CN114264701A - Device and method for testing electrical property of material under multiple physical fields - Google Patents
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- CN114264701A CN114264701A CN202111623395.7A CN202111623395A CN114264701A CN 114264701 A CN114264701 A CN 114264701A CN 202111623395 A CN202111623395 A CN 202111623395A CN 114264701 A CN114264701 A CN 114264701A
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Abstract
The invention discloses a device and a method for testing the electrical property of a material under multiple physical fields, which can test the electrical property of a multiferroic liquid material under multiple fields. Including base, upper cover, cylindrical electrode, high temperature and high pressure resistant insulating sleeve, withstand voltage reinforcement cover, base, cylindrical electrode, upper cover from the bottom up set up with one heart, and the laminating of path section of cylindrical electrode and base, high temperature and high pressure resistant insulating sleeve, withstand voltage reinforcement cover from inside to outside overlap on cylindrical electrode, the laminating of high temperature and high pressure resistant insulating sleeve and cylindrical electrode, withstand voltage reinforcement cover forms sealedly, cylindrical electrode highly is less than high temperature and high pressure resistant insulating sleeve's height, makes the interior accommodation space who forms test material of high temperature and high pressure resistant insulating sleeve, stretches into in the accommodation space of test material on the upper cover path section.
Description
Technical Field
The invention relates to the technical field of material testing, in particular to a device and a method for testing electrical property of a material under multiple physical fields.
Background
The radar is a 'thousand-miles' in modern war, and the phase shifter is a core component of the radar. With the development of modern war towards digitization, self-adaptation, intellectualization and multi-functionalization, the development of a novel phase shifter integrating the advantages of ferrite and ferroelectric phase shifters is imminent. The magnetoelectric coupling effect of multiferroic materials is expected to produce a novel magnetoelectric phase shifter with excellent performance. The premise and basis for realizing the technology are materials with strong magnetic and electric coupling effects at room temperature. The core-shell structure magnetoelectric composite material is easier to realize strong coupling due to large core-shell interface proportion, but the magnetic/polarization direction of the core-shell structure magnetoelectric composite material is difficult to change, so that the enhancement of the magnetoelectric coupling effect is restricted. The group develops a new method, and by utilizing the characteristic that a magnetic/electric dipole in liquid can rotate under an external field so as to change the magnetic/polarization direction of the magnetic/electric dipole, the core-shell structure magnetoelectric composite particles are dispersed in the liquid to construct multiferroic liquid, and the magnetic/polarization direction of the particles is changed through the action of an electric/magnetic field so as to enhance magnetoelectric coupling.
The Multiferroic liquid (or Multiferroic fluid) is not strictly a "liquid" Multiferroic material, but is a stable colloidal system formed by uniformly dispersing Multiferroic fine particles having a particle size of about 10nm in a base liquid (fluid carrier) and achieving agglomeration resistance by adsorbing ions (repulsive charge) or long-chain molecules (potential) on the surface. The nanoparticle generally refers to a nanoparticle or a nanowire having multiferroic properties, and the base liquid is generally water, an organic liquid, or an organic aqueous solution.
Compared with a solid multiferroic material, the multiferroic liquid has the following characteristics: 1. the multiferroic material is flowable, and its morphology is amorphous; 2. the multiferroic particles have ferroelectricity and magnetism, so the multiferroic particles can rotate under the action of an electric field or a magnetic field, the coercive field of the multiferroic particles is smaller because the multiferroic particles are in liquid, and the multiferroic particles can be more easily turned under the action of the electric field or the magnetic field because of Brownian motion. 3. Under the action of an electric field or a magnetic field, the electric domains in the solid multiferroic material can be oriented only along some orientations close to the direction of the electric field, not necessarily along the direction of the electric field, and for ferroelectric liquids, the electric domains can be oriented completely along the direction of the electric field because the ferroelectric particles can freely rotate in the liquid.
