CN112744796A - Boron nitride nanosheet preparation device and process method - Google Patents
Boron nitride nanosheet preparation device and process method Download PDFInfo
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- CN112744796A CN112744796A CN202110025795.1A CN202110025795A CN112744796A CN 112744796 A CN112744796 A CN 112744796A CN 202110025795 A CN202110025795 A CN 202110025795A CN 112744796 A CN112744796 A CN 112744796A
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- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/064—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with boron
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
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- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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Abstract
The invention discloses a preparation device and a process method of boron nitride nanosheets, and relates to the technical field of processing of ceramic powder materials, wherein a built-in core rod is arranged in a roller, and the roller and the built-in core rod can rotate relatively; the drum is provided with a material port, materials are added into the drum through the material port, and the materials are sheared and processed in the relative rotation process of the drum and the built-in core rod. The process method comprises the following steps: performing roller dry grinding on the mixture of the hexagonal boron nitride and the hard particles, and performing strong shearing and impact on the powder through a roller, a built-in core rod, a cylindrical bulge and a through groove to achieve the functions of dispersion and stripping; and then placing the mixture in deionized water for ultrasonic treatment, standing, extracting supernatant and drying to obtain the boron nitride nanosheet. The friction coefficient of the mixture is increased by using tiny hard particles as an intermediate material, and sliding friction is applied to layered hexagonal boron nitride by utilizing the structure of a built-in core rod, so that the boron nitride nanosheets are prepared by interlayer peeling.
Description
Technical Field
The invention relates to the technical field of processing of ceramic powder materials, in particular to a device and a process method for preparing boron nitride nanosheets.
Background
Efficient 2D material production is a prerequisite for commercial applications. At present, only graphene and graphene oxide can be produced in batches, and other 2D materials hinder their technical application due to the inability of large-scale production. The boron nitride nanosheet has the characteristics of high thermal conductivity, low expansion coefficient, good high-temperature heat insulation, stable chemical property, excellent lubricating property and the like. The preparation of the boron nitride nanosheet raw material is difficult, and the commercialization is greatly hindered. The traditional preparation process adopts a ball milling and liquid phase stripping mode, and the adjacent layers of the lamellar boron nitride slide by power, so that the aim of stripping the lamellar boron nitride is fulfilled. However, ball milling usually requires a long time to achieve high yield, and the huge impact force of the hard milling balls can cause the size of the boron nitride nanosheets prepared by peeling to be small, and the quality and structural integrity of the nanosheets cannot be guaranteed, so that the performance of the nanosheets can be damaged. In view of this, there is a need to develop a preparation process capable of efficiently stripping boron nitride nanosheets, and the prepared boron nitride nanosheets need to have the characteristics of high yield, low cost, large sheet size and complete structure.
Disclosure of Invention
Aiming at the characteristics of low yield, high energy consumption, damaged nanosheet structure and the like in the existing process for preparing the boron nitride nanosheet, the invention aims to provide the device for preparing the boron nitride nanosheet based on the roller dry-grinding shearing effect, and the friction force borne by mixed powder is decomposed into small shearing force by controlling the proportion of raw material powder and auxiliary hard particles, the rotation of the roller and a built-in core rod and the action of the hard particles through the rotation of the device and the action of the hard particles, so that the two-dimensional flaky boron nitride nanosheet is prepared by inducing the hexagonal boron nitride layers to be efficiently stripped.
The invention is realized by the following technical scheme:
a boron nitride nanosheet preparation device comprises a roller and a built-in core rod; the built-in core rod is arranged in the roller, and the roller and the built-in core rod can rotate relatively; the drum is provided with a material port, materials are added into the drum through the material port, and the materials are sheared and processed in the relative rotation process of the drum and the built-in core rod.
Furthermore, a plurality of cylindrical bulges are arranged on the outer side wall of the built-in mandrel, the cylindrical bulges are uniformly distributed in the circumferential direction of the built-in mandrel, and through grooves are formed in the cylindrical bulges in the circumferential direction of the built-in mandrel.
Further, the length of the built-in core rod is l, and each interval is arranged in the axial direction of the built-in core rod
And a plurality of cylindrical bulges are uniformly arranged around the circumferential direction of the built-in core rod.
