CN114292630A - Graphene carbon nanotube heat conduction slurry and preparation method thereof - Google Patents
Graphene carbon nanotube heat conduction slurry and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of graphene heat conduction materials, and particularly relates to graphene carbon nanotube heat conduction slurry and a preparation method thereof, wherein the graphene carbon nanotube heat conduction slurry comprises a tank body, a motor, a main shaft, a stirring paddle, a cross beam and a scraper; the adhesive, the N-methyl pyrrolidone, the N-butyl alcohol, the epoxy resin, the anti-settling agent and the graphene are added into the tank body, the motor drives the main shaft to rotate, the stirring paddle is driven to rotate, the solution is uniformly stirred, when the solution is discharged, the main shaft drives the cross beam to rotate, the scraper blade is driven to slide along the inner wall of the tank body, the solution on the inner wall of the tank body is scraped and discharged, the workload of workers is reduced, the working efficiency of the workers is improved, and then the production efficiency of the graphene carbon nanotube heat conduction slurry is improved.
Description
Technical Field
The invention belongs to the technical field of graphene heat conduction materials, and particularly relates to graphene carbon nanotube heat conduction slurry and a preparation method thereof.
Background
The graphene carbon nanotube heat-conducting slurry is a novel efficient conductive agent, replaces traditional conductive agents such as traditional conductive carbon black, conductive graphite, conductive carbon fiber and the like, has the advantages of being ultrahigh in length-diameter ratio, ultrahigh in specific surface area and ultralow in volume resistivity, remarkably reduces the internal resistance of a battery, improves the gram volume performance of an active material, remarkably reduces the using amount of the conductive agent and the using amount of a binder, improves the high-current discharge power density, enhances the absorption of electrolyte, prolongs the service life and the like.
A chinese patent with publication number CN112831245A discloses a graphene carbon nanotube thermal conductive slurry and a preparation method thereof, which comprises the following components in parts by weight: 1 to 5 parts of graphite; 1 to 5 parts of carbon nanotubes; 0.5 to 2 parts of dimethylformamide; 0.1 to 1.5 portions of n-butyl alcohol; 5 to 15 parts of epoxy resin; 80 to 95 parts of N-methylpyrrolidone; the invention also discloses a preparation method of the heat-conducting slurry, wherein the carbon nano tubes are mixed between graphene layers in the process of in-situ stripping of graphite into graphene; according to the invention, the carbon nanotubes are directionally inserted between the graphene layers to form ordered arrangement of the graphene and the carbon nanotubes, so that the heat conduction effect is improved.
In-process at the preparation stirring, a large amount of solutions can glue on the inner wall of agitator tank, the preparation is accomplished the back, all need the staff to scrape the solution on the agitator tank inner wall, avoid causing the waste, greatly increased staff's work load, reduced the preparation efficiency of graphite alkene carbon nanotube heat conduction thick liquids, if not clear up the inner wall of agitator tank, remaining solution just can cause the composition proportion of the graphite alkene carbon nanotube heat conduction thick liquids of follow-up preparation to change, cause the failure of preparation even.
Therefore, the invention provides graphene carbon nanotube heat conduction slurry and a preparation method thereof.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the graphene carbon nanotube heat conduction slurry is prepared from the following raw materials in parts by weight:
graphene 1-10
N-methyl pyrrolidone 60-80
1-5 parts of anti-settling agent
1-5 of adhesive
5-10 parts of epoxy resin
1-2 parts of n-butyl alcohol;
the anti-settling agent enables the graphene carbon nanotube heat-conducting slurry to have thixotropy, and the viscosity is greatly improved; the binder comprises auxiliary components such as a solvent, a curing agent, a toughening agent, a preservative, a colorant, a defoaming agent and the like, and the performance of the graphene carbon nanotube heat-conducting slurry is improved.