Although multiferroic liquids have ferroelectricity, magnetism and fluidity, and thus may have many unique electrical, magnetic, hydrodynamic, optical and acoustical properties, multiferroic liquids have both the magnetoelectric properties of solid multiferroic materials and the fluidity of liquids. Therefore, measuring the properties of multiferroic liquids requires not only measuring the magnetoelectric properties, but also taking into account the fluidity of the liquid. Therefore, a measuring device for ordinary solid materials cannot be handled. The existing device for testing the performance of the multiferroic liquid cannot test the electrical performance and the magnetoelectric coupling effect of the multiferroic liquid under the condition of multi-fields (electric field, magnetic field, pressure and temperature).
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a device and a method for testing the electrical property of a material under multiple physical fields, which can test the electrical property of a multiferroic liquid material under multiple fields.
The purpose of the invention is realized as follows:
an electrical property testing device for materials under multiple physical fields,
comprises a base, an upper cover, a cylindrical electrode, a high-temperature and high-pressure resistant insulating sleeve and a pressure resistant reinforcing sleeve,
the base is in a convex shape and is a conductor, a lower insulating sealing sleeve is sleeved on the small-diameter section of the base, and sealing is formed between the small-diameter section of the base and the lower insulating sealing sleeve;
the upper cover is in an inverted convex shape, an upper insulating sealing sleeve is sleeved on the small-diameter section of the upper cover, sealing is formed between the small-diameter section of the upper cover and the upper insulating sealing sleeve, a first limiting disc is fixed at the end part of the small-diameter section of the upper cover to form axial limiting on the upper insulating sealing sleeve, and the upper cover and the first limiting disc are both conductors;
the cylindrical electrode comprises a convex electrode base body, a small-diameter section of the electrode base body is sleeved with a middle insulating sealing sleeve, a seal is formed between the small-diameter section of the electrode base body and the middle insulating sealing sleeve, a second limiting disc is fixed at the end part of the electrode base body to form axial limiting of the centering insulating sealing sleeve, and the electrode base body and the second limiting disc are both conductors;
the utility model discloses a test material's test material, including base, cylindrical electrode, upper cover, pressure-resistant reinforcement cover, pressure-resistant insulation sleeve, pressure-resistant reinforcement cover, pressure-resistant insulation sleeve, pressure-resistant reinforcement cover, pressure-resistant insulation sleeve is sealed.
Preferably, the material of the high-temperature and high-pressure resistant insulating sleeve is polyvinyl fluoride.
Preferably, the material of the pressure-resistant reinforcing sleeve is stainless steel.
Preferably, the small diameter section of the upper cover is in threaded fit with the first limiting disc, and the end part of the electrode base body is in threaded fit with the second limiting disc.
Preferably, the diameter of the large-diameter section of the base is larger than the outer diameter of the lower insulating sealing sleeve.
The method for testing the electrical property of the material under multiple physical fields comprises the steps of placing the testing device in a required physical field, connecting a base and an upper cover with a testing instrument through leads respectively, and testing the electrical property of the material through the testing instrument.
Preferably, the electrical property comprises at least one of conductivity, dielectricity, ferroelectricity, piezoelectricity.
Preferably, the required physical field comprises at least one of the following physical fields: electric field, pressure, magnetic field, temperature.
Preferably, the base and the upper cover are respectively connected with a power supply through leads, and the base and the upper cover form a capacitor to apply an electric field to the test material; placing the testing device in a heating table or a heating liquid to form different temperature fields; placing the testing device in a magnet, an electromagnet or an electromagnetic coil to form different magnetic fields; and applying pressure to the test material through the upper cover to form different pressure fields.
Preferably, the test material is a multiferroic liquid.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the electrical property and the magnetoelectric coupling effect of the multiferroic liquid material can be tested under multiple fields (electric field, magnetic field, pressure and temperature). The device can also be used for testing the performance of other liquids (solution, magnetic liquid, electrorheological liquid and the like) and gases and solids (such as ceramics) in a plurality of physical fields, has wide application range, and is particularly popularized and applied to the aspect of testing multiferroic liquid materials.