Furthermore, four cylindrical bulges are uniformly arranged at the same axial position of the built-in core rod along the circumferential direction of the built-in core rod.
Furthermore, the height of the cylindrical protrusion is delta (R-R), R is the radius of the roller, R is the radius of the built-in core rod, and delta is a proportionality coefficient and takes a value of 0.75-0.9.
Furthermore, on the internal core rod, four cylindrical bulges at the same circumferential position and four cylindrical bulges at the axially adjacent positions are distributed in a staggered manner at an angle of 45 degrees in the circumferential direction.
Furthermore, the opening direction of the through groove is the same as the circumferential rotation direction of the built-in core rod, and the height of the through groove is
The average diameter of the hard particles is 1-10 μm, and s is a proportionality coefficient and is 50-100.
Further, the built-in core rod is driven to rotate through the first rotating shaft; a second rotating shaft and a driven rotating shaft are arranged outside the roller; the second rotating shaft drives the roller to rotate through the friction force between the second rotating shaft and the roller; the roller drives the driven rotating shaft to rotate.
Further, the roller and the built-in core rod rotate in opposite directions.
The process method of the boron nitride nanosheet preparation device comprises the following steps:
the method comprises the following steps: putting mixed powder of hexagonal boron nitride and hard particles between a roller and a built-in core rod through a material port;
step two: after the roller and the built-in core rod rotate, the mixed powder rotates along with the roller, after rising, the mixed powder is separated from the wall of the roller due to gravity and falls, the mixed powder rolls in the roller at a high speed and moves relative to the roller and the built-in core rod, and the inner wall of the roller and the outer wall of the built-in core rod generate strong shearing and impact on the mixed powder to achieve the effects of dispersion and stripping;
step three: and pouring the stripped mixed powder into a beaker filled with deionized water from a material port, carrying out ultrasonic dispersion on the stripped mixed powder for 2 hours by using an ultrasonic oscillator, and standing in the beaker for 8 hours to finally obtain the boron nitride nanosheet.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the boron nitride nanosheet preparation device based on the roller dry grinding shearing effect, the friction force provided by the rotation of the device to the mixed powder is decomposed into small shearing force by the hard particles, the stripping rate of hexagonal boron nitride is greatly improved, and the yield of the boron nitride nanosheets is high.
2. According to the device disclosed by the invention, the stripped boron nitride nanosheets are enabled to avoid the defects of small size and damaged structure of the prepared boron nitride nanosheet material caused by traditional ball-milling impact stripping through the shearing effect between the roller and the built-in core rod. The boron nitride nanosheet prepared by the process has the advantages of large flaky size, high quality, complete structure and low influence on a stripping material.
3. The preparation process of the boron nitride nanosheet based on the roller dry-grinding shearing effect, disclosed by the invention, has the advantages of simple required equipment, short process flow, low raw material cost, low input energy consumption and no generation of pollutants.
4. Set up cylindrical protrusion on the built-in plug, set up logical groove on cylindrical protrusion, and cylindrical protrusion arranges according to certain rule, improves the dispersion intensity of plug to mixed powder, rotates in-process cylindrical protrusion and breaks up mixed powder at built-in plug, avoids mixed powder to pile up the reunion influence in the cylinder and peels off efficiency.
Drawings
FIG. 1 is a schematic diagram of a boron nitride nanosheet preparation process based on a roller dry-grinding shearing effect according to the present invention;
FIG. 2 is a schematic view of the interior of the drum and a schematic view of the peeling mechanism according to the present invention;
fig. 3 is a detail view of the cylindrical protrusion according to the present invention.