A preparation method of graphene carbon nanotube heat conduction slurry is suitable for preparing the graphene carbon nanotube heat conduction slurry, and comprises the following steps:
s1: adding a binder, N-methyl pyrrolidone, N-butyl alcohol, epoxy resin, an anti-settling agent and graphene into a tank body, driving a main shaft to rotate by a motor, driving a stirring paddle to rotate, uniformly stirring the solution, driving a cross beam to rotate by the main shaft when the solution is discharged, driving a scraping plate to slide along the inner wall of the tank body, scraping the solution on the inner wall of the tank body, and discharging to prepare a mixed solution;
s2: starting an ultrasonic generator, and carrying out ultrasonic oscillation on the mixed solution to obtain uniformly mixed and dispersed liquid;
s3: the graphite is gradually layered, the gaps of the graphite layers are gradually increased, the carbon nano tubes enter the gaps of the graphite layers along with the liquid, and the graphite is stripped into graphene in a liquid system;
s4: and filtering to remove the N-methyl pyrrolidone to prepare the graphene carbon nanotube heat conduction slurry.
Preferably, the stirring device in S1 includes a tank, a motor, a main shaft, a stirring paddle, a cross beam and a scraper; the middle part of the top surface of the tank body is fixedly connected with a motor, a rotating shaft of the motor is fixedly connected with a main shaft, the outer wall of the main shaft rotatably penetrates through the top wall of the tank body, the outer wall of the main shaft is fixedly connected with a plurality of stirring paddles, the outer wall of the main shaft is fixedly connected with a plurality of cross beams, the cross beams and the stirring paddles are alternately distributed, one end of each cross beam, close to the inner wall of the tank body, is fixedly connected with a scraper, and the scrapers are in sliding fit with the inner wall of the tank body; during operation, the binder, N-methyl pyrrolidone, N-butyl alcohol, epoxy resin, anti-settling agent and graphene are added into the tank body, the motor drives the main shaft to rotate, the stirring paddle is driven to rotate, the solution is uniformly stirred, when the solution is discharged, the main shaft drives the cross beam to rotate, the scraper blade is driven to slide along the inner wall of the tank body, the solution on the inner wall of the tank body is scraped and discharged, so that the workload of workers is reduced, the working efficiency of the workers is improved, and the production efficiency of the graphene carbon nanotube heat conduction slurry is improved.
Preferably, a sliding hole is formed in one side, close to the inner wall of the tank body, of the scraper, a sliding rod is slidably mounted in the sliding hole, an arc-shaped scraper is fixedly connected to one end, close to the inner wall of the tank body, of the sliding rod, the arc-shaped scraper is in sliding fit with the inner wall of the tank body, one end, far away from the tank body, of the sliding hole is fixedly connected to one end of a first spring, and the other end of the first spring is fixedly connected to the sliding rod; during operation, arc scraper contact jar inner wall of the body for the slide bar slides to the inside of slide opening, makes spring compression, and the elasticity that spring compression produced makes the inner wall of arc scraper laminating jar body, and the scraper blade drives the arc scraper and slides along the inner wall of the jar body, scrapes the solution on the internal wall of jar and discharges, thereby has improved the cleaning efficiency to the solution on the internal wall of jar, has further reduced the waste to solution then.
Preferably, an outer ring of one end of the sliding rod, which is positioned in the sliding hole, is fixedly connected with a circular ring, the circular ring is provided with a plurality of circular holes, a plurality of guide rods are fixedly connected inside the sliding hole, the outer ring of the guide rod is in sliding fit with the inner ring of the circular holes, the outer ring of the guide rod is fixedly connected with a plurality of annular outer bulges, the inner ring of the circular hole is fixedly connected with a plurality of annular inner bulges, and the annular outer bulges are in sliding fit with the annular inner bulges; during operation, when the slide bar slides along the slide opening, the drive ring slides along the guide rod, so that the annular outer protrusion slides in the annular inner protrusion, the slide bar vibrates, the arc scraper vibrates, the solution stained on the surface of the arc scraper is vibrated, and the recovery rate of the solution is further improved.
Preferably, a mounting hole is formed in one end, close to the scraper, of the cross beam, a support rod is slidably mounted in the mounting hole, one end, close to the inner wall of the tank body, of the support rod is fixedly connected with the scraper, one end, close to the main shaft, of the mounting hole is fixedly connected with one end of a second spring, and the other end of the second spring is fixedly connected with the support rod; during operation, when the main shaft rotates, drive the crossbeam and rotate, make the bracing piece produce centrifugal force, make bracing piece roll-off mounting hole, make No. two spring stretch, when the motor starts and closes, the rotational speed of motor is unstable, make scraper blade slew velocity change, make the centrifugal force that the bracing piece received change, No. two spring pulling bracing pieces slide, make the scraper blade take place vibrations, further improved the vibration frequency of arc scraper, further reduced the volume that solution is infected with on the arc scraper.
