CN214440563U

CN214440563U - Graphene oxide film coating system

Info

Publication number: CN214440563U
Application number: CN202120201669.2U
Authority: CN
Inventors: 周步存; 卢静; 周仁杰
Original assignee: Changzhou Fuxi Technology Co Ltd
Current assignee: Changzhou Fuxi Technology Co Ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-10-22
Anticipated expiration: 2031-01-25

Abstract

The utility model provides a graphene oxide membrane coating system, including the coating roll, the tensioning is connected with the coating basement on the coating roll, and adjacent being provided with the scraper with the coating roll, the coating roll is in the coating basement and keeps away from one side of coating roll, and forms the coating clearance between the coating side of scraper and coating basement, still includes the silo, and the silo has feed inlet and discharge gate, and the discharge gate corresponds the setting with the coating side of coating basement, and feed inlet department is equipped with extrusion die head, and extrusion die head can extrude the pan feeding inslot with oxidation graphite alkene thick liquids. The utility model discloses utilize extrusion die head's extrusion to extrude material to the silo with oxidation graphite alkene thick liquids in, can obtain the smooth thick liquids of liquid level in the silo, the thick liquids in the silo passes through the coating clearance between the coating side of scraper and coating basement under the pressure effect of self weight, and the coating side of coating basement is scribbled in the flow to form the even oxidation graphite alkene wet film of thickness.

Description

Graphene oxide film coating system

Technical Field

The utility model belongs to the technical field of the graphite alkene membrane coating, concretely relates to graphite alkene oxide membrane coating system.

Background

In the prior art, the following two methods are generally adopted for coating the slurry on the substrate:

one is extrusion coating, which is to spray slurry onto a substrate stretched vertically upwards, wherein an extrusion discharge lip is perpendicular to the coated substrate and is very close to the substrate, and the distance is related to the thickness of the coated wet film and the coating speed, and is about tens to hundreds of micrometers, in this way, if the slurry is sprayed too thick, the slurry on the substrate can flow down, so that the film surface is not uniform, and a wet film with large thickness cannot be obtained, therefore, the thickness of the film coated in this way is generally not more than 1mm, but the thickness of the wet film with 1-4mm is required to be obtained by coating graphene oxide slurry.

Another method is transfer coating, which is to scrape a certain thickness of film from the slurry onto a coating roll through a gap between the coating roll and a doctor blade, the coating roll is continuously rotated, then a backing roll with a coated substrate is leaned against the coating roll, and the film on the coating roll is transferred onto the coated substrate, because the coating roll and the backing roll are arranged parallel to a horizontal plane, if the wet film is too thick, the shape of the film is changed during rotation, and the coating thickness is not uniform.

That is, the graphene oxide film with a large thickness (1-4mm) and a uniform thickness cannot be formed in the extrusion coating and transfer coating modes in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one among the above-mentioned problem, the utility model provides a graphene oxide membrane coating system, including the coating roll, the tensioning is connected with the coating basement on the coating roll, with the adjacent scraper that is provided with of coating roll, the coating roll is in the coating basement is kept away from one side of coating roll, just the scraper with form the coating clearance between the coating side of coating basement, still include the silo, the silo has feed inlet and discharge gate, the discharge gate with the coating side of coating basement corresponds the setting, feed inlet department is equipped with extrusion die head, extrusion die head can extrude the graphene oxide thick liquids and impress in the silo.

Preferably, the graphene oxide film coating system further comprises a drying oven, the drying oven is positioned downstream of the running direction of the coated substrate, a first roller is arranged at the inlet of the drying oven, the coated substrate is tensioned between the coating roller and the first roller, and an included angle a is formed between the roller outlet direction of the coated substrate and the horizontal plane, wherein the included angle a is more than or equal to 8 degrees and less than or equal to 20 degrees.

Preferably, a connecting line between the axis of the scraper and the axis of the coating roller intersects with the roller wall of the coating roller at a point B, a point C is a point C which is a tangent point of the coating substrate to the coating roller, the point B is located at a side of the point C close to the trough, and an arc length between the point B and the point C is 5mm to 10 mm.

Preferably, the graphene oxide film coating system further comprises a position adjusting member for adjusting a relative position of the doctor blade with respect to the coating roller, thereby adjusting the coating gap.

Preferably, the position adjustment part includes the mounting panel, pivotally connected to has the swing arm on the mounting panel, the scraper can drive rotationally connect in on the swing arm, the one end of swing arm is provided with the motor, the other end of swing arm is connected with lift cylinder, lift cylinder reaches the motor is used for the drive the position variation of scraper.

Preferably, the mounting plate is further provided with a limiting piece, and the limiting piece is located on one side, far away from the coating roll, of the swing arm.

