CN113371697A - Graphite boat and crucible for graphitization furnace and preparation method of graphene heat-conducting film - Google Patents
Graphite boat and crucible for graphitization furnace and preparation method of graphene heat-conducting film Download PDFInfo
- Publication number
- CN113371697A CN113371697A CN202110828806.XA CN202110828806A CN113371697A CN 113371697 A CN113371697 A CN 113371697A CN 202110828806 A CN202110828806 A CN 202110828806A CN 113371697 A CN113371697 A CN 113371697A
- Authority
- CN
- China
- Prior art keywords
- graphite
- boat
- crucible
- graphene foam
- graphene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/184—Preparation
Abstract
The invention provides a graphite boat for a graphitization furnace, which comprises an upper boat cover plate, a bottom boat plate and a plurality of graphite rods, wherein one ends of the graphite rods are connected with the upper boat cover plate in a sliding manner, the other ends of the graphite rods are fixedly connected with the bottom boat cover plate, and a plurality of graphite papers and a plurality of groups of graphene foam films are stacked between the bottom boat cover plate and the upper boat cover plate at intervals by adopting one layer of graphite paper and one group of graphene foam films. The invention also provides a crucible and a preparation method of the graphene heat-conducting film. The invention has simple structure and convenient assembly and disassembly, and can be used for large-scale production.
Description
Technical Field
The invention belongs to the technical field of crucible boat manufacturing, and particularly relates to a graphite boat for a graphitization furnace, a crucible and a preparation method of a graphene heat-conducting film.
Background
Due to the special two-dimensional crystal structure, the graphene has the characteristics of good mechanical strength, high electron mobility, high specific surface area and the like, and also has high theoretical thermal conductivity which reaches 5300W/m.K, is a material with the highest known thermal conductivity and is far higher than the thermal conductivity of other carbon materials such as graphite, carbon nanotubes and the like, so that the graphene has a huge application prospect in the field of thermal management.
At present, the reduced graphene oxide film is one of the main technical routes for preparing the graphene thermal conductive film in recent years. In the thermal treatment reduction process of preparing the graphene heat-conducting film by using the method for reducing the graphene oxide film, a graphitization furnace is required to be used for repairing the defects of the graphene. Under the condition that the size of the graphite crucible is fixed, the yield of the graphene heat-conducting film is high as much as possible, and the cost is low, so that the novel graphite boat needs to be invented to solve the problems.
Disclosure of Invention
The invention provides a graphite boat for a graphitization furnace, aiming at one or more problems in the prior art, and the graphite boat comprises an upper boat cover plate, a boat bottom plate and a plurality of graphite rods, wherein one end of each graphite rod is connected with the upper boat cover plate in a sliding manner, the other end of each graphite rod is fixedly connected with the boat bottom plate, and a plurality of graphite papers and a plurality of groups of graphene foam films are stacked between the boat bottom plate and the upper boat cover plate at intervals by adopting one layer of graphite paper and one group of graphene foam films.
Optionally, the graphite boat further comprises a plurality of graphite buttons for tightening the graphite rod to connect with the other end of the bottom plate of the boat; preferably, the graphite button is in threaded connection with the graphite rod.
Optionally, a plurality of first through holes are arranged on the upper cover plate of the boat, and the first through holes are used for penetrating the graphite rods.
Optionally, a second through hole is formed in the upper cover plate of the boat, the second through hole corresponds to the graphene foam film in size, and the graphene foam film is placed through the second through hole.
Optionally, the graphite boat further comprises at least one partition plate, wherein a first through hole through which the graphite rod passes is formed in the partition plate, and the partition plate is arranged between the upper boat cover plate and the bottom boat plate and used for enhancing the stability of the graphite boat in the graphitization process of the graphene foam film.
Optionally, a second through hole is formed in the partition board, the second through hole corresponds to the graphene foam film in size, and the graphene foam film is placed through the second through hole.
Optionally, the graphene foam film has a size smaller than the graphite paper.
