Graphene wave-absorbing composite material detection device

Abstract

The invention relates to the technical field of material detection, and discloses a graphene wave-absorbing composite material detection device, which comprises a detection cavity, and a simulation assembly, a bearing assembly and a detection assembly which are sequentially arranged in the detection cavity along a second direction, the bearing assembly is arranged on the inner side wall of the detection cavity, and a bearing station for mounting a to-be-detected wave-absorbing material is arranged on the surface, deviating from the inner side wall of the detection cavity, of the bearing assembly; the detection end of the detection assembly is used for reciprocating in the first direction to detect the to-be-detected wave-absorbing material installed on the bearing station. And the simulation assembly is arranged between the inner side wall of the detection cavity and the bearing assembly. According to the graphene wave-absorbing composite material detection device, heating and / or vibration loading are / is performed on the bearing assembly in the detection cavity through the simulation assembly, so that the wave-absorbing material enters different simulation working conditions on the premise of not changing the mounting state and the detection alignment relationship, and multi-working-condition continuous detection of the same position is realized; and structural disturbance errors caused by working condition switching are avoided.

Description

Technical Field

[0001] This invention relates to the field of materials testing technology, specifically to a testing device for graphene microwave absorbing composite materials. Background Technology

[0002] In fifth-generation communication systems, satellite communications, and high-frequency electronic equipment, graphene absorbing materials are typically placed in metal cavities, on the inner walls of equipment, or around radio frequency modules to absorb microwave or millimeter-wave electromagnetic reflection signals generated during operation, thereby reducing cavity resonance and stray interference. In practical applications, equipment often experiences complex operating conditions such as heating, structural micro-vibration, and changes in spatial electromagnetic field distribution. These factors collectively affect the absorbing material itself and the interface between it and the mounting substrate, thus influencing its absorption performance. If the absorbing material is tested only under ideal, static conditions, it is difficult to accurately reflect its performance under actual service conditions. Therefore, existing technologies typically require testing and evaluating graphene absorbing materials by simulating operating conditions such as temperature changes, mechanical disturbances, or spatial position changes to improve the reference value of the test results for engineering applications.

[0003] In existing technologies, when conducting operational simulation testing on graphene absorbing materials, a step-by-step, multi-station testing method is typically adopted. This involves completing the reflection or absorption performance test under a specific testing condition, then transferring the absorbing material to another testing location or reinstalling it at the corresponding testing station to simulate performance changes under different operating conditions. During this testing process, the tested component inevitably undergoes disassembly, relocation, and reinstallation. Not only are there time intervals between different testing steps, but due to differences in installation benchmarks, positioning accuracy, and human operation, the positional relationship between the absorbing material and the testing source is difficult to maintain consistently at each testing stage. Especially during before-and-after comparative testing, the distance, incident angle, and alignment between the testing source and the absorbing material are prone to change. The positional deviation introduced by the shifting testing locations makes it difficult to establish a strict one-to-one correspondence between the testing data under different operating conditions. This reduces the accuracy of the test results in reflecting the true performance changes of the absorbing material and is also detrimental to accurately assessing the performance stability of the absorbing material under continuous operating conditions. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a graphene absorbing composite material detection device, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: Design a graphene microwave absorbing composite material detection device, including a detection cavity, a simulation component, a support component and a detection component arranged sequentially in the detection cavity along a second direction; The bearing assembly is disposed on the inner wall of the detection cavity, and a bearing station for mounting the absorbing material to be tested is provided on the surface opposite to the inner wall of the detection cavity. The detection end of the detection component is used to reciprocate along the first direction to detect the microwave absorbing material to be tested installed at the bearing station; The simulation component is disposed between the inner wall of the detection chamber and the support component, and is used to heat and / or generate vibration of the support component when the detection end of the detection component moves in the opposite direction in the first direction.

[0006] Optionally, the simulation component includes a heating mechanism, a vibration generating mechanism, and a driving mechanism. The driving mechanism includes a driving element and a threaded rod. One end of the threaded rod is fixedly connected to the output end of the driving element and extends along a first direction. The vibration generating mechanism is threadedly connected to the outer surface of the threaded rod. The heating mechanism is at least partially disposed on the vibration generating mechanism.