The reference numbers are as follows:
1-a frame table; 2, a motor I; 3-fastening the knob; 4-a first rotating shaft; 5-material port; 6-motor II; 7-ultrasonic oscillator; 8-beaker; 9-motor switch; 10-knob; 11-a roller; 12-build-in core rod; 13-a cylindrical protrusion; 14-hexagonal boron nitride; 15-hard particles; 16-a driven rotating shaft; 17-a second shaft; 18-through groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
A boron nitride nanosheet preparation device comprises a roller 11 and a built-in core rod 12; the built-in mandril 12 is arranged in the roller 11, and the roller 11 and the built-in mandril 12 can rotate relatively; the roller 11 is provided with a material port 5, materials are added into the roller 11 through the material port 5, and the materials are sheared and processed in the relative rotation process of the roller 11 and the built-in core rod 12; a plurality of cylindrical protrusions 13 are arranged on the outer side wall of the built-in core rod 12, the cylindrical protrusions 13 are uniformly distributed along the circumferential direction of the built-in core rod 12, and through grooves 18 are formed in the cylindrical protrusions 13 along the circumferential direction of the built-in core rod 12; the length of the built-in core rod 12 is l, and the built-in core rod 12 is in the axial directionEach interval in direction
And a plurality of cylindrical protrusions 13 are uniformly arranged around the circumferential direction of the built-in core rod 12; four cylindrical protrusions 13 are uniformly arranged at the same axial position of the built-in core rod 12 along the circumferential direction of the built-in core rod 12; on the built-in core rod 12, four cylindrical protrusions 13 at the same circumferential position and four cylindrical protrusions 13 at axially adjacent positions are distributed in a staggered manner at an angle of 45 degrees in the circumferential direction.
With reference to fig. 1 to 3, a boron nitride nanosheet preparation apparatus based on a roller dry-grinding shearing effect, wherein a roller 11 is disposed on a driven rotating shaft 16 and a second rotating shaft 17, a built-in core rod 12 is disposed in the roller 11, a plurality of rows of cylindrical protrusions 13 are uniformly arranged on the outer wall of the built-in core rod 12, the cylindrical protrusions 1313 are distributed in a staggered array along the axial direction of the built-in core rod 12, 4 cylindrical protrusions 13 are disposed in the circumferential direction of the built-in core rod 12 along the axial direction of the built-in core rod 12, and each cylindrical protrusion 13 is provided with two through grooves 18 along the rotating direction of the built; the operation principle of the powder mixing device is that a motor I2 drives a first rotating shaft 4 to rotate through a belt pulley, the first rotating shaft 4 and the built-in core rod 12 can drive the built-in core rod 12 to rotate after being welded, a motor II 6 drives a second rotating shaft 17 to rotate in the forward direction through the action of the belt pulley, the second rotating shaft 17 drives the roller 11 to rotate in the reverse direction through friction force, the roller 11 drives a driven shaft III 16 to rotate in the forward direction, the driven rotating shaft 16 plays a role in driving and supporting, and a motor switch 9 and a knob 10 respectively control the starting and stopping of the motor I2 and the motor II 6 and the rotating speeds of the first rotating shaft 4 and the second rotating shaft 17; a closable material port 5 is arranged on the roller 11 and used for putting and taking out the mixed powder; the roller 11, the built-in core rod 12 and the through groove 18 rotate to apply shearing force to the mixed powder to peel off the boron nitride nanosheets, and an ultrasonic oscillator 7 and a beaker 8 of an ultrasonic oscillation device are arranged below the roller 11 and used for ultrasonically dispersing and standing the peeled mixed powder.
After the drum 11 is started, the mixed powder in the drum rotates along with the drum, the mixed powder is separated from the drum wall and falls down due to gravity after rising, the mixed powder rolls in the drum 11 at a high speed and moves relative to the drum 11 and the built-in core rod 12, and the inner wall of the drum 11 and the outer wall of the built-in core rod 12 generate strong shearing and impact on the mixed powder to achieve the effects of dispersion and peeling.
The drum 11 is provided with a cylindrical mandrel 12, and the length of the mandrel 12 is l at intervals
The circumference of the built-in core rod 12 is provided with 4 cylindrical bulges 13, and the angle difference between the adjacent cylindrical bulges 13 is 90 degrees; the height of the cylindrical protrusion 13 is delta (R-R), R is the radius of the roller 11, R is the radius of the built-in core rod 12, and delta is a proportionality coefficient and takes the value of 0.75-0.9; 4 cylindrical protrusions 13 adjacent to each other on the circumference
The cylindrical protrusions 13 on the circumference are respectively distributed in a 45-degree staggered manner, so that the dispersion strength of the built-in core rod 12 to the mixed powder can be improved, the protrusions break up the mixed powder in the rotation process of the built-in core rod 12, and the mixed powder is prevented from accumulating and agglomerating in the roller 11 to influence the stripping efficiency.