Optionally, the graphite rod is in threaded connection with the boat bottom plate, and the boat upper cover plate is unthreaded.
Optionally, the upper cover plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The graphite rod is made of high-purity graphite or isostatic pressing graphite; and/or
The bottom plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The material of the partition board is electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The graphite button is made of electrode graphite, high-purity graphite or isostatic pressing graphite.
According to another aspect of the present invention, there is provided a crucible for a graphitization furnace, comprising a crucible body and the graphite boat described above, wherein the crucible body is a hollow cavity, one end of the crucible body is open, and the graphite boat is placed at the other end of the crucible body.
Optionally, the crucible further comprises a crucible cover, the crucible cover covers the open end of the crucible body, preferably, the edge of the crucible cover is T-shaped, and the edge of the crucible cover is T-shaped and fixed at the open end of the crucible body.
Optionally, the crucible further comprises a bottom cushion block arranged between the graphite boat and the bottom of the crucible body to prevent the graphite boat from directly contacting the bottom of the crucible body, and preferably, the bottom cushion block is made of graphite felt, graphite block or carbon felt.
Optionally, the crucible further comprises a filler for filling the gap in the crucible body and enhancing heat transfer, and preferably, the filler is calcined coke with a particle size of 0-25mm, graphitized coke with a particle size of 0-25mm or graphite paper dust with a particle size of 0-80 mm.
According to a third aspect of the present invention, there is provided a method for preparing a graphene heat conducting film by using the crucible for a graphitization furnace, including:
putting a graphite boat into a crucible;
stacking a plurality of graphite papers and a plurality of groups of graphene foam films in a graphite boat at intervals by adopting a layer of graphite paper and a group of graphene foam films;
putting the crucible into a graphitization furnace for firing;
after firing is finished, taking out the graphite boat, and taking out the graphene foam film after the temperature is reduced to room temperature;
and (3) processing the graphene foam film to obtain the graphene heat-conducting film.
Optionally, the step of placing the graphite boat into the crucible comprises:
placing the bottom cushion block at the bottom of the crucible body;
fixedly connecting a graphite rod with a boat bottom plate through a graphite buckle;
and placing the boat bottom plate on the cushion block.
Optionally, the step of stacking the plurality of graphite papers and the plurality of graphene foam films in the graphite boat at intervals by using one layer of graphite paper and one group of graphene foam films comprises:
stacking a plurality of graphite papers and a plurality of groups of graphene foam films on a boat bottom plate at intervals by adopting a layer of graphite paper and a group of graphene foam films, and fixing the side surfaces of the graphite papers and the graphene foam films through a plurality of graphite rods;
the upper cover plate of the boat is arranged on the stacked graphite paper and the graphene foam film through a graphite rod;
the crucible cover is covered.
Optionally, stacking the plurality of graphite papers and the plurality of graphene foam films on the bottom plate of the boat at intervals by using one layer of graphite paper and one group of graphene foam films, wherein the side surface of the boat is fixed by a plurality of graphite rods, the method further includes:
at least one spacer is mounted on the stacked graphite paper and graphene foam film by a graphite rod to space the stacked graphite paper and graphene foam film apart.
Optionally, stacking the plurality of graphite papers and the plurality of graphene foam films on the bottom plate of the boat at intervals by using one layer of graphite paper and one group of graphene foam films, wherein the side surface of the boat is fixed by a plurality of graphite rods, the method further includes:
filling filler in the crucible body, and filling gaps in the crucible body by tapping to strengthen heat transfer.
The graphite boat for the graphitization furnace has the advantages of simple structure and convenience in loading and unloading, greatly improves the sintering yield of the graphene film, and can be used for large-scale production.
The graphite boat and the crucible are convenient to charge, the cost is reduced, and the yield of graphene is greatly improved.
