Device for inducing ordered arrangement of graphene nanoplatelets and use method thereof

Abstract

The invention relates to a device for inducing ordered arrangement of graphene nanoplatelets and a use method thereof. The device comprises a cavity and a discharge port, the cavity comprises a cavity inlet flange, an arrangement cavity and a cavity outlet flange, and the cavity inlet flange and the cavity outlet flange are located on the two sides of the arrangement cavity; the discharge hole comprises a flat discharge hole body and a discharge hole flange; during use, the cavity outlet flange and the discharge port flange are detachably fixed together; an arrangement inducing opening is formed in the arrangement cavity; the induction arrangement openings are a plurality of separation slurry guide grooves which are alternately arranged up and down or left and right in the arrangement cavity, so that the graphene slurry is divided into a plurality of strands at the front end in the arrangement cavity, and the induction arrangement openings are arranged into a line on the cavity inlet flange and the cavity outlet flange side and are gradually separated in the arrangement cavity. When the graphene slurry is coated, the graphene microchip induction arrangement device enables the sheet layer orientation degree of the graphene microchips passing through the graphene microchip induction arrangement device to be higher, and the comprehensive performance of a finished product is better.

Description

Technical Field

[0001] The present invention relates to an arrangement device and a method for using the same, and in particular to a device and a method for inducing orderly arrangement of graphene microsheets, which can make the sheet orientation degree of graphene microsheets passing through higher and the comprehensive performance of the finished product better. Background Art

[0002] The graphene film is obtained by self-assembly of a large number of graphene microsheets stacked layer by layer. The macroscopic aqueous graphene slurry is scraped to obtain a wet film, and the wet film can be dried to obtain a graphene film. The existing graphene wet film preparation is completed by scraping with a scraper. The wet film obtained by scraping with a scraper often has many bubbles, uneven and inaccurate wet film thickness, irregular wet film edge shape, and chaotic orientation of most of the graphene microsheets in the wet film. A device for inducing orderly arrangement of graphene microsheets allows the graphene slurry to flow in a specified direction, while inducing a large number of graphene microsheets in the graphene slurry to be oriented in a specified direction. In terms of the graphene slurry coating process, batch continuous induction of orderly arrangement of graphene microsheets can improve the comprehensive performance of the final graphene film in terms of mechanics, thermals, etc. At the same time, the device is easy to scale up for industrialization, which is of great significance for improving the mass production level of graphene films.

[0003] Existing technical solution: The graphene slurry stored in the material tank flows through the scraper provided by the equipment and is scraped and coated into a film. Summary of the invention

[0004] In view of the above problems, the main purpose of the present invention is to provide a device and method for inducing orderly arrangement of graphene microsheets, which can make the lamellae of the passing graphene microsheets more oriented and the finished product have better comprehensive performance.

[0005] The present invention solves the above technical problems through the following technical solutions: a device for inducing orderly arrangement of graphene microsheets, the device for inducing orderly arrangement of graphene microsheets comprising: a cavity and a discharge port.

[0006] The cavity includes a cavity inlet flange, an arrangement cavity, and a cavity outlet flange, wherein the cavity inlet flange and the cavity outlet flange are located on both sides of the arrangement cavity; the discharge port includes a flat discharge port body and a discharge port flange; when in use, the cavity outlet flange and the discharge port flange are detachably fixed together.

[0007] An induced arrangement port is provided in the arrangement cavity; the induced arrangement port is a plurality of separation slurry guide grooves alternately arranged up, down or left and right inside the arrangement cavity, so that the graphene slurry is divided into multiple strands at the front end of the arrangement cavity, and the induced arrangement port is arranged in a line at the cavity inlet flange and the cavity outlet normal side, and gradually separated in the arrangement cavity.

[0008] In a specific embodiment of the present invention, the flat discharge port body and the discharge port flange are integrally formed or fixed together by welding.

[0009] In a specific embodiment of the present invention, the inlet flange, the arrangement cavity and the outlet flange are fixed together by welding.

[0010] In a specific embodiment of the present invention, screw holes are provided on both the cavity outlet flange and the discharge port flange, and the cavity outlet flange and the discharge port flange are detachably fixed together by screws.