Preferably, the outer wall of the mounting hole is provided with a plurality of sliding chutes, one ends of the sliding chutes, which are close to the scraper, are fixedly connected with a sleeve, a piston is slidably mounted in the sleeve, a push rod of the piston is fixedly connected with the outer ring of the supporting rod, the outer ring of one end of the cross beam, which is close to the scraper, is provided with an annular cavity, an air bag is arranged in the annular cavity, one end of the sleeve, which is close to the annular cavity, is communicated with the air bag through an air pipe, one surface of the annular cavity, which is close to the supporting rod, is slidably mounted with a plurality of inclined teeth, one surface of the inclined teeth, which is close to the air bag, is fixedly connected with the outer wall of the air bag, and one sides of the inclined teeth, which are close to the supporting rod, are in sliding fit with the outer wall of the supporting rod; when the spindle stops rotating, the support rod slides into the mounting hole under the pulling of the second spring to drive the piston to slide out of the sleeve, so that the gas in the air bag is sucked out of the air bag, the air bag is contracted, and the helical teeth are retracted; through the sliding fit of skewed tooth and bracing piece, scrape the solution that the bracing piece surface is infected with, improved the clean degree on bracing piece surface, improved the gliding stability of bracing piece in the mounting hole.
Preferably, a sliding cavity is formed in the supporting rod, and an impact block is slidably mounted in the sliding cavity; when the bracing piece slided along the mounting hole for striking the piece and slided along smooth chamber, make striking the inner wall that the piece strikeed smooth chamber, make the bracing piece take place vibrations, shake the solution on bracing piece surface and fall, thereby further improved the clean degree on bracing piece surface.
Preferably, magnets are fixedly connected to one side of the impact block, which is far away from the scraper, and one side of the sliding cavity, which is far away from the scraper, the magnets on the two sides attract each other, and a third spring is fixedly connected to the middle of one side of the impact block, which is far away from the scraper; during operation, after the impact block slides out of the inner wall of the impact sliding cavity under the action of self centrifugal force, the magnets on two sides attract each other, so that the impact block slides towards the main shaft, the third spring is compressed, and the impact block slides out of the inner wall of the impact sliding cavity again under the action of the elastic force of the third spring and the self centrifugal force of the impact block, so that the vibration frequency of the support rod is further improved, and the cleanness degree of the surface of the support rod is further improved.
The invention has the following beneficial effects:
1. the graphene carbon nanotube heat conduction slurry and the preparation method thereof are characterized in that a motor, a main shaft, a stirring paddle, a cross beam and a scraper are arranged; the method comprises the following steps of adding a binder, N-methyl pyrrolidone, N-butyl alcohol, epoxy resin, an anti-settling agent and graphene into a tank body, driving a main shaft to rotate by a motor, driving a stirring paddle to rotate, uniformly stirring a solution, driving a scraper to slide along the inner wall of the tank body, and scraping and discharging the solution on the inner wall of the tank body, so that the workload of workers is reduced, the working efficiency of the workers is improved, and the production efficiency of the graphene carbon nanotube heat-conducting slurry is improved;
2. the graphene carbon nanotube heat conduction slurry and the preparation method thereof are characterized in that a sliding rod, an arc scraper and a first spring are arranged; the inner wall of the arc scraper contact jar body for the slide bar slides to the inside of slide opening, makes spring compression, and the elasticity that spring compression produced makes the inner wall of the arc scraper laminating jar body, and the scraper blade drives the arc scraper and slides along the inner wall of the jar body, scrapes the solution on the internal wall of jar and discharges, has improved the cleaning efficiency to the solution on the internal wall of jar, has further reduced the waste to solution.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a front view of a first embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is an enlarged view of a portion of FIG. 4 at C;