Two through grooves 18 are arranged on the cylindrical protrusion 13, the opening direction of the through grooves 18 is the same as the circumferential rotation direction of the core rod, and the height of the through grooves is
The average diameter of the hard particles 15 is 1-10 mu m, s is a proportionality coefficient and is 50-100, when the core rod rotates, the mixed powder impacts the cylindrical protrusion 13 and passes through the through groove 18, and the powder and the inner wall of the through groove move relatively to each other and are subjected to a strong shearing action, so that the hexagonal boron nitride 14 is subjected to interlayer stripping.
The hard particles 15 are added into the hexagonal boron nitride 14 as force intermediates, so that the friction coefficient of the mixture is increased, sliding friction force is effectively applied to layers, when the device is started, the hard particles 15 decompose the friction force of the roller 11, the built-in core rod 12 and the cylindrical protrusion 13, which is provided by the through grooves 18, to the mixed powder into a plurality of small shearing forces to act between the hexagonal boron nitride 14, and the hexagonal boron nitride 14 is subjected to the shearing force, so that the materials are delaminated into boron nitride nanosheets, and the delamination efficiency is greatly improved.
The intermediate auxiliary hard particles 15 may be SiC or other materials, and are characterized by small volume, high hardness, stable chemical properties, and low price.
Pouring the mixture after stripping from the material port 5 into a beaker 8 filled with deionized water, carrying out ultrasonic dispersion on the mixture for 2 hours by an ultrasonic oscillator 7, standing the mixture in the deionized water 8 for 8 hours, wherein the surface energies of the hard particles and the hexagonal boron nitride are similar, and the surface energies of the hard particles and the hexagonal boron nitride are different from the surface energies of the deionized water greatly, so that the hard particles and the un-stripped hexagonal boron nitride sink to the water bottom, the supernatant is stripped boron nitride nanosheets, and the supernatant is extracted and put into a drying oven to be dried for 8 hours to finally obtain the boron nitride nanosheets.
The implementation provides a boron nitride nanosheet preparation process based on a roller dry-grinding shearing effect. The operation steps are as follows:
the roller 11 is placed on the second rotary shaft 17 and the driven rotary shaft 16, and the fastening knob 3 is tightened. Rotating the roller 11 to a proper position convenient for feeding at the material inlet, opening a cover plate of the material inlet 5, and filling the hexagonal boron nitride and the hard particles into the roller 11; generally, the total volume of the materials does not exceed 2/3 which is the maximum stock volume; after the materials are loaded, closing the material opening cover plate;
starting motor I2 and motor II 6, motor I2 drives built-in plug 12 and rotates, and motor II 6 drives second pivot 17 and rotates, and second pivot 17 drives cylinder 11 and rotates, and cylinder 11 drives driven shaft 16 and rotates. The mixed powder is tumbled at a high speed between the roller 11 and the built-in core rod 12, the mixed powder and the roller 11 and the built-in core rod 12 move relatively, and the roller 11 and the built-in core rod 12 generate strong shearing and impact on the mixed powder to achieve the effects of dispersion and peeling. The outer wall of the built-in core rod 12 is uniformly provided with a plurality of rows of cylindrical bulges 13, the cylindrical bulges 13 are arranged in a staggered array along the axial direction of the built-in core rod 12, the number of the cylindrical bulges 13 in each row is four, and each cylindrical bulge 13 is provided with two through grooves 18. When the built-in core rod 12 rotates, the mixed powder impacts the cylindrical protrusion 13 and passes through the through groove 18, and the powder moves relative to the inner wall of the through groove 18 to be subjected to a strong shearing action, so that the hexagonal boron nitride is also promoted to be subjected to interlayer stripping. Meanwhile, the cylindrical protrusions 13 scatter the mixed powder in the rotating process of the built-in core rod 12, so that the mixed powder is prevented from being accumulated and agglomerated in the roller. Hard particles in the mixed powder are used as an intermediate of force, the friction force between the device and the mixed powder is decomposed into a plurality of small shearing force, and the material is induced to be efficiently peeled;
after the stripping is finished, the switches of the motor I2 and the motor II 6 are turned off, and the roller 11 and the built-in core rod 12 stop rotating. Deionized water is poured into the beaker, the roller 11 is rotated until the material port 5 is aligned with the proper position of the beaker, the material port cover plate is opened to pour out the material, and the roller can be manually rotated at a slow speed to facilitate the material to be poured out of the barrel;
the ultrasonic oscillator 7 is started, and the mixture is subjected to ultrasonic dispersion for 2 hours. Followed by standing in deionized water for 8 hours. Because the surface energy of the boron nitride nanosheet is similar to that of the deionized water, the surface energy of the hard particles and the hexagonal boron nitride is greatly different from that of the deionized water. Therefore, the hard particles and the un-stripped hexagonal boron nitride are deposited at the water bottom, and the supernatant is the stripped boron nitride nanosheet;
and (4) extracting the supernatant into a container by using a needle cylinder, and placing the container in a drying oven for high-temperature drying for 8 hours to finally prepare the boron nitride nanosheet.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. The device for preparing the boron nitride nanosheets is characterized by comprising a roller (11) and a built-in core rod (12); the built-in mandril (12) is arranged in the roller (11), and the roller (11) and the built-in mandril (12) can rotate relatively; the roller (11) is provided with a material port (5), materials are added into the roller (11) through the material port (5), and the materials are sheared and processed in the relative rotation process of the roller (11) and the built-in core rod (12).