The preparation method of the graphene heat-conducting film prevents the appearance of the graphene film from being damaged, and a large amount of impurities enter the surface of the graphene film, so that the performance of the graphene film can be improved, and the sintering yield can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a graphite boat for a graphitization furnace according to the present invention;
fig. 2 is a schematic view illustrating an upper cover plate of the upper boat in accordance with the present invention;
FIG. 3 is a schematic view of a graphite rod according to the present invention;
FIG. 4 is a schematic view of a graphite button according to the present invention;
FIG. 5 is a schematic view showing the fitting of the crucible and the graphite boat according to the present invention;
FIG. 6 is a schematic view of a crucible cover according to the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Fig. 1 is a schematic view of a graphite boat for a graphitization furnace according to the present invention, and as shown in fig. 1, the graphite boat 10 includes an upper boat cover plate 1, a lower boat cover plate 2, and a plurality of graphite rods 3, one end of each graphite rod is slidably connected to the upper boat cover plate, the other end of each graphite rod is fixedly connected to the lower boat cover plate, and a plurality of graphite papers 100 and a plurality of graphene foam films 200 are stacked between the lower boat cover plate and the upper boat cover plate at intervals using one graphite paper and one graphene foam film.
But graphite rod and boat upper cover plate sliding connection, graphite alkene foam film can take place the inflation under the high temperature condition, if the boat upper cover plate adds threaded fixation, can restrain the thermal film inflation, influences product property ability.
In one embodiment, as shown in fig. 1 and 4, the graphite boat further comprises a plurality of graphite buttons 4 for tightening the graphite rods to be coupled to the other end of the bottom plate of the boat.
Preferably, the graphite button is in threaded connection with the graphite rod.
In one embodiment, as shown in fig. 2, the upper cover plate of the boat is provided with a plurality of first through holes 11 for passing the graphite rods therethrough.
As shown in fig. 2, the upper cover plate of the boat is provided with a second through hole 12 corresponding to the size of the graphene foam film, and the graphene foam film is placed through the second through hole, preferably, the size of the graphene foam film is smaller than the size of the graphite paper, the uppermost layer attached to the upper cover plate of the boat is the graphite paper, and the upper cover plate of the boat reduces the influence on the expansion of the graphene foam film while pressing the graphite paper.
In one embodiment, as shown in fig. 1, the graphite boat further comprises at least one partition plate 5, which is provided with a first through hole 11 through which the graphite rod passes, and is disposed between the upper boat cover plate and the bottom boat plate, for enhancing stability of the graphite boat during graphitization of the graphene foam film.
Optionally, a second through hole 12 is formed in the partition board, the size of the second through hole corresponds to that of the graphene foam film, and the graphene foam film is placed through the second through hole. Preferably, the size of the graphene foam film is smaller than that of the graphite paper, and the graphene foam film can penetrate through the graphite paper while the partition board compresses the graphite paper.
In one embodiment, the graphene foam film has a size smaller than the size of the graphite paper.
In one embodiment, the graphite rod is screwed to the bottom plate of the boat, and the upper cover plate of the boat is unthreaded.
In one embodiment, the upper cover plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The graphite rod is made of high-purity graphite or isostatic pressing graphite; and/or
The bottom plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The material of the partition board is electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The graphite button is made of electrode graphite, high-purity graphite or isostatic pressing graphite.
Fig. 5 is a schematic view showing that the crucible and the graphite boat of the present invention are installed in cooperation, and as shown in fig. 5, the crucible for the graphitization furnace includes a crucible body 20, which is a hollow cavity, and a graphite boat 10, one end of which is open, and the other end of which is placed with the graphite boat.
In one embodiment, as shown in FIGS. 5 and 6, the crucible further comprises a crucible cover 30 covering an open end of the crucible body, preferably having a T-shaped rim that is secured to the open end of the crucible body.
In one embodiment, as shown in fig. 5, the crucible further comprises a bottom pad 40 disposed between the graphite boat and the bottom of the crucible body to prevent the graphite boat from directly contacting the bottom of the crucible body, and the bottom pad is preferably made of graphite felt, graphite block or carbon felt.