FIG. 6 is an enlarged view of a portion of FIG. 3 at D;
FIG. 7 is an enlarged view of a portion E of FIG. 3;
FIG. 8 is a partial cross-sectional view of a support bar according to a second embodiment of the present invention;
FIG. 9 is a flow chart of a method of making the present invention;
in the figure: 1. a tank body; 2. a motor; 3. a main shaft; 4. a stirring paddle; 5. a cross beam; 6. a squeegee; 7. a slide hole; 8. a slide bar; 9. an arc-shaped scraper; 10. a first spring; 11. a circular ring; 12. a circular hole; 13. a guide bar; 14. the ring is convex; 15. the ring is internally convex; 16. mounting holes; 17. a support bar; 18. a second spring; 19. a chute; 20. a sleeve; 21. a piston; 22. an annular cavity; 23. an air bag; 24. helical teeth; 25. a slide chamber; 26. an impact block; 27. a magnet; 28. a third spring; 29. a through groove; 30. a limiting block; 31. and (4) convex teeth.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example one
The graphene carbon nanotube heat conduction slurry provided by the embodiment of the invention comprises the following raw materials in parts by weight:
graphene 1-10
N-methyl pyrrolidone 60-80
1-5 parts of anti-settling agent
1-5 of adhesive
5-10 parts of epoxy resin
1-2 parts of n-butyl alcohol;
the anti-settling agent enables the graphene carbon nanotube heat-conducting slurry to have thixotropy, and the viscosity is greatly improved; the binder comprises auxiliary components such as a solvent, a curing agent, a toughening agent, a preservative, a colorant, a defoaming agent and the like, and the performance of the graphene carbon nanotube heat-conducting slurry is improved.
As shown in fig. 9, a preparation method of a graphene carbon nanotube thermal conductive paste is suitable for preparing the graphene carbon nanotube thermal conductive paste, and the preparation method includes the following steps:
s1: adding a binder, N-methyl pyrrolidone, N-butyl alcohol, epoxy resin, an anti-settling agent and graphene into a tank body 1, driving a main shaft 3 to rotate by a motor 2, driving a stirring paddle 4 to rotate, uniformly stirring the solution, driving a cross beam 5 to rotate by the main shaft 3 when the solution is discharged, driving a scraping plate 6 to slide along the inner wall of the tank body 1, scraping the solution on the inner wall of the tank body 1, and discharging to prepare a mixed solution;
s2: starting an ultrasonic generator, and carrying out ultrasonic oscillation on the mixed solution to obtain uniformly mixed and dispersed liquid;
s3: the graphite is gradually layered, the gaps of the graphite layers are gradually increased, the carbon nano tubes enter the gaps of the graphite layers along with the liquid, and the graphite is stripped into graphene in a liquid system;
s4: and filtering to remove the N-methyl pyrrolidone to prepare the graphene carbon nanotube heat conduction slurry.
As shown in fig. 1 to 2, the stirring device described in S1 includes a tank 1, a motor 2, a main shaft 3, a stirring paddle 4, a cross beam 5, and a scraper 6; the middle part of the top surface of the tank body 1 is fixedly connected with a motor 2, a rotating shaft of the motor 2 is fixedly connected with a main shaft 3, the outer wall of the main shaft 3 rotatably penetrates through the top wall of the tank body 1, the outer wall of the main shaft 3 is fixedly connected with a plurality of stirring paddles 4, the outer wall of the main shaft 3 is fixedly connected with a plurality of cross beams 5, the cross beams 5 and the stirring paddles 4 are alternately distributed, one end of each cross beam 5, which is close to the inner wall of the tank body 1, is fixedly connected with a scraper 6, and the scraper 6 is in sliding fit with the inner wall of the tank body 1; during operation, with the binder, N-methyl pyrrolidone, the N-butyl alcohol, epoxy, prevent that agent and graphite alkene add jar body 1 in, motor 2 drives main shaft 3 and rotates, drive stirring rake 4 and rotate, with the solution stirring, during discharge solution, main shaft 3 drives crossbeam 5 and rotates, drive scraper blade 6 and slide along jar inner wall of body 1, scrape the discharge with the solution on jar body 1 inner wall, thereby staff's work load has been reduced, staff's work efficiency has been improved, then the production efficiency of graphite alkene carbon nanotube heat conduction thick liquids has been improved.
