Testing platform and method for characterizing interfacial adhesion energy and separation line morphology of soft materials

Abstract

The present invention provides a test platform and method for characterizing the interfacial adhesion energy and separation line morphology of soft materials. The test platform includes a peeling drive module, a force measurement module, an image acquisition module, a control system, and a peeling environment control module; the peeling drive module includes a horizontal electric displacement platform and an inclined electric displacement platform. By integrating a drive system for peeling soft materials and an image acquisition system for recording the separation line morphology during the peeling process of soft materials, the present invention can synchronously characterize the interfacial adhesion energy and separation line morphology of the soft material interface through a test platform, establish the relationship between the behavior of the interfacial adhesion energy and the separation line morphology, and provide real and effective experimental data for the study of soft interface deformation and failure mechanism. By synchronously and at the same speed of the horizontal electric displacement platform and the inclined electric displacement platform, the dynamic constancy of the spatial position of the interface separation line can be achieved, which facilitates the observation and recording of the separation line morphology over a long peeling distance.

Description

Technical Field

[0001] The present invention belongs to the technical field of soft material interfacial adhesion test, and in particular relates to a test platform and method for synchronously and in-situ characterization of soft material interfacial adhesion and separation line morphology. Background Art

[0002] Soft materials, such as hydrogels and dielectric elastomers, offer advantages such as low modulus and low energy dissipation. They have been widely used in fields such as biomedicine, soft robotics, and flexible electronics. In practical applications, soft materials are typically adhered to a substrate, forming a so-called soft material interface, also known as a soft interface. The performance of the soft interface between the soft material and the substrate is critical to the stability of product functionality. Damage to the interface can significantly impact device performance and reliability.

[0003] For soft interfaces, factors such as large deformation and nonlinear viscoelastic rheological characteristics of interface materials (including adhesives) will significantly affect the performance of the interface. The strength of soft interface performance is generally characterized by interface bonding energy. Interface bonding energy can generally be obtained through two test methods, peeling and pulling. This application is proposed for peeling tests. In the process of interface peeling, the size of the bonding energy is not only affected by the material properties of the interface material (including adhesives), but also by the peeling speed, angle and other external conditions (temperature, light and magnetic field, etc.). It is also closely related to the separation line morphology. Establishing a connection between interface bonding energy and separation line morphology is one of the key issues in understanding the deformation and failure mechanism of soft interfaces.

[0004] At present, the method of characterizing the interfacial adhesion energy through peeling experiments is: after preparing the soft material interface, peel the soft material on one side from the soft material on the other side (usually referred to as the "substrate") at a certain angle and speed from one end of the interface. During the peeling process, the peeling force is recorded by a force sensor, so that the adhesion energy of the interface can be calculated. In addition, it should be pointed out that: in this type of test, the spatial position of the interface separation line will move according to the peeling speed. This type of traditional peeling experiment can change the peeling speed and peeling angle more conveniently, but because the spatial position of the separation line will change greatly, its morphology cannot be conveniently observed and recorded for a long time and a long peeling distance. At present, there are few reports on the simultaneous observation of interfacial adhesion energy and separation line morphology during the soft interface separation process.

[0005] In addition, the soft materials that constitute the soft interface are mostly functional materials, which are sensitive to effects such as temperature, light and magnetic field. Therefore, it is very necessary to carry out simultaneous in situ characterization of the interface adhesion energy and separation line morphology under controllable conditions and develop an actively controllable interface peeling method. Summary of the Invention

[0006] The purpose of the present invention is to provide a testing platform and method for characterizing the interface adhesion energy and separation line morphology of soft materials. The present invention can complete the synchronous measurement of the interface adhesion energy and separation line morphology through a testing system; and, during the process of peeling the soft interface from the substrate, the spatial position of the interface separation line can be dynamically constant.

[0007] The present invention is achieved as follows: a test platform for characterizing the interfacial adhesion energy and separation line morphology of soft materials, comprising a peeling drive module, a force measurement module, an image acquisition module, and a control system;

[0008] The peeling drive module includes a horizontal electric displacement platform and an inclined electric displacement platform. The horizontal electric displacement platform is parallel to the horizontal plane and has a bottom plate fixed thereon for supporting the soft material interface. The inclined electric displacement platform is tilted at a certain angle to the horizontal plane. The horizontal electric displacement platform and the inclined electric displacement platform respectively control the movement direction, speed and stroke through their own controllers and are electrically connected to the control system.