[0007] Optionally, the heating mechanism includes a support plate, a heating element, and at least two guide plates. Both guide plates are disposed on the surface of the bearing assembly facing the inner wall of the detection cavity and extend along a first direction. One end of the support plate is disposed on the vibration generating mechanism, and the other end is located between two adjacent guide plates. The heating element is disposed on the surface of the support plate located between two adjacent guide plates.

[0008] Optionally, the vibration generating mechanism includes a sleeve and an elastic metal sheet. The elastic metal sheet is fixedly connected to the outer surface of the sleeve. The end face of the sleeve is threadedly connected to a threaded rod through a threaded hole. The outer surface of the sleeve is connected to a support plate through a damping bearing.

[0009] Optionally, the heating element includes a heating wire or an induction heater, which is disposed on the surface of the support plate located between two adjacent guide plates, and the guide plates are made of thermally conductive metal.

[0010] Optionally, the bearing assembly includes a bearing plate and a support mechanism. One end of the support mechanism is fixedly connected to the inner wall of the detection chamber, and the other end is fixedly connected to the bearing plate. The bearing station is located on the surface of the bearing plate away from the inner wall of the detection chamber.

[0011] Optionally, the detection assembly includes a telescopic mechanism and a detection mechanism. The detection mechanism includes a transmitter and a receiver. Both the transmitter and receiver are located at the telescopic end of the telescopic mechanism, and the fixed end of the telescopic mechanism is located on the inner wall of the detection cavity.

[0012] Optionally, the telescopic mechanism includes an electric telescopic rod, and the telescopic end of the electric telescopic rod is provided with a trigger component. The trigger component is used to trigger the heating mechanism and the driving mechanism to operate when the detection end of the detection component moves in the opposite direction in the first direction.

[0013] Optionally, it also includes a detection chamber, wherein the detection cavity is formed inside the detection chamber.

[0014] This invention provides a graphene microwave absorbing composite material detection device, which has the following beneficial effects: This graphene-absorbing composite material testing device performs scanning testing on the absorbing material to be tested at the same support station by reciprocating the detection end of the detection component along a first direction. Specifically, the detection component can perform testing while moving along the first direction, and it can also perform testing while moving in the opposite direction. The first detection is performed when the detection end of the detection component moves along the first direction. When the detection end of the detection component moves in the opposite direction, the simulation component applies heating and / or vibration to the support component, causing the support component and the absorbing material to be tested to enter a heating and / or vibration state in their in-situ state. The result of the first detection can be directly... As a comparative example, the test can be compared with the test material entering the heating and / or vibration conditions, ensuring that the test material is always fixed in the same bearing position for continuous testing. This fundamentally avoids distance deviation, angle deviation, and alignment error introduced by changes in the test position, significantly improving the spatial consistency and comparison accuracy of the test results. By simulating the heating and / or vibration loading of the bearing component in the test cavity, the test material can enter different simulated conditions without changing the installation state and test alignment relationship, thereby achieving continuous testing under multiple conditions at the same location and avoiding structural disturbance errors caused by switching conditions. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the graphene absorbing composite material detection device of the present invention; Figure 2 This is a side view sectional structural diagram of the drive mechanism in this invention; Figure 3 This is a front view cross-sectional structural diagram of the heating mechanism in this invention; Figure 4 This is a frontal cross-sectional view of the detection cavity in this invention.

[0016] In the diagram: 11. Detection chamber; 12. Detection box; 20. Simulation component; 21. Heating mechanism; 211. Support plate; 212. Guide plate; 213. Heating element; 22. Vibration generating mechanism; 221. Sleeve; 222. Elastic metal sheet; 23. Drive mechanism; 231. Drive element; 232. Threaded rod; 30. Bearing component; 31. Bearing plate; 32. Support mechanism; 40. Detection component; 41. Telescopic mechanism; 411. Electric telescopic rod; 42. Detection mechanism; 50. Trigger component. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1 to 4 The present invention provides a technical solution: a microwave absorbing material detection device, specifically for graphene microwave absorbing composite material, that is, a graphene microwave absorbing composite material detection device that can perform continuous detection under multiple working conditions in sequence, reducing the time for replacement and transfer, improving the detection efficiency, and improving the accuracy of comparison.

