CN210181489U - Preparation device and system of magnetorheological elastomer - Google Patents
Preparation device and system of magnetorheological elastomer Download PDFInfo
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- CN210181489U CN210181489U CN201921421515.3U CN201921421515U CN210181489U CN 210181489 U CN210181489 U CN 210181489U CN 201921421515 U CN201921421515 U CN 201921421515U CN 210181489 U CN210181489 U CN 210181489U
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Abstract
The utility model discloses a preparation device and a system of a magneto-rheological elastomer, wherein the preparation device comprises a horizontal magnetic circuit module of an XY plane, a vertical magnetic circuit module of a Z axis, a magnetic field intensity detection coil and a heating module; the horizontal magnetic circuit module is used for exciting magnetic fields in the X-axis direction and the Y-axis direction; the vertical direction magnetic circuit module is used for exciting a magnetic field in the Z-axis direction of the three-dimensional magnetic field; the MREs solution container is disposed in the center of a three-dimensional magnetic field; the magnetic field intensity detection coils are arranged at corresponding positions of the MREs solution container and are used for detecting the distribution of a three-dimensional magnetic field; the heating module is used for heating and curing the magnetized MREs solution in the MREs solution container. The utility model discloses a preparation facilities of magnetic current becomes elastomer material through the different dimensions that arouse three-dimensional magnetic field, can produce one-dimensional constant magnetic field, plane two-dimensional rotating magnetic field or compound three-dimensional magnetic field to satisfy the preparation of different chain structure magnetic current becomes elastomer.
Description
Technical Field
The utility model relates to a preparation technical field of magnetic current becomes elastomer, especially relate to the preparation facilities and the system of the induced magnetic current becomes elastomer of three-dimensional magnetic field of magnetic particle polymeric structure in the magnetic current becomes material.
Background
Magnetorheological Elastomers (MREs) are high-elasticity intelligent composite materials formed by dispersing soft magnetic ferromagnetic particles with the size ranging from nanometer to micrometer in a high molecular polymer matrix with a visco-plastic state by physical or chemical means and the like. Under the action of an external magnetic field, the internal particles of the MREs are instantaneously magnetized, and the particles interact with each other, so that the rigidity, the damping and other properties of the MREs are changed, and the MREs become a novel intelligent material with real-time controllable mechanical properties. The main factors affecting the performance of MREs materials include the volume fraction of the matrix material, the dispersant (ferromagnetic particles), the properties of the dispersant (particle size, composition, morphology, etc.), and the strength of the applied magnetic field. Over the past several decades, researchers have designed and produced various types of MREs materials based on different soft magnetic particulate materials, different matrix materials, different particle sizes, different particle volume fractions, different particle chain directions, and different curing processes.
The mode of polymerization of magnetic particles within the matrix is a key factor affecting the performance of MREs materials. At present, in the preparation process of the magnetorheological elastomer, most research institutions generally adopt a one-dimensional (unidirectional) constant magnetic field to induce the magnetic particles, so that the magnetic particles are in a straight-chain structure in the direction of the magnetic field; a few research institutions adopt a two-dimensional rotating magnetic field to induce the magnetic particles, so that the magnetic particles are in a single disc-shaped structure. However, the polymerization mode of the magnetic particles is induced in a three-dimensional space, so that no device for preparing novel MREs materials exists at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a preparation facilities and system of magnetic current becomes elastomer for magnetic particle polymeric structure's in the magnetic current becomes material three-dimensional magnetic field is induced, with some shortcomings of overcoming the prior art, makes the polymeric structure of magnetic particle break through present chain form and individual layer disc structure in the MREs material, thereby prepares novel MREs material.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a preparation device of a magnetorheological elastomer comprises a horizontal magnetic circuit module of an XY plane, a vertical magnetic circuit module of a Z axis, a magnetic field intensity detection coil and a heating module; the horizontal magnetic circuit module is used for exciting magnetic fields in the X-axis direction and the Y-axis direction of the three-dimensional magnetic field; the vertical direction magnetic circuit module is used for exciting a magnetic field in the Z-axis direction of the three-dimensional magnetic field; the MREs solution container is placed in the center of the three-dimensional magnetic field; the magnetic field intensity detection coil is arranged at the position where the MREs solution container is located and used for detecting the distribution of a three-dimensional magnetic field; the heating module is used for solidifying the magnetized MREs solution in the MREs solution container.