[0009] The force measuring module includes a force sensor and a fixture for clamping the material on the peeled side of the soft material interface, the force sensor is fixed on the inclined electric displacement platform, and the force-bearing end of the force sensor is connected to the fixture;

[0010] The image acquisition module is used to record the morphology of the separation line during the peeling process of the soft material;

[0011] The force sensor and the image acquisition module are both electrically connected to the control system.

[0012] Furthermore, the force sensor is powered by a DC regulated power supply and has a built-in bridge. The output of the force sensor is an analog voltage signal. After signal conditioning, the analog voltage signal is collected and recorded through the analog channel of a multi-channel input and output data acquisition card via a control system based on Labiview.

[0013] Furthermore, the image acquisition module includes a trinocular inverted microscope, a light source and a camera. The trinocular inverted microscope is used to configure the optical path and light source for observing the separation line morphology. After the configuration is completed, the separation line morphology can be directly observed through the two eyepieces of the trinocular inverted microscope; the third eye of the trinocular inverted microscope is equipped with the camera. During testing, in the working mode of external triggering of the camera, the recording is started and stopped by the TTL signal. The relevant parameters of the camera are set in the camera control software. The timing of the camera's image sequence is coordinated with the timing of the force sensor output signal and the timing of the position signal of the horizontal electric displacement platform and the tilted electric displacement platform.

[0014] Furthermore, the peeling drive module also includes an XYZ three-axis fine-tuning manual displacement platform, an XY two-axis coarse-tuning manual displacement platform and a machine platform. The XY two-axis coarse-tuning manual displacement platform is fixed on the machine platform, the XYZ three-axis fine-tuning manual displacement platform is fixed on the XY two-axis coarse-tuning manual displacement platform, the horizontal electric displacement platform is fixed on the XYZ three-axis fine-tuning manual displacement platform, and the base plate is fixedly mounted on the horizontal electric displacement platform.

[0015] Furthermore, the stripping drive module also includes a horizontal support profile, an inclined support profile, a first manual displacement platform, a second manual displacement platform and a manual rotation platform; the first manual displacement platform is fixed on the horizontal support profile, and the manual rotation platform is fixed on the first manual displacement platform; the inclined support profile is fixed on the manual rotation platform, the second manual displacement platform is fixed on the inclined support profile, and the inclined electric displacement platform is fixed on the second manual displacement platform.

[0016] Furthermore, the above-mentioned testing platform also includes a temperature control module for adjusting the temperature of the separation interface, and the temperature control module includes a transparent electrically heated glass sheet and a temperature sensor; the heating voltage of the electrically heated glass sheet is provided by a programmable DC regulated power supply, and the temperature sensor is a thermocouple arranged on the surface of the electrically heated glass sheet; before the peeling begins, the required operating temperature is first set, and then the output voltage of the DC regulated power supply is controlled in combination with the real-time temperature feedback measured by the temperature sensor, thereby achieving feedback control of the temperature; during the peeling test, the temperature signal is recorded from beginning to end, and the timing of the temperature signal is coordinated with the timing of the output signal of the force sensor and the timing of the position signals of the horizontal electric displacement platform and the tilted electric displacement platform.

[0017] Furthermore, the above-mentioned test platform also includes a light control module for regulating the peeling process of the interface composed of photosensitive soft materials. The light control module includes a wavelength-adjustable light source sheet, the intensity of which is controlled by an input voltage, and the input voltage of the light source sheet is provided by a programmable DC regulated power supply; the light intensity of the light source sheet is proportional to the input voltage. During the peeling test process, the input voltage of the light source sheet is recorded from beginning to end, and the timing of the input voltage signal is coordinated with the timing of the output signal of the force sensor and the timing of the position signals of the horizontal electric displacement platform and the tilted electric displacement platform.

