Test device

Abstract

The application discloses a testing device, and belongs to the technical field of memory materials. The testing device comprises a working chamber, a stretching device, a heating device, a magnetic field generating device and an illumination device. The stretching device is arranged in the working chamber. The stretching device comprises a first base plate, a fixing member and a stretching member. One end of the first base plate is connected to the fixing member, and the other end is connected to the stretching member. The fixing member is provided with a clamping portion for clamping a sample. The stretching member can be connected to the sample and moves along the length direction of the first base plate. The heating device can heat the working chamber to heat the sample. The magnetic field generating device can generate an alternating magnetic field to cause the sample to have a magnetic heat effect. The illumination device can emit light of different wavelengths towards the sample to cause the sample to have a photo-thermal effect. The application can accurately test the deformation of a sample material under different stimulations of heat, an alternating magnetic field and laser radiation, and realizes the testing of the shape memory effect of the sample material under different stimulations.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of memory material, in particular to a testing device. BACKGROUND

[0002] As a new type of intelligent material, shape memory polymer material has the advantages of light weight and high recovery rate. According to the response of the material under different conditions of stimulation, it can be divided into thermal type, light type, magnetic type and electric type shape memory polymer material.

[0003] At present, the testing device of shape memory polymer material mainly focuses on the measurement of thermal shape memory effect. This kind of device can only measure the fixation rate and recovery rate of polymer shape memory material under thermal effect, but cannot be used to measure the shape memory effect of the material under the stimulation of light, magnetism and other different stimulations. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a testing device capable of testing the shape memory effect of the material under different stimulations.

[0005] According to the first aspect of the present application, a testing device is provided, comprising a working chamber, a stretching device, a heating device, a magnetic field generating device and a light device, the stretching device is arranged in the working chamber, the stretching device comprises a first base plate, a fixing part and a stretching part, one end of the first base plate is connected to the fixing part, the other end is connected to the stretching part, the fixing part is provided with a clamping part for clamping the sample, the stretching part can be connected with the sample and moves along the length direction of the first base plate; the heating device can heat the working chamber to heat the sample; the magnetic field generating device can generate alternating magnetic field to make the sample produce magnetic heat effect; the light device can emit light of different wavelengths to the sample to make the sample produce photo-thermal effect.

[0006] According to the testing device of the present application, at least the following beneficial effects are achieved:

[0007] The working chamber can be heated by the heating device to heat the sample, and the product can also be subjected to magnetic heat effect by the magnetic field generating device, or the sample can be subjected to photo-thermal effect by the light device. Then, the sample is stretched by the stretching device to produce deformation. The deformation of the sample material under the stimulation of heat, alternating magnetic field and laser radiation can be accurately tested. The shape memory effect of the sample material under different stimulations is tested. The accuracy and convenience of the shape memory effect test of the sample material are greatly improved. The test steps are reduced, and the test efficiency is improved.

[0008] According to some embodiments of the present application, the magnetic field generating device is arranged on one side of the first substrate along a first direction and connected to an inner wall of the working chamber, and the stretching device further comprises a first driving assembly connected to the first substrate, the first driving assembly being configured to drive the stretching device to move towards or away from the magnetic field generating device along the first direction.

[0009] According to some embodiments of the present application, the light generating device is arranged on one side of the first substrate along a second direction, the second direction being perpendicular to the first direction, and the stretching device further comprises a second substrate and a second driving assembly, one end of the second substrate being connected to the stretching device and the other end being connected to the second driving assembly, the second driving assembly being configured to drive the second substrate to move along the second direction so as to drive the stretching device to move towards or away from the light generating device along the second direction.