As shown in fig. 3 to 4, a sliding hole 7 is formed in one side of the scraper 6 close to the inner wall of the tank body 1, a sliding rod 8 is slidably mounted inside the sliding hole 7, an arc-shaped scraper 9 is fixedly connected to one end of the sliding rod 8 close to the inner wall of the tank body 1, the arc-shaped scraper 9 is in sliding fit with the inner wall of the tank body 1, one end of the sliding hole 7 far away from the tank body 1 is fixedly connected to one end of a first spring 10, and the other end of the first spring 10 is fixedly connected to the sliding rod 8; during operation, arc scraper 9 contacts the inner wall of the tank body 1, make slide bar 8 slide to the inside of slide opening 7, make spring 10 compress, the elasticity that spring 10 compression produced, make arc scraper 9 laminate the inner wall of the tank body 1, scraper blade 6 drives arc scraper 9 and slides along the inner wall of the tank body 1, scrape the solution on the inner wall of the tank body 1 and discharge, thereby improved the cleaning efficiency to the solution on the inner wall of the tank body 1, then further reduced the waste to the solution.
As shown in fig. 5, an outer ring of one end of the slide rod 8, which is located in the slide hole 7, is fixedly connected with a circular ring 11, the circular ring 11 is provided with a plurality of circular holes 12, the inside of the slide hole 7 is fixedly connected with a plurality of guide rods 13, the outer ring of the guide rod 13 is in sliding fit with the inner ring of the circular hole 12, the outer ring of the guide rod 13 is fixedly connected with a plurality of annular outward bulges 14, the inner ring of the circular hole 12 is fixedly connected with a plurality of annular inward bulges 15, and the annular outward bulges 14 are in sliding fit with the annular inward bulges 15; during operation, when the slide bar 8 slides along the slide hole 7, the ring 11 is driven to slide along the guide rod 13, the annular outer protrusion 14 and the annular inner protrusion 15 slide, the slide bar 8 vibrates, the arc-shaped scraper 9 is driven to vibrate, the solution stained on the surface of the arc-shaped scraper 9 is vibrated, and the recovery rate of the solution is further improved.
As shown in fig. 3, a mounting hole 16 is formed at one end of the beam 5 close to the scraper 6, a support rod 17 is slidably mounted inside the mounting hole 16, one end of the support rod 17 close to the inner wall of the tank body 1 is fixedly connected with the scraper 6, one end of the mounting hole 16 close to the main shaft 3 is fixedly connected with one end of a second spring 18, and the other end of the second spring 18 is fixedly connected with the support rod 17; during operation, main shaft 3 rotates, it rotates to drive crossbeam 5, make bracing piece 17 produce centrifugal force, make bracing piece 17 roll-off mounting hole 16, make No. two spring 18 tensile, when motor 2 starts and closes, the rotational speed of motor 2 is unstable, make scraper blade 6 slew velocity change, make the centrifugal force that bracing piece 17 received change, No. two spring 18 pulling bracing piece 17 slides, make scraper blade 6 take place vibrations, the vibration frequency of arc scraper 9 has further been improved, the further volume that solution is infected with on arc scraper 9 that has reduced.
As shown in fig. 6 to 7, the outer wall of the mounting hole 16 is provided with a plurality of sliding grooves 19, one end of each sliding groove 19, which is close to the scraper 6, is fixedly connected to a sleeve 20, a piston 21 is slidably mounted inside the sleeve 20, a push rod of the piston 21 is fixedly connected to the outer ring of the support rod 17, one end of the cross beam 5, which is close to the scraper 6, is provided with an annular cavity 22, an air bag 23 is disposed inside the annular cavity 22, one end of the sleeve 20, which is close to the annular cavity 22, is communicated with the air bag 23 through an air pipe, one surface of the annular cavity 22, which is close to the support rod 17, is slidably mounted with a plurality of helical teeth 24, one surface of the helical teeth 24, which is close to the air bag 23, is fixedly connected to the outer wall of the air bag 23, and one side of the helical teeth 24, which is close to the support rod 17, is slidably matched with the outer wall of the support rod 17; when the spindle 3 rotates to drive the supporting rod 17 to slide out of the mounting hole 16, the piston 21 is driven to slide into the sleeve 20, gas in the sleeve 20 is pressed into the air bag 23, the air bag 23 is expanded, the helical teeth 24 are pushed out, the helical teeth 24 are contacted with the supporting rod 17, when the spindle 3 stops rotating, the supporting rod 17 slides into the mounting hole 16 under the pulling of the second spring 18, the piston 21 is driven to slide out of the sleeve 20, the gas in the air bag 23 is sucked out, the air bag 23 is contracted, and the helical teeth 24 are retracted; through the sliding fit of the helical teeth 24 and the supporting rod 17, the solution stained on the surface of the supporting rod 17 is scraped, the cleaning degree of the surface of the supporting rod 17 is improved, and the stability of the supporting rod 17 sliding in the mounting hole 16 is improved.