Furthermore, the horizontal magnetic circuit module comprises a horizontal magnetic circuit iron yoke, an X-direction exciting coil and a Y-direction exciting coil, wherein the horizontal magnetic circuit iron yoke is of a square frame structure, and extension sections are arranged on the periphery of the frame towards the center of the frame; the X-direction exciting coil is sleeved on the two opposite extension sections in the X-axis direction and used for exciting a magnetic field in the X-axis direction; the Y-direction exciting coil is sleeved on the two opposite extension sections in the Y-axis direction and used for exciting a magnetic field in the Y-axis direction.
Furthermore, the vertical magnetic circuit module comprises a vertical magnetic circuit iron yoke and a vertical exciting coil, and the vertical magnetic circuit iron yoke forms a C-shaped structure; the two ends of the opening of the C-shaped structure are an upper pole head and a lower pole head which are opposite along the vertical direction; the vertical direction exciting coil is sleeved on the vertical direction magnetic circuit iron yoke and used for exciting a magnetic field in the Z direction; the heating module is arranged at the upper end of the lower pole head, and the MREs solution container is borne above the heating module.
Further, the upper pole head is a vertically movable pole head which can move relative to the vertically magnetic circuit iron yoke.
Furthermore, the heating module comprises a temperature-controllable pole head and a pole head heater, the temperature-controllable pole head is arranged at the upper end of the lower pole head and used for bearing the MREs solution container and heating and solidifying the MREs solution in the MREs solution container, the pole head heater heats the temperature-controllable pole head, and a temperature detection feedback device is arranged on the heating module.
A preparation system of a magnetorheological elastomer comprises a computer, a signal generator, a power amplifier, a signal detection module and a preparation device, wherein the preparation device is the preparation device of the magnetorheological elastomer; the signal detection module is used for acquiring signals induced by a magnetic field intensity detection coil of the preparation device; the computer is connected with the signal detection module and the signal generator, and controls the amplitude and the phase of the output waveform of the signal generator by processing the signal detected by the signal detection module, so that the aim of controlling the shape of a magnetic field in the MREs container is fulfilled, and the polymerization structure of magnetic particles in the MREs material is controlled; the power amplifier is used for amplifying the amplitude of the waveform output by the signal controller.
The advantages and effects are as follows:
in the device of the utility model, the magnetic field excitation part adopts a three-dimensional magnetic field with X, Y, Z axes which are mutually vertical, thereby reducing the mutual influence between magnetic circuits;
the iron yoke in the vertical direction adopts a C-shaped movable iron core structure, so that the material can be reduced, the cost is saved, the weight of the iron core is reduced, and the magnetic pressure drop generated by seams is reduced;
in the preparation process of the MREs material, the device can be used for generating a single one-dimensional constant magnetic field, can also be used for generating a planar two-dimensional rotating magnetic field, and can even combine the two magnetic fields to form a composite three-dimensional magnetic field. The multifunctional device realizes multiple purposes, simplifies the structure of the device and saves the manufacturing cost.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a manufacturing apparatus of the present invention;
FIG. 2 is a schematic vertical sectional view of the manufacturing apparatus of the present invention;
fig. 3 is a schematic diagram of the horizontal two-dimensional rotating magnetic field excitation part of the preparation system of the present invention.