[0011] In a specific embodiment of the present invention, a long groove is provided inside the discharge port flange, an inlet end trumpet-shaped and an outlet end flat groove-shaped outlet are provided inside the flat discharge port body, and the long groove is communicated with the outlet.

[0012] A method of using the device for inducing the ordered arrangement of graphene microflakes as described above, the method comprising the following steps:

[0013] Step 1: Apply a certain pressure to the graphene slurry, and control the graphene slurry to flow through a plurality of designed-shaped liquid guiding ports in the device under stable pressure and flow rate.

[0014] Step 2: The graphene slurry is divided into multiple strands at the front end of the cavity, and laminar flow is performed inside the multiple flow channels.

[0015] Step 3: The velocity and resistance gradient difference between the center and the wall surface of the flow channel during the laminar flow process induce the graphene sheets in the liquid phase to be oriented and arranged in an orderly manner parallel to the wall surface of the flow channel.

[0016] Step 4: The horizontal width of a single flow channel gradually expands, the vertical height gradually decreases, the shape of the flow channel gradually becomes flat, the induction sorting effect gradually enhances, and they converge and stack at the end of the flow channel, forming a graphene slurry flow with the same shape and the same flow rate as the inlet end but with a more orderly orientation of the graphene sheets inside at the outlet end of the cavity.

[0017] In a specific embodiment of the present invention, multiple cavities are connected in series when the device is in use.

[0018] The positive and progressive effects of the present invention are as follows: The device for inducing the ordered arrangement of graphene microflakes provided by the present invention and its use method have the following advantages compared with common technologies: When the graphene slurry of the present invention is coated, the graphene microflake induction arrangement device enables the graphene microflakes passing through to have a higher degree of sheet orientation, better comprehensive performance of the finished product, more convenient matching with related processes, can be scaled up to production and realize continuous production, lower cost, not easily damaged, and the thickness and size of the finished product are uniform, etc. Description of the Drawings

[0019] Figure 1This is one of the schematic diagrams of the usage state after the combination of the cavity and the discharge port in the present invention.

[0020] Figure 2 This is the second schematic diagram of the usage state after the combination of the cavity and the discharge port in the present invention.

[0021] Figure 3-1 This is the overall structural schematic diagram of the cavity in the present invention.

[0022] Figure 3-2 This is the front view of the cavity in the present invention.

[0023] Figure 3-3 It is Figure 3-2 the E-E cross-sectional view of

[0024] Figure 3-4 It is Figure 3-2 the F-F cross-sectional view of

[0025] Figure 4-1 This is the overall structural schematic diagram of the discharge port in the present invention.

[0026] Figure 4-2 This is the front view of the discharge port in the present invention.

[0027] Figure 4-3 It is Figure 4-2 the E-E cross-sectional view of

[0028] The following are the names corresponding to the reference numerals in the present invention:

[0029] Cavity 100, discharge port 200, cavity inlet flange 103, arranged cavity 102, induced arrangement port 104, cavity outlet flange 101, discharge port body 201, discharge port flange 202. Detailed implementation manners

[0030] The following provides a preferred embodiment of the present invention in conjunction with the attached drawings to elaborate in detail on the technical solution of the present invention.

[0031] Figure 1 This is one of the schematic diagrams of the usage state after the combination of the cavity and the discharge port in the present invention, Figure 2 This is the second schematic diagram of the usage state after the combination of the cavity and the discharge port in the present invention. As shown in the above figures, the present invention provides a device for inducing the orderly arrangement of graphene microflakes, and the device for inducing the orderly arrangement of graphene microflakes includes: a cavity 100 and a discharge port 200.

[0032] Figure 3-1 This is the overall structural schematic diagram of the cavity in the present invention, Figure 3-2 This is the front view of the cavity in the present invention, Figure 3-3 It is Figure 3-2 the E-E cross-sectional view of Figure 3-4 It is Figure 3-2The F-F cross-sectional view, as shown in the above figure, the cavity 100 in the present invention includes a cavity inlet flange 103, an arranged cavity 102, and a cavity outlet flange 101. The cavity inlet flange 103 and the cavity outlet flange 101 are located on both sides of the arranged cavity 102.