[0018] Furthermore, the above-mentioned test platform also includes a magnetic field control module for controlling the peeling process of the interface composed of magnetic sensitive materials, and the magnetic field control module includes an electromagnet, and the current of the electromagnet is provided by a programmable DC regulated power supply; the control of the magnetic field of the electromagnet is achieved by controlling the current flowing through the electromagnet, and the current size is controlled by the input voltage; during the peeling test process, the input voltage of the electromagnet is recorded from beginning to end, and the timing of the input voltage signal is coordinated with the timing of the output signal of the force sensor, the timing of the position signal of the horizontal electric displacement platform and the inclined electric displacement platform.

[0019] To achieve the above-mentioned object of the invention, the present invention further provides a method for characterizing the interfacial adhesion energy and separation line morphology of soft materials using any of the above-mentioned test platforms, comprising the following steps:

[0020] (1) Prepare the soft material interface according to the test requirements and fix the interface substrate of the soft material interface on a base plate;

[0021] (2) Adjust the horizontal electric displacement platform and the inclined electric displacement platform to their initial positions;

[0022] (4) Fix the bottom plate supporting the soft material interface to the corresponding position of the horizontal electric displacement platform, and connect the material on the peeled side of the soft material interface to the force sensor through a clamp, making sure to keep it in a relaxed state without loading;

[0023] (4) While keeping the material on the peeled side of the soft material interface relaxed and unloaded, start the force measurement module, continuously record the output signal of the force sensor for a period of time, and then take the average value as the reference value of the force sensor;

[0024] (5) Setting the test mode, stroke, and speed in the control system; tightening the material on one side to be peeled by individually controlling the tilting electric displacement platform;

[0025] (6) Start the test and synchronously record the position and velocity signals of the horizontal electric displacement platform and the tilt electric displacement platform, the output signal of the force sensor, and the image sequence captured by the image acquisition module.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. By integrating a drive system for peeling soft materials and an image acquisition system that records the morphology of the separation line during the peeling process of the soft material interface, the interfacial adhesion energy and separation line morphology of the soft material interface can be simultaneously characterized through a single testing platform. The relationship between the behavior of the interfacial adhesion energy and the separation line morphology can be established, providing real and effective experimental data for the study of soft interface deformation and failure mechanisms.

[0028] 2. Through the synchronous and isochronous movement of the horizontal electric displacement platform and the inclined electric displacement platform, the dynamic constancy of the spatial position of the interface separation line can be achieved, which facilitates the observation and recording of the separation line morphology over a long peeling distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of a test platform for characterizing the interfacial adhesion energy and separation line morphology of soft materials provided by an embodiment of the present invention;

[0030] Figure 2 Schematic diagram of the structure of the temperature control module provided by the embodiment of the present invention;

[0031] Figure 3 Schematic diagram of the structure of the lighting control module provided by an embodiment of the present invention;

[0032] Figure 4 It is a structural diagram of the magnetic field control module provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a communication between the internal parts of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Please see Figure 1 , shows a test platform for characterizing the interfacial adhesion energy and separation line morphology of soft materials provided in this embodiment, including a peeling drive module, a force measurement module, an image acquisition module and a control system.

[0036] The peeling drive module consists of a horizontal electric displacement platform 1 and an inclined electric displacement platform 2. The horizontal electric displacement platform 1 is parallel to the horizontal plane, while the inclined electric displacement platform 2 is tilted at a predetermined angle (adjustable between 0 and 180 degrees) to the horizontal plane. The horizontal and inclined electric displacement platforms 1 and 2 are controlled by a LabVIEW-based control system and their own controllers (in this example, two SLC-24150 piezoelectric linear drive platforms and an MSC controller) for direction, speed, and stroke, and are electrically connected to the control system. The same type of horizontal and inclined electric displacement platforms 1 and 2 can be selected based on the stroke, speed, and load level required for the peeling test.

[0037] Specifically, the peeling drive module also includes an XYZ three-axis fine-tuning manual displacement platform 3, an XY two-axis coarse-tuning manual displacement platform 4, a horizontal support profile 5, an inclined support profile 6, a first manual displacement platform 71, a second manual displacement platform 72, a manual rotation platform 8, a base plate 9 and a machine platform 10.