Preferably, a film thickness detection part is arranged at the coating substrate between the coating roller and the first roller.

Preferably, the applicator roll is pivotally connected to the mounting plate; and/or the trough is connected to the mounting plate; and/or, the extrusion die head is connected to the mounting plate.

The utility model provides a pair of graphene oxide membrane coating system utilizes extrusion die head's extrusion is loaded up graphene oxide thick liquids to in the silo, can obtain the smooth thick liquids of liquid level in the silo, the thick liquids in the silo pass through under the pressure effect of self weight the scraper with coating clearance between the coating side of coating base, flow and coat in the coating side of coating base to form the even wet membrane of graphene oxide of thickness.

Drawings

Fig. 1 is a schematic partial structural view of a graphene oxide film coating system according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of a position adjustment component of a graphene oxide film coating system according to an embodiment of the present invention.

The reference numerals are represented as:

1. a coating roll; 2. a scraper; 3. a trough; 4. an extrusion die head; 100. coating a substrate; 5. drying the oven; 51. a first roller; 61. mounting a plate; 62. swinging arms; 63. a motor; 64. a lifting cylinder; 65. a limiting member; 7. film thickness detection part.

Detailed Description

With reference to fig. 1 to 3, according to the embodiment of the present invention, a graphene oxide film coating system is provided, including coating roll 1, the tensioning is connected with coating base 100 on coating roll 1, with coating roll 1 is adjacent to be provided with scraper 2, coating roll 1 is in coating base 100 keeps away from one side of coating roll 1, just scraper 2 with form the coating clearance between the coating side of coating base 100, still include silo 3, silo 3 has feed inlet and discharge gate, the discharge gate with the coating side of coating base 100 corresponds the setting, feed inlet department is equipped with extrusion die 4, extrusion die 4 can extrude the graphene oxide thick liquids into in silo 3. In the technical scheme, graphene oxide slurry is extruded and fed into the material groove 3 by the extrusion of the extrusion die head 4, slurry with a flat liquid level can be obtained in the material groove 3, the slurry in the material groove 3 flows and is coated on the coating side of the coating substrate 100 through a coating gap between the scraper 2 and the coating side of the coating substrate 100 (which can also be understood as the scraper 2 and the coating roller 1) under the pressure of the self weight, so that a graphene oxide wet film with uniform thickness is formed, and it can be understood that the extrusion die head 4 extrudes the slurry from a cavity in the extrusion die head to a discharge port of the extrusion die head by using larger pressure, and because the internal pressure is consistent, the outflow amount of the slurry at each position of the discharge port is equal, a flat slurry liquid level can be formed in the material groove 3, and the flat liquid level of the slurry can make the coating pressure caused by the self weight of the slurry consistent, and then guaranteed that rete thickness is even, and further can understand, when the thick liquids liquid level in the silo 3 is uneven, can cause the thick liquids in the silo 3 to transmit the inconsistent pressure to coating department, leads to coating thickness inconsistent, causes inhomogeneous phenomenon's emergence, because graphite oxide thick liquids viscosity is big, conventional material loading mode can't obtain level and smooth liquid level in the silo 3, and this defect among the prior art then can be overcome to extrusion die 4 in this application.

The graphene oxide film coating system further comprises a drying oven 5, wherein the drying oven 5 is located downstream of the running direction of the coated substrate 100 and used for drying the formed graphene oxide wet film, a first roller 51 is arranged at the inlet of the drying oven 5, the coated substrate 100 is tensioned between the coating roller 1 and the first roller 51, an included angle a is formed between the roller outlet direction of the coated substrate 100 and the horizontal plane, and the included angle a is more than or equal to 8 degrees and less than or equal to 20 degrees. Specifically, if a is greater than 20 °, the wet film flows due to certain fluidity, and the film layer is not uniform, and if a is less than 8 °, the wet film has no leveling process, and the film surface has fine texture, and the film layer is not uniform enough.

Preferably, a connecting line between the axis of the scraper 2 and the axis of the coating roller 1 intersects with a roller wall of the coating roller 1 at a point B, a release tangent point of the coating substrate 100 and the coating roller 1 is a point C, the point B is located at a side of the point C close to the trough 3, and an arc length between the point B and the point C is 5mm to 10 mm. If be less than 5mm, other interference such as external vibration can influence thick liquids coating, appear the striae, if be greater than 10mm, thick liquid in silo 3 is difficult to go up to the scraper mouth department of scraper 2, does not form the wet film that thickness is thick.

Further, the graphene oxide film coating system further includes a position adjusting member for adjusting a relative position of the doctor blade 2 with respect to the coating roller 1, thereby adjusting the coating gap. That is, the relative position between the doctor blade 2 and the coating roller 1 can be changed by the operation of the position adjusting component, so as to adjust the formation thickness of the wet film, and further enable the coating system to meet the manufacturing requirements of graphene oxide films with different thicknesses.

As a specific embodiment of the position adjusting component, the position adjusting component includes a mounting plate 61, a swing arm 62 is pivotally connected to the mounting plate 61, the doctor blade 2 is rotatably and drivably connected to the swing arm 62, a motor 63 is disposed at one end of the swing arm 62, a lifting cylinder 64 is connected to the other end of the swing arm 62, the lifting cylinder 64 and the motor 63 are used for driving the position change of the doctor blade 2, and more specifically, the lifting cylinder 64 is used for driving the lifting and dropping of the doctor blade 2, and the motor 63 is used for precisely adjusting the distance between the doctor blade 2 and the coating roller 1.

Preferably, the mounting plate 61 is further provided with a limiting member 65, and the limiting member 65 is located on one side of the swing arm 62 away from the coating roller 1, so as to limit the lifting displacement range of the swing arm 62.

In some embodiments, a film thickness detection component 7 is disposed at the coating substrate 100 between the coating roller 1 and the first roller 51, and the film thickness detection component 7 can be, for example, an X-ray test system, and can move laterally to detect the thickness of the whole coating surface, and can control the operation of the motor 63 according to the detected real-time thickness, so as to adjust the relative position of the doctor blade 2 and the coating roller 1 in real time, and further ensure the uniformity of the thickness of the coating film.

Preferably, the applicator roll 1 is pivotally connected to the mounting plate 61; and/or the trough 3 is connected to the mounting plate 61; and/or the extrusion die head 4 is connected to the mounting plate 61, that is, the coating roller 1, the trough 3, the scraper 2 and the extrusion die head 4 are all mounted on the mounting plate 61, so that the relative position relationship among the components is more stable, and the structure is simpler and more compact.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The graphene oxide film coating system is characterized by comprising a coating roll (1), wherein a coating substrate (100) is connected to the coating roll (1) in a tensioning mode, a scraper (2) is arranged adjacent to the coating roll (1), the coating roll (1) is located on one side, away from the coating roll (1), of the coating substrate (100), a coating gap is formed between the scraper (2) and the coating side of the coating substrate (100), the graphene oxide film coating system further comprises a material groove (3), the material groove (3) is provided with a material inlet and a material outlet, the material outlet corresponds to the coating side of the coating substrate (100), an extrusion die head (4) is arranged at the material inlet, and the extrusion die head (4) can extrude graphene oxide slurry into the material groove (3).

2. The graphene oxide film coating system according to claim 1, further comprising a drying oven (5), wherein the drying oven (5) is located downstream of the running direction of the coated substrate (100), a first roller (51) is arranged at the inlet of the drying oven (5), the coated substrate (100) is tensioned between the coating roller (1) and the first roller (51), and an included angle a is formed between the roller outlet direction of the coated substrate (100) and a horizontal plane, and the included angle a is more than or equal to 8 degrees and less than or equal to 20 degrees.

3. The graphene oxide film coating system according to claim 2, wherein a connecting line between the axis of the doctor blade (2) and the axis of the coating roller (1) intersects with a roller wall of the coating roller (1) at a point B, a point C of a release tangency of the coating substrate (100) and the coating roller (1) is at the point C, the point B is on a side of the point C close to the trough (3), and an arc length between the point B and the point C is 5mm to 10 mm.

4. The graphene oxide film coating system according to claim 2, further comprising a position adjusting member for adjusting a relative position of the blade (2) with respect to the coating roller (1), thereby adjusting the coating gap.

5. The graphene oxide film coating system according to claim 4, wherein the position adjusting component comprises a mounting plate (61), a swing arm (62) is pivotally connected to the mounting plate (61), the scraper (2) is rotatably and drivably connected to the swing arm (62), a motor (63) is disposed at one end of the swing arm (62), a lifting cylinder (64) is connected to the other end of the swing arm (62), and the lifting cylinder (64) and the motor (63) are used for driving the scraper (2) to move.

6. The graphene oxide film coating system according to claim 5, wherein a stopper (65) is further provided on the mounting plate (61), and the stopper (65) is located on a side of the swing arm (62) away from the coating roller (1).

7. The graphene oxide film coating system according to claim 5, wherein a film thickness detection part (7) is provided at the coated substrate (100) between the coating roller (1) and the first passing roller (51).

8. The graphene oxide film coating system according to claim 5, wherein the coating roller (1) is pivotally connected to the mounting plate (61); and/or the trough (3) is connected to the mounting plate (61); and/or the extrusion die head (4) is connected to the mounting plate (61).