In one embodiment, as shown in fig. 5, the crucible further comprises a filler 50 for filling the space in the crucible body and enhancing heat transfer, and preferably, the filler is calcined coke with a particle size of 0-25mm, graphitized coke with a particle size of 0-25mm, or graphite paper dust with a particle size of 0-80 mm.
In one embodiment, as shown in FIG. 5, the crucible body is a cylindrical crucible body, and a circular opening is arranged on the top surface of the crucible body, and the opening is matched with the crucible cover for surface sealing; the edge of the circular crucible cover is T-shaped, and the edge of the circular graphite crucible cover is fixed at the top of the crucible body in a T-shape; the crucible body is a hollow cylinder, the height of the cylinder is 500-1200mm, the outer diameter of the cylinder is 200-800mm, the wall thickness is 20-60mm, and the bottom thickness is 20-80 mm.
The graphite boat comprises 1 boat bottom plate, 1 boat upper cover plate, 1-3 partition plates, 4-10 graphite rods and 4-10 graphite buckles, wherein:
the upper cover plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite and the like, is not threaded, has a thickness of 20-30mm, a radius of 200-400mm and is circular, and the edge of the upper cover plate is provided with 4-10 small circles with the diameter of 20-30 mm;
the structure of the partition plate is the same as that of the upper cover plate of the boat, so that the boat is prevented from inclining and the like in the graphitization process, and the sintering yield of the graphene film is influenced;
the graphite rods (as shown in figure 3) are made of high-purity graphite, isostatic pressing graphite and the like, the number of the graphite rods is 4-10, the length of the graphite rods is 800-1000mm, the lower end and the top end of the graphite rods are both provided with threads, the length of each thread segment is 20-50mm at the lower end, and is 80-100mm at the upper end;
the bottom plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite, and the like, the thickness of the bottom plate of the boat is 30-40mm, 4-10 cylindrical small holes with the diameter of 20-30mm are provided with threads, (M20-30) × 3, and the bottom plate of the boat is matched with the lower end of the graphite rod for use;
the graphite button is made of electrode graphite, high-purity graphite or isostatic pressing graphite and the like, has the inner diameter of 20-30mm, the outer diameter of 40-50mm and the height of 20-30mm, is provided with threads (M20-30) × 3, is connected with the lower end of the graphite rod, locks the graphite boat, and prevents the graphite boat from inclining in the graphitization process, thereby influencing the yield of graphene film sintering.
A graphite paper of a group of graphite alkene foam film corresponds the size of graphite alkene foam film and graphite paper in the middle of the graphite pole, and graphite alkene foam film size < carbon paper size, within graphite pole length 1000mm, reduces the thickness of boat bottom plate, boat upper cover plate as far as possible under the prerequisite of guaranteeing the sintering yield, the quantity of baffle.
In one embodiment, the crucible is a cylindrical crucible made of graphite and has a density of 1.5g/cm3The height of the crucible is 1100mm, the bottom surface of the crucible is a circle with the radius of 300mm, the wall thickness of the crucible is 50mm, the crucible cover is T-shaped, the thickness of the upper layer is 50mm, and the thickness of the lower layer is 30 mm.
The graphite boat includes 1 boat bottom plate, 1 boat upper cover plate, 1 baffle, 6 graphite poles and 6 graphite buckles, wherein:
the upper cover plate of the boat is not threaded, the thickness is 20mm, the radius is round of 245mm, there are 6 small circles with diameter of 25mm at the edge;
the structure of the partition plate is the same as that of the upper cover plate of the boat, and the partition plate is used for preventing the boat from inclining and the like in the graphitization process, so that the sintering yield of the graphene film is influenced;
the length of the graphite rod is 1000mm, the lower end and the top end are both provided with threads, and the length of the thread section is 30mm at the lower end and 100mm at the upper end;
the thickness of the boat bottom plate is 30mm, 6 cylindrical small holes with the diameter of 20mm are provided with threads, M20 x 3, and the bottom plate is matched with the lower end of the graphite rod;
the graphite button has the inner diameter of 20mm, the outer diameter of 40mm and the height of 30mm, is provided with a thread M20 x 3, is connected with the lower end of the graphite rod, locks the graphite boat, and prevents the graphite boat from inclining in the graphitization process, thereby influencing the yield of graphene film sintering.