2. The boron nitride nanosheet preparation apparatus according to claim 1, wherein a plurality of cylindrical protrusions (13) are provided on the outer side wall of the built-in mandrel (12), the cylindrical protrusions (13) are uniformly distributed along the circumferential direction of the built-in mandrel (12), and through grooves (18) are formed in the cylindrical protrusions (13) along the circumferential direction of the built-in mandrel (12).
3. The boron nitride nanosheet fabrication apparatus of claim 2, wherein the inner mandrel (12) is l long, at each interval in the axial direction of the inner mandrel (12)
And a plurality of cylindrical bulges (13) are uniformly arranged around the circumferential direction of the built-in core rod (12).
4. The boron nitride nanosheet manufacturing apparatus according to claim 3, wherein four cylindrical protrusions (13) are uniformly provided along the circumferential direction of the built-in mandrel (12) at the same axial position of the built-in mandrel (12).
5. The boron nitride nanosheet preparation apparatus according to claim 3, wherein the cylindrical protrusion (13) has a height Δ x (R-R), R is a radius of the drum (11), R is a radius of the built-in core rod (12), and Δ is a proportionality coefficient and has a value of 0.75-0.9.
6. The boron nitride nanosheet preparation apparatus according to claim 4, wherein the four cylindrical protrusions (13) at the same circumferential position on the inner core rod (12) and the four cylindrical protrusions (13) at axially adjacent positions are circumferentially staggered by 45 °.
7. The boron nitride nanosheet preparation apparatus according to claim 2, wherein the through groove (18) has an opening direction that is the same as the circumferential rotation direction of the built-in mandrel (12), and the through groove (18) has a height of
The average diameter of the hard particles (15) is 1-10 mu m, and s is a proportionality coefficient and is 50-100.
8. The boron nitride nanosheet preparation apparatus according to any one of claims 1 to 7, wherein the built-in core rod (12) is driven to rotate by the first rotating shaft (4); a second rotating shaft (17) and a driven rotating shaft (16) are arranged on the outer side of the roller (11); the second rotating shaft (17) drives the roller (11) to rotate through the friction force between the second rotating shaft and the roller (11); the roller (11) drives the driven rotating shaft (16) to rotate.
9. The apparatus for producing boron nitride nanosheets according to claim 8, wherein the drum (11) rotates in the opposite direction to the built-in mandrel (12).
10. A process method for a boron nitride nanosheet fabrication apparatus as set forth in any one of claims 1 to 7, comprising the steps of:
the method comprises the following steps: putting mixed powder of hexagonal boron nitride (14) and hard particles (15) between a roller (11) and a built-in core rod (12) through a material port (5);
step two: after the roller (11) and the built-in core rod (12) rotate, the mixed powder rotates along with the roller (11), after rising, the mixed powder is separated from the wall of the roller (11) and falls down due to gravity, the mixed powder rolls in the roller (11) at a high speed and moves relative to the roller (11) and the built-in core rod (12), and the inner wall of the roller (11) and the outer wall of the built-in core rod (12) generate strong shearing and impact on the mixed powder to achieve the effects of dispersion and peeling;
step three: and pouring the stripped mixed powder into a beaker (8) filled with deionized water from the material port (5), carrying out ultrasonic dispersion on the stripped mixed powder for 2 hours by using an ultrasonic oscillator (7), and standing for 8 hours in the beaker (8) to finally obtain the boron nitride nanosheet.