[0010] According to some embodiments of the present application, the first substrate is provided with a first end plate at an end away from the fixing member, a second end plate is arranged between the fixing member and the first end plate, the first end plate and the second end plate are arranged in a spaced manner along the first direction, the stretching member is arranged through the first end plate and the second end plate, the first driving assembly comprises a first driver, a first sliding plate and a first guide rail, two ends of the first guide rail are connected to the first end plate and the second end plate respectively, one end of the first sliding plate is connected to the second substrate, and the other end is provided with a first sliding block in sliding connection with the first guide rail, and the first driver is configured to drive the first sliding block to slide along the first guide rail.

[0011] According to some embodiments of the present application, the second substrate is provided with a third end plate and a fourth end plate arranged in a spaced manner along the second direction at an end away from the first sliding block, the second driving assembly comprises a second driver, a second sliding plate and a second guide rail, two ends of the second guide rail are connected to the third end plate and the fourth end plate respectively, the second sliding plate is provided with a second sliding block in sliding connection with the second guide rail, and the second driver is configured to drive the second sliding block to slide along the second guide rail.

[0012] According to some embodiments of the present application, the clamping part comprises two clamping members arranged in a spaced manner along the width direction of the first substrate, and the two clamping members are both connected to the fixing member so as to form a working position for placing a sample.

[0013] According to some embodiments of the present application, the testing device further comprises a thermal imaging device configured to monitor the temperature distribution of the sample, the thermal imaging device being connected to an inner wall of the working chamber.

[0014] According to some embodiments of the present application, the testing device further comprises a box, the working chamber is arranged in the box, and the front end side wall of the working chamber is a transparent piece.

[0015] According to some embodiments of the present application, the testing device further comprises a camera device, the camera device is arranged at the front side of the transparent piece, and the outer peripheral wall of the box is provided with a support connected with the camera device.

[0016] According to some embodiments of the present application, the box is provided with a control panel and a display panel, the control panel is electrically connected with the heating device, the magnetic field generating device and the illumination device respectively, the control panel is used for controlling the heating device, the magnetic field generating device and the illumination device respectively, and the display panel is used for displaying the temperature of the sample.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0019] Figure 1 It is a schematic view of an embodiment of the testing device of the present application;

[0020] Figure 2 It is a front view of an embodiment of the testing device of the present application;

[0021] Figure 3 It is a schematic view of the stretching device in an embodiment of the testing device of the present application;

[0022] Figure 4 It is a bottom view of the first driving assembly in an embodiment of the testing device of the present application;

[0023] Figure 5 It is a schematic view of the material in a stretched state in an embodiment of the testing device of the present application;

[0024] Figure 6 It is a top view of the first driving assembly in an embodiment of the testing device of the present application.

[0025] Reference signs:

[0026] Testing device 1000; sample 2000;

[0027] Box 100; working chamber 110; support 120;

[0028] Stretching device 200;First base plate 210;Fixing piece 220;Clamping piece 221;Workstation 222;Stretching piece 230;Second base plate 240;First end plate 250;Aperture 251;Second end plate 260;First driver 261;First sliding plate 262;Screw hole 2621;Mounting seat 2622;First guide rail 263;First sliding block 264;Groove 2641;Connecting plate 2642;Third end plate 270;Fourth end plate 280;Second driver 281;Second sliding plate 282;Second guide rail 283;Second sliding block 284;

[0029] Heating device 300;

[0030] Magnetic field generating device 400;

[0031] Illumination device 500;

[0032] Thermal imaging device 600;

[0033] Camera device 700;

[0034] Control panel 800;Display panel 810. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0036] In the description of the present application, it is understood that the orientation description, such as up, down, inside, outside, etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the present application.

[0037] In the description of the present application, if there is a description of first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0038] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. Should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0039] As a new type of intelligent material, shape memory polymer material has great potential and advantages in the fields of aerospace and medical devices, etc. due to its light weight and high recovery rate. According to the response of the material under different conditions, it can be divided into thermal, light, magnetic and electric shape memory polymer materials.

