CN108467268A - A kind of modified form graphite sheet and its manufacturing method - Google Patents
A kind of modified form graphite sheet and its manufacturing method Download PDFInfo
- Publication number
- CN108467268A CN108467268A CN201810400602.4A CN201810400602A CN108467268A CN 108467268 A CN108467268 A CN 108467268A CN 201810400602 A CN201810400602 A CN 201810400602A CN 108467268 A CN108467268 A CN 108467268A
- Authority
- CN
- China
- Prior art keywords
- powder
- natural flake
- iron alloy
- flake graphite
- graphite sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/64—Burning or sintering processes
- C04B35/645—Pressure sintering
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/40—Metallic constituents or additives not added as binding phase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to field of powder metallurgy.A kind of modified form graphite sheet and its manufacturing method are disclosed, is made by following raw material by weight percentage：Mid temperature pitch powder, forming agent, iron alloy powder and natural flake graphite powder, wherein, the dosage of the natural flake graphite powder is 80% 92%, the particle size range of the natural flake graphite powder is 0.1 50 microns, by using aforesaid way, at high temperature under high pressure, interreaction between natural flake graphite powder, mid temperature pitch powder, forming agent and iron alloy powder, the substance mid temperature pitch powder and iron alloy powder of addition play the role of binder and catalyst, the integral strength of graphite sheet can be improved, physical and chemical performance index can meet the needs of different field.
Description
【Technical field】
The invention belongs to field of powder metallurgy more particularly to a kind of modified form graphite sheet and its manufacturing methods.
【Background technology】
Graphite is due to its special structure, and with high temperature resistant, conduction, heat conductivility is good, greasy property is good, plasticity is strong
With the excellent performance of good thermal shock, graphite industrially uses extremely extensively, and almost each industry can be used.
Since the excellent performance of graphite itself is often processed to graphite sheet, graphite sheet is widely used in electronics, smelting
Gold, plating, chemical industry, the every field such as steel and environment protection sewage processing, but needed by repeatedly leaching since conventional graphite produces
The technique of roasting, manufacturing process is very complicated, and the general production cycle is up to 6 months, and production cost is higher, and environment in production process
Pollution is also than more serious.The need of different field cannot be met using the physical and chemical performance of the graphite sheet of artificial graphite manufacture
It wants.
In view of this, providing a kind of better graphite sheet of physical and chemical performance and its manufacturing method is actually necessary.
【Invention content】
In order to solve the above technical problems, providing a kind of better graphite sheet of physical and chemical performance and its manufacturing method.
In order to solve the above technical problems, the embodiment of the present invention provides following technical scheme：
In a first aspect, the embodiment of the present invention provides a kind of modified form graphite sheet, by it is following by weight percentage
Raw material composition is made：Mid temperature pitch powder, forming agent, iron alloy powder and natural flake graphite powder, wherein the natural scale
The dosage of graphite powder is 80%-92%, and the particle size range of the natural flake graphite powder is 0.01-5 microns.
Preferably, the dosage of the natural flake graphite powder is 83%-88%.
Preferably, the granularity of the natural flake graphite powder is 1 micron, the weight of the iron alloy powder and mid temperature pitch powder
Than being 1:20.
Preferably, the granularity of the natural flake graphite powder is 3 microns, the weight of the iron alloy powder and mid temperature pitch powder
Than 1:10.
Preferably, the granularity of the natural flake graphite powder is 5 microns, the weight of the iron alloy powder and mid temperature pitch powder
Than being 1:8.
Preferably, the granularity of the natural flake graphite powder is 7 microns, the weight of the iron alloy powder and mid temperature pitch powder
Than being 1:2.
Preferably, the granularity of the natural flake graphite powder is 30 microns, the weight of the iron alloy powder and mid temperature pitch powder
Amount is than being 2:3.
Preferably, the granularity of the natural flake graphite powder is 50 microns, the weight of the iron alloy powder and mid temperature pitch powder
Amount is than being 5:8.
Second aspect, the embodiment of the present invention provide a kind of manufacturing method of graphite sheet, including by raw material：Asphalt powder,
Forming agent, iron alloy powder and natural flake graphite powder, four are sufficiently mixed, and column is pressed into a mold with four-column press,
It is fitted into after dewaxing in composite pyrophyllite and is sintered using cubic hinge press increasing temperature and pressure, taken out after pressure release.
Preferably, the increasing temperature and pressure, which is sintered, includes：Pressure line is boosted into 60Mpa, 1-3 points of pressurize for 1-5 minutes first
It begins to warm up after clock, the power of heater is raised to 10 kilowatts, after heat preservation 2-40 minutes, then power risen at a slow speed for 2-35 minutes
To 18 kilowatts, constant temperature stops heat supply in 5-55 minutes, and power line is restored to 0, and then pressure release after 5-20 minutes, pressure line are restored to 0,
Sintering overall process is calculated according to the time of heating, 9-130 minutes total.
The advantageous effect of the embodiment of the present invention is：The case where being different from the prior art, the embodiment of the present invention prepare graphite cake
The raw material of material are made of mid temperature pitch powder, forming agent, iron alloy powder and natural flake graphite powder, at high temperature under high pressure, day
Interreaction between right crystalline graphite powder, mid temperature pitch powder, forming agent and iron alloy powder, the substance mid temperature pitch powder and iron of addition
Alloyed powder plays the role of binder and catalyst, and the integral strength of graphite sheet, physical and chemical performance index energy can be improved
Meet the needs of different field.
