultra-low temperature magnetic polishing machine | |
| CN105866161A (en) | Plastic rack heat resistance observation device | |
| CN115900986A (en) | Cylindrical surface precursor ceramic film temperature sensor and preparation device and preparation method thereof | |
| CN103149505A (en) | Polyimide film surface charging method | |
| CN208292656U (en) | Magnetic control dielectric barrier discharge anode linkage system | |
| CN206843573U (en) | Nitride laser equipment | |
| CN106571220A (en) | Coating equipment for NdFeB magnet crystal boundary diffusion processing | |
| CN202572796U (en) | Sucking and placing device applied to injection molding machine | |
| CN204249273U (en) | Electromagnetic induction heating type low-pressure glue-injection equipment | |
| CN204621083U (en) | A kind of vacuum dehydrogenizing and sintering integrated apparatus | |
| CN109956321A (en) | Small objects grabbing device and its preparation and grasping means based on magnetic drive | |
| CN107617537A (en) | A kind of resin impregnates solidification equipment | |
| CN203552944U (en) | Novel thin-film capacitor | |
| CN108172336A (en) | The manufacturing method thereof of transparent conductive film and its application | |
| CN107321560A (en) | A kind of automatic over-wrapping machine for component |
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 |