[0040] At present, the test device of shape memory polymer material mainly focuses on the measurement of thermal shape memory effect. The device can only measure the fixing rate and recovery rate of polymer shape memory material under thermal effect. The existing test device can only be applied to single thermal shape memory material and cannot be applied to measure the shape memory effect of the material under different stimuli such as light and magnetism.

[0041] Therefore, some embodiments of the present application provide a test device 1000, as shown in the accompanying drawings. Figures 1-6

[0042] As shown in the accompanying drawings, Figure 1 In the embodiments of the present application, the test device 1000 comprises a working chamber 110, a stretching device 200, a heating device 300, a magnetic field generating device 400 and a light device 500. The stretching device 200 is arranged in the working chamber 110. As shown in the accompanying drawings, Figure 3 The stretching device 200 comprises a first base plate 210, a fixing part 220 and a stretching part 230. One end of the first base plate 210 is connected to the fixing part 220, and the other end is connected to the stretching part 230. The fixing part 220 is provided with a clamping part for clamping the sample 2000. The stretching part 230 can be connected with the sample 2000 and moves along the length direction of the first base plate 210. The heating device 300 can heat the working chamber 110 to heat the sample 2000. The magnetic field generating device 400 can generate an alternating magnetic field to cause the sample 2000 to have a magnetic heating effect. The light device 500 can emit light of different wavelengths towards the sample 2000 to cause the sample 2000 to have a photo-thermal effect.

[0043] As shown in the accompanying drawings, Figure 1 In the embodiments of the present application, the working chamber 110 is a hollow structure. The stretching device 200, the heating device 300, the magnetic field generating device 400 and the light device 500 can be arranged in the working chamber 110. The working chamber 110 can provide an independent environment isolated from the outside world for the test, reducing the possibility of interference by external factors during the test. At the same time, it also ensures that when the heating device 300 directly heats the working chamber 110, the heat can be evenly distributed in the working chamber 110, so that the sample 2000 material can be fully heated.

[0044] ​In the embodiment of the present application, the heating device 300 can include a heating tube and a thermocouple, both of which can be arranged in the working chamber 110 and connected to the bottom of the working chamber 110, wherein the heating tube is used as a heat source for heating the working chamber 110, and the thermocouple can be a temperature measuring element, so that the actual temperature in the working chamber 110 can be detected in real time, and then fed back to the heating tube, thereby greatly improving the accuracy of temperature control of the heating device 300.

[0045] Referring to Figure 2 In the embodiment of the present application, the magnetic field generating device 400 can be fixed to the left inner wall of the working chamber 110, and the stretching device 200 can enter the alternating magnetic field generated by the magnetic field generating device 400. The illumination device 500 can be arranged at the rear end of the top wall of the working chamber 110, which can avoid the magnetic field generating device 400 from blocking the light emitted thereby, so that the light cannot completely irradiate on the sample 2000. The illumination device 500 can be composed of laser elements that can emit different wavelengths, and the light switch and irradiation intensity can be controlled by a computer controller. In the embodiment, the substrate can be light-transmitting, and the light emitted by the illumination device 500 arranged on the top wall of the working chamber 110 can transmit through the substrate and irradiate on the sample 2000 material in the working position 222.

[0046] It can be understood that in the embodiment of the present application, the shape memory effect test of the sample 2000 material under the three stimulations of heating, alternating magnetic field and laser irradiation can be carried out respectively and independently. In the embodiment, the type of stimulation can be selected according to the characteristics of the sample 2000 material, thereby greatly improving the universality of the test device 1000. It should be noted that the shape memory effect of the sample 2000 material can be embodied in the parameters such as the fixing rate, the recovery rate and the response speed of the shape memory material.

[0047] In the shape memory effect test embodiment under heating stimulation, the shape memory effect of polylactic acid sheet material can be tested. Specifically, the size of the sheet material can be 100mmx10mmx5mm, or other sizes, which are not limited in the embodiment.

