CN107986788A - A kind of preparation method of isostatic pressing formed graphite - Google Patents
A kind of preparation method of isostatic pressing formed graphite Download PDFInfo
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- CN107986788A CN107986788A CN201711405186.9A CN201711405186A CN107986788A CN 107986788 A CN107986788 A CN 107986788A CN 201711405186 A CN201711405186 A CN 201711405186A CN 107986788 A CN107986788 A CN 107986788A
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
Abstract
The present invention relates to a kind of preparation method of isostatic pressing formed graphite, after isostatic pressing formed graphite is uniformly mixed by raw material with the carbon black that mass fraction is 1 15%, direct isostatic pressing is made, wherein, the raw material is mixed by petroleum coke, any or its combination of pitch coke and its with mass fraction for 50 100% mesocarbon microspheres.The present invention takes full advantage of the tack of mesocarbon microspheres, binding agent need not additionally be added, it is higher to overcome the porosity caused by the volume contraction difference between filler and binding agent, even structure degree is poor, the defects of mechanical strength is relatively low, and eliminate kneading, the process such as dipping and roasting repeatedly, and addition adapts to the carbon black of mass fraction in the feed, to reduce the frictional force between raw material fine powder, so as to reduce porosity, improve bulk density and bending strength, and improve the mobility and briquettability of raw material fine powder, obtained graphite material has compact structure, uniformity is good, the advantages that high mechanical strength.
Description
Technical field
The invention belongs to graphite material field, and in particular to a kind of preparation method of isostatic pressing formed graphite.
Background technology
Graphite material has the characteristics such as high temperature resistant, corrosion-resistant, self-lubricating, is used widely in many fields.Isostatic pressed
Graphite is a kind of New graphite material to grow up in the 60's of 20th century, and compared with the common whole story, isostatic pressing formed graphite has
The features such as high intensity, high density, high-purity chemical stability height, compact and uniform structure, high temperature resistant, high conductivity, it is widely used in
The industrial circles such as metallurgy, chemical industry, space flight, electronics, machinery, nuclear energy.As global manufacturing big country and the life of maximum photovoltaic products
State is produced, China is always maintained at the isostatic pressing formed graphite demand of flood tide.In recent years, with the fast development of domestic photovoltaic industry, China
Isostatic pressing formed graphite demand expands year by year.The same period, since Chinese isostatic pressing formed graphite manufacturing enterprise technical foundation is weak, plus foreign countries
The technology blockage of enterprise, Chinese isostatic pressing formed graphite yield and quality are not lifted effectively.2011, Chinese isostatic pressing formed graphite
Demand is up to 1.8 ten thousand tons, and same period isostatic pressing formed graphite yield is only 9500 tons, and supply notch is up to 8500 tons.At present, China newly relates to
The problems such as technological reserve deficiency and unreasonable products structure of sufficient isostatic pressing formed graphite business enterprise generally existing is difficult to obtain in a short time
To solution.
Mesocarbon microspheres（MCMB）For a kind of Delanium, by the compound containing condensed-nuclei aromatics, (such as mink cell focus, coal drip
Green grass or young crops, asphalt, mid temperature pitch, secondary coal tar pitch, naphthalene, residual oil, coal tar, secondary petroleum heavy oil, carbolineum, polycyclic aromatic hydrocarbon
Deng) by thermal polycondensation react occur among phase in version be made.Mesocarbon microspheres has good chemical stability, thermostabilization
Property, electric conductivity and thermal conductivity etc., are the high-quality presomas for preparing high-performance carbon material.Also, mesocarbon microspheres has good
Self-adhesive, can directly be molded or isostatic pressing after, be sintered into high-density isotropic carbon material certainly（HDIC）.