The invention also provides a method for preparing the graphene heat-conducting film by using the crucible for the graphitization furnace, which comprises the following steps:
putting a graphite boat into a crucible;
stacking a plurality of graphite papers and a plurality of groups of graphene foam films in a graphite boat at intervals by adopting a layer of graphite paper and a group of graphene foam films;
putting the crucible into a graphitization furnace for firing;
after firing is finished, taking out the graphite boat, and taking out the graphene foam film after the temperature is reduced to room temperature;
and (3) processing the graphene foam film to obtain the graphene heat-conducting film.
In one embodiment, the step of placing the graphite boat into the crucible comprises:
placing the bottom cushion block at the bottom of the crucible body;
fixedly connecting a graphite rod with a boat bottom plate through a graphite buckle;
and placing the boat bottom plate on the cushion block.
In one embodiment, the step of stacking the plurality of graphite papers and the plurality of graphene foam films at intervals in the graphite boat by using one layer of graphite paper and one group of graphene foam films comprises:
stacking a plurality of graphite papers and a plurality of groups of graphene foam films on a boat bottom plate at intervals by adopting a layer of graphite paper and a group of graphene foam films, and fixing the side surfaces of the graphite papers and the graphene foam films through a plurality of graphite rods;
the upper cover plate of the boat is arranged on the stacked graphite paper and the graphene foam film through a graphite rod;
the crucible cover is covered.
In one embodiment, the stacking of the plurality of graphite papers and the plurality of graphene foam films on the bottom plate of the boat at intervals by using one layer of graphite paper and one group of graphene foam films, and the fixing of the side surface by the plurality of graphite rods further comprises:
at least one spacer is mounted on the stacked graphite paper and graphene foam film by a graphite rod to space the stacked graphite paper and graphene foam film apart.
In one embodiment, the stacking of the plurality of graphite papers and the plurality of graphene foam films on the bottom plate of the boat at intervals by using one layer of graphite paper and one group of graphene foam films, and the fixing of the side surface by the plurality of graphite rods further comprises:
filling filler in the crucible body, and filling gaps in the crucible body by tapping to strengthen heat transfer.
In one embodiment, a method for preparing a graphene thermal conductive film includes:
paving a bottom cushion block at the bottom of the crucible body;
placing the boat bottom plate on the bottom cushion block;
the graphite rod is fixed on the bottom plate of the boat through threads;
stacking graphite paper and graphene foam films at intervals according to a layer of graphite paper and a group of graphene foam films, placing the graphite paper and the graphene foam films on a bottom plate of a boat, and fixing the graphite paper and the graphene foam films through graphite rods at the periphery;
the upper cover plate of the boat is arranged on the graphite paper and the graphene foam film through a graphite rod;
the crucible cover covers the crucible body;
the whole crucible is put into a graphitization furnace for firing;
after the firing process is finished, taking down the crucible cover, taking out the graphite boat, cooling the graphite boat to room temperature, removing the upper cover plate, the graphite rod and the partition plate of the boat, and taking out the graphene foam film;
and (3) carrying out post-treatment (such as rolling) on the graphene foam film to obtain the graphene heat-conducting film.
The invention breaks through the traditional thought, provides the preparation method of the graphite boat and the crucible for the graphitization furnace and the graphene heat-conducting film, is used for solving the problem of large-batch preparation of the graphite film, and can improve the product performance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The utility model provides a graphite boat for graphitizing furnace, its characterized in that, includes boat upper cover plate, boat bottom plate and many graphite poles, but the one end and the boat upper cover plate sliding connection of graphite pole, the other end and the boat bottom plate fixed connection of graphite pole, many graphite papers and multiunit graphite alkene foam film adopt a set of graphite alkene foam film interval of one deck graphite paper to pile up between boat bottom plate and boat upper cover plate.