[0019] Please see Figures 1 to 4 The present invention provides a technical solution: a graphene absorbing composite material detection device, comprising a detection cavity 11, a simulation component 20, a support component 30 and a detection component 40 arranged sequentially in the detection cavity 11 along a second direction; The support component 30 is disposed on the inner wall of the detection cavity 11, and a support position for mounting the microwave absorbing material to be tested is provided on the surface opposite to the inner wall of the detection cavity 11. The detection end of the detection component 40 is used to reciprocate along the first direction to detect the microwave absorbing material to be tested installed at the bearing station; The simulation component 20 is disposed between the inner wall of the detection cavity 11 and the support component 30, and is used to heat and / or generate vibration of the support component 30 when the detection end of the detection component 40 moves in the opposite direction in the first direction.

[0020] Using the detection cavity 11 as a closed and relatively stable detection space, the simulation component 20, the support component 30, and the detection component 40 are arranged sequentially along the second direction within the detection cavity 11, forming a non-interfering cooperative structure in space. The support component 30 is fixedly installed on the inner wall of the detection cavity 11, with its side facing away from the inner wall forming a support station, used to assemble the absorbing material to be tested in a stable posture and with a fixed installation reference, thereby keeping the installation position of the component to be tested relative to the detection cavity 11 unchanged throughout the entire detection process. The detection component 40 is located on the corresponding side of the support component 30, and its detection end reciprocates along the first direction: when the detection end moves toward the support station, it can perform segment-by-segment scanning detection of the absorbing material on the support station; during the process of the detection end moving in the opposite direction and resetting, it can still detect the absorbing material at the same installation position. The material is continuously subjected to comparative testing, thereby achieving a testing method in which the testing end moves while the test piece remains stationary, avoiding positioning errors introduced by moving the test piece. The simulation component 20 is arranged between the inner wall of the testing cavity 11 and the support component 30, located on the back side of the support component 30, which facilitates the provision of working condition simulation without obstructing the measurement path of the testing end. The simulation component 20 is set to start when the testing end moves in the reverse direction, heating and / or generating vibration of the support component 30, so that the support component 30 synchronously transfers heat and vibration to the test absorbing material (specifically graphene absorbing material, which is a known technology) on it. Thus, the test results during the resetting process of the testing end are compared with those during the movement along the first direction to obtain the reflection response change law under different working conditions, thereby determining whether the test absorbing material meets the application standards and improving the testing efficiency and testing range. Specifically, it can complete continuous testing and comparison under multiple working conditions such as room temperature and heating, static and vibration without transferring or reinstalling the absorbing material under test. This significantly reduces the efficiency impact caused by distance deviation, angle deviation and time interval caused by disassembly, relocation and alignment changes, and improves the consistency, comparability and repeatability of test data. At the same time, the simulation component 20 is located on the back side of the bearing component 30 and is linked to the movement process of the testing end, so that the working condition loading and testing process are completed under the same position reference. This is conducive to more realistically evaluating the absorption stability and reliability of the absorbing material under heat and micro-vibration (vibration, the amplitude and frequency of vibration can be adjusted by the vibration generating mechanism 22) when used in actual environment.