[0048] In the embodiment, the pure polylactic acid sheet material can be first clamped by the clamping part, the stretching part 230 arranged on one side of the fixing part 220 is connected with the pure polylactic acid sheet material, and the initial length L1 of the material is recorded; the heating device 300 is controlled to heat the temperature in the working chamber 110 to 70℃, and the working chamber 110 is kept at a constant temperature for 5 minutes to ensure that the sample 2000 is heated uniformly; referring to Figure 5As shown, the stretching member 230 is driven to move along the first direction away from the fixing member 220 at 70°C, so as to apply a pulling force parallel to the first direction to the sample 2000, and the sample 2000 is stretched to the length L2; the temperature in the working chamber 110 is reduced to 25°C, the stretching member 230 is disconnected from the sample 2000, and the length L3 of the material is recorded again; after one hour, the temperature in the working chamber 110 is heated to 70°C by the heating device 300 again, and the length L4 of the sample 2000 is recorded. After the lengths L1, L2, L3 and L4 are obtained, the parameters such as the fixing rate, the recovery rate and the response speed of the polylactic acid sheet in the shape memory process can be calculated.

[0049] In the shape memory effect test under alternating magnetic field stimulation, the polylactic acid / ferroferric oxide composite sheet can be subjected to the shape memory effect test. Specifically, the size of the sheet can be 100mmx10mmx5mm, or other sizes, which are not limited in the embodiment. It should be noted that the ferroferric oxide has good magnetocaloric effect, and therefore the sheet has the shape memory performance under alternating magnetic field stimulation.

[0050] In the embodiment, the polylactic acid / ferroferric oxide composite sheet can be clamped by the clamping portion, and the stretching member 230 arranged on one side of the fixing member 220 is connected with the polylactic acid / ferroferric oxide composite sheet; the stretching device 200 is completely arranged in the alternating magnetic field generated by the magnetic field generating device 400, and the initial length L1 of the sample 2000 is recorded; the sample 2000 is heated by the magnetocaloric effect of the magnetic field generating device 400, and specifically, the magnetic field strength can be adjusted to heat the sample 2000 to 70°C, and the sample 2000 is kept at 70°C for 5 minutes to ensure that the sample 2000 is uniformly heated; the length L2 of the sample 2000 is recorded by referring to the length L1. Figure 5 As shown, the stretching member 230 is driven to move along the first direction away from the fixing member 220 at 70°C, so as to apply a pulling force parallel to the first direction to the sample 2000, and the sample 2000 is stretched to the length L2; the temperature in the working chamber 110 is reduced to 25°C, the stretching member 230 is disconnected from the sample 2000, and the length L3 of the material is recorded again; after one hour, the temperature in the working chamber 110 is heated to 70°C by the heating device 300 again, and the length L4 of the sample 2000 is recorded. After the lengths L1, L2, L3 and L4 are obtained, the parameters such as the fixing rate, the recovery rate and the response speed of the polylactic acid sheet in the shape memory process can be calculated.

[0051] In the laser radiation stimulated shape memory effect test embodiment, the polylactic acid / carbon nanotube composite material sheet can be subjected to shape memory effect test. Specifically, the sheet size can be 100mmx10mmx5mm, or other sizes, which are not limited in the embodiment. It should be noted that the polylactic acid / carbon nanotube composite material sheet has shape memory performance under near-infrared light.

[0052] In the embodiment, the polylactic acid / carbon nanotube composite material sheet can be clamped by the clamping part, and the stretching part 230 on one side of the fixing part 220 is connected with the polylactic acid / carbon nanotube composite material sheet. The stretching device 200 is located in the irradiation range of the light device 500, and the initial length L1 of the sample 2000 is recorded. The light device 500 emits near-infrared light, and the sample 2000 generates photothermal effect. Specifically, the near-infrared light intensity can be adjusted to heat the sheet to 70℃, and the temperature is kept constant for 5min to ensure uniform heating of the sample 2000. Referring to Figure 5 As shown in the figure, the stretching part 230 is driven to move away from the fixing part 220 along the first direction, so as to apply a pulling force parallel to the first direction to the sample 2000, and the sample 2000 is stretched to the length L2. The light device 500 is turned off and the temperature of the sample 2000 is reduced to 25℃, the stretching part 230 is not connected with the sample 2000, and the length L3 of the sample 2000 is recorded. After one hour, the sample 2000 is heated to 70℃ by the light device 500 again, and the length L4 of the sample 2000 at this time is recorded. After obtaining L1, L2, L3 and L4, the fixing rate, recovery rate and response speed of the polylactic acid sheet in the shape memory process can be calculated.