The content of the invention
For existing issue, it is an object of the invention to provide a kind of preparation method of isostatic pressing formed graphite, including following step
Suddenly：
（1）Crushing, the screening of raw material：Raw material is crushed to the powder that average grain diameter is made and is no more than 10 μm, crosses -2000 mesh of 600 mesh
Sieve, is made raw material fine powder, wherein, the raw material is selected from any or its combination and its and the interphase of petroleum coke, pitch coke
For carbon microspheres according to certain mass than the mixture that is formulated, the mass fraction of the mesocarbon microspheres in mixture is 40-
100%；After the carbon black that mass fraction is 1-15% is added in raw material fine powder, it is milled to it and is uniformly mixed, raw mixture is made；
（2）The isostatic pressing of raw mixture：By step（1）Obtained raw mixture is preheating to 50 DEG C -100 under normal pressure
DEG C, it is loaded into rubber mold, the isostatic pressing under 100-600Mpa pressure, pressurize demoulds after 5-30 minutes, be made etc.
Hydrostatic profile base substrate；
（3）The roasting of isostatic pressing base substrate：Under inert gas shielding, by step（2）Obtained isostatic pressing base substrate with
The speed of 0.5-4.0 DEG C/h is warming up to 800-1200 DEG C, keeps the temperature 2-10 days, and roasting body is made；
（4）Roast the dipping of body：By step（3）After obtained roasting body cooling is come out of the stove, it is put into liquid bitumen and impregnates, soak
Stain pressure is 200-400Mpa, dip time 2-5h, and impregnating is made；
（5）The graphitization of impregnating：Under inert gas shielding, by step（4）Obtained impregnating is with the speed of 0.5-4.0 DEG C/h
Rate is warming up to 800-1200 DEG C, keeps the temperature 2-10 days, then is warming up to 2000-3000 DEG C with 6-12 DEG C/h, keeps the temperature 1-12 days, cools down out
After stove, isostatic pressing formed graphite is made.
Step（1）In, the crushing is selected from broken any or its combination of air-flow crushing, roller milling.
Step（1）In, the mesocarbon microspheres is the mesocarbon microspheres without charing.
Step（1）In, the average grain diameter of the raw material fine powder is 0.8-8 μm, is preferably 1-5 μm.
Step（1）In, the mass fraction of carbon black is 5-10% in the raw mixture.
Step（2）In, the isostatic pressing is isostatic cool pressing technology, i.e., at normal temperatures, using liquid as pressure medium.
Step（2）In, the pressure of the isostatic pressing is 100-600Mpa, is preferably 100-400Mpa.
Step（1）In, the ball milling carries out ball milling using planetary ball mill.
Step（3）Or step（5）In, the temperature difference is no more than 20 DEG C in the stove.
Step（4）In, the pitch is selected from mid temperature pitch, hard pitch, secondary selected from coal tar pitch and petroleum asphalt, coal tar pitch
It is any or at least two combination.
Compared with prior art, the invention has the advantages that：
1st, after isostatic pressing formed graphite of the invention is mixed by raw material and carbon black that mass fraction is 1-15% are uniform, direct isostatic pressed into
Type is made, wherein, the raw material is 40-100% by petroleum coke, any or its combination of pitch coke and its with mass fraction
Mesocarbon microspheres mix.The preparation method of isostatic pressing formed graphite of the present invention takes full advantage of the self-adhesion of mesocarbon microspheres
Property, it is not necessary to binding agent is additionally added, overcomes the porosity caused by the volume contraction difference between filler and binding agent
Higher, the defects of even structure degree is poor, mechanical strength is relatively low, and eliminate kneading, impregnate repeatedly and the process such as roast, and
Addition adapts to the carbon black of mass fraction in raw material, to reduce the frictional force between raw material fine powder, so as to reduce porosity, improves body
Product density and bending strength, and the mobility and briquettability of raw material fine powder are significantly improved, obtained graphite material is caused with structure
Close, the advantages that uniformity is good, high mechanical strength.
2nd, present invention omits kneading, repeatedly impregnate and roast etc. process, simplify manufacturing process, make use of interphase
While carbon microspheres self-characteristic, incorporation part inexpensive tradition material petroleum coke or pitch coke, significantly reduce manufacture cost.
3rd, the present invention prepares isostatic pressing formed graphite, obtained finished product using mesocarbon microspheres of the average grain diameter no more than 10 μm
Particle pushes even compact, and fractography is fine, high mechanical strength.
