CN221056557U - A device for detecting thermal and electrical conductivity of nanographene materials - Google Patents

Abstract

The utility model discloses a device for detecting the thermal and electrical conductivity of nanographene materials, comprising: a chassis. A retaining ring, which is arranged on the chassis and detachably connected to the chassis. A conductive detection component, which is fixedly arranged on the chassis and located at the periphery of the retaining ring, has a working portion extending into the interior of the retaining ring and in contact with the nanographene material. A thermal conductive detection component, which is arranged on the circumferential wall of the retaining ring and electrically connected to the conductive detection component. Its working portion is located inside the retaining ring and in contact with the nanographene material. The chassis and the retaining ring form a detection cavity for placing the nanographene material, and the conductive property of the nanographene material is detected by emitting light after the conductive detection component is working, and the thermal conductive property of the nanographene material is detected by the working of the thermal conductive detection component. The conductive property detection and the thermal conductive property detection can be performed successively on one chassis, thereby simplifying the detection process, saving test materials, and having the characteristic of slow heat dissipation, thereby preventing heat loss from affecting the detection results.

Description

A device for detecting thermal and electrical conductivity of nanographene materials

Technical Field

The utility model relates to the technical field of nanographene performance detection, in particular to a device for detecting the thermal and electrical conductivity of nanographene materials.

Background technique

Nanomaterials are small particulate materials with a diameter generally between 1 and 100 nm, and nanographene materials are usually powdered graphene within this length range.

Graphene is a new material with carbon atoms connected by sp2 hybridization tightly stacked into a single-layer two-dimensional honeycomb lattice structure. It has many performance advantages such as large specific surface area, lightness, high light transmittance, stability, biocompatibility, flexibility, thermal conductivity and electrical conductivity. The thermal conductivity and electrical conductivity are reflected in the electron mobility of 2×105cm2/V·s, which is the best conductive material at room temperature; it has high temperature stability and electrical conductivity of 108Ω/m, which is lower than copper or silver. The thermal conductivity of graphene is determined by photon conduction at high temperature and ballistic transmission at low temperature. Its thermal conductivity is 5000W·m-1·K-1 at room temperature, which is more than ten times that of copper at room temperature. Graphene is also an excellent thermal conductive material. In the laboratory, if you want to test the thermal and electrical conductivity of nanographene materials, you need to use thermal conductivity testing equipment and electrical conductivity testing equipment to test the performance. That is, if you complete the thermal conductivity test first, you need to collect the nanographene from the thermal conductivity testing equipment and then put it on the electrical conductivity testing equipment for testing. Since nanographene materials are usually in powder form, it is easy to cause incomplete collection and powder spillage when collecting from the thermal conductivity testing equipment to the electrical conductivity testing equipment. Or you can get two nanographenes and place them on the thermal conductivity testing equipment and the electrical conductivity testing equipment at the same time, which will lead to waste of test materials.

Therefore, the use of different testing equipment makes the testing process of the thermal and electrical conductivity of nanographene cumbersome or wastes test materials.

Utility Model Content

In order to solve the problem that the above-mentioned application of different detection equipment leads to troublesome detection process of thermal and electrical conductivity of nanographene or waste of test materials, the utility model provides a device for detecting thermal and electrical conductivity of nanographene materials, which detects the electrical and thermal conductivity of nanographene materials through a chassis, a retaining ring, a conductive detection component and a thermal conductive detection component.

In order to achieve the above object, the utility model is implemented through the following technical solutions:

A device for detecting thermal and electrical conductivity of nanographene materials, comprising:

Chassis.

The retaining ring is arranged on the chassis and is detachably connected to the chassis and is used for placing the nanographene material.

The conductive detection component is fixed on the chassis and is located at the periphery of the retaining ring. Its working part extends into the interior of the retaining ring and contacts with the nanographene material, and is used to supply power to the nanographene.