[0038] The XY coarse adjustment manual displacement platform 4 is fixed to the machine platform 10. The XYZ fine adjustment manual displacement platform 3 is fixed to the XY coarse adjustment manual displacement platform 4. The horizontal electric displacement platform 1 is fixed to the XYZ fine adjustment manual displacement platform 3. The base plate 9 is fixed to the horizontal electric displacement platform 1 and is used to support the interface substrate a of the soft material interface Aa. The size and shape of the base plate 9 can be changed according to testing needs. The first manual displacement platform 71 is fixed to the horizontal support profile 5. The manual rotation platform 8 is fixed to the first manual displacement platform 71; the tilting support profile 6 is fixed to the manual rotation platform 8. The second manual displacement platform 72 is fixed to the tilting support profile 6. The tilting electric displacement platform 2 is fixed to the second manual displacement platform 72.

[0039] During the peeling experiment, horizontal electric displacement platform 1 and tilted electric displacement platform 2 moved synchronously at the same linear velocity (starting and stopping simultaneously). This design ensured that the spatial position of the interface separation line remained dynamically constant during the peeling process. The movement direction, speed, and stroke of the two electric displacement platforms were controlled by a LabView-based control system, and communication between LabView and the control system was achieved through the controllers of the two electric displacement platforms.

[0040] The force measurement module includes a force sensor b and a fixture c for clamping the material A on the peeled side of the soft material interface Aa. The force sensor b is fixed on the inclined electric displacement platform 2. The force-bearing end of the force sensor b is connected to the fixture c via a magnet, which can be easily disassembled and fixed. The force sensor b is powered by a programmable DC regulated power supply d and has a built-in bridge. The force sensor b with the appropriate range can be selected according to different peeling loads. The output of the force sensor b is an analog voltage signal. After signal conditioning (amplification, filtering, etc.), the analog voltage signal is collected and recorded through the analog channel of the multi-channel input and output data acquisition card via a Labview-based control system. In addition, the output voltage of the force sensor b is converted into force through calibration.

[0041] The image acquisition module is used to record the morphology of the separation line during the soft material peeling process. It includes a trinocular inverted microscope e, a light source, and a camera g. The trinocular inverted microscope e is used to configure the optical path and light source for observing the morphology of the separation line. After the configuration is completed, the morphology of the separation line can be directly observed through the two eyepieces of the trinocular inverted microscope e. In order to continuously record the morphological evolution of the separation line for a long time, a camera g is installed on the third eye of the trinocular inverted microscope e. During the test, in the working mode of external triggering of camera g, the recording is started and stopped by TTL signals. The relevant parameters of camera g (such as frequency and exposure time) are set in the camera g control software. The timing of the image sequence captured by camera g is coordinated with the timing of the output signal of the force sensor b and the timing of the position signals of the horizontal electric displacement platform 1 and the tilted electric displacement platform 2. In this embodiment, a NIKON QS-Ri2 model camera is used, which is connected to the computer via USB and controlled by NIS Element software. Cameras with other parameters can also be selected according to specific experimental parameter requirements.

[0042] In addition to the above core modules, the test platform also includes the following stripping environment parameter control modules:

[0043] Please see Figure 2 , Temperature control module: The temperature control module is used to adjust the temperature of the separation interface, which includes a transparent electrically heated glass sheet h and a temperature sensor; the heating voltage of the electrically heated glass sheet h is provided by a programmable DC regulated power supply d. In this embodiment, indium tin oxide (ITO) transparent electrically heated glass is used as the electrically heated glass sheet h, and the temperature sensor is a thermocouple arranged on the surface of the electrically heated glass sheet h. Before the start of peeling, the required working temperature is set first, and then the output voltage of the DC regulated power supply d is controlled in combination with the real-time temperature feedback measured by the temperature sensor, thereby realizing feedback control of the temperature. During the peeling test, the temperature signal is recorded from beginning to end, and the timing of the temperature signal is coordinated with the timing of the output signal of the force sensor b and the timing of the position signal of the horizontal electric displacement platform 1 and the inclined electric displacement platform 2.

[0044] Please see Figure 3 Light Control Module: This module is used to control the peeling process of the interface composed of photosensitive soft materials. It includes a wavelength-tunable light source k. The intensity of light source k is controlled by an input voltage provided by a programmable DC regulated power supply d. In this embodiment, the intensity of light source k is proportional to the input voltage. During the peeling test, the input voltage of light source k is recorded throughout the test, and the timing of the input voltage signal is coordinated with the timing of the output signal of force sensor b and the timing of the position signals of horizontal electric displacement platform 1 and tilt electric displacement platform 2.