Brief description of the drawings
Fig. 1 is the process route chart of the present invention.
Embodiment
The present invention is described in further detail below with reference to embodiment.
Embodiment 1
（1）Petroleum coke and mesocarbon microspheres are weighed, controls petroleum coke：The mass ratio of mesocarbon microspheres is 1:1, it is placed on
In Air Grinder, it is milled through air-flow, average grain diameter is made and is 3 μm of mixed-powder, then obtained mixed-powder is crossed 1000
Mesh sieve, is made raw material fine powder；After the carbon black that mass fraction is 4% is added in raw material fine powder, it is put into ball grinder, is expert at
With the speed ball milling 2h of 260r/min on planetary ball mill, raw mixture is made；
（2）By step（1）In after obtained raw mixture is preheating to 80 DEG C, be loaded into rubber mold, isostatic pressing
The cold moudling under 200Mpa pressure, pressurize demould after 18 minutes, and isostatic pressing base substrate is made；Under nitrogen protection, incite somebody to action etc.
Hydrostatic profile base substrate is warming up to 1100 DEG C with the speed of 0.5 DEG C/h, keeps the temperature 5 days, and temperature difference requirement is obtained etc. quiet less than 20 DEG C in stove
The roasting body of molded base substrate；After the roasting body cooling of isostatic pressing base substrate is come out of the stove, it is put into liquid coal tar pitch and soaks
Stain 4h, pressure control is in 200Mpa, obtained impregnating；Argon gas protection under, impregnating is placed in graphitizing furnace, with 0.5 DEG C/
The speed of h is warming up to 1100 DEG C, keeps the temperature 2 days, is further continued for being warming up to 2500 DEG C with the speed of 60 DEG C/h, keeps the temperature 4 days, cooling is come out of the stove
Afterwards, finished product.
Embodiment 2
（1）Pitch coke and mesocarbon microspheres are weighed, controls pitch coke：The mass ratio of mesocarbon microspheres is 2:3, it is placed on
In Air Grinder, it is milled through air-flow, average grain diameter is made and is 5 μm of mixed-powder, then obtained mixed-powder is crossed into 800 mesh
Sieve, is made raw material fine powder；After the carbon black that mass fraction is 6% is added in raw material fine powder, it is put into ball grinder, in planet
With the speed ball milling 2h of 260r/min on formula ball mill, raw mixture is made；
（2）By step（1）In after obtained raw mixture is preheating to 80 DEG C, be loaded into rubber mold, isostatic pressing
The cold moudling under 200Mpa pressure, pressurize demould after twenty minutes, and isostatic pressing base substrate is made；Under nitrogen protection, incite somebody to action etc.
Hydrostatic profile base substrate is warming up to 1100 DEG C with the speed of 1.0 DEG C/h, keeps the temperature 5 days, and temperature difference requirement is obtained etc. quiet less than 20 DEG C in stove
The roasting body of molded base substrate；After the roasting body cooling of isostatic pressing base substrate is come out of the stove, it is put into 120 DEG C of pitch and soaks
Stain 4h, pressure control is in 200Mpa, obtained impregnating；Argon gas protection under, impregnating is placed in graphitizing furnace, with 1.0 DEG C/
The heating rate of h is warming up to 1100 DEG C, keeps the temperature 2 days, is further continued for being warming up to 2500 DEG C with the speed of 60 DEG C/h, keeps the temperature 4 days, cooling
After coming out of the stove, finished product.
Embodiment 3
（1）Pitch coke and mesocarbon microspheres are weighed, controls pitch coke：The mass ratio of mesocarbon microspheres is 1:3, it is placed on
In Air Grinder, it is milled through air-flow, average grain diameter is made and is 6 μm of mixed-powder, then obtained mixed-powder is crossed into 800 mesh
Sieve, is made raw material fine powder；After the carbon black that mass fraction is 8% is added in raw material fine powder, it is put into ball grinder, in planet
With the speed ball milling 2h of 260r/min on formula ball mill, raw mixture is made；
（2）By step（1）In after obtained raw mixture is preheating to 80 DEG C, be loaded into rubber mold, isostatic pressing
The cold moudling under 240Mpa pressure, pressurize demould after 18 minutes, and isostatic pressing base substrate is made；Under nitrogen protection, incite somebody to action etc.