Reference numerals:
1-a vertically movable pole head;
2. 8-Y direction exciting coil;
3. 9-X direction exciting coil;
4-horizontal magnetic circuit iron yoke;
5-a pole head heater;
6. 11-vertical direction exciting coil;
7. 10-vertical magnetic circuit iron yoke;
12-MREs solution container;
13-temperature controllable pole head;
14-magnetic field strength detection coil.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will be further explained with reference to the drawings:
example one
As shown in fig. 1-3, the utility model discloses a preparation device of magnetorheological elastomer for the preparation of magnetorheological elastomer, define X, Y, Z mutually perpendicular and form a three-dimensional coordinate system space, the device mainly comprises the horizontal direction magnetic circuit module 100 of XY plane, the vertical direction magnetic circuit module 200 of Z axle, polar head heater 5, controllable polar head of temperature 13 and magnetic field intensity detection coil 14.
The magnetic circuit module 200 in the vertical direction of the Z axis is composed of magnetic circuit iron yokes 7 and 10 in the vertical direction, a movable pole head 1 in the vertical direction and exciting coils 6 and 11 in the vertical direction; the magnetic circuit iron yokes 7 and 10 in the vertical direction are connected into a whole to form a C-shaped structure, and an upper pole head and a lower pole head are formed at the opening of the C-shaped structure; the upper pole head is a movable pole head 1 in the vertical direction, the lower pole head is a temperature-controllable pole head 13, and the movable pole head 1 in the vertical direction and the temperature-controllable pole head 13 are arranged oppositely in the vertical direction; the vertical movable pole head 1 and the temperature controllable pole head 13 are respectively arranged at two ends of the vertical magnetic circuit iron yokes 7 and 10 and are magnetized to form a vertical magnetic circuit; an MREs solution container 12 is carried at the upper end of the temperature controllable pole head 13; the vertical direction exciting coils 6 and 11 are sleeved on the vertical direction magnetic circuit iron yokes 7 and 10, an annular magnetic field is generated among the vertical direction movable pole head 1, the temperature controllable pole head 13 and the vertical direction magnetic circuit iron yokes 7 and 10, and a space between the vertical direction movable pole head 1 and the temperature controllable pole head 13 is expressed as a magnetic field in the Z direction; the pole head heater 5 is sleeved on the temperature-controllable pole head 13 and heats the temperature-controllable pole head 13. The vertical magnetic circuit iron yoke adopts a C-shaped movable iron core structure, and the structure has the advantages that: the material is reduced, the cost is saved, the weight of the iron core is reduced, and the magnetic pressure drop generated by the joint is reduced.
The XY plane horizontal direction magnetic circuit module 100 is composed of a horizontal direction magnetic circuit iron yoke 4, X direction exciting coils 3 and 9 and Y direction exciting coils 2 and 8, wherein the horizontal direction magnetic circuit iron yoke 4 is a square frame structure, and the middle part of the periphery of the frame is provided with an extension section towards the center of the frame; the X-direction exciting coils 3 and 9 are respectively sleeved on the two extension sections in the X-axis direction and used for exciting a magnetic field in the X-axis direction; the Y-direction exciting coils 2 and 8 are respectively sleeved on the two extension sections in the Y-axis direction and used for exciting the magnetic field in the Y-axis direction.
The vertical direction magnetic circuit module 200 and the horizontal direction magnetic circuit module 100 are excited to form a three-dimensional magnetic field, and the center of the MREs solution container 12 is located at the origin position of the three-dimensional magnetic field, which is located in the middle of the center of the horizontal direction magnetic circuit module 100 and the space between the vertically movable pole head 1 and the temperature controllable pole head 13 of the vertical direction magnetic circuit module 200. In use, the vertically movable pole head 1 can be moved, rotated or removed relative to the vertically magnetic circuit yoke to facilitate placement of MREs solution containers 12 carrying MREs solutions.
In the use process, the current of the X-direction exciting coils 3 and 9 and the current of the Y-direction exciting coils 2 and 8 are respectively controlled, the wave forms of the magnetic fields in the X-axis direction and the Y-axis direction and the phase difference between the magnetic fields are controlled, and the purpose of controlling the shape of the magnetic field in the horizontal direction is achieved.