Simple structure, convenient combination, dismantlement.
Drawings
FIG. 1 is a schematic view of the assembly process of the base;
FIG. 2 is a schematic view of the assembly process of a cylindrical electrode;
FIG. 3 is a schematic view of the installation of the high temperature and high pressure resistant insulating sleeve, the pressure resistant reinforcing sleeve and the cylindrical electrode;
FIG. 4 is a schematic view showing an assembling process of the upper cover;
fig. 5 is an assembly schematic of the present invention.
Reference numerals
In the attached drawing, 1 is a base, 2 is a lower insulating sealing sleeve, 3 is an upper cover, 4 is an upper insulating sealing sleeve, 5 is a first limiting disc, 6 is an electrode substrate, 7 is a middle insulating sealing sleeve, 8 is a second limiting disc, 9 is a high-temperature and high-pressure resistant insulating sleeve, and 10 is a pressure resistant reinforcing sleeve.
Detailed Description
Referring to fig. 1-5, an electrical property testing device for materials under multiple physical fields comprises a base, an upper cover, a cylindrical electrode, a high temperature and high pressure resistant insulating sleeve and a pressure resistant reinforcing sleeve.
The base is in a convex shape and is a conductor, a lower insulating sealing sleeve is sleeved on the small-diameter section of the base, and sealing is formed between the small-diameter section of the base and the lower insulating sealing sleeve; the upper cover is in an inverted convex shape, the small-diameter section of the upper cover is sleeved with the upper insulating sealing sleeve, a seal is formed between the small-diameter section of the upper cover and the upper insulating sealing sleeve, the end part of the small-diameter section of the upper cover is fixed with the first limiting disc to form axial limiting for the upper insulating sealing sleeve, and the upper cover and the first limiting disc are both conductors.
The cylindrical electrode comprises a convex electrode base body, a small-diameter section of the electrode base body is sleeved with a middle insulating sealing sleeve, a seal is formed between the small-diameter section of the electrode base body and the middle insulating sealing sleeve, a second limiting disc is fixed at the end part of the electrode base body to form axial limiting of the centering insulating sealing sleeve, and the electrode base body and the second limiting disc are both conductors.
The utility model discloses a test material, including base, cylindrical electrode, upper cover, pressure-resistant reinforcement cover, cylindrical electrode, pressure-resistant reinforcement cover, pressure-resistant insulation cover, pressure-resistant reinforcement cover, pressure-resistant insulation cover, pressure-resistant reinforcement cover, pressure-resistant insulation cover, pressure-resistant reinforcement cover, pressure-resistant insulation cover, pressure-resistant section, pressure-resistant insulation cover, pressure-resistant.
The high-temperature and high-pressure resistant insulating sleeve is made of polyvinyl fluoride. The pressure-resistant reinforcing sleeve is made of stainless steel. The small diameter section of the upper cover is in threaded fit with the first limiting disc, and the end part of the electrode base body is in threaded fit with the second limiting disc. The diameter of the large-diameter section of the base is larger than the outer diameter of the lower insulating sealing sleeve.
The method for testing the electrical property of the material under multiple physical fields comprises the steps of placing the testing device in a required physical field, connecting a base and an upper cover with a testing instrument through leads respectively, and testing the electrical property of the material through the testing instrument. The electrical properties include at least one of conductivity, dielectricity, ferroelectricity, piezoelectricity.
The required physical fields include at least two of the following physical fields: pressure, electric field, magnetic field, temperature. The test material is pressed by the upper cover (connecting press) to form different pressure fields. Placing the testing device in a heating table or a heating liquid to form different temperature fields; the testing device is placed in a magnet, an electromagnet or an electromagnetic coil to form different magnetic fields, and the base and the upper cover are connected with a power supply to form a capacitor to apply an electric field to a testing material.