[0053] In the embodiment, the stretching part 230 can be directly pulled by hand, or can be connected with a pneumatic cylinder, or can be connected with a tensile machine, or other driving modes. Those skilled in the art can select and set according to the actual situation, which is not limited in the embodiment. In addition, the end of the stretching part 230 can be provided with a clamp connected with the sample 2000, or can be connected by bonding or other connection modes. Those skilled in the art can select and set according to the actual situation, which is not limited in the embodiment.

[0054] In this embodiment of the invention, the sample 2000 can be heated by heating the working chamber 110 using the heating device 300, or by inducing a magnetocaloric effect using the magnetic field generating device 400, or by inducing a photothermal effect using the light irradiation device 500. The sample 2000 can then be stretched using the stretching device 200 to induce deformation. This allows for accurate testing of the deformation of the sample 2000 material under different stimuli such as heat, alternating magnetic fields, and laser radiation. This enables the testing of the shape memory effect of the sample 2000 material under different stimuli, greatly improving the accuracy and convenience of the shape memory effect testing, reducing testing steps, and thus increasing testing efficiency.

[0055] Reference Figure 2 As shown, in this embodiment of the invention, the magnetic field generating device 400 is disposed on one side of the first substrate 210 along the first direction and connected to the inner wall of the working chamber 110. The stretching device 200 also includes a first driving component, which is connected to the first substrate 210. The first driving component is used to drive the stretching device 200 to move toward or away from the magnetic field generating device 400 along the first direction.

[0056] Reference Figure 3 As shown, in this embodiment of the invention, the fixing member 220 is disposed at one end of the first substrate 210, and the first driving component is disposed at the other end of the first substrate 210 and connected to the lower end surface of the first substrate 210. The first driving component can drive the first substrate 210 to move along a first direction, wherein the length direction of the first substrate 210 can be parallel to the first direction. The first driving component drives the first substrate 210 to move, thereby driving the fixing member 220, the stretching member 230 and the sample 2000 material mounted on the station 222 connected to the first substrate 210 to move along the first direction, so that the stretching device 200 can move toward or away from the magnetic field generating device 400, that is, the distance between the sample 2000 and the alternating magnetic field generated by the magnetic field generating device 400 can be adjusted.

[0057] Reference Figure 2 As shown, in this embodiment of the invention, the light-generating device is disposed on one side of the first substrate 210 along the second direction and connected to the inner wall of the working chamber 110. The second direction is perpendicular to the first direction. The stretching device 200 also includes a second substrate 240 and a second driving component. One end of the second substrate 240 is connected to the stretching device 200 and the other end is connected to the second driving component. The second driving component is used to drive the second substrate 240 to move along the second direction, so as to drive the stretching device 200 to move towards or away from the light-generating device 500 along the second direction.

[0058] Reference Figure 3As shown in the embodiment of the present application, the first driving assembly can be fixed on the upper end surface of the second substrate 240, and the second driving assembly can be arranged on the lower end surface of the second substrate 240, wherein the length direction of the second substrate 240 is perpendicular to the width direction of the first substrate 210, and the length direction of the second substrate 240 is parallel to the second direction. The second driving assembly drives the second substrate 240 to move, thereby driving the first driving assembly connected to the second substrate 240, and the fixing member 220, the stretching member 230 and the sample 2000 material mounted on the work station 222 to move along the second direction, so that the stretching device 200 can move towards or away from the illumination device 500, that is, the distance between the sample 2000 and the illumination device 500 and the heating device can be adjusted.