2. The graphite boat for a graphitization furnace as claimed in claim 1, further comprising a plurality of graphite buttons for fastening the graphite rod to the other end of the bottom plate of the boat; preferably, the graphite button is in threaded connection with the graphite rod.
3. The graphite boat for a graphitization furnace as claimed in claim 1, wherein a plurality of first through holes are provided on the upper boat cover plate for passing through the graphite rod, and preferably, a second through hole corresponding to the size of the graphene foam film is provided on the upper boat cover plate through which the graphene foam film is placed.
4. The graphite boat for a graphitization furnace as claimed in claim 1, further comprising at least one partition plate, wherein a first through hole through which a graphite rod passes is formed on the partition plate, the partition plate is disposed between the upper boat cover plate and the bottom boat plate for enhancing stability of the graphite boat during graphitization of the graphene foam film, and preferably, a second through hole is formed on the partition plate, the second through hole corresponds to a size of the graphene foam film, and the graphene foam film is placed through the second through hole.
5. The graphite boat for a graphitization furnace as recited in claim 1, wherein the size of the graphene foam film is smaller than that of the graphite paper.
6. The graphite boat for a graphitization furnace as claimed in claim 1, wherein the graphite rod is screw-coupled to a bottom plate of the boat, and the upper cover plate of the boat is not screw-threaded.
7. The graphite boat for a graphitization furnace as claimed in any one of claims 1 to 6, wherein the upper cover plate of the boat is made of electrode graphite, high purity graphite or isostatic pressure graphite; and/or
The graphite rod is made of high-purity graphite or isostatic pressing graphite; and/or
The bottom plate of the boat is made of electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The material of the partition board is electrode graphite, high-purity graphite or isostatic pressing graphite; and/or
The graphite button is made of electrode graphite, high-purity graphite or isostatic pressing graphite.
8. A crucible for a graphitization furnace, comprising a crucible body and the graphite boat of any one of claims 1 to 7, wherein the crucible body is a hollow cavity, one end of the crucible body is open, and the graphite boat is placed at the other end of the crucible body.
9. The crucible of claim 8, further comprising a crucible cover covering the open end of the crucible body, preferably, the edge of the crucible cover is T-shaped, and the edge of the crucible cover is T-shaped and fixed on the open end of the crucible body; and/or
The bottom cushion block is arranged between the graphite boat and the bottom of the crucible body to prevent the graphite boat from directly contacting the bottom of the crucible body, and preferably, the bottom cushion block is made of graphite felt, graphite blocks or carbon felt; and/or
The crucible is characterized by further comprising a filler, wherein the filler is used for filling gaps in the crucible body and enhancing heat transfer, and preferably, the filler is calcined coke with the particle size of 0-25mm, graphitized coke with the particle size of 0-25mm or graphite paper dust with the particle size of 0-80 mm.
10. A method for preparing a graphene thermal conductive film by using the crucible for a graphitization furnace according to claim 8 or 9, which comprises:
putting a graphite boat into a crucible;
stacking a plurality of graphite papers and a plurality of groups of graphene foam films in a graphite boat at intervals by adopting a layer of graphite paper and a group of graphene foam films;
putting the crucible into a graphitization furnace for firing;
after firing is finished, taking out the graphite boat, and taking out the graphene foam film after the temperature is reduced to room temperature;
and (3) processing the graphene foam film to obtain the graphene heat-conducting film.