The heat conduction detection component is arranged on the circumferential wall of the retaining ring and is electrically connected to the conduction detection component. Its working part is located inside the retaining ring and contacts with the nanographene material to heat the nanographene material.

Compared with the prior art, the utility model has the following advantages:

The chassis and the retaining ring form a detection cavity for placing the nanographene material. The conductive property of the nanographene material is detected by emitting light after the conductive detection component is working, and the thermal conductivity of the nanographene material is detected by the thermal conductivity detection component working. The conductive property test and the thermal conductivity test can be carried out successively on one chassis, which simplifies the detection process and saves test materials. It also has the characteristic of slow heat dissipation to prevent heat loss from affecting the detection results.

Further preferably, the conductive detection component comprises:

Power supply, disassembled and connected on the chassis.

The positive connector is arranged on the retaining ring, one end of which passes through the retaining ring to contact the nanographene, and the other end is electrically connected to the positive pole of the power supply.

The negative connector is arranged on a retaining ring corresponding to the position of the connector, and one end of the negative connector extends into the retaining ring to contact the nanographene material.

The detection lamp is fixed on the chassis and located outside the retaining ring. One end of the detection lamp is electrically connected to the other end of the negative connector, and the other end is electrically connected to the negative pole of the power supply through a wire.

By adopting the above technical scheme, the conductive detection component consisting of a power supply, a positive connector, a negative connector and a detection lamp, a retaining ring and the nanographene material in the retaining ring are connected. It only needs to turn on the power to form a circuit. The conductivity of the circuit can be determined by whether the detection lamp is lit, so as to detect the conductive properties of the nanographene material. The detection process is simple and easy to operate.

Further preferably, the thermal conductivity detection component comprises:

The heater is plugged into the retaining ring, the electrical end of the heater is connected to the power source, and the working end extends into the interior of the retaining ring and contacts with the nanographene material.

The temperature probe passes through the retaining ring, one end of which is located inside the retaining ring and contacts the nanographene material, and the other end of which is located outside the retaining ring.

By adopting the above technical solution, when it is necessary to detect the thermal conductivity of the nanographene material, there is no need to take out the nanographene material. It is only necessary to turn on the heater, supply power to the heater from the power supply, and heat the nanographene material. The temperature of different nanographene materials is detected by the temperature probe to judge their thermal conductivity. The detection process is simple and easy to operate.

More preferably, the retaining ring comprises:

The first half circle is fixed on the chassis and is respectively plugged with the positive connector, the negative connector, the heater and the temperature probe to limit and support the positive connector, the negative connector, the heater and the temperature probe.

The second half circle is arranged on the chassis, and its bottom surface contacts the surface of the chassis. The side wall is detachably connected to the first half circle, and forms a cavity for placing nanographene material with the first half circle and the chassis.

By adopting the above technical scheme, the first semicircle and the conductive detection component form a device for detecting the conductive properties of the nanographene material, and the first semicircle, the second semicircle and the thermal conductivity detection component together form a device for detecting the thermal conductivity, thereby achieving the detection of both conductive properties and thermal conductivity through the retaining ring, which is simple and convenient.

Further optimization is that both the first half circle and the second half circle are provided with detachable parts, which are respectively fixed on the outer wall of the first half circle and the outer wall of the second half circle, and are used to assist external force to disassemble or connect the first half circle and the second half circle.

By adopting the above technical solution, when the nanographene material needs to be taken out after all the tests are completed, the second half circle can be separated from the first half circle by manually pulling the disassembly piece, and the nanographene material can be completely cleaned out and collected, thereby saving materials and avoiding waste.

Further optimization is that the materials of the first half circle and the second half circle are both glass.

By adopting the above technical solution, glass is an insulator at room temperature, and can play the role of external insulation when conducting electrical conductivity testing, thereby avoiding electric shock to the hands during testing.

Further optimization is that the first half circle and the second half circle are both in an internal vacuum state.