The manufacturing method of the testing device comprises the following steps:
first, according to the steps shown in fig. 1, a hollow lower insulating sealing sleeve (which may be made of inorganic materials such as various organic materials and oxides) is sleeved on a convex conductive cylinder (base). The size of the small cylinder (small diameter section) is the same as that of the hollow part of the left lower insulating sealing sleeve, so that the small cylinder can be sleeved without loosening, and a gap is not left as much as possible.
Next, according to the procedure shown in fig. 4, the upper cover is covered with an upper insulating sealing sleeve having a central hole (rubber plays a sealing role, and functions like rubber used in an injector), and the central hole of the upper insulating sealing sleeve is slightly smaller than a cylinder (small diameter section) due to certain elasticity of the rubber, so that the upper insulating sealing sleeve can be sealed well after being sleeved. When the convex column (upper cover) is sleeved on the column, the size of the small hole in the center of the upper insulating sealing sleeve is required. Then a threaded conductor (a first limiting disc) with a groove on the surface is sleeved on the sleeve and is screwed tightly. This results in the rightmost shape of fig. 2, which is used as a sealable, pressure-resistant, electrically conductive plug (cover).
According to the steps shown in fig. 2, the convex conductor (electrode substrate), the insulating rubber (middle insulating sealing sleeve) and the conductor with the groove thread (second limiting disc) are combined together to obtain the cylindrical electrode with the conductive center and the insulated edge.
Then, according to the steps shown in fig. 5, the rightmost base with center conduction and edge insulation in fig. 1 is assembled with the cylindrical electrode, the high temperature and high pressure resistant insulating sleeve (made of teflon as an example, or other materials, which are required to be insulating, capable of bearing high temperature, pressure resistant, and not prone to corrosion), the stainless steel sleeve (a pressure resistant reinforcing sleeve, which is also made of other materials, and is mainly used for reinforcing teflon so that it can bear higher pressure), and the rightmost sealable, pressure resistant, and conductive plug in fig. 2, so as to obtain the rightmost structure in fig. 5.
The device is filled with liquid or gas or solid to be measured, the cover is covered, the conductive base and the uppermost cover are connected with the conducting wire, and therefore the electrical properties of the material under different pressures, such as conductivity, dielectricity, ferroelectricity, piezoelectricity and the like, can be measured.
The device is placed in a heating table or a heatable liquid, so that the electrical properties of the material can be tested under multiple physical fields (different pressures, electric fields, temperatures).
The device is placed in a magnetic field, so that the electrical property of the material under multiple physical fields (different pressures, electric fields and magnetic fields) can be tested.
The device with the heating device function is placed in an environment capable of generating a magnetic field, so that the electrical property of the material under various physical fields (different pressures, electric fields, magnetic fields and temperatures) can be tested.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, 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 scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an electrical property testing arrangement of material under many physics field which characterized in that:
comprises a base, an upper cover, a cylindrical electrode, a high-temperature and high-pressure resistant insulating sleeve and a pressure resistant reinforcing sleeve,
the base is in a convex shape and is a conductor, a lower insulating sealing sleeve is sleeved on the small-diameter section of the base, and sealing is formed between the small-diameter section of the base and the lower insulating sealing sleeve;
the upper cover is in an inverted convex shape, an upper insulating sealing sleeve is sleeved on the small-diameter section of the upper cover, sealing is formed between the small-diameter section of the upper cover and the upper insulating sealing sleeve, a first limiting disc is fixed at the end part of the small-diameter section of the upper cover to form axial limiting on the upper insulating sealing sleeve, and the upper cover and the first limiting disc are both conductors;
the cylindrical electrode comprises a convex electrode base body, a small-diameter section of the electrode base body is sleeved with a middle insulating sealing sleeve, a seal is formed between the small-diameter section of the electrode base body and the middle insulating sealing sleeve, a second limiting disc is fixed at the end part of the electrode base body to form axial limiting of the centering insulating sealing sleeve, and the electrode base body and the second limiting disc are both conductors;
the utility model discloses a test material's test material, including base, cylindrical electrode, upper cover, pressure-resistant reinforcement cover, pressure-resistant insulation sleeve, pressure-resistant reinforcement cover, pressure-resistant insulation sleeve, pressure-resistant reinforcement cover, pressure-resistant insulation sleeve is sealed.