[0045] Please see Figure 4 Magnetic Field Control Module: This module is used to control the peeling process at interfaces composed of magnetically sensitive materials. It includes an electromagnet m, whose current is supplied by a programmable DC regulated power supply d. The magnetic field of electromagnet m is controlled by regulating the current flowing through it, which is controlled by the input voltage. During the peeling test, the input voltage of electromagnet m is recorded throughout the test, and the timing of the input voltage signal is coordinated with the timing of the output signal from force sensor b and the timing of the position signals from horizontal and tilted electric displacement platforms 1 and 2.

[0046] The functional components used in each of the above modules can also adopt other solutions. For example, in the image acquisition module, the camera's display and control parameter interface can be written into a LabVIEW-based control system through the camera's communication protocol, forming a complete integrated system. Alternatively, the camera control software provided by the camera manufacturer can be directly used, using TTL signals to start and stop recording through an external trigger interface. The synchronization of image sequences and other measurement parameters can be achieved through appropriate interpolation algorithms during data post-processing. In the temperature control module, temperature acquisition can also be performed using non-contact infrared thermal imagers.

[0047] The peeling drive module included in the test platform of this embodiment is the basis of the peeling experiment. The force measurement module and the image acquisition module are independent of each other and coordinated in time sequence, and can synchronously record the interface bonding energy and separation line morphology during the peeling process. The temperature control module, light control module and magnetic field control module for regulating the peeling environment can all be tested independently or in coordination with each other. In addition, it should be pointed out that: since the image acquisition module in this embodiment uses an optical inverted microscope, if the morphology of the contact line is to be observed, the interface substrate a material needs to be transparent. For non-transparent substrate materials, we can choose (or prepare) a transparent substrate with similar rheological properties and surface properties to the substrate body as a substitute. In general, except for some special functional materials, the rheological properties of the soft material body can be regulated by adjusting the proportion of the components during the preparation process, and the surface properties can be regulated by physical, chemical and mechanical means, which are currently relatively mature in the field of soft matter science.

[0048] This embodiment also provides a method for characterizing the interfacial adhesion energy and separation line morphology of soft materials using the above-mentioned testing platform, including the following steps:

[0049] (1) Prepare the soft material interface Aa according to the test requirements (where A is the material on the side to be peeled off and a is the interface base); then fix the soft material interface Aa on a base plate 9. In this embodiment, the base plate 9 is a colorless transparent glass carrier plate (75mm*26mm, 1mm thick). It should be noted that the material A on the side of the soft material interface Aa to be peeled off should be long enough to facilitate connection to the fixture c.

[0050] (2) Adjust the horizontal electric displacement platform 1 and the inclined electric displacement platform 2 to their initial positions; adjust the height of the rotation center of the inclined electric displacement platform 2 as needed through the first manual displacement platform 71; then, determine the peeling angle of the test by adjusting the manual rotation platform 8; and at the same time, adjust the positions of the inclined electric displacement platform 2 and the force sensor b as needed through the second manual displacement platform 72.

[0051] (3) Fix the base plate 9 supporting the soft material interface Aa to the corresponding position of the self-made connector p. Connect the material A to be peeled to the force sensor b via the clamp c, making sure to keep it in a relaxed state without loading. Adjust the position of the initial separation line by adjusting the XYZ three-axis fine adjustment manual displacement platform 3 and the XY two-axis coarse adjustment manual displacement platform 4. Combined with the trinocular inverted microscope e and camera g for observation, place it within the field of view of the trinocular inverted microscope e, and preliminarily adjust the focal length for imaging.

[0052] (4) According to the test requirements, the corresponding peeling environment control conditions are loaded for the soft material interface Aa.

[0053] (5) While keeping the material A on the peeled side relaxed and unloaded, start the force measurement module, continuously record the output of the force sensor b for a period of time, and then take the average value as the reference value of the force sensor b.

[0054] (6) Set the test mode (single-step, multi-step), stroke, and speed in the control system interface based on Labview; tighten the material A on the peeled side by individually controlling the tilted electric displacement platform 2, and further fine-tune the focal length to ensure a clear image in the camera g field of view.