[0021] In this embodiment, as a preferred option, the simulation component 20 includes a heating mechanism 21, a vibration generating mechanism 22, and a driving mechanism 23. The driving mechanism 23 includes a driving member 231 and a threaded rod 232. One end of the threaded rod 232 is fixedly connected to the output end of the driving member 231 and extends along a first direction. The vibration generating mechanism 22 is threadedly connected to the outer surface of the threaded rod 232. The heating mechanism 21 is at least partially disposed on the vibration generating mechanism 22. The driving mechanism 23 serves as a transmission structure, with the threaded rod 232 extending along the first direction and threadedly engaging with the vibration generating mechanism 22, such that... The rotational motion of the drive component 231 can be directly converted into linear movement of the vibration generating mechanism 22 along the first direction. The heating mechanism 21 (such as a heating element, which can be a heating wire, resistance wire, or resistance rod, as is known in the prior art) is directly mounted on the vibration generating mechanism 22 and can move linearly along the first direction together with the vibration generating mechanism 22. The vibration generating mechanism 22 generates mechanical vibration during movement or after positioning and transmits it to the bearing component 30 through its own structure, simulating the actual vibration environment. The heating mechanism 21, relying on the support and positioning of the vibration generating mechanism 22, directly heats the bearing component 30. Component 30 performs contact or radiative heating to simulate heating conditions. It can apply a single heating condition or a combined heating and vibration condition in a single reciprocating scan, significantly improving the realism of the simulation and the detection efficiency. The heating mechanism 21 is driven by the drive mechanism 23 to move in the same direction as the detection end of the detection component 40, so that heating and vibration can follow or be pre-positioned on the reset path of the detection end. Furthermore, before the drive mechanism 23 drives the heating mechanism 21 and the vibration generating mechanism 22 to move relative to the detection end, the part is heated so that the detection section moves to the heated position and can be directly detected. At the same time, the heating mechanism 21 continuously heats the mounting component. Through heat conduction, the temperature of the mounting component gradually increases and the heating speed increases with the increase of heating time. The part of the mounting component that is heated first heats up faster and the temperature is relatively higher than that of the part that is heated later. Temperature sensors can be set on the mounting component to detect the specific temperature data at different points. When the experimenter wants to further increase the temperature, the power of the heating component can be controlled to increase the heating speed and the temperature during detection. More specifically, the detection end moves along the first direction to perform the first test, to determine whether the absorption performance of the absorbing material to be tested is consistent. If they are inconsistent, the absorbing material is unqualified. If they are consistent, heating and vibration tests are performed. Therefore, when the detection end moves in the opposite direction of the first direction, a second test is performed. During this process, heating and vibration are performed. The frequency and temperature of the vibration at different positions of the detection end do not affect the comparison and judgment results. Furthermore, at the detection terminal where the detection end moves in the opposite direction of the first direction, the heating mechanism 21 and the vibration generating mechanism 22 make the relative temperature of the absorbing material to be tested on the mounting assembly higher and the amplitude more obvious (both the heating mechanism 21 and the vibration generating mechanism 22 are stopped at the detection terminal position, which is a relative position, that is, the position where the vibration generating mechanism 22 stops moving). The driving component 231 can be a stepper motor, which is a well-known technology and is only referenced here for the purpose of controlling the rotation of the threaded rod 232. Furthermore, when the detection end moves along the first direction, it moves closer to the vibration generating mechanism 22, and when the detection end moves in the opposite direction along the first direction, the vibration generating mechanism 22 moves in the opposite direction along the first direction simultaneously.

[0022] In this embodiment, as a preferred solution, the heating mechanism 21 includes a support plate 211, a heating element 213, and at least two guide plates 212. Both guide plates 212 are disposed on the surface of the bearing assembly 30 facing the inner wall of the detection cavity 11 and extend along a first direction. One end of the support plate 211 is disposed on the vibration generating mechanism 22, and the other end is located between two adjacent guide plates 212. The heating element 213 is disposed on the surface of the support plate 211 located between two adjacent guide plates 212. Through the cooperation between the guide plates 212 and the support plate 211, the vibration generating mechanism 22, on which the support plate 211 is mounted, is prevented from rotating, and is stably maintained moving along the first direction. Specifically, through… The guide plate 212 acts as a conductor for the heat conduction of the heating element 213. The two guide plates 212 extending along the first direction form a fixed sliding track. The support plate 211 serves as the core connecting and force transmission component. One end of the support plate 211 is fixed to the movable vibration generating mechanism 22, and the other end is embedded between the two guide plates 212, thus restricting it to slide smoothly only along the first direction. The heating element 213 is directly installed on the part of the support plate 211 located between the two guide plates 212, ensuring that the heating element 213 can be moved by the vibration generating mechanism 22. The driving component 231 is connected in series with the heating element 213, that is, starting the driving component 231 starts the heating element 213.