In the preparation process of the magnetorheological elastomer (MREs) material, the dimensions and the strength of the three-dimensional magnetic field between the vertically movable pole head 1 and the temperature controllable pole head 13 are controlled by controlling the current amplitude of the exciting coils of the horizontal magnetic circuit module 100 and the vertical magnetic circuit module 200. By controlling the temperature of the pole head heater 5, the temperature of the temperature controllable pole head 13 can be controlled, thereby controlling the curing time of the solution in the MREs solution container 12.
Example two
As shown in fig. 3, the present invention discloses a system for preparing a magnetorheological elastomer, which comprises a computer (not shown), a signal generator 17, a power amplifier 16, a signal detection module 15, and a device according to the first embodiment, wherein the computer is connected with the signal detection module 15 and the signal generator 17.
The signal detection module 15 is connected to the magnetic field strength detection coil 14, the signal detection module 15 detects a magnetic field signal generated by the magnetic field strength detection coil 14, the signal detected by the signal detection module 15 is processed, and the signal generator 17 is controlled to output the amplitude and the phase of a waveform through the power amplifier 16, so that the purpose of controlling the magnetic field shape of the solution in the MREs solution container 12 is achieved, and the polymerization structure of the magnetic particles in the MREs material is controlled.
The preparation method of the magnetorheological elastomer comprises the following steps:
by the magnetorheological elastomer preparation device in the first embodiment, a three-dimensional magnetic field with X, Y, Z axes perpendicular to each other to form a three-dimensional coordinate system can be generated, MREs solution in the three-dimensional magnetic field is magnetized, and then the magnetized MREs solution is cured; the magnetic field intensity of the magnetization X, Y, Z axial direction can be adjusted and changed independently; during the magnetization process, the magnetic field intensity can be detected and fed back, and the magnetization can be adjusted according to the detection and feedback so as to achieve the expected magnetization structure and intensity.
The specific application is as follows:
when the MREs material needs to obtain a unidirectional chain structure of magnetic particles, the horizontal magnetic circuit module 100 does not work, and a constant magnetic field in the vertical direction can be formed in the MREs solution container 12 only by introducing constant current with certain intensity into the two vertical direction exciting coils 6 and 11 of the vertical magnetic circuit module 200, so that the magnetic particles in the MREs material are in the chain structure, and the curing time of the MREs solution is controlled by controlling the temperature of the temperature controllable pole head.
When the MREs material needs to obtain a single-layer disc-shaped structure of magnetic particles, the magnetic circuit module 200 in the vertical direction does not work, sinusoidal alternating currents with equal amplitude and 90-degree phase difference are introduced into the X-direction exciting coils 3 and 9 and the Y-direction exciting coils 2 and 8 of the magnetic circuit module 100 in the horizontal direction, a circular rotating magnetic field can be formed in the MREs solution container 12, at the moment, the magnetic particles in the MREs solution can attract each other and rotate, and finally a circular disc-shaped polymeric structure is formed. If sine alternating currents with unequal amplitudes and 90 degrees of phase difference or sinusoidal alternating currents with equal amplitudes and 90 degrees of phase difference are introduced into the X-direction exciting coils 3 and 9 and the Y-direction exciting coils 2 and 8, an elliptical rotating magnetic field is formed in the MREs solution container 12, and at the moment, magnetic particles in the MREs solution form an elliptical disc-shaped polymeric structure.