A sliding cavity 25 is formed in the supporting rod 17, and an impact block 26 is slidably mounted in the sliding cavity 25; when the supporting rod 17 slides along the mounting hole 16, the impact block 26 slides along the sliding cavity 25, the impact block 26 impacts the inner wall of the sliding cavity 25, the supporting rod 17 vibrates, the solution on the surface of the supporting rod 17 is shaken off, and the cleaning degree of the surface of the supporting rod 17 is further improved.
Example two
As shown in fig. 8, a first comparative example, in which another embodiment of the present invention is: a through groove 29 is formed in the middle of the supporting rod 17, a limiting block 30 is fixedly connected inside the mounting hole 16, the side wall of the limiting block 30 is in sliding fit with the side wall of the through groove 29, a plurality of convex teeth 31 are fixedly connected to the side wall of the limiting block 30 and the side wall of the through groove 29, and the convex teeth 31 on the two sides are in sliding fit with each other; during operation, when the supporting rod 17 slides along the mounting hole 16, the limiting block 30 slides along the through groove 29, the convex teeth 31 at two sides are in sliding fit, the sliding distance of the supporting rod 17 is limited, and the vibration frequency of the supporting rod 17 is increased.
When in work: adding a binder, N-methyl pyrrolidone, N-butanol, epoxy resin, an anti-settling agent and graphene into the tank body 1, driving the main shaft 3 to rotate by the motor 2, driving the stirring paddle 4 to rotate, and uniformly stirring the solution;
when the solution is discharged, the main shaft 3 drives the beam 5 to rotate, the beam 5 is driven to rotate, the support rod 17 generates centrifugal force, the support rod 17 slides out of the mounting hole 16, the second spring 18 is stretched, the scraper 6 is pushed to be close to the inner wall of the tank body 1, the arc-shaped scraper 9 contacts the inner wall of the tank body 1, the slide rod 8 slides towards the inside of the slide hole 7, the first spring 10 is compressed, the elastic force generated by the compression of the first spring 10 is compressed, the arc-shaped scraper 9 is attached to the inner wall of the tank body 1, the scraper 6 drives the arc-shaped scraper 9 to slide along the inner wall of the tank body 1, the solution on the inner wall of the tank body 1 is scraped and discharged, meanwhile, when the slide rod 8 slides along the slide hole 7, the circular ring 11 is driven to slide along the guide rod 13, the annular outer protrusion 14 and the annular inner protrusion 15 slide, the slide rod 8 is vibrated, the arc-shaped scraper 9 is driven to vibrate, and the solution stained on the surface of the arc-shaped scraper 9 is shaken, meanwhile, when the main shaft 3 rotates to drive the supporting rod 17 to slide out of the mounting hole 16, the piston 21 is driven to slide into the sleeve 20, the gas in the sleeve 20 is pressed into the air bag 23, the air bag 23 is expanded, the helical teeth 24 are pushed out, the helical teeth 24 are contacted with the support rod 17, the helical teeth 24 are in sliding fit with the support rod 17, the solution stained on the surface of the support rod 17 is scraped off, the impact block 26 slides out of the inner wall of the impact sliding cavity 25 under the action of self centrifugal force, the magnets 27 on both sides attract, causing the striking block 26 to slide towards the spindle 3, causing the third spring 28 to compress, the inner wall of the impact sliding cavity 25 slides out again under the action of the elasticity of the third spring 28 and the self centrifugal force of the impact block 26, so that the vibration frequency of the support rod 17 is improved, the solution stained on the surface of the support rod 17 is scraped, the workload of workers is reduced, the working efficiency of the workers is improved, and the production efficiency of the graphene carbon nanotube heat conduction slurry is improved.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but 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 construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (10)
1. The graphene carbon nanotube heat conduction slurry is characterized in that: the graphene carbon nanotube heat-conducting slurry is prepared from the following raw materials in parts by weight:
graphene 1-10
N-methyl pyrrolidone 60-80
1-5 parts of anti-settling agent
1-5 of adhesive
5-10 parts of epoxy resin
1-2 parts of n-butyl alcohol.