By adopting the above technical solution, during the thermal conductivity test, the vacuum-like first half circle and the second half circle can play the role of external insulation. Only the temperature probe is needed to detect the temperature of the nanographene material to prevent heat from diffusing to the outside of the first half circle and the second half circle and affecting the test accuracy.

Further optimization is that a DC power supply is selected as the power supply.

By adopting the above technical solution, the DC power supply is convenient for thermal and electrical conductivity detection of nanographene materials, is easy to carry, can be used in a working environment without power supply, and has a wide range of applicable environments.

Further optimization is that rubber is selected as the material of the chassis.

By adopting the above technical solution, when testing the conductive properties of nanographene materials, the rubber chassis can play a good insulating role and prevent people from electric shock.

Further optimization is that the number of the temperature probes is at least 5, and at least 5 temperature probes are evenly arranged on the retaining ring.

By adopting the above technical solution, when the probe temperature is 5, it is distributed together with the heater on the circumference of the retaining ring to detect the temperature of the nanographene material at different positions in the retaining ring, and judge the temperature of the nanographene material from 6 different position areas. Similarly, the temperature is detected from at least 6 different positions of the retaining ring to judge the thermal conductivity of the nanographene material.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of this embodiment.

FIG. 2 is a schematic diagram of the structure of the conductive detection component in this embodiment.

FIG. 3 is a schematic diagram of the structure of the heat conduction component in this embodiment.

Figure markings: 1-chassis; 2-retaining ring; 21-first half circle; 22-second half circle; 23-detachable part; 3-conductive detection component; 31-power supply; 32-positive connector; 33-negative connector; 34-detection lamp; 4-thermal conductivity detection component; 41-heater; 42-temperature probe; 5-top cover.

Detailed ways

If you want to test the thermal and electrical conductivity of nanographene materials, you need to use thermal conductivity testing equipment and electrical conductivity testing equipment to test the performance. That is, if you complete the thermal conductivity test first, you need to collect the nanographene from the thermal conductivity testing equipment and then put it on the electrical conductivity testing equipment for testing. Since nanographene materials are usually in powder form, it is easy to cause incomplete collection and powder spillage when collecting from the thermal conductivity testing equipment to the electrical conductivity testing equipment. Or you can get two nanographenes and place them on the thermal conductivity testing equipment and the electrical conductivity testing equipment at the same time, resulting in a waste of test materials.

Therefore, the use of different testing equipment makes the testing process of the thermal and electrical conductivity of nanographene cumbersome or wastes test materials.

Based on the above technical problems, the present application has made the following designs and ideas: designing a set of testing equipment that can perform both electrical conductivity and thermal conductivity tests on nanographene materials, and even perform electrical and thermal conductivity tests at the same time, to avoid the trouble, waste of time and waste of materials caused by taking out the nanographene material after the previous test is completed and then performing the next test.

In view of the above design and concept, the present application further introduces the present invention in detail below in conjunction with Figures 1, 2 and 3.

A device for detecting thermal and electrical conductivity of nanographene materials, as shown in FIG1 , comprises:

Chassis 1.

The retaining ring 2 is arranged on the chassis 1 and is detachably connected to the chassis 1 and is used for placing the nanographene material.

The conductive detection component 3 is fixed on the chassis 1 and is located outside the retaining ring 2. Its working part extends into the retaining ring 2 and contacts with the nano-graphene material, so as to supply power to the nano-graphene.

The thermal conductivity detection component 4 is arranged on the circumferential wall of the retaining ring 2 and is electrically connected to the conductive detection component 3. Its working part is located inside the retaining ring 2 and contacts with the nanographene material for heating the nanographene material.

The chassis 1 and the retaining ring 2 form a detection cavity for placing the nanographene material. The conductivity of the nanographene material is detected by the light emitted by the conductive detection component 3 after operation, and the thermal conductivity of the nanographene material is detected by the operation of the thermal conductivity detection component 4. The conductive performance test and the thermal conductivity test can be performed successively on a chassis 1, which simplifies the detection process and saves test materials. It also has the characteristics of slow heat dissipation and high detection accuracy, preventing heat loss from affecting the detection results. The detection device can also detect the conductive and thermal conductivity of nano-scale materials such as nano-alloys and nano-particles, and has the characteristics of strong practicality and wide application range.

Specifically, as shown in FIG. 1 and FIG. 2 , the conductive detection component 3 in this embodiment includes:

The power supply 31 is detachably connected to the chassis 1 .

The positive connector 32 is disposed on the retaining ring 2 , one end of which passes through the retaining ring 2 to contact the nanographene, and the other end of which is electrically connected to the positive pole of the power source 31 .

The negative connector 33 is arranged on the retaining ring 2 corresponding to the position of the connector, and one end thereof extends into the retaining ring 2 to contact with the nano-graphene material.

The detection lamp 34 is fixed on the chassis 1 outside the retaining ring 2, one end of which is electrically connected to the other end of the negative connector 33, and the other end of which is electrically connected to the negative pole of the power supply 31 through a wire.

The conductive detection component 3 composed of a power supply 31, a positive connector 32, a negative connector 33 and a detection lamp 34, the retaining ring 2 and the nanographene material in the retaining ring 2 are connected. It only needs to turn on the power supply 31 to form a circuit. The conductive property of the nanographene material can be detected by judging whether the detection lamp 34 emits light. The detection process is simple and easy to operate.

Specifically, as shown in FIG. 1 and FIG. 2 , the thermal conductivity detection component 4 in this embodiment includes:

The heater 41 is plugged into the retaining ring 2, with its electrical end connected to the power source 31, and its working end extending into the interior of the retaining ring 2 and contacting the nanographene material.

The temperature probe 42 passes through the retaining ring 2 , one end of which is located inside the retaining ring 2 and in contact with the nanographene material, and the other end of which is located outside the retaining ring 2 .

When the thermal conductivity of the nanographene material needs to be tested, there is no need to take out the nanographene material. It is only necessary to turn on the heater 41, and the power supply 31 supplies power to the heater 41, so that the heater 41 heats the nanographene material. The temperature of different nanographene materials is detected by the temperature probe 42 to judge their thermal conductivity. The detection process is simple and easy to operate.

Specifically, as shown in FIG. 1 and FIG. 3 , the retaining ring 2 in this embodiment includes:

The first half circle 21 is fixed on the chassis 1 and is respectively plugged with the positive connector 32 , the negative connector 33 , the heater 41 and the temperature probe 42 to limit and support the positive connector 32 , the negative connector 33 , the heater 41 and the temperature probe 42 .

The second half circle 22 is arranged on the chassis 1, and its bottom surface contacts the surface of the chassis 1. The side wall is detachably connected to the first half circle 21, and forms a cavity for placing nanographene material with the first half circle 21 and the chassis 1.

The first semicircle and the conductive detection component 3 form a device for detecting the conductive properties of the nanographene material, and the first semicircle 21, the second semicircle 22 and the thermal conductivity detection component 4 together form a device for detecting the thermal conductivity, thereby achieving the detection of both conductive properties and thermal conductivity through the retaining ring 2, which is simple and convenient.

Specifically, as shown in Fig. 3, in this embodiment, both the first half circle 21 and the second half circle 22 are provided with a disassembly member 23, which is respectively fixed on the outer wall of the first half circle 21 and the outer wall of the second half circle 22, and is used to assist external force to disassemble or connect the first half circle 21 and the second half circle 22. There are two disassembly members 23, one of which is fixed on the first half circle 21, and the other is fixed on the second half circle 22, so that the second half circle 22 can be disassembled by hand.

When the nano-graphene material needs to be taken out after all the tests are completed, the second half circle 22 is separated from the first half circle 21 by manually pulling the disassembly member 23, and the nano-graphene material can be completely cleaned out and collected, thereby saving materials and avoiding waste.

Specifically, in the present embodiment, the first half circle 21 and the second half circle 22 are both made of glass. Glass is an insulator at room temperature and can act as external insulation when conducting conductive performance testing, thereby avoiding electric shock to the hands during testing, which is safe and reliable.

Specifically, the first half circle 21 and the second half circle 22 in the present embodiment are both in a vacuum state inside. During the thermal conductivity test, the vacuum first half circle 21 and the second half circle 22 can play a role in external insulation. Only the temperature probe 42 is needed to detect the temperature of the nanographene material to prevent heat from diffusing to the outside of the first half circle 21 and the second half circle 22 and affecting the test accuracy.

Specifically, the power supply 31 in this embodiment is a DC power supply 31. The DC power supply 31 is convenient for thermal and electrical conductivity detection of nanographene materials, is easy to carry, can be used in a working environment without a power supply 31, and has a wide range of applicable environments.

Specifically, the material of the chassis 1 in this embodiment is rubber. When testing the conductive properties of the nanographene material, the chassis 1 made of rubber can play a good insulating role to prevent people from electric shock.

Specifically, as shown in Figure 3, the number of temperature probes 42 in this embodiment is at least 5, and at least 5 temperature probes 42 are evenly arranged on the retaining ring 2. When the probe temperature is 5, they are distributed together with the heater 41 on the circumference of the retaining ring 2 to detect the temperature of the nanographene material at different positions in the retaining ring 2, and judge the temperature of the nanographene material from 6 different position areas. Similarly, the temperature is detected from at least 6 different positions of the retaining ring 2 to judge the thermal conductivity of the nanographene material.

Specifically, a top cover 5 is also provided on the retaining ring 2 in this embodiment, and the top cover 5 is buckled in the retaining ring 2. When performing thermal conductivity testing, the top cover 5 is used to cover the retaining ring 2 to prevent heat in the nanographene material from dissipating outside the retaining ring 2, thereby ensuring that the temperature probe 42 accurately detects the temperature and improves the accuracy of the conductivity testing.

Please combine Figures 1, 2 and 3 to describe the principle of the present invention in detail through the following electrical conductivity test and thermal conductivity test, as follows:

Conductivity testing

The nanographene material is evenly laid in the retaining ring 2, and is in contact with the positive connector 32, the negative connector 33, the temperature probe 42 and the heater 41, and the heater 41 is turned off. The power supply 31 is pressed, and the circuit consisting of the positive connector 32, the negative connector 33, the nanographene and the detection light 34 is connected. At this time, the detection light 34 is lit, indicating that the circuit is a closed circuit and is turned on, so as to judge that the nanographene material has conductive properties. The detection process can be realized by simply turning on the power supply 31, which is simple and easy to operate.

Thermal conductivity testing

The original nanographene material is retained inside the retaining ring 2, the power supply 31 is pressed to disconnect the circuit, and the top cover 5 is buckled into the retaining ring 2. The electric heater 41 is turned on, and the power supply 31 and the electric heater 41 are powered. The electric heater 41 heats the nanographene material through the working end on the first half circle 21, and the temperature probes 42 on both sides of the electric heater 41 and on the second half circle 22 respectively measure the changing temperature, so as to judge that the nanographene material not only has thermal conductivity, but also has good thermal conductivity that is uniformly diffused to the periphery, thereby realizing a comprehensive detection of the thermal conductivity of the nanomaterial. The top cover 5 prevents the heat in the nanographene material from being lost, and enables the temperature probe 42 to detect accurate and changing temperatures, thereby improving the detection accuracy.

In another specific embodiment, the power supply 31 can be turned on at the same time to perform the electrical conductivity test and the thermal conductivity test at the same time, which is simple, convenient, reliable and has high detection accuracy.

After the detection is completed, the retaining ring 2 can be opened by moving the disassembly member 23 by elbow according to actual needs, the second retaining ring 2 can be removed, and the nano-graphene material can be poured out or cleaned out to reduce waste.

This specific embodiment is merely an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make non-creative modifications to the embodiment as needed, but as long as it is within the protection scope of the utility model, it is protected by the patent law.

Claims (10)

1. A device for detecting thermal and electrical conductivity of nanographene materials, comprising: Chassis (1); A retaining ring (2), arranged on the chassis (1), detachably connected to the chassis (1), and used for placing nanographene material; A conductive detection component (3) is fixedly mounted on the chassis (1) and is located outside the retaining ring (2). Its working portion extends into the interior of the retaining ring (2) and contacts the nanographene material, and is used to supply power to the nanographene. A thermal conductivity detection component (4) is arranged on the circumferential wall of the retaining ring (2) and is electrically connected to the conductive detection component (3); its working part is located inside the retaining ring (2) and is in contact with the nanographene material, and is used to heat the nanographene material. 2. The device for detecting thermal and electrical conductivity of nanographene materials according to claim 1, characterized in that the electrical conductivity detection component (3) comprises: A power source (31), detachably connected to the chassis (1); A positive connector (32) is arranged on the retaining ring (2), one end of which passes through the retaining ring (2) to contact the nanographene, and the other end of which is electrically connected to the positive pole of the power source (31); A negative connector (33) is arranged on a retaining ring (2) corresponding to the position of the connector, and one end of the negative connector extends into the retaining ring (2) to contact the nanographene material; A detection lamp (34) is fixed on the chassis (1) and is located outside the retaining ring (2), one end of which is electrically connected to the other end of the negative connector (33), and the other end of which is electrically connected to the negative electrode of the power source (31) via a wire. 3. The device for detecting thermal and electrical conductivity of nanographene materials according to claim 2, characterized in that the thermal conductivity detection component (4) comprises: A heater (41) is plugged into the retaining ring (2), an electrical end of which is connected to the power source (31), and a working end of which extends into the interior of the retaining ring (2) and contacts the nanographene material; The temperature probe (42) passes through the retaining ring (2), one end of which is located inside the retaining ring (2) and in contact with the nanographene material, and the other end of which is located outside the retaining ring (2). 4. The device for detecting thermal and electrical conductivity of nanographene materials according to claim 3, characterized in that the retaining ring (2) comprises: The first half circle (21) is fixed on the chassis (1) and is respectively plugged with the positive connector (32), the negative connector (33), the heater (41) and the temperature probe (42), so as to limit and support the positive connector (32), the negative connector (33), the heater (41) and the temperature probe (42); The second half circle (22) is arranged on the chassis (1), with its bottom surface in contact with the surface of the chassis (1), and its side wall is detachably connected to the first half circle (21), forming a cavity for placing the nanographene material together with the first half circle (21) and the chassis (1). 5. The nanographene material thermal and electrical conductivity detection device according to claim 4 is characterized in that a detachable component (23) is provided on each of the first half circle (21) and the second half circle (22), and the detachable component (23) is respectively fixed on the outer wall of the first half circle (21) and the outer wall of the second half circle (22), and is used to assist external force to disassemble or connect the first half circle (21) and the second half circle (22). 6. The device for detecting the thermal and electrical conductivity of nanographene materials according to claim 4, characterized in that the material of the first half circle (21) and the second half circle (22) are both glass. 7. The device for detecting the thermal and electrical conductivity of nanographene materials according to claim 4, characterized in that the first half circle (21) and the second half circle (22) are both in an internal vacuum state. 8. The device for detecting the thermal and electrical conductivity of nanographene materials according to claim 2, characterized in that the power supply (31) is a direct current power supply (31). 9. The device for detecting the thermal and electrical conductivity of nanographene materials according to claim 1, characterized in that the material of the chassis (1) is rubber. 10. The device for detecting thermal and electrical conductivity of nanographene materials according to claim 3, characterized in that the number of the temperature probes (42) is at least 5, and at least 5 temperature probes (42) are evenly arranged on the retaining ring (2).