2. The device for testing the electrical property of the material under multiple physical fields according to claim 1, wherein: the high-temperature and high-pressure resistant insulating sleeve is made of polyvinyl fluoride.
3. The device for testing the electrical property of the material under multiple physical fields according to claim 1, wherein: the pressure-resistant reinforcing sleeve is made of stainless steel.
4. The device for testing the electrical property of the material under multiple physical fields according to claim 1, wherein: the small diameter section of the upper cover is in threaded fit with the first limiting disc, and the end part of the electrode base body is in threaded fit with the second limiting disc.
5. The device for testing the electrical property of the material under multiple physical fields according to claim 1, wherein: the diameter of the large-diameter section of the base is larger than the outer diameter of the lower insulating sealing sleeve.
6. A method for testing the electrical properties of the material under multiple physical fields according to claim 1, wherein: the electrical property testing device of the material under the multi-physical field, which comprises the material under the multi-physical field as claimed in claim 1, wherein the testing device is placed in a required physical field, the base and the upper cover are respectively connected with a testing instrument through leads, and the electrical property of the material is tested through the testing instrument.
7. The method for testing the electrical property of the material under the multiple physical fields according to claim 6, wherein: the electrical properties include at least one of conductivity, dielectricity, ferroelectricity, piezoelectricity.
8. The method for testing the electrical property of the material under the multiple physical fields according to claim 6 or 7, wherein the method comprises the following steps: the required physical fields include at least one of the following physical fields: electric field, pressure, magnetic field, temperature.
9. The method for testing the electrical properties of the material under the multiple physical fields according to claim 8, wherein: the base and the upper cover are respectively connected with a power supply through leads, and the base and the upper cover form a capacitor to apply an electric field to the test material; placing the testing device in a heating table or a heating liquid to form different temperature fields; placing the testing device in a magnet, an electromagnet or an electromagnetic coil to form different magnetic fields; and applying pressure to the test material through the upper cover to form different pressure fields.
10. The method for testing the electrical properties of the material under the multiple physical fields according to claim 8, wherein: the test material is a multiferroic liquid.
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| US20140285221A1 (en) * | 2011-10-21 | 2014-09-25 | Uniwersytet Warszawski | Cell and method for electrical measurements of highly reactive powder and liquid samples |
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| CN108445058A (en) * | 2018-03-07 | 2018-08-24 | 重庆科技学院 | Multiferroic liquid physics characteristic test device |
| CN109856041A (en) * | 2017-11-30 | 2019-06-07 | 株式会社日立制作所 | For evaluating the electrolytic cell of electrochemical corrosion |
| CN209841626U (en) * | 2019-01-01 | 2019-12-24 | 中国人民解放军63653部队 | Concrete permeability measuring and clamping device based on I-shaped sealing rubber sleeve |
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2021
- 2021-12-28 CN CN202111623395.7A patent/CN114264701A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20140285221A1 (en) * | 2011-10-21 | 2014-09-25 | Uniwersytet Warszawski | Cell and method for electrical measurements of highly reactive powder and liquid samples |
| CN105136980A (en) * | 2015-07-24 | 2015-12-09 | 山西大学 | Multiferroic material multi-field coupling test fixture |
| CN105928643A (en) * | 2016-04-26 | 2016-09-07 | 西南科技大学 | Bentonite two-way swelling force measuring instrument |
| CN109856041A (en) * | 2017-11-30 | 2019-06-07 | 株式会社日立制作所 | For evaluating the electrolytic cell of electrochemical corrosion |
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