[0055] (7) Start the test to realize the synchronous recording of the position and speed of the horizontal electric displacement platform 1 and the tilt electric displacement platform 2, the output of the force sensor b, the image sequence of the camera g, and the relevant signals of the corresponding external control components. The corresponding data and image sequence are written into the computer hard disk through the control system.

[0056] Additional notes on external control conditions during the testing process:

[0057] A. For peel tests requiring interface temperature control, the interface substrate a of the soft material interface Aa can be directly prepared on a transparent electrically heated glass sheet (e.g., ITO) of a certain size, directly serving as the base plate 9, which is then installed in the corresponding position of the self-made connector p in step (3). Due to the large temperature inertia, when starting to control the temperature in step (4), it is necessary to wait for a certain period of time until the temperature reaches the set value before starting the subsequent steps.

[0058] B. For peel tests that require interface illumination control, the orientation of the light source k should be adjusted based on the spatial position of the soft material interface Aa when starting the control in step (4). It is also important to add appropriate shielding and background to eliminate the influence of ambient light. When testing with light harmful to the human body (e.g., UV), protective shielding should be added.

[0059] C. For peeling tests that require interface magnetic field control, when starting control in step (4), it is necessary to combine the spatial position of the material A on the side being peeled and the orientation of the two poles of the electromagnet m.

[0060] Through the above technical solution, this embodiment can achieve the following technical effects:

[0061] 1. By integrating the driving system of the soft material interface Aa and the image acquisition system that records the morphology of the separation line during the peeling process of the soft material interface Aa, the interfacial adhesion energy and separation line morphology of the soft material interface Aa can be simultaneously characterized through a single testing platform. The relationship between the behavior of the interfacial adhesion energy and the separation line morphology can be established, providing real and effective experimental data for the study of soft interface deformation and failure mechanisms.

[0062] 2. Through the synchronous and isochronous movement of the horizontal electric displacement platform 1 and the inclined electric displacement platform 2, the dynamic constancy of the spatial position of the interface separation line can be achieved, which facilitates long-term continuous observation and recording of the separation line morphology.

[0063] 3. By configuring independent control modules for three external control factors: interface temperature, illumination, and magnetic field, the three external control factors can act independently or be coupled simultaneously based on the peeling speed and peeling angle. This allows for in-situ characterization of the effects of temperature, illumination, and magnetic field on the Aa peeling process at the soft material interface.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A testing platform for characterizing the interfacial adhesion energy and separation line morphology of soft materials, characterized by: It includes a peeling drive module, a force measurement module, an image acquisition module and a control system; The peeling drive module includes a horizontal electric displacement platform and an inclined electric displacement platform. The horizontal electric displacement platform is parallel to the horizontal plane and has a bottom plate fixed thereon for supporting the soft material interface. The inclined electric displacement platform is tilted at a certain angle to the horizontal plane. The horizontal electric displacement platform and the inclined electric displacement platform respectively control the movement direction, speed and stroke through their own controllers and are electrically connected to the control system. The force measuring module includes a force sensor and a fixture for clamping the material on the peeled side of the soft material interface, the force sensor is fixed on the inclined electric displacement platform, and the force-bearing end of the force sensor is connected to the fixture; The image acquisition module is used to record the morphology of the separation line during the peeling process of the soft material; The force sensor and the image acquisition module are both electrically connected to the control system; The peeling drive module further comprises an XYZ three-axis fine-tuning manual displacement platform, an XY two-axis coarse-tuning manual displacement platform and a machine platform, wherein the XY two-axis coarse-tuning manual displacement platform is fixed on the machine platform, the XYZ three-axis fine-tuning manual displacement platform is fixed on the XY two-axis coarse-tuning manual displacement platform, the horizontal electric displacement platform is fixed on the XYZ three-axis fine-tuning manual displacement platform, and the base plate is fixedly mounted on the horizontal electric displacement platform; Among them, the peeling drive module also includes a horizontal support profile, an inclined support profile, a first manual displacement platform, a second manual displacement platform and a manual rotation platform; the first manual displacement platform is fixed on the horizontal support profile, and the manual rotation platform is fixed on the first manual displacement platform; the inclined support profile is fixed on the manual rotation platform, the second manual displacement platform is fixed on the inclined support profile, and the inclined electric displacement platform is fixed on the second manual displacement platform.