[0033] Figure 4-1 It is a schematic diagram of the overall structure of the discharge port in the present invention. Figure 4-2 It is the front view of the discharge port in the present invention. Figure 4-3 is Figure 4-2 The E-E cross-sectional view. As shown in the above figure, the discharge port 200 in the present invention includes a flat discharge port body 201 and a discharge port flange 202; in use, the cavity outlet flange 101 and the discharge port flange 202 are detachably fixed together; an induced arrangement port 104 is provided in the arranged cavity 102; the induced arrangement port 104 is a plurality of liquid guide ports arranged alternately up and down or left and right.

[0034] The cavity outlet flange 101 is a connecting plate for the graphene slurry to enter the next process after arrangement and combination, and the cavity inlet flange 103 is a connecting plate for the graphene slurry to be hermetically matched with the previous process when entering the arranged cavity.

[0035] When the graphene slurry in the arranged cavity 102 flows in this cavity, the graphene sheets in the liquid phase are aligned in orientation.

[0036] The discharge port is connected to the outlet flange of the last section of the induction sorting device, so that the slurry can flow onto the coating substrate while maintaining the sheet orientation to complete the coating work.

[0037] In the specific implementation process of the present invention, the flat discharge port body and the discharge port flange in the present invention are integrally formed or fixed together by welding, and the cavity inlet flange 103, the arranged cavity 102, and the cavity outlet flange 101 are fixed together by welding.

[0038] An induced arrangement port 103 is provided in the arranged cavity 102; the induced arrangement port 103 is a plurality of separated slurry guide grooves arranged alternately up and down or left and right inside the arranged cavity 102. The induced arrangement port 103 is in a straight line on the sides of the cavity inlet flange 103 and the cavity outlet flange 101 and gradually separates inside the arranged cavity 102.

[0039] Screw holes are provided on both the cavity outlet flange 101 and the discharge port flange 202, and the cavity outlet flange 101 and the discharge port flange 202 are detachably fixed together by screws.

[0040] In the embodiments provided by the present invention, in order to obtain a graphene slurry flow with more ordered layer orientation, a long groove 2021 is provided inside the outlet flange 202, and an inlet trumpet-shaped 2011 and an outlet flat groove-shaped 2012 are provided inside the flat outlet body 201, and the long groove is communicated with the outlet.

[0041] In the embodiments provided by the present invention, the cross-sectional shapes of multiple liquid guiding ports are cuboids or other required shapes. During specific application, a certain pressure is applied to the graphene slurry to control it to flow through the cavities (multiple liquid guiding ports) with designed shapes inside the device at a stable pressure and flow rate. The graphene slurry is divided into multiple strands at the front end of the cavity and undergoes laminar flow inside the multiple flow channels. During the laminar flow process, the velocity and resistance gradient differences between the center of the flow channel and the wall surface of the flow channel induce the graphene sheets in the liquid phase to be oriented and arranged in an orderly manner parallel to the wall surface of the flow channel. The horizontal width of a single flow channel gradually expands, the vertical height gradually decreases, the shape of the flow channel gradually becomes flatter, the inducing sorting effect gradually enhances, and they converge and overlap at the end of the flow channel to form a graphene slurry flow with the same shape and the same flow rate as the inlet end but with more ordered graphene sheet orientation inside at the outlet end of the cavity. When the device is in use, multiple cavities can be connected in series to superimpose the effect of inducing the orientation and arrangement of the graphene sheets in each cavity, so as to significantly improve the sorting effect of the graphene sheets inside the slurry at the final outlet.

[0042] Cooperating relationship and working process: The outlet flange, the arranging cavity, and the inlet flange are welded together by welding to ensure no slurry leakage. The slurry enters the arranging cavity through the inlet flange to produce the effect of inducing the sorting of the graphene sheets in the liquid phase and conveys the slurry backward, and finally discharges through the lower device connected to the outlet flange. The outlet flange can be connected to the inlet flange of the next device with the same shape, so that the slurry with a certain sorting effect can be further processed by the subsequent inducing sorting device for inducing the sorting of the graphene sheets. The device can be connected in series in multiple sections to achieve a controllable and obvious improvement in the orderly arrangement of the graphene sheets in the slurry. The slurry that has completed the sheet sorting process flows out from the outlet connected to the outlet flange of the last section of the device and is coated on a coating substrate with a moving speed matching the flow rate of the slurry to complete the coating work of the induced sorting graphene slurry.