[0023] In this embodiment, as a preferred option, the vibration generating mechanism 22 includes a sleeve 221 and an elastic metal sheet 222. The elastic metal sheet 222 is fixedly connected to the outer surface of the sleeve 221. The end face of the sleeve 221 is threadedly connected to the threaded rod 232 through a threaded hole. The outer surface of the sleeve 221 is connected to the support plate 211 through a damping bearing. The sleeve 221 forms a helical transmission pair with the threaded rod 232 of the drive mechanism 23 through the threaded hole on its end face, converting the rotational motion into its own linear movement along the first direction. The outer surface of the sleeve 221 is connected to the support plate 211 of the heating mechanism 21 through the damping bearing, so that the support plate 211 and the heating element 213 on it move with the sleeve 221, while filtering out some radial vibration interference. The elastic metal sheet 222 is fixed to the outer surface of the sleeve 221 as an active vibration source. Specifically, the guide plate 212 is located within the rotation radius of the elastic metal sheet 222. During operation, i.e., when the detection end moves in the opposite direction to the first direction, the drive component 231 is activated. The drive component 231 drives the threaded rod 232 to rotate. Through the connection between the threaded rod 232 and the sleeve 221, the sleeve 221 moves. Due to the damping bearing, there is a preset friction force, preventing relative movement (relative rotation) between the sleeve 221 and the support plate 211, until the support plate 211 can no longer move. At this point, due to the threaded rod 232... As the rotation continues, the sleeve 221 is threadedly connected to the threaded rod 232. At the same time, the support plate 211 is stopped and cannot move after it abuts against the inner wall of the detection cavity 11. The sleeve 221 overcomes the friction of the damping bearing and rotates with the threaded rod 232. At this time, it drives the elastic metal sheet 222 to make a circumferential motion along the sleeve 221. Since the guide plate 212 is located within the rotation radius of the elastic metal sheet 222, the elastic metal sheet 222 will intermittently touch the guide plate 212. The collision between the two generates vibration until the drive component 231 is shut off. Furthermore, this setup allows for a phased testing process through a simple structure. Initially, static testing is performed without heating or vibration; that is, the simulation component 20 is not activated, and an initial scan is conducted at room temperature without vibration. Subsequently, a heating condition is added without vibration; that is, the drive component 231 is activated, moving the sleeve 221 and support plate 211 to the working position without triggering rotation. Only the heating component 213 heats the mounting component and the microwave absorbing material to be tested, performing a hot static test. This continues until a composite condition involving both heating and vibration is introduced; that is, the elastic metal sheet 222 is triggered to collide with the guide plate 212, generating vibration. This increases the detection range, thereby more comprehensively evaluating the environmental adaptability and performance degradation law of the microwave absorbing material to be tested. The guide plate 212, support plate 211 and elastic metal sheet 222 work together to form a compact structure. They work together to achieve synchronous vibration and heating, which fundamentally avoids the problems of timing asynchrony, positioning deviation and control complexity that may be caused by using two independent motors and controllers, and significantly saves valuable space in the detection cavity 11.

[0024] In this embodiment, as a preferred option, the heating element 213 includes a heating wire or an induction heater. The heating wire or induction heater is disposed on the surface of the support plate 211 between two adjacent guide plates 212. The guide plates 212 are made of thermally conductive metal. The support plate 211 provides mechanical fixation and movement guidance, and the close contact or small gap between the support plate 211 and the thermally conductive metal guide plate 212 establishes a path for heat transfer to the bearing assembly 30. This achieves the integration of heat source, force transmission structure, and heat conduction channel. If a heating wire (resistance heating) is used, its working principle follows Joule's law. When current passes through a metal or alloy wire with resistance, electrical energy is converted into heat energy, causing the temperature of the heating wire itself to rise rapidly. This heat is transferred to the support plate 211, which is in close contact with it, through thermal conduction, and then efficiently conducted to the bearing assembly 30 via the contact surface between the support plate 211 and the thermally conductive metal guide plate 212. The guide plate 212, acting as an extended heat bridge and heat exchanger, diffuses heat along the first direction and ultimately transfers it evenly to the entire carrier plate 31 and the microwave absorbing material to be tested fixed thereon, thereby achieving overall or local heating of the microwave absorbing material to be tested. If an induction heater is used, its working principle is based on electromagnetic induction. The high-speed alternating current inside the induction heater generates a high-frequency alternating magnetic field around its coil. When this magnetic field acts on the adjacent guide plate 212 (made of ferromagnetic or highly conductive metal), eddy currents are induced inside the guide plate 212. The eddy currents generate Joule heat in the process of overcoming the material resistance, thus generating heat directly from inside the guide plate 212. This heat is also rapidly diffused along the guide plate 212 and introduced into the carrier plate 31 and the microwave absorbing material to be tested through thermal conduction, achieving rapid, non-contact heating. These are all existing known technologies, the purpose of which is to generate heat and ultimately conduct it to the microwave absorbing material to be tested.