[0059] Referring to Figure 3 As shown in the embodiment of the present application, the first substrate 210 is provided with a first end plate 250 at one end away from the fixing member 220, and a second end plate 260 is arranged between the fixing member 220 and the first end plate 250. The first end plate 250 and the second end plate 260 are arranged in a spaced manner along the first direction, and the stretching member 230 passes through the first end plate 250 and the second end plate 260. The first driving assembly comprises a first driver 261, a first sliding plate 262 and a first guide rail 263. The two ends of the first guide rail 263 are connected to the first end plate 250 and the second end plate 260 respectively. One end of the first sliding plate 262 is connected to the second substrate 240, and the other end is provided with a first sliding block 264 which is in sliding connection with the first guide rail 263. The first driver 261 is used to drive the first sliding block 264 to slide along the first guide rail 263.

[0060] Referring to Figure 4 As shown in the embodiment of the present application, the two ends of the first substrate 210 are connected to the fixing member 220 and the first end plate 250 respectively, and the second end plate 260 is arranged between the two. The interval distance between the second end plate 260 and the first end plate 250 determines the length of the first guide rail 263, that is, the moving range of the stretching device 200 along the first direction. Figure 3 As shown in the embodiment of the present application, the first end plate 250 and the second end plate 260 can be provided with an opening 251 matched with the stretching member 230. The opening 251 can guide the movement of the stretching member 230 along the first direction, thereby greatly improving the direction accuracy of the movement of the stretching member 230. Figure 6 As shown in the embodiment of the present application, the first sliding plate 262 can be provided with a mounting seat 2622 which is sleeved on the stretching member 230. This not only further improves the direction accuracy of the movement of the stretching member 230, but also improves the stability of the movement of the stretching member 230.

[0061] Referring to Figure 6As shown, in the embodiment of the present application, two first guide rails 263 can be arranged, and the two guide rails can be arranged on both sides of the stretching member 230 and symmetric about the stretching member 230. Correspondingly, the first sliding plate 262 can also be provided with first sliding blocks 264 arranged on both sides of the stretching member 230 along the width direction of the first base plate 210, and the first sliding blocks 264 can also be arranged more than two along the length direction of the first base plate 210, thereby improving the direction accuracy and stability of the first driving assembly when driving the stretching device 200 to move. In the embodiment, the first driver 261 can drive the first sliding blocks 264 to slide along the first guide rails 263, thereby driving the stretching device 200 to move along the first direction, and further changing the distance between the sample 2000 and the magnetic field generating device 400.

[0062] Referring to Figure 3 As shown, in the embodiment of the present application, the lower end surface of the first end plate 250 and the second end plate 260 can also be connected with a connecting plate 2642, and the first sliding plate 262 can be in sliding connection with the connecting plate 2642. Specifically, the lower end surface of the first sliding plate 262 can be provided with a groove 2641 matched with the connecting plate 2642, thereby realizing the sliding connection of the two. The sliding connection of the groove 2641 of the first sliding plate 262 and the connecting plate 2642 can further improve the direction accuracy and stability of the stretching device 200 when moving along the first direction. In addition, the side wall of the groove 2641 of the first sliding plate 262 towards one end of the second base plate 240 can be provided with a plurality of screw holes 2621, and the first sliding plate 262 can be fixedly connected with the upper end surface of the second base plate 240 through screws.

[0063] Referring to Figure 3 As shown, in the embodiment of the present application, one end of the second base plate 240 away from the first sliding block 264 is provided with a third end plate 270 and a fourth end plate 280 arranged along the second direction, and the second driving assembly includes a second driver 281, a second sliding plate 282 and a second guide rail 283. The two ends of the second guide rail 283 are respectively connected to the third end plate 270 and the fourth end plate 280, the second sliding plate 282 is provided with a second sliding block 284 in sliding connection with the second guide rail 283, and the second driver 281 is used to drive the second sliding block 284 to slide along the second guide rail 283.