[0043] When the graphene slurry of the present invention is coated, the graphene microplate inducing arrangement device makes the orientation and arrangement of the graphene microplates in the passing slurry more orderly. The present invention solves the problems of reduced comprehensive performance of products caused by the chaotic orientation and arrangement of graphene microplates in the conventional coating process and the thickness non-uniformity and edge irregularity caused by the conventional doctor blade coating method.

[0044] When the graphene slurry in the present invention is coated, the graphene microplate induction alignment device enables the graphene microplates passing through it to have a higher degree of layer orientation, better comprehensive performance of the finished product, more convenient matching with related processes, can be scaled up to production and achieve continuity, lower cost, not easily damaged, and the thickness and size of the finished product are uniform, etc.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An apparatus for inducing the ordered arrangement of graphene microflakes, characterized in that: The device for inducing the ordered arrangement of graphene microflakes includes: a cavity and a discharge port; The cavity includes a cavity inlet flange, an arranging cavity, and a cavity outlet flange. The cavity inlet flange and the cavity outlet flange are located on both sides of the arranging cavity; the discharge port includes a flat discharge port body and a discharge port flange; in use, the cavity outlet flange and the discharge port flange are detachably fixed together; An inducing arrangement port is provided in the arranging cavity; the inducing arrangement port is a plurality of separated slurry guiding grooves arranged alternately up and down or left and right inside the arranging cavity, so that the graphene slurry is divided into multiple strands at the front end inside the arranging cavity. The inducing arrangement port is arranged in a straight line on the sides of the cavity inlet flange and the cavity outlet flange and gradually separates inside the arranging cavity.

2. The device for inducing the ordered arrangement of graphene microflakes according to claim 1, wherein: The flat discharge port body and the discharge port flange are integrally formed or fixed together by welding.

3. The device for inducing the ordered arrangement of graphene microflakes according to claim 1, wherein: The inlet flange, the arranging cavity, and the outlet flange are fixed together by welding.

4. The apparatus for inducing the ordered arrangement of graphene microflakes according to claim 1, wherein: Screw holes are provided on both the cavity outlet flange and the discharge port flange, and the cavity outlet flange and the discharge port flange are detachably fixed together by screws.

5. The device for inducing the ordered arrangement of graphene microflakes according to claim 1, characterized in that: A long groove is provided inside the discharge port flange, and an inlet trumpet-shaped and an outlet flat groove-shaped outlet are provided inside the flat discharge port body. The long groove and the outlet are connected.

6. A method of using the device for inducing the ordered arrangement of graphene microflakes according to any one of claims 1-5, characterized in that: The method includes the following steps: Step 1: Apply a certain pressure to the graphene slurry and control the graphene slurry to flow through a plurality of liquid guiding ports with designed shapes inside the device at a stable pressure and flow rate; Step 2: The graphene slurry is divided into multiple strands at the front end of the cavity and performs laminar flow inside the multiple flow channels; Step 3: The velocity and resistance gradient difference between the center and the wall surface of the flow channel during the laminar flow process induce the graphene sheets in the liquid phase to be oriented and arranged in an orderly manner parallel to the wall surface of the flow channel; Step 4: The horizontal width of a single flow channel gradually expands, the vertical height gradually decreases, the shape of the flow channel gradually becomes flatter, the inducing sorting effect gradually enhances, and they converge and overlap at the end of the flow channel, forming a graphene slurry flow with the same shape and the same flow rate as the inlet end but with a more orderly orientation of the graphene sheets inside at the outlet end of the cavity.

7. The method for using the device for orderly arranging induced graphene microflakes according to claim 6, characterized in that: When in use, multiple cavities are connected in series for this device.

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