[0025] In this embodiment, as a preferred solution, the bearing assembly 30 includes a bearing plate 31 and a support mechanism 32. One end of the support mechanism 32 is fixedly connected to the inner wall of the detection cavity 11, and the other end is fixedly connected to the bearing plate 31. The bearing station is set on the surface of the bearing plate 31 facing away from the inner wall of the detection cavity 11. One end of the support mechanism 32 is firmly connected to the inner wall of the detection cavity 11, and the other end is fixed to the bearing plate 31, thereby completely constraining the bearing plate 31 and its bearing station in space. The absorbing material sample to be tested is placed on the bearing station on the outer surface of the bearing plate 31 (i.e., the side facing away from the wall of the detection cavity 11). Further, the support mechanism 32 includes a support crossbar. One end of the support crossbar is fixedly connected to the inner wall of the detection cavity 11, and the other end is fixedly connected to a rubber pad. The other end of the rubber pad is connected to the bearing plate 31. The purpose is to avoid the rigid connection affecting the vibration of the bearing plate 31, and at the same time reduce the vibration transmission to the support crossbar and the inner wall of the detection cavity 11.

[0026] In this embodiment, as a preferred solution, the detection component 40 includes a telescopic mechanism 41 and a detection mechanism 42. The detection mechanism 42 includes a transmitter and a receiver. Both the transmitter and receiver are located at the telescopic end of the telescopic mechanism 41. The fixed end of the telescopic mechanism 41 is located on the inner wall of the detection cavity 11. The telescopic mechanism 41 can be an electric telescopic rod 411 or a telescopic cylinder, both of which are known technologies and are only cited here. The purpose is to drive the detection mechanism 42 to reciprocate along a first direction. The first direction and the second direction are not in the same direction. That is, forward and backward are both the first direction. Moving along the first direction is forward movement, and moving in the opposite direction of the first direction is backward movement, but both are on the axis of the first direction. The first direction and the second direction are used in a relative way in the description of the text. It also includes a control component for controlling the extension and retraction of the telescopic mechanism 41. The telescopic mechanism 41 can extend or retract in stages. For example, if it is formed to a total length of nine centimeters, it can extend or retract three centimeters and pause for a preset time, then extend or retract another three centimeters and pause for another preset time, until it is fully extended or fully retracted. Both the transmitter and receiver can be horn antennas. The control component can also be equipped with a network analyzer to control and analyze the transmission and reception of waves. This is existing known technology and is only cited here.

[0027] In this embodiment, as a preferred solution, the telescopic mechanism 41 includes an electric telescopic rod 411. The telescopic end of the electric telescopic rod 411 is provided with a trigger component 50. The trigger component 50 is used to trigger the heating mechanism 21 and the driving mechanism 23 to operate when the detection end of the detection component 40 moves in the reverse direction in the first direction. When the detection end completes the forward (outward) scan and begins to move in the reverse (backward) direction, the trigger component 50 is activated and then automatically switches from the room temperature static detection mode to the thermal / vibration simulation detection mode. The device can greatly improve the detection efficiency and automation level without human intervention, and further ensure the rigor of the comparative experiment and the high reliability of the data. Specifically, the trigger component 50 can be a displacement sensor, connected to the control component via its output. The control component controls the operation of the heating element 213 and the driving element 231 based on the signal from the position sensor. Alternatively, it can be two contacts. A groove is provided at the telescopic end of the telescopic mechanism 41. One contact is fixedly mounted on the inner wall of the groove, while the other contact can slide within the groove and simultaneously contact the inner bottom wall of the detection cavity 11. When the telescopic end of the telescopic mechanism 41 extends, the movable contact is subjected to frictional force with the inner bottom wall of the detection cavity 11 and will adhere to the other wall of the groove. When the telescopic end retracts, the movable contact is subjected to frictional force with the inner bottom wall of the detection cavity 11 and will move to adhere to the fixed contact. The two contacts can be connected in series in the circuit of the heating element 213 and the driving element 231, or they can transmit a trigger signal to the control component. The control component controls the driving element 231 and the heating element 213 to start by receiving the trigger signal. At the same time, after a preset start time, it controls the driving element 231 to reverse.