11. The method of claim 10, wherein the step of placing the graphite boat in the crucible comprises:
placing the bottom cushion block at the bottom of the crucible body;
fixedly connecting a graphite rod with a boat bottom plate through a graphite buckle;
placing the boat bottom plate on the cushion block; and/or
The step of stacking a plurality of graphite papers and a plurality of groups of graphene foam films in a graphite boat at intervals by adopting a layer of graphite paper and a group of graphene foam films comprises the following steps:
stacking a plurality of graphite papers and a plurality of groups of graphene foam films on a boat bottom plate at intervals by adopting a layer of graphite paper and a group of graphene foam films, and fixing the side surfaces of the graphite papers and the graphene foam films through a plurality of graphite rods;
the upper cover plate of the boat is arranged on the stacked graphite paper and the graphene foam film through a graphite rod;
covering the crucible cover;
preferably, the step of stacking the plurality of graphite papers and the plurality of groups of graphene foam films on the bottom plate of the boat at intervals by using one layer of graphite paper and one group of graphene foam films, wherein the side surface of the boat is fixed by a plurality of graphite rods further comprises:
at least one partition plate is arranged on the stacked graphite paper and the graphene foam film through a graphite rod to separate the stacked graphite paper and the graphene foam film;
preferably, the step of stacking the plurality of graphite papers and the plurality of groups of graphene foam films on the bottom plate of the boat at intervals by using one layer of graphite paper and one group of graphene foam films, wherein the side surface of the boat is fixed by a plurality of graphite rods further comprises:
filling filler in the crucible body, and filling gaps in the crucible body by tapping to strengthen heat transfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828806.XA CN113371697A (en) | 2021-07-22 | 2021-07-22 | Graphite boat and crucible for graphitization furnace and preparation method of graphene heat-conducting film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828806.XA CN113371697A (en) | 2021-07-22 | 2021-07-22 | Graphite boat and crucible for graphitization furnace and preparation method of graphene heat-conducting film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113371697A true CN113371697A (en) | 2021-09-10 |
Family
ID=77582706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110828806.XA Pending CN113371697A (en) | 2021-07-22 | 2021-07-22 | Graphite boat and crucible for graphitization furnace and preparation method of graphene heat-conducting film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113371697A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922324A (en) * | 2014-04-11 | 2014-07-16 | 江苏悦达新材料科技有限公司 | Preparation method of graphite film with high heat conductivity |
| CN203768035U (en) * | 2014-04-11 | 2014-08-13 | 江苏悦达新材料科技有限公司 | Graphite boat used for producing radiating films |
| CN110542703A (en) * | 2019-10-14 | 2019-12-06 | 哈尔滨工业大学 | Device and method for monitoring thermal expansion stress and deformation of foam concrete in constraint state |
| CN111422856A (en) * | 2020-04-03 | 2020-07-17 | 常州富烯科技股份有限公司 | Method for flame reduction of graphene oxide film and preparation method of graphene film |
| CN112159952A (en) * | 2020-10-10 | 2021-01-01 | 哈尔滨科友半导体产业装备与技术研究院有限公司 | Device and method capable of simultaneously carbonizing multiple tantalum sheets |
| CN212403475U (en) * | 2020-04-20 | 2021-01-26 | 安徽恒炭新材料科技有限公司 | Graphite radiating film processing boat for horizontal graphitizing furnace |
| CN212450651U (en) * | 2020-04-17 | 2021-02-02 | 安徽恒炭新材料科技有限公司 | Boat for processing ultra-thick rolled artificial graphite heat-dissipation film |
| CN212450650U (en) * | 2020-04-17 | 2021-02-02 | 安徽恒炭新材料科技有限公司 | Boat for processing roll-shaped artificial graphite heat dissipation film |
| CN212982475U (en) * | 2020-05-19 | 2021-04-16 | 内蒙古蒙集新碳材有限公司 | A novel split type crucible for acheson graphitizing furnace |