The device can also enable the horizontal magnetic circuit module 100 and the vertical magnetic circuit module 200 to work simultaneously, so as to form a magnetic field with a more complex shape, and induce magnetic particles in MREs solution to form a more complex structure, thereby achieving the purpose of preparing novel MREs materials.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A preparation device of a magnetorheological elastomer is characterized in that: the magnetic circuit module comprises a horizontal magnetic circuit module (100) of an XY plane, a vertical magnetic circuit module (200) of a Z axis, a magnetic field intensity detection coil (14) and a heating module;
the horizontal magnetic circuit module (100) is used for exciting magnetic fields in the X-axis direction and the Y-axis direction of the three-dimensional magnetic field;
the vertical direction magnetic circuit module (200) is used for exciting a magnetic field in the Z-axis direction of the three-dimensional magnetic field;
an MREs solution container (12) is disposed in the center of the three-dimensional magnetic field;
the magnetic field intensity detection coil (14) is arranged at the position where the MREs solution container (12) is located and used for detecting the distribution of a three-dimensional magnetic field;
the heating module is used for heating and solidifying the magnetized MREs solution in the MREs solution container (12).
2. The apparatus of claim 1, wherein: the horizontal magnetic circuit module (100) comprises a horizontal magnetic circuit iron yoke (4), X-direction exciting coils (3, 9) and Y-direction exciting coils (2, 8), wherein the horizontal magnetic circuit iron yoke (4) is of a square frame structure, and the middle part of the periphery of the frame is provided with an extension section towards the center of the frame; the X-direction exciting coils (3 and 9) are sleeved on two opposite extension sections in the X direction and are used for exciting a magnetic field in the X-axis direction; y-direction exciting coils (2, 8) are sleeved on two opposite extension sections in the Y direction and used for exciting a magnetic field in the Y-axis direction.
3. The apparatus of claim 1, wherein: the vertical magnetic circuit module (200) comprises a vertical magnetic circuit iron yoke and vertical exciting coils (6, 11), wherein the vertical magnetic circuit iron yoke is of a C-shaped structure, and an upper pole head and a lower pole head which are opposite along the vertical direction are arranged at two ends of an opening of the C-shaped structure; the vertical direction exciting coils (6, 11) are sleeved on the vertical direction magnetic circuit iron yokes (7, 10) and are used for exciting a magnetic field in the Z direction; the heating module is arranged at the upper end of the lower pole head, and the MREs solution container (12) is borne above the heating module.
4. The apparatus of claim 3, wherein: the upper pole head is a vertically movable pole head (1) which can move relative to a vertically magnetic circuit iron yoke.
5. The apparatus of claim 3, wherein: the heating module comprises a temperature-controllable pole head (13) and a pole head heater (5), the temperature-controllable pole head (13) is arranged at the upper end of the lower pole head and used for bearing the MREs solution container (12) and heating and solidifying the MREs solution in the MREs solution container (12), the pole head heater (5) heats the temperature-controllable pole head (13), and a temperature detection feedback device is arranged on the heating module.
6. A preparation system of a magnetorheological elastomer is characterized in that: comprises a computer, a signal generator, a power amplifier, a signal detection module and a preparation device,
the preparation device is a preparation device of the magnetorheological elastomer according to any one of claims 1 to 5;
the signal detection module is used for acquiring signals induced by a magnetic field intensity detection coil of the preparation device;
the computer is connected with the signal detection module and the signal generator, and controls the amplitude and the phase of the output waveform of the signal generator by processing the signal detected by the signal detection module, so that the aim of controlling the shape of a magnetic field in the MREs container is fulfilled, and the polymerization structure of magnetic particles in the MREs material is controlled; the power amplifier is used for amplifying the amplitude of the waveform output by the signal controller.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398997A (en) * | 2019-08-29 | 2019-11-01 | 厦门理工学院 | A kind of preparation facilities of magnetic rheology elastic body, system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398997A (en) * | 2019-08-29 | 2019-11-01 | 厦门理工学院 | A kind of preparation facilities of magnetic rheology elastic body, system and method |
| CN110398997B (en) * | 2019-08-29 | 2024-02-06 | 厦门理工学院 | Magnetorheological elastomer preparation device, magnetorheological elastomer preparation system and magnetorheological elastomer preparation method |
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