[0028] It also includes a detection chamber 12, with a detection cavity 11 located inside the detection chamber 12.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for graphene absorbing composite materials, characterized in that: It includes a detection cavity (11), a simulation component (20), a support component (30) and a detection component (40) arranged sequentially in the detection cavity (11) along the second direction; The bearing assembly (30) is disposed on the inner wall of the detection cavity (11), and a bearing station for installing the absorbing material to be tested is provided on the surface opposite to the inner wall of the detection cavity (11). The detection end of the detection component (40) is used to reciprocate along the first direction to detect the microwave absorbing material to be tested installed at the bearing position; The simulation component (20) is disposed between the inner wall of the detection cavity (11) and the support component (30) for heating and / or generating vibration of the support component (30) when the detection end of the detection component (40) moves in the opposite direction in the first direction.

2. The graphene absorbing composite material detection device according to claim 1, characterized in that: The simulation component (20) includes a heating mechanism (21), a vibration generating mechanism (22), and a driving mechanism (23). The driving mechanism (23) includes a driving member (231) and a threaded rod (232). One end of the threaded rod (232) is fixedly connected to the output end of the driving member (231) and extends along a first direction. The vibration generating mechanism (22) is threadedly connected to the outer surface of the threaded rod (232). The heating mechanism (21) is at least partially disposed on the vibration generating mechanism (22).

3. The graphene absorbing composite material detection device according to claim 2, characterized in that: The heating mechanism (21) includes a support plate (211), a heating element (213), and at least two guide plates (212). Both guide plates (212) are disposed on the surface of the bearing assembly (30) facing the inner wall of the detection cavity (11) and extend along a first direction. One end of the support plate (211) is disposed on the vibration generating mechanism (22), and the other end is located between two adjacent guide plates (212). The heating element (213) is disposed on the surface of the support plate (211) located between two adjacent guide plates (212).

4. The graphene absorbing composite material detection device according to claim 3, characterized in that: The vibration generating mechanism (22) includes a sleeve (221) and an elastic metal sheet (222). The elastic metal sheet (222) is fixedly connected to the outer surface of the sleeve (221). The end face of the sleeve (221) is threadedly connected to the threaded rod (232) through a threaded hole. The outer surface of the sleeve (221) is connected to the support plate (211) through a damping bearing.

5. The graphene absorbing composite material detection device according to claim 3, characterized in that: The heating element (213) includes a heating wire or an induction heater, which is disposed on the surface of the support plate (211) between two adjacent guide plates (212), and the guide plates (212) are made of thermally conductive metal.

6. The graphene absorbing composite material detection device according to claim 1, characterized in that: The bearing assembly (30) includes a bearing plate (31) and a support mechanism (32). One end of the support mechanism (32) is fixedly connected to the inner wall of the detection cavity (11), and the other end is fixedly connected to the bearing plate (31). The bearing station is located on the surface of the bearing plate (31) away from the inner wall of the detection cavity (11).

7. The graphene absorbing composite material detection device according to claim 2, characterized in that: The detection component (40) includes a telescopic mechanism (41) and a detection mechanism (42). The detection mechanism (42) includes a transmitter and a receiver. The transmitter and receiver are both located at the telescopic end of the telescopic mechanism (41), and the fixed end of the telescopic mechanism (41) is located on the inner wall of the detection cavity (11).

8. The graphene absorbing composite material detection device according to claim 7, characterized in that: The telescopic mechanism (41) includes an electric telescopic rod (411), and the telescopic end of the electric telescopic rod (411) is provided with a trigger component (50). The trigger component (50) is used to trigger the heating mechanism (21) and the driving mechanism (23) to operate when the detection end of the detection component (40) moves in the opposite direction in the first direction.

9. The graphene absorbing composite material detection device according to claim 1, characterized in that: It also includes a detection chamber (12), wherein the detection cavity (11) is located inside the detection chamber (12).

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