2. The test platform according to claim 1, wherein: The force sensor is powered by a DC regulated power supply and has a built-in bridge. The output of the force sensor is an analog voltage signal. After signal conditioning, the analog voltage signal is collected and recorded through the analog channel of a multi-channel input and output data acquisition card via a control system based on Labiview.

3. The test platform according to claim 1, wherein: The image acquisition module includes a trinocular inverted microscope, a light source, and a camera. The trinocular inverted microscope is used to configure the optical path and light source for observing the separation line morphology. After the configuration is completed, the separation line morphology can be directly observed through the two eyepieces of the trinocular inverted microscope; the third eye of the trinocular inverted microscope is equipped with the camera. During testing, in the working mode of the camera external trigger, the recording is started and stopped by the TTL signal. The relevant parameters of the camera are set in the camera control software. The timing of the camera's image sequence is coordinated with the timing of the force sensor output signal and the timing of the position signals of the horizontal electric displacement platform and the tilt electric displacement platform.

4. The test platform according to any one of claims 1 to 3, characterized in that: The system further includes a temperature control module for adjusting the temperature of the separation interface, the temperature control module including a transparent electrically heated glass sheet and a temperature sensor; the heating voltage for the electrically heated glass sheet is provided by a programmable DC regulated power supply, and the temperature sensor is a thermocouple arranged on the surface of the electrically heated glass sheet; before the peeling process begins, the required operating temperature is first set, and then the output voltage of the DC regulated power supply is controlled in combination with the real-time temperature feedback measured by the temperature sensor, thereby achieving feedback control of the temperature; during the peeling test process, the temperature signal is recorded from beginning to end, and the timing of the temperature signal is coordinated with the timing of the output signal of the force sensor and the timing of the position signals of the horizontal electric displacement platform and the tilt electric displacement platform.

5. The test platform according to any one of claims 1 to 3, characterized in that: It also includes a light control module for controlling the peeling process of the interface composed of photosensitive soft materials. The light control module includes a wavelength-adjustable light source sheet. The intensity of the light source sheet is controlled by an input voltage, and the input voltage of the light source sheet is provided by a programmable DC regulated power supply. The light intensity of the light source sheet is proportional to the input voltage. During the peeling test, the input voltage of the light source sheet is recorded from beginning to end, and the timing of the input voltage signal is coordinated with the timing of the output signal of the force sensor and the timing of the position signals of the horizontal electric displacement platform and the tilted electric displacement platform.

6. The test platform according to any one of claims 1 to 3, characterized in that: It also includes a magnetic field control module for controlling the peeling process of the interface composed of magnetic sensitive materials. The magnetic field control module includes an electromagnet, and the current of the electromagnet is provided by a programmable DC regulated power supply; the control of the magnetic field of the electromagnet is achieved by controlling the current flowing through the electromagnet, and the current size is controlled by the input voltage; during the peeling test process, the input voltage of the electromagnet is recorded from beginning to end, and the timing of the input voltage signal is coordinated with the timing of the output signal of the force sensor and the timing of the position signal of the horizontal electric displacement platform and the inclined electric displacement platform.

7. A method for characterizing the interfacial adhesion energy and separation line morphology of soft materials using the test platform according to any one of claims 1 to 6, characterized in that: The following steps are involved: (1) Prepare the soft material interface according to the test requirements and fix the interface substrate of the soft material interface on a base plate; (2) Adjust the horizontal electric displacement platform and the inclined electric displacement platform to their initial positions; (3) Fix the bottom plate supporting the soft material interface to the corresponding position of the horizontal electric displacement platform, and connect the material on the peeled side of the soft material interface to the force sensor through a clamp, making sure to keep it in a relaxed state without loading; (4) While keeping the material on the peeled side of the soft material interface relaxed and unloaded, start the force measurement module, continuously record the output signal of the force sensor for a period of time, and then take the average value as the reference value of the force sensor; (5) Set the test mode, stroke, and speed in the control system; tighten the material on one side of the stripping by individually controlling the tilting electric displacement platform; (6) Start the test and synchronously record the position and velocity signals of the horizontal electric displacement platform and the tilt electric displacement platform, the output signal of the force sensor, and the image sequence captured by the image acquisition module.

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