Hydrostatic profile base substrate is warming up to 1100 DEG C with the speed of 1.0 DEG C/h, keeps the temperature 5 days, and temperature difference requirement is obtained etc. quiet less than 20 DEG C in stove
The roasting body of molded base substrate；After the roasting body cooling of isostatic pressing base substrate is come out of the stove, 120 DEG C of liquid bitumen is put into
Middle dipping 4h, pressure control is in 200Mpa, obtained impregnating；Under argon gas protection, obtained isostatic pressing base substrate is placed in stone
In Mo Hualu, 1100 DEG C are warming up to the speed of 1.0 DEG C/h, 2 days is kept the temperature, is further continued for being warming up to 2800 with the speed of 60 DEG C/h
DEG C, 4 days are kept the temperature, after cooling is come out of the stove, finished product.
Embodiment 4
（1）Petroleum coke and mesocarbon microspheres are weighed, controls petroleum coke：The mass ratio of mesocarbon microspheres is 1:3, it is placed on
In Air Grinder, it is milled through air-flow, average grain diameter is made and is 2 μm of mixed-powder, then obtained mixed-powder is crossed 1200
Mesh sieve, is made raw material fine powder；After the carbon black that mass fraction is 8% is added in raw material fine powder, it is put into ball grinder, is expert at
With the speed ball milling 2h of 260r/min on planetary ball mill, raw mixture is made；
（2）By step（1）In after obtained raw mixture is preheating to 80 DEG C, be loaded into rubber mold, isostatic pressing
The cold moudling under 280Mpa pressure, pressurize demould after 15 minutes, and isostatic pressing base substrate is made；Under nitrogen protection, incite somebody to action etc.
Hydrostatic profile base substrate is warming up to 1100 DEG C with the speed of 1.5 DEG C/h, keeps the temperature 5 days, and temperature difference requirement is obtained etc. quiet less than 20 DEG C in stove
The roasting body of molded base substrate；After the roasting body cooling of isostatic pressing base substrate is come out of the stove, 120 DEG C of liquid bitumen is put into
Middle dipping 4h, pressure control is in 200Mpa, obtained impregnating；Under argon gas protection, impregnating is placed in graphitizing furnace, with
The speed of 1.5 DEG C/h is warming up to 1100 DEG C, keeps the temperature 2 days, is further continued for being warming up to 2800 DEG C with the speed of 60 DEG C/h, keeps the temperature 4 days, cold
But after coming out of the stove, finished product.
Embodiment 5
（1）Mesocarbon microspheres powder is placed in vertical roll grinder and is crushed, the material powder that average grain diameter is 3 μm is made, will
Material powder after broken crosses 1200 mesh sieves, and raw material fine powder is made；The carbon black that mass fraction is 10% is added in raw material fine powder
Afterwards, it is put into ball grinder, with the speed ball milling 2h of 260r/min on planetary ball mill, raw mixture is made；
（2）By step（1）In after obtained raw mixture is preheating to 80 DEG C, be loaded into rubber mold, isostatic pressing
The cold moudling under 250Mpa pressure, pressurize demould after 15 minutes, and isostatic pressing base substrate is made；Under nitrogen protection, incite somebody to action etc.
Hydrostatic profile base substrate is warming up to 1100 DEG C with the speed of 1.5 DEG C/h, keeps the temperature 5 days, and temperature difference requirement is obtained etc. quiet less than 20 DEG C in stove
The roasting body of molded base substrate；After the roasting body cooling of isostatic pressing base substrate is come out of the stove, it is put into liquid coal tar pitch and soaks
Stain 4h, pressure control is in 200Mpa, obtained impregnating；Argon gas protection under, impregnating is placed in graphitizing furnace, with 1.5 DEG C/
The speed of h is warming up to 1100 DEG C, keeps the temperature 2 days, is further continued for being warming up to 2800 DEG C with the speed of 60 DEG C/h, keeps the temperature 4 days, cooling is come out of the stove
Afterwards, finished product.