2. A preparation method of graphene carbon nanotube heat conduction slurry is characterized by comprising the following steps: the preparation method is suitable for preparing the graphene carbon nanotube heat-conducting slurry as described in claim 1, and comprises the following steps:
s1: adding a binder, N-methyl pyrrolidone, N-butanol, epoxy resin, an anti-settling agent and graphene into a tank body (1), driving a main shaft (3) to rotate by a motor (2), driving a stirring paddle (4) to rotate, uniformly stirring the solution, driving a cross beam (5) to rotate by the main shaft (3) when the solution is discharged, driving a scraping plate (6) to slide along the inner wall of the tank body (1), scraping the solution on the inner wall of the tank body (1) and discharging to prepare a mixed solution;
s2: starting an ultrasonic generator, and carrying out ultrasonic oscillation on the mixed solution to obtain uniformly mixed and dispersed liquid;
s3: the graphite is gradually layered, the gaps of the graphite layers are gradually increased, the carbon nano tubes enter the gaps of the graphite layers along with the liquid, and the graphite is stripped into graphene in a liquid system;
s4: and filtering to remove the N-methyl pyrrolidone to prepare the graphene carbon nanotube heat conduction slurry.
3. The preparation method of the graphene carbon nanotube thermal conductive paste according to claim 2, wherein the preparation method comprises the following steps: the stirring device in the S1 comprises a tank body (1), a motor (2), a main shaft (3), a stirring paddle (4), a cross beam (5) and a scraper (6); the utility model discloses a multi-stage stirring tank, including jar body (1), top surface middle part rigid coupling motor (2) of body (1), pivot rigid coupling main shaft (3) of motor (2), the outer wall of main shaft (3) rotates the roof that runs through jar body (1), a plurality of stirring rake (4) of outer wall rigid coupling of main shaft (3), a plurality of crossbeams (5) of outer wall rigid coupling of main shaft (3), crossbeam (5) and stirring rake (4) alternate distribution, crossbeam (5) are close to one end rigid coupling scraper blade (6) of jar body (1) inner wall, scraper blade (6) and the inner wall sliding fit of jar body (1).
4. The preparation method of the graphene carbon nanotube thermal conductive paste according to claim 3, wherein the preparation method comprises the following steps: the utility model discloses a jar body, including scraper blade (6), jar body (1), inner wall one side that is close to jar body (6) sets up slide opening (7), the inside slidable mounting slide bar (8) of slide opening (7), slide bar (8) are close to one end rigid coupling arc scraper (9) of the inner wall of the jar body (1), arc scraper (9) and the inner wall sliding fit of the jar body (1), the one end of the one end rigid coupling spring (10) of the jar body (1) is kept away from in slide opening (7), the other end and slide bar (8) rigid coupling of spring (10).
5. The preparation method of the graphene carbon nanotube thermal conductive paste according to claim 4, wherein the preparation method comprises the following steps: the sliding rod (8) is located in a sliding hole (7), an outer ring at one end of the sliding rod is fixedly connected with a circular ring (11), the circular ring (11) is provided with a plurality of circular holes (12), a plurality of guide rods (13) are fixedly connected inside the sliding hole (7), an outer ring of each guide rod (13) is in sliding fit with an inner ring of the corresponding circular hole (12), an outer ring of each guide rod (13) is fixedly connected with a plurality of annular outer bulges (14), an inner ring of each circular hole (12) is fixedly connected with a plurality of annular inner bulges (15), and the annular outer bulges (14) are in sliding fit with the annular inner bulges (15).