-
2021
- 2021-07-22 CN CN202110828806.XA patent/CN113371697A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922324A (en) * | 2014-04-11 | 2014-07-16 | 江苏悦达新材料科技有限公司 | Preparation method of graphite film with high heat conductivity |
| CN203768035U (en) * | 2014-04-11 | 2014-08-13 | 江苏悦达新材料科技有限公司 | Graphite boat used for producing radiating films |
| CN110542703A (en) * | 2019-10-14 | 2019-12-06 | 哈尔滨工业大学 | Device and method for monitoring thermal expansion stress and deformation of foam concrete in constraint state |
| CN111422856A (en) * | 2020-04-03 | 2020-07-17 | 常州富烯科技股份有限公司 | Method for flame reduction of graphene oxide film and preparation method of graphene film |
| CN212450651U (en) * | 2020-04-17 | 2021-02-02 | 安徽恒炭新材料科技有限公司 | Boat for processing ultra-thick rolled artificial graphite heat-dissipation film |
| CN212450650U (en) * | 2020-04-17 | 2021-02-02 | 安徽恒炭新材料科技有限公司 | Boat for processing roll-shaped artificial graphite heat dissipation film |
| CN212403475U (en) * | 2020-04-20 | 2021-01-26 | 安徽恒炭新材料科技有限公司 | Graphite radiating film processing boat for horizontal graphitizing furnace |
| CN212982475U (en) * | 2020-05-19 | 2021-04-16 | 内蒙古蒙集新碳材有限公司 | A novel split type crucible for acheson graphitizing furnace |
| CN112159952A (en) * | 2020-10-10 | 2021-01-01 | 哈尔滨科友半导体产业装备与技术研究院有限公司 | Device and method capable of simultaneously carbonizing multiple tantalum sheets |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6757154B2 (en) | Double-layer capacitor components and method for preparing them | |
| Kim et al. | 2D reentrant auxetic structures of graphene/CNT networks for omnidirectionally stretchable supercapacitors | |
| KR102065867B1 (en) | Electrode for lithium-ion cell, lithium-ion cell, and method for manufacturing electrode for lithium-ion cell | |
| JP6209641B2 (en) | Flaky graphite crystal aggregate | |
| KR101456904B1 (en) | Carbon material and method for producing the same | |
| US6350520B1 (en) | Consolidated amorphous carbon materials, their manufacture and use | |
| KR20210059771A (en) | Silicon oxide/carbon composite anode material, manufacturing method thereof, and lithium ion battery | |
| US20020182387A1 (en) | Method for preparing composite flexible graphite material | |
| Zhan et al. | Binder-free Co–CoO x nanowire arrays for lithium ion batteries with excellent rate capability and ultra-long cycle life | |
| Zhao et al. | Self-adhesive Co3O4/expanded graphite paper as high-performance flexible anode for Li-ion batteries | |
| WO2005069410A1 (en) | Negative electrode for lithium secondary battery and lithium secondary battery | |
| Yao et al. | Carbon nanotube forest based electrostatic capacitor with excellent dielectric performances | |
| CA2786134A1 (en) | Layered composite material for use in a redox flow battery | |
| CN107978768B (en) | Fuel cell assembly and preparation method thereof | |
| CN113371697A (en) | Graphite boat and crucible for graphitization furnace and preparation method of graphene heat-conducting film | |
| Yang et al. | Rapid fabrication of hierarchical porous SiC/C hybrid structure: toward high-performance capacitive energy storage with ultrahigh cyclability | |
| EP0212965A2 (en) | Process for producing a thin carbonaceous plate | |
| KR101473432B1 (en) | Method for fabricating graphite | |
| CN113371705A (en) | Graphite crucible for graphitization furnace and method for preparing graphene heat-conducting film by using graphite crucible | |
| Ryu et al. | Highly oriented carbon nanotube sheets for rechargeable lithium oxygen battery electrodes | |
| Lv et al. | Highly compressible graphene aerogel with high thermal conductivity along both in-plane and through-plane directions | |
| KR102127037B1 (en) | Electrode structure and redox flow battery comprising the same | |
| Liu et al. | Crystalline multiwall carbon nanotubes and their application as a field emission electron source | |
| KR101612529B1 (en) | Pressurized crucible for preparing graphite | |
| CN115719801A (en) | Silicon-carbon composite material, preparation method thereof, negative plate and lithium secondary battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |