High-purity graphene powder mass production device

Abstract

The utility model provides a high-purity graphene powder mass production device which comprises a hollow annular pipe body, the annular pipe body comprises a plurality of arc-shaped bent pipes and a plurality of connecting pieces, a flow channel is arranged in each arc-shaped bent pipe, an annular wall space is arranged in the circumferential annular wall of each connecting piece, at least one annular wall flow channel is arranged on the inner side wall of each connecting piece, and the flow channel is communicated with the annular wall space. The annular wall space is communicated with the flow channel through the annular wall flow channel, and at least one arc bent pipe of the annular pipe body is provided with a slot seam. The feeding barrel is arranged above the annular pipe body in a communicating manner; the plurality of fans are correspondingly arranged and connected to the plurality of connecting pieces, each fan is provided with an air outlet pipe, and the air outlet pipes are communicated with the annular wall spaces of the connecting pieces; the carbon dioxide laser irradiators irradiate the annular pipe body; one end of the collecting plate is provided with a particle screen, and the particle screen is designed to correspond to the size and the shape of the flow channel; therefore, excellent production economic benefits can be achieved.

Description

Technical Field

[0001] The utility model relates to a mass production technology of graphene, in particular to a mass production device which utilizes polyimide spraying and circulating carbon dioxide laser irradiation to mass produce high-purity graphene powder. Background Art

[0002] Graphite is a crystalline structure composed of multiple layers of graphene, and graphene is a single-layer graphite structure. Each carbon atom forms a bond with three adjacent carbon atoms in an sp2 crystal structure and extends into a honeycomb hexagonal two-dimensional structure. Currently, graphene has been widely used in semiconductors, touch panels or solar cells, and is expected to be widely used in the development of many industrial fields such as optoelectronics, green energy generation, environmental biomedical sensing, and composite functional materials.

[0003] Conventional graphene manufacturing methods include mechanical exfoliation, epitaxial growth, chemical vapor deposition (CVD), chemical exfoliation, and electrochemical exfoliation. Although some of these conventional graphene manufacturing methods can produce graphene powder, they are still not efficient and large-scale production of fast and ideal graphene powder, and it is not easy to produce high-purity graphene, so they are not ideal mass production methods. Furthermore, the existing technology of using polyimide spray for carbon dioxide laser irradiation has poor high-purity graphene production because the polyimide spray cannot be fully irradiated by the carbon dioxide laser. If the irradiation length of the production line is increased, the equipment and site space will increase another cost problem, which also needs to be improved.

[0004] Therefore, in view of the fact that conventional graphene manufacturing equipment and technology are not ideal, the inventors of the present invention have started to research and develop solutions, hoping to develop a high-purity graphene powder mass production device that is more productive, economical, and can streamline the use of equipment space, so as to promote the development of this industry. After a long period of thinking, the present utility model was created. Utility Model Content

[0005] The purpose of the utility model is to provide a high-purity graphene powder mass production device, which can enable the polyimide spray to be fully irradiated by a carbon dioxide laser under a streamlined equipment / space state, thereby achieving the mass production effect of high-purity graphene, and having a highly effective and economical practical effect.

[0006] Another object of the utility model is to provide a high-purity graphene powder mass production device, which can realize the mass production of high-purity graphene powder with feasibility and practicability through a circulating pipeline design and constantly accelerate the circulation of polyimide spray in the pipeline to achieve sufficient irradiation of the carbon dioxide laser.

[0007] In order to achieve the above-mentioned purpose, the technical means adopted by the utility model are as follows:

[0008] The utility model provides a high-purity graphene powder mass production device, comprising: an annular tube device, comprising a hollow annular tube body, the annular tube body comprising a plurality of curved tubes and a plurality of connecting pieces, the interior of the curved tube having a flow channel, the inner annular surface of the curved tube being coated with a coating film, the connecting piece being connected between two adjacent curved tubes, the inner annular wall of the connecting piece being provided with an annular wall space, the inner side wall of the connecting piece being provided with at least one annular wall flow channel, the annular wall space passing through the annular wall flow channel A channel is connected to the flow channel, and a slot is provided on at least one of the arc bends of the annular tube body; a feed bucket is connected to the top of the annular tube body; a plurality of fans are correspondingly arranged and connected to the plurality of connecting parts, and the fans have an air outlet pipe, and the air outlet pipe is connected to the annular wall space of the connecting part; a plurality of carbon dioxide laser irradiators are directed to the annular tube body; at least one collecting plate, and a particle screen is provided at one end of the collecting plate, and the particle screen is designed to be corresponding to the size and shape of the flow channel.

[0009] In this embodiment, the arc-bent tube is a quartz tube or a quartz glass tube.

[0010] In this embodiment, the coating is a reflective coating (R coating / Anti Reflection Coating), so that the radiation from the plurality of carbon dioxide laser irradiators is reflected multiple times within the ring tube body, so as to increase the irradiation opportunities for the polyimide.

[0011] In this embodiment, the connecting piece is an annular body relative to the longitudinal section of the arc bend pipe, and at least one gap is provided at the connection between the connecting piece and the arc bend pipe on one side, and the gap connects the outside and the inside of the arc bend pipe, and the gap is consistent with the air outlet flow direction of the annular wall flow channel.

[0012] In this embodiment, the feed barrel is used to set liquid, particulate or sheet-like polyimide (PI / Polyimid), and a feed connection is provided at the bottom of the feed barrel. The feed connection is connected to the connected arc elbow, and an ultrasonic sprayer is provided inside the feed connection. The ultrasonic sprayer sprays the polyimide to make it mist-like particles.

[0013] In this embodiment, the plurality of carbon dioxide laser irradiators are disposed on the outer side and the inner side of the ring tube.

[0014] In this embodiment, the particle screen is a screen with micrometer aperture.

[0015] In this embodiment, the wind flow entering the annular wall space enters the annular tube body through the annular wall flow channel and forms a wind flow that circulates in the annular tube body.

[0016] In this embodiment, the gap allows air outside the annular tube to be attracted into the annular tube, thereby accelerating the wind flow in the annular tube and allowing the polyimide mist particles to be better mixed and disturbed.

[0017] The advantages of the utility model are as follows: by virtue of the aforementioned structural design, the polyimide spray can be fully irradiated by the carbon dioxide laser under a streamlined equipment / space state, thereby achieving mass production of high-purity graphene, and having a highly effective and economical practical effect; at the same time, the utility model can accelerate the circulation of the polyimide spray in the pipeline at all times through a circulating pipeline design, thereby achieving sufficient irradiation by the carbon dioxide laser, thereby making the mass production of high-purity graphene powder feasible and practical.

[0018] In order to enable a further understanding and recognition of the technical, method features and effects achieved by the present utility model, preferred embodiment diagrams and detailed descriptions are provided as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the device of the utility model.

[0020] Figure 2 It is a top view schematic diagram of the device of the utility model.

[0021] Figure 3 It is a partial cross-sectional schematic diagram of the device of the utility model.

[0022] Figure 4 It is a schematic diagram of the operation of the device of the utility model.

[0023] Figure 5 for Figure 4 A partial cross-sectional schematic diagram of .

[0024] Explanation of the reference numerals: annular tube device 10; annular tube body 11; arc bend tube 12; flow channel 120; coating 121; connecting piece 13; inner wall 13a; annular wall space 130; gap 131; annular wall flow channel 132; slot seam 14; feeding device 20; feeding barrel 21; feeding connection part 22; wind power device 30; fan 31; air outlet pipe 32; irradiation device 40; carbon dioxide laser irradiator 41; carbon dioxide laser irradiator 42; collecting device 50; collecting plate 51; particle screen 52; polyimide 100. DETAILED DESCRIPTION

[0025] See also Figure 1 , Figure 2 and Figure 3 , is a preferred embodiment of the high-purity graphene powder mass production device of the utility model. These drawings are schematic diagrams for convenient explanation, which only illustrate the basic structure of the utility model in a schematic way, and the displayed composition drawing is not limited to the same shape and size ratio during actual implementation. The shape and size ratio during actual implementation is a selective design.