6. The preparation method of the graphene carbon nanotube thermal conductive paste according to claim 3, wherein the preparation method comprises the following steps: the novel multifunctional cleaning tank is characterized in that a mounting hole (16) is formed in one end, close to the scraper (6), of the cross beam (5), a support rod (17) is installed inside the mounting hole (16) in a sliding mode, one end, close to the inner wall of the tank body (1), of the support rod (17) is fixedly connected with the scraper (6), one end, close to the main shaft (3), of the mounting hole (16) is fixedly connected with one end of a second spring (18), and the other end of the second spring (18) is fixedly connected with the support rod (17).
7. The preparation method of the graphene carbon nanotube thermal conductive paste according to claim 6, wherein the preparation method comprises the following steps: a plurality of sliding grooves (19) are formed in the outer wall of the mounting hole (16), one end, close to the scraper (6), of each sliding groove (19) is fixedly connected with a sleeve (20), a piston (21) is arranged in the sleeve (20) in a sliding way, a push rod of the piston (21) is fixedly connected with the outer ring of the support rod (17), an annular cavity (22) is arranged on the outer ring of one end of the cross beam (5) close to the scraper (6), an air bag (23) is arranged in the annular cavity (22), one end of the sleeve (20) close to the annular cavity (22) is communicated with the air bag (23) through an air pipe, one surface of the ring cavity (22) close to the support rod (17) is provided with a plurality of helical teeth (24) in a sliding way, one surface of the helical tooth (24) close to the air bag (23) is fixedly connected with the outer wall of the air bag (23), one side of the helical teeth (24) close to the supporting rod (17) is in sliding fit with the outer wall of the supporting rod (17).
8. The preparation method of the graphene carbon nanotube thermal conductive paste according to claim 6, wherein the preparation method comprises the following steps: a sliding cavity (25) is formed in the supporting rod (17), and an impact block (26) is slidably mounted in the sliding cavity (25).
9. The method for preparing the graphene carbon nanotube thermal conductive paste according to claim 8, wherein the graphene carbon nanotube thermal conductive paste is prepared by the following steps: striking block (26) keep away from one side of scraper blade (6) and slide chamber (25) and keep away from equal rigid coupling magnet (27) in one side of scraper blade (6), both sides magnet (27) attract each other, striking block (26) keep away from No. three spring (28) of one side middle part rigid coupling of scraper blade (6).
10. The method for preparing the graphene carbon nanotube thermal conductive paste according to claim 9, wherein the graphene carbon nanotube thermal conductive paste comprises: the middle part of bracing piece (17) is seted up logical groove (29), the inside rigid coupling stopper (30) of mounting hole (16), the lateral wall of stopper (30) and the lateral wall sliding fit who leads to groove (29), the lateral wall of stopper (30) and the equal rigid coupling of the lateral wall that leads to groove (29) a plurality of dogtooths (31), both sides dogtooth (31) sliding fit each other.
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| CN114733226A (en) * | 2022-04-13 | 2022-07-12 | 鲁贞满 | Preparation equipment and preparation method of sodium nitrate |
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| CN117466290A (en) * | 2023-12-27 | 2024-01-30 | 深圳稀导技术有限公司 | Graphene extraction device and method for preparing raw materials of heat dissipation film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114733226A (en) * | 2022-04-13 | 2022-07-12 | 鲁贞满 | Preparation equipment and preparation method of sodium nitrate |
| CN114733226B (en) * | 2022-04-13 | 2024-02-20 | 怀化恒安石化有限公司 | Sodium nitrate preparation equipment and preparation method |
| CN114713120A (en) * | 2022-04-15 | 2022-07-08 | 江苏瑞澜特新材料有限公司 | A mix mill base device for production of water-soluble film |
| CN115282803A (en) * | 2022-07-28 | 2022-11-04 | 湖北月竹里建材有限公司 | Concrete water reducing agent preparation device |
| CN115282803B (en) * | 2022-07-28 | 2024-03-22 | 陕西双和建材科技有限公司 | Concrete water reducing agent preparation facilities |
| CN117466290A (en) * | 2023-12-27 | 2024-01-30 | 深圳稀导技术有限公司 | Graphene extraction device and method for preparing raw materials of heat dissipation film |
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