[0064] Referring to Figure 3As shown in the embodiment of the present application, the third end plate 270 and the fourth end plate 280 are arranged at the lower end surface of the second base plate 240, and the interval distance of the third end plate 270 and the fourth end plate 280 determines the length of the second guide rail 283, i.e. the moving range of the stretching device 200 along the second direction. The second driver 281 can drive the second sliding block 284 to slide along the second guide rail 283, so as to drive the stretching device 200 to move along the second direction, and further change the distance between the sample 2000 and the light irradiation device 500. It should be noted that in the embodiment, the first driver 261 and the second driver 281 can be motors connected with the sliding blocks through transmission assemblies, or other driving devices driving the sliding blocks, which are not limited in the embodiment.

[0065] With reference to Figure 4 Or Figure 5 As shown in the embodiment of the present application, the clamping part includes two clamping pieces 221, which are arranged at intervals along the width direction of the first base plate 210, and are both connected to the fixing piece 220 to form a work station 222 for placing the sample.

[0066] It can be understood that the stretching piece 230 stretches the sample 2000 along the length direction of the first base plate 210, and in order to fix the sample 2000, with reference to Figure 4 As shown in the embodiment of the present application, the two clamping pieces 221 can be arranged at intervals along the width direction of the first base plate 210, and the interval distance can be set according to the size of the sample 2000, which is not limited in the embodiment.

[0067] With reference to Figure 2 As shown in the embodiment of the present application, the test device 1000 further includes a thermal imaging device 600 for monitoring the temperature distribution of the sample 2000, and the thermal imaging device 600 is connected to the inner wall of the working chamber 110.

[0068] With reference to Figure 2 As shown in the embodiment of the present application, the thermal imaging device 600 can be fixed to the inner wall at the rear end of the working chamber 110. In the embodiment, when the test device 1000 performs the shape memory effect test under alternating magnetic field stimulation and the shape memory effect test under laser irradiation stimulation, the temperature distribution of the sample 2000 can be detected and recorded after the sample 2000 is heated by the magnetic field generating device 400 or the light irradiation device 500, so that the temperature distribution of the polymer material under different stimulation responses can be obtained, and the shape memory performance of the material can be better obtained.

[0069] With reference to Figure 1 As shown in the embodiment of the present application, the test device 1000 further includes a box body 100, and the working chamber 110 is arranged in the box body 100, and the front end side wall of the working chamber 110 is a transparent piece.

[0070] In the embodiment of the present application, the transparent member can be a transparent heat-insulating glass, and the transparent member is arranged to allow the tester to observe the heating process of the polymer shape memory material, so as to facilitate the tester to detect the real-time state inside the working chamber 110, and ensure that the test can be carried out under monitoring. In addition, the arrangement of the heat-insulating glass can maintain the temperature inside the working chamber 110, reduce the temperature loss inside the working chamber 110, and improve the accuracy of the test.

[0071] Referring to Figure 1 In the embodiment of the present application, the test device 1000 further comprises a camera 700, which is arranged at the front side of the transparent member, and the outer peripheral wall of the box body 100 is provided with a support 120 connected with the camera 700.

[0072] In the embodiment of the present application, the camera 700 can be a camera, which can shoot the real-time state inside through the transparent member. In addition, the camera can detect the deformation variable of the sample 2000 through video data, i.e. the length change of the sample 2000, which reduces the working steps of the tester to measure the deformation variable of the sample 2000, and improves the simplicity and efficiency of the test.

[0073] Referring to Figure 1 In the embodiment of the present application, the box body 100 is provided with a control panel 800 and a display panel 810, the control panel 800 is electrically connected with the heating device 300, the magnetic field generating device 400 and the light irradiation device 500 respectively, and the control panel 800 is used to control the heating device 300, the magnetic field generating device 400 and the light irradiation device 500 respectively, and the display panel 810 is used to display the temperature of the sample 2000.

[0074] In the embodiment of the present application, the display panel 810 can display the real-time temperature of the sample 2000, and the tester can control the power of the heating device 300, the magnetic field generating device 400 or the light irradiation device 500 through the control panel 800 according to the temperature feedback, so as to more accurately adjust the real-time heating temperature of the sample 2000, and improve the accuracy of the test.

[0075] The above embodiments of the present application are described in detail in combination with the drawings, and finally it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A testing device, characterized in that, include: studio; A stretching device is provided in the working chamber. The stretching device includes a first base plate, a fixing member, and a stretching member. One end of the first base plate is connected to the fixing member, and the other end is connected to the stretching member. The fixing member is provided with a clamping part for clamping the sample. The stretching member can be connected to the sample and move along the length direction of the first base plate. A heating device capable of heating the working chamber to heat the sample; A magnetic field generating device is capable of producing an alternating magnetic field to induce a magnetocaloric effect in a sample; The illumination device can emit light of different wavelengths toward the sample to induce a photothermal effect in the sample; The magnetic field generating device is disposed on one side of the first substrate along the first direction and connected to the inner wall of the working chamber. The stretching device further includes a first driving component, which is connected to the first substrate. The first driving component is used to drive the stretching device to move toward or away from the magnetic field generating device along the first direction. The illumination device is disposed on one side of the first substrate along the second direction and connected to the inner wall of the working chamber. The second direction is perpendicular to the first direction. The stretching device also includes a second substrate and a second driving assembly. One end of the second substrate is connected to the stretching device and the other end is connected to the second driving assembly. The second driving assembly is used to drive the second substrate to move along the second direction, so as to drive the stretching device to move towards or away from the illumination device along the second direction. The first substrate has a first end plate at the end away from the fixing member, and a second end plate is provided between the fixing member and the first end plate. The first end plate and the second end plate are spaced apart along a first direction. The tensioning member passes through the first end plate and the second end plate. The first driving assembly includes a first driver, a first sliding plate, and a first guide rail. The two ends of the first guide rail are respectively connected to the first end plate and the second end plate. One end of the first sliding plate is connected to the second substrate, and the other end is provided with a first slider that is slidably connected to the first guide rail. The first driver is used to drive the first slider to slide along the first guide rail. The second substrate has a third end plate and a fourth end plate spaced apart along the second direction at one end facing away from the first slider. The second driving assembly includes a second driver, a second slide plate, and a second guide rail. The two ends of the second guide rail are respectively connected to the third end plate and the fourth end plate. The second slide plate has a second slider that is slidably connected to the second guide rail. The second driver is used to drive the second slider to slide along the second guide rail. The testing apparatus also includes a thermal imaging device for monitoring the temperature distribution of the sample, the thermal imaging device being connected to the inner wall of the chamber.

2. The testing apparatus according to claim 1, characterized in that, The clamping part includes two clamping members, which are spaced apart along the width direction of the first substrate. Both clamping members are connected to the fixing member to form a workstation for placing samples.

3. The testing apparatus according to claim 1, characterized in that, The testing device also includes a housing, the working chamber is located in the housing, and the front side wall of the working chamber is a transparent part.

4. The testing apparatus according to claim 3, characterized in that, The testing device also includes a camera device, which is spaced apart on the front side of the transparent component, and the outer peripheral wall of the box is provided with a bracket connected to the camera device.

5. The testing apparatus according to claim 3, characterized in that, The enclosure is equipped with a control panel and a display panel. The control panel is electrically connected to the heating device, the magnetic field generating device, and the light irradiation device, respectively. The control panel is used to control the heating device, the magnetic field generating device, and the light irradiation device, respectively. The display panel is used to display the temperature of the sample.

Images