[0026] As shown in the figure, the utility model provides a high-purity graphene powder mass production device, including: a ring tube device 10, a feeding device 20, a wind device 30, an irradiation device 40 and a collection device 50, which are used for mass production of high-purity graphene powder in combination.

[0027] The annular tube device 10 includes a hollow annular tube body 11, and the annular tube body 11 includes a plurality of curved tubes 12 and a plurality of connecting parts 13; wherein, the curved tube 12 can be a quartz tube or a quartz glass tube, so as to have the characteristics of corrosion resistance, good thermal stability, good light transmission performance, good electrical insulation performance and high temperature resistance. Since the softening point temperature of quartz glass is about 1730°C, it can be used for a long time at 1100°C, and the maximum short-term use temperature can reach 1450°C. The curved tube 12 has a flow channel 120 inside, and a coating 121 is coated around the annular surface of the flow channel 120. The coating 121 is a reflective coating (R coating / Reflection Coating). In other words, the inner annular surface of the curved tube 12 is provided with / coated with the reflective coating 121. The connecting piece 13 is connected between two adjacent arc bent pipes 12, so that the arc bent pipes 12 and the connecting piece 13 are integrally connected to form a hollow annular tube body 11. The connecting piece 13 is an annular body relative to the longitudinal section of the arc bent pipe 12. An annular wall space 130 is provided inside the circumferential wall of the connecting piece 13. The inner side wall 13a of the connecting piece 13 is provided with at least one annular wall flow channel 132. The annular wall flow channel 132 is connected to the arc bent pipe 12. 2, that is, the annular wall space 130 is connected to the flow channel 120 through the annular wall flow channel 132; furthermore, at least one gap 131 is provided at the connection between the connecting piece 13 and one side arc elbow 12, and the gap 131 is connected to the outside and inside of the arc elbow 12 / connecting piece 13, and the air outlet flow direction of the gap 131 and the annular wall flow channel 132 is consistent and consistent with the flow operation direction of the flow channel 120. In addition, a slot 14 is provided on at least one arc elbow 12 of the annular tube body 11.

[0028] The feeding device 20 is arranged above the annular tube body 11. In a suitable embodiment, the feeding device 20 is connected to the top of an arc-bend pipe 12. The feeding device 20 includes a feeding barrel 21. A feeding connection portion 22 with a smaller diameter is arranged below the feeding barrel 21. The feeding connection portion 22 is connected to the arc-bend pipe 12. In a suitable embodiment, an ultrasonic sprayer (not shown) is arranged inside the feeding connection portion 22 to make the liquid polyimide (PI) 100 placed in the feeding barrel 21 flow first. The ultrasonic sprayer is then used to spray the polyimide 100 in the form of tiny particles (i.e., mist particles) into the arc-bend tube 12 / ring tube body 11. The ultrasonic sprayer can utilize the principle of electronic oscillation and use a piezoelectric crystal oscillator (piezoelectric oscillator / oscillator) to generate high-frequency shock waves (ultrasound) to act on the liquid polyimide 100, so as to shake the liquid polyimide 100 into extremely small mist particles. After an appropriate / expected number of polyimide mist particles are generated, the ultrasonic sprayer is turned off. Furthermore, the feed barrel 21 can also be filled with microparticles or flakes of polyimide 100 (PI / Polyimide), which can be fed into the feed barrel 21 by a vibrating feeder (not shown).

[0029] The liquid polyimide 100 is liquefied It is the trade name of polyimide (PI) film material produced by DuPont in the United States. It is available on the market and can be used to obtain polyimide quickly and at low cost.

[0030] The wind device 30 includes a plurality of fans 31, which are correspondingly arranged and connected to the connecting member 13. In this embodiment, a fan 31 is correspondingly connected below each connecting member 13, and the fan 31 has an air outlet duct 32, which is connected to the annular wall space 130 of the connecting member 13, so that the wind flow entering the annular wall space 130 from the fan 31 can enter the arc curved pipe 12 / annular pipe body 11 from the annular wall flow channel 132, and operate the circulation flow of wind. The wind flow operation of the fan 31 and the connecting member 13 can be similar to the operation principle of the existing Dyson fan.

[0031] The irradiation device 40 includes a plurality of carbon dioxide laser irradiators, which include a plurality of carbon dioxide laser irradiators 41, 42 arranged on the outside and inside of the arc bend tube 12 / annular tube body 11. In the present embodiment, a carbon dioxide laser irradiator 41, 42 should be arranged on the outside and inside of each arc bend tube 12, respectively. In other words, the carbon dioxide laser irradiators 41, 42 all irradiate toward the annular tube body 11.

[0032] The collecting device 50 includes a collecting plate 51, and a particle screen 52 is provided at one end / insertion end of the collecting plate 51. The particle screen 52 is a screen with a micron pore size. The particle screen 52 is designed to correspond to the size and shape of the flow channel 120, so that when one end of the collecting plate 51 is inserted into the slot seam 14 of the arc bend pipe 12, the particle screen 52 just corresponds to abut against the flow channel 120 and completely seals the flow channel 120.

[0033] Please also read Figure 4 , Figure 5 When the high-purity graphene powder mass production device of the utility model is in operation, liquid polyimide 100 is placed in the feed barrel 21, and the liquid polyimide 100 is ultrasonically oscillated in the ultrasonic sprayer of the feed connection part 22 to be atomized into mist particles; at the same time, the fan 31 is started to allow external air to enter the annular wall space 130 of the connecting member 13 through the fan 31 and the air outlet pipe 32, and then the wind flow entering the annular wall space 130 enters the arc elbow 12 / annular tube body 11 through the annular wall flow channel 132, thereby forming a wind flow flowing in the annular tube body 11, and the suction force of the wind flow sucks the mist particles of the polyimide 100 into the annular tube body 11 and mixes with the wind flow, and the circulation is continued.

[0034] Furthermore, when wind flow is generated in the annular tube body 11, the air outside the annular tube body 11 will be sucked into the arc bend tube 12 / annular tube body 11 through the gap 131, thereby further accelerating the wind flow in the annular tube body 11 and making the polyimide 100 of the mist particles produce a better mixing and disturbance state.

[0035] Then, the irradiation device 40 / CO2 laser irradiators 41, 42 are activated, so that the mist particles of polyimide 100 passing through each arc elbow 12 are irradiated by the CO2 laser irradiators 41, 42 arranged opposite to each other. At the same time, the reflective coating 121 can make the irradiation of the CO2 laser irradiators 41, 42 (irradiation device 40) reflect multiple times in the ring tube body 11, so as to increase the irradiation amount / irradiation opportunity of the polyimide 100 (PI / Polyimide).

[0036] The atomized polyimide 100 particles are irradiated with a carbon dioxide laser, causing the atomic lattice of the polyimide 100 atomized particles to vibrate, breaking the C=O and NC bonds in the molecules, and rearranging the atoms of the aromatic compounds to form graphene. Since polyimide contains aromatic and imide, the polyimide can eventually form graphene powder.

[0037] The polyimide 100 in the form of mist particles is circulated in the ring tube 11 along with the wind flow, so the polyimide 100 in the form of mist particles can be sufficiently irradiated by the irradiation device 40 / CO2 laser irradiators 41, 42. The stronger the intensity of the CO2 laser irradiation of the CO2 laser irradiators 41, 42, or the longer the oscillation and irradiation time, the more graphene powder is produced. This is because the more energy the laser irradiation provides, the more energy is provided to react into a single layer of graphene, and thus the more single layer of graphene powder is produced.

[0038] When the mist-like polyimide 100 is fully irradiated by the carbon dioxide laser in the ring tube body 11 along with the airflow circulation and a large amount of high-quality single-layer graphene powder is obtained, the particle screen 52 of the collecting plate 51 can be inserted into the slot 14 of the arc-bend tube 12 to collect the single-layer graphene powder, and the graphene powder taken out from the particle screen 52 can be used for industrial applications.

[0039] The high-purity graphene powder mass production device of the utility model can achieve the mass production of high-purity graphene by means of the above-mentioned structural design, while simplifying the equipment / space, so that the polyimide spray can be fully irradiated by the carbon dioxide laser, and the mass production of high-purity graphene can be achieved, thereby achieving a highly effective and economical practical effect; at the same time, the utility model can accelerate the circulation of the polyimide spray in the pipeline at all times through the circulating pipeline design, so as to achieve the full irradiation of the carbon dioxide laser, thereby making the mass production of high-purity graphene powder feasible and practical.

[0040] In summary, the present invention is indeed a very excellent invention, and the above-described contents are only preferred embodiments of the present invention. For example, all changes based on the technical means and methods of the present invention should fall within the scope of the patent application of the present invention.

Claims

1. A high-purity graphene powder mass production device, characterized in that: Included are: A ring tube device includes a hollow ring tube body, the ring tube body includes a plurality of curved tubes and a plurality of connecting pieces, the curved tube has a flow channel inside, the inner annular surface of the curved tube is coated with a coating film, the connecting piece is connected between two adjacent curved tubes, a ring wall space is provided inside the peripheral annular wall of the connecting piece, at least one ring wall flow channel is provided on the inner side wall of the connecting piece, the ring wall space is connected to the flow channel through the ring wall flow channel, and a slot is provided on at least one of the curved tubes of the ring tube body; A feed barrel, connected to the upper part of the annular tube body; A plurality of fans are correspondingly arranged and connected to the plurality of connecting members, and the fans have an air outlet pipe, and the air outlet pipe is connected to the annular wall space of the connecting member; Several carbon dioxide laser irradiators are directed toward the ring tube body; At least one collecting plate, one end of which is provided with a particle screen, the size and shape of which correspond to the size and shape of the flow channel.

2. The high-purity graphene powder mass production device according to claim 1, characterized in that: The arc bent tube is a quartz tube or a quartz glass tube.

3. The high-purity graphene powder mass production device according to claim 2, characterized in that: The coating is a reflective coating.

4. The high-purity graphene powder mass production device according to claim 2, characterized in that: The connecting piece is an annular body relative to the longitudinal section of the arc bend pipe. At least one gap is provided at the connection between the connecting piece and the arc bend pipe on one side. The gap connects the outside and the inside of the arc bend pipe, and the gap is consistent with the air outlet flow direction of the annular wall flow channel.

5. The high-purity graphene powder mass production device according to claim 4, characterized in that: The feed barrel is used to set liquid, particle or sheet polyimide. A feed connection is arranged below the feed barrel. The feed connection is connected to the arc elbow. An ultrasonic sprayer is arranged inside the feed connection. The ultrasonic sprayer sprays the polyimide to make it mist-like particles.

6. The high-purity graphene powder mass production device according to claim 2, characterized in that: The plurality of carbon dioxide laser irradiators are arranged on the outer side and the inner side of the ring tube body.

7. The high-purity graphene powder mass production device according to claim 1, characterized in that: The particle screen is a screen with micron pore size.

8. The high-purity graphene powder mass production device according to claim 1, characterized in that: The wind flow entering the annular wall space enters the annular tube body through the annular wall flow channel and forms a wind flow operating in a circulatory manner in the annular tube body.

9. The high-purity graphene powder mass production device according to claim 5, characterized in that: The gap allows air outside the annular tube to be drawn into the annular tube.

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