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| CN113213944A (en) * | 2021-05-24 | 2021-08-06 | 南京工程学院 | BN nanosheet toughened high-thermal-conductivity AlN ceramic substrate and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015187057A (en) * | 2014-03-13 | 2015-10-29 | 株式会社豊田中央研究所 | Boron nitride nanosheet-containing fluid dispersion, boron nitride nanosheet composite and production method thereof |
| WO2016040599A1 (en) * | 2014-09-11 | 2016-03-17 | Momentive Performance Materials Inc. | Process for exfoliation and dispersion of boron nitride |
| US20160137502A1 (en) * | 2014-11-17 | 2016-05-19 | Michigan Technological University | Boron nitride nanosheets and methods of making and using the same |
| CN106744735A (en) * | 2017-04-07 | 2017-05-31 | 厦门大学 | A kind of preparation method of two-dimensional ultrathin boron nitride nanosheet |
| US20170225233A1 (en) * | 2016-02-09 | 2017-08-10 | Aruna Zhamu | Chemical-free production of graphene-reinforced inorganic matrix composites |
| JP2017178694A (en) * | 2016-03-30 | 2017-10-05 | 国立研究開発法人産業技術総合研究所 | Manufacturing method of boron nitride nano sheet |
| CN107716002A (en) * | 2017-11-06 | 2018-02-23 | 齐鲁工业大学 | The apparatus and method that a kind of pure shear ball milling prepares hexagonal boron nitride nanosheet with supersonic synergic |
| CN108816394A (en) * | 2018-08-02 | 2018-11-16 | 浙江埃普瑞纳米材料有限公司 | A kind of nano material production bidirectional rotation ball mill grinding device |
| CN109982968A (en) * | 2016-06-14 | 2019-07-05 | 迪肯大学 | Nanometer sheet is prepared via ball milling in the presence of reactant gas |
-
2021
- 2021-01-08 CN CN202110025795.1A patent/CN112744796B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015187057A (en) * | 2014-03-13 | 2015-10-29 | 株式会社豊田中央研究所 | Boron nitride nanosheet-containing fluid dispersion, boron nitride nanosheet composite and production method thereof |
| WO2016040599A1 (en) * | 2014-09-11 | 2016-03-17 | Momentive Performance Materials Inc. | Process for exfoliation and dispersion of boron nitride |
| US20160137502A1 (en) * | 2014-11-17 | 2016-05-19 | Michigan Technological University | Boron nitride nanosheets and methods of making and using the same |
| US20170225233A1 (en) * | 2016-02-09 | 2017-08-10 | Aruna Zhamu | Chemical-free production of graphene-reinforced inorganic matrix composites |
| JP2017178694A (en) * | 2016-03-30 | 2017-10-05 | 国立研究開発法人産業技術総合研究所 | Manufacturing method of boron nitride nano sheet |
| CN109982968A (en) * | 2016-06-14 | 2019-07-05 | 迪肯大学 | Nanometer sheet is prepared via ball milling in the presence of reactant gas |
| CN106744735A (en) * | 2017-04-07 | 2017-05-31 | 厦门大学 | A kind of preparation method of two-dimensional ultrathin boron nitride nanosheet |
| CN107716002A (en) * | 2017-11-06 | 2018-02-23 | 齐鲁工业大学 | The apparatus and method that a kind of pure shear ball milling prepares hexagonal boron nitride nanosheet with supersonic synergic |
| CN108816394A (en) * | 2018-08-02 | 2018-11-16 | 浙江埃普瑞纳米材料有限公司 | A kind of nano material production bidirectional rotation ball mill grinding device |
Non-Patent Citations (1)
| Title |
|---|
| 赵迪等: "氮化硼纳米片制备方法研究进展", 功能材料 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213944A (en) * | 2021-05-24 | 2021-08-06 | 南京工程学院 | BN nanosheet toughened high-thermal-conductivity AlN ceramic substrate and preparation method thereof |
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