Embodiment 6
（1）Mesocarbon microspheres powder is placed in vertical roll grinder and is crushed, the raw material powder that average grain diameter is 4 μm is made
End, the material powder after crushing cross 1000 mesh sieves, raw material fine powder are made；The charcoal that mass fraction is 6% is added in raw material fine powder
After black, it is put into ball grinder, with the speed ball milling 2h of 260r/min on planetary ball mill, raw mixture is made；
（2）Isostatic pressing
By step（1）In after obtained raw mixture is preheating to 80 DEG C, be loaded into rubber mold, isostatic pressing exists
Cold moudling under 280Mpa pressure, pressurize demould after 15 minutes, and isostatic pressing base substrate is made；Under nitrogen protection, will wait quiet
Base substrate after molded is warming up to 1100 DEG C with the speed of 1.5 DEG C/h, keeps the temperature 5 days, and temperature difference requirement is less than 20 DEG C in stove, be made etc.
The roasting body of hydrostatic profile base substrate；After the roasting body cooling of isostatic pressing base substrate is come out of the stove, it is put into liquid coal tar pitch
4h is impregnated, pressure control is in 200Mpa, obtained impregnating；Under argon gas protection, impregnating is placed in graphitizing furnace, with 1.5
DEG C/speed of h is warming up to 1100 DEG C, and 2 days are kept the temperature, is further continued for being warming up to 2800 DEG C with the speed of 60 DEG C/h, keeps the temperature 4 days, cooling
After coming out of the stove, finished product.
The test result of isostatic pressing formed graphite prepared by embodiment 1-6 is as shown in table 1.
The test result of 1 isostatic pressing formed graphite of table
Compression molding is suppressed for one-way or bi-directional pressure, and the frictional force suppressed between powder and mould is larger, and the compacting of pressure edge
Direction can produce the pressure loss, make the Density inhomogeneity of base substrate each several part.And during isostatic pressing, the pressure of liquid medium transmission
It is equal in all directions.Elastic mould is when being subject to medium pressure liquid, the powder in the displacement transfer to mould of generation
The frictional force of material, powder and mold wall is small, and base substrate uniform force, Density Distribution is homogeneous, and properties of product are much improved.
By table 1 as it can be seen that due to the self-adhesive of mesocarbon microspheres, binding agent need not be added in preparation process, and save
Kneading, the repeatedly process such as dipping and roasting have been omited, has simplified manufacturing process, and add in raw mixture or mesocarbon microspheres
After the carbon black for entering certain mass fraction, ball milling is uniformly mixed it, and heats the pre-heat treatment, reduces the frictional force between particle,
The bulk density of base substrate is improved, significantly improves the compression strength of base substrate.Addition adapts to the carbon black of mass fraction in the feed, reduces
Frictional force between raw material fine powder, so as to reduce porosity, improves bulk density and bending strength, obtained isostatic pressing formed graphite
Have the advantages that compact structure, uniformity be good, high mechanical strength.
Applicant states that the present invention illustrates the method detailed of the present invention by embodiment described above, but the present invention is simultaneously
Above-mentioned method detailed is not limited to, could be implemented this means that the present invention has to rely on above-mentioned method detailed.Technical field
Technical staff it will be clearly understood that any improvement in the present invention, to the equivalence replacement and auxiliary element of each raw material of product of the present invention
Addition, the selection etc. of concrete mode, all fall within protection scope of the present invention and the open scope.
Claims (7)
1. a kind of preparation method of isostatic pressing formed graphite, it is characterised in that the described method comprises the following steps：
（1）Crushing, the screening of raw material：Raw material is crushed to the powder that average grain diameter is made and is no more than 10 μm, crosses -2000 mesh of 600 mesh
Sieve, is made raw material fine powder, wherein, the raw material is selected from any or its combination and its and the interphase of petroleum coke, pitch coke
For carbon microspheres according to certain mass than the mixture that is formulated, the mass fraction of the mesocarbon microspheres in mixture is 40-
100%；After the carbon black that mass fraction is 1-15% is added in raw material fine powder, it is milled to it and is uniformly mixed, raw mixture is made；
（2）The isostatic pressing of raw mixture：By step（1）Obtained raw mixture is preheating to 50 DEG C -100 under normal pressure
DEG C, it is loaded into rubber mold, the isostatic pressing under 100-600Mpa pressure, pressurize demoulds after 5-30 minutes, be made etc.
Hydrostatic profile base substrate；
（3）The roasting of isostatic pressing base substrate：Under inert gas shielding, by step（2）Obtained isostatic pressing base substrate with
The speed of 0.5-4.0 DEG C/h is warming up to 800-1200 DEG C, keeps the temperature 2-10 days, and roasting body is made；
（4）Roast the dipping of body：By step（3）After obtained roasting body cooling is come out of the stove, it is put into liquid bitumen and impregnates, soak
Stain pressure is 200-400Mpa, dip time 2-5h, and impregnating is made；
（5）The graphitization of impregnating：Under inert gas shielding, by step（4）Obtained impregnating is with the speed of 0.5-4.0 DEG C/h
Rate is warming up to 800-1200 DEG C, keeps the temperature 2-10 days, then is warming up to 2000-3000 DEG C with 6-12 DEG C/h, keeps the temperature 1-12 days, cools down out
After stove, isostatic pressing formed graphite is made.
2. preparation method according to claim 1, it is characterised in that the step（1）In crushing be selected from air-flow crushing,
Broken any or its combination of roller milling.
3. preparation method according to claim 1, it is characterised in that the step（1）In mesocarbon microspheres for not
By the mesocarbon microspheres of charing.
4. preparation method according to claim 1, it is characterised in that the step（1）In raw material fine powder average grain
Footpath is 0.8-8 μm, is preferably 1-5 μm.
5. preparation method according to claim 1, it is characterised in that the pressure of the isostatic pressing is 100-
600Mpa, is preferably 100-400Mpa.
6. preparation method according to claim 1, it is characterised in that the step（4）In pitch be selected from mid temperature pitch,
Hard pitch, secondary selected from coal tar pitch and petroleum asphalt, coal tar pitch any or at least two combination.
7. preparation method according to claim 1, it is characterised in that the step（3）In stove in the temperature difference be no more than 20
℃。
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| CN109319775A (en) * | 2018-11-19 | 2019-02-12 | 成都炭素有限责任公司 | A kind of preparation method of short route high-density high-strength isotropic graphite |
| CN111362698A (en) * | 2020-04-28 | 2020-07-03 | 湖南大学 | Novel isotropic nuclear-grade graphite material and preparation method thereof |
| CN113999011A (en) * | 2021-12-14 | 2022-02-01 | 中钢集团南京新材料研究院有限公司 | Short-process graphite preparation method |
| CN115215656A (en) * | 2022-08-11 | 2022-10-21 | 中钢集团南京新材料研究院有限公司 | Preparation method of binder-free high-density graphite material and prepared graphite material |
| CN116813349A (en) * | 2023-07-26 | 2023-09-29 | 安康太伦新材料有限公司 | Graphite box plate material for negative electrode material graphitized box furnace and preparation method thereof |
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2017
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| CN109319775A (en) * | 2018-11-19 | 2019-02-12 | 成都炭素有限责任公司 | A kind of preparation method of short route high-density high-strength isotropic graphite |
| CN111362698A (en) * | 2020-04-28 | 2020-07-03 | 湖南大学 | Novel isotropic nuclear-grade graphite material and preparation method thereof |
| CN113999011A (en) * | 2021-12-14 | 2022-02-01 | 中钢集团南京新材料研究院有限公司 | Short-process graphite preparation method |
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Application publication date: 20180504 |