【Description of the drawings】
Fig. 1 is the artwork that increasing temperature and pressure is sintered in manufacture graphite sheet method provided in an embodiment of the present invention.
【Specific implementation mode】
It is with reference to the accompanying drawings and embodiments, right in order to make the purpose of the present invention, method scheme and advantage be more clearly understood
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Carbon materials used in the present invention are natural flake graphite powder, and the bulk density of natural flake graphite is 1.68g/
cm3, average particle size is 1-2 μm, bending strength 50Mpa, compression strength 80Mpa, Shore Hardness 50-60, is thermally expanded
Coefficient is 4.36EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.It is sintered natural flake graphite system by high temperature, high-pressure sinter technology
Graphite sheet is made, the physics of the graphite sheet produced, chemical property are better than conventional artificial's graphite (three leachings, four roasting).Production cycle
It was foreshortened in several days by traditional 6 months or so, environmental pollution and time cost are greatly lowered, and economic benefit is apparent.
The embodiment of the present invention provides a kind of modified form graphite sheet, is made of and is made following raw material：Mid temperature pitch powder,
Forming agent, iron alloy powder and natural flake graphite powder.
The dosage of the raw material is by weight percentage below.
Asphalt powder is that the chemical treatments such as, emulsification sulfonated by bitumen are formed, it is a kind of anionic high polymer,
Its molecular structure is carbon-carbon bond and carbon-sulfur bond, and bond energy is stronger, therefore temperature resistance is higher；Asphalt powder be divided into soft pitch powder, in
Warm asphalt powder and hard pitch powder use mid temperature pitch powder in the embodiment of the present invention, and purity 98%, mid temperature pitch powder is in stone
It is used as binder in the manufacturing process of black plank, mid temperature pitch powder uses 80-100 mesh.
Optionally, the dosage of mid temperature pitch powder is 2%-10%, and preferably the dosage of mid temperature pitch powder is 4%-8%, and is passed
The dosage that the pitch in graphite sheet method is made in controlling is typically larger than 25%, avoids the energy consumption of high temperature graphitization.
Iron alloy powder is the intermediate alloy of iron and one or more of element compositions, is mainly used for smelting iron and steel, can also take off
Oxygen agent, catalyst, the purity of iron alloy powder is 99% in the embodiment of the present invention, and the particle size range of iron alloy powder is that 10-100 is micro-
Rice；Wherein, the dosage of iron alloy powder is 0.1%-5%, and preferably the dosage of iron alloy powder is 0.2%-4%.
Natural flake graphite powder is raw material used in manufacture graphite sheet, and the particle size range of natural flake graphite powder is
0.1-50 microns.
Varigrained natural flake graphite is added by certain weight ratio in a certain proportion of asphalt powder and iron alloy powder
Powder, the percentage that natural flake graphite powder accounts for the manufacture raw materials used total amount of graphite sheet are：80%-92%, wherein preferably natural
The percentage 83%-88% of crystalline graphite powder.
Forming agent can be one or more in polyethylene, paraffin, phenolic resin, stearic acid and water；Wherein, forming agent
Dosage is 2%-10%, and preferably the dosage of forming agent is 4-7%.
The embodiment of the present invention also provides a kind of manufacturing method of graphite sheet, including：By mid temperature pitch powder, forming agent, iron
After alloyed powder and natural flake graphite powder are sufficiently mixed, it is pressed into bulk in a mold with four-column press, being taken out after pressure release should
Carbon test block obtains the graphite sheet of the embodiment of the present invention.
Cubic hinge press is using the self-produced 6 × 3000T press of Shaoguan Saipu Superhard Material Technology Co., Ltd..
The embodiment of the present invention obtains the graphite sheet of the embodiment of the present invention, performance using the manufacture of cubic hinge press hot pressed sintering
Better than conventional artificial's graphite (three leachings, four roasting).
Press is sintered, and abscissa is time shaft in figure, and ordinate is pressure, power qualitative representation.First by pressure
Line boosts to 60Mpa for 1-5 minutes, and pressurize is begun to warm up after 1-3 minutes, the power of heater was raised to 10 kilowatts in 10 seconds, protected
After 2-40 minutes warm, then power is raised at a slow speed 18 kilowatts for 2-35 minutes, constant temperature stops heat supply in 5-55 minutes, and power line is restored to
0, then pressure release after 5-20 minutes, pressure line is restored to 0, and sintering overall process is calculated according to the time of heating, 9-130 minutes total.
Carbon test block is taken out after pressure release, and carbon test block is placed into electric furnace and is heated to 1600-2200 degree tempers, test examination
It is 1.70g/cm to test block density2, bending strength is not less than 50Mpa, and compression strength is not less than 90Mpa；Shore Hardness is more than 65, heat
The coefficient of expansion is 4.30-4.50EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.Below by way of specific embodiment and comparative example
The embodiment of the present invention is illustrated.
Embodiment 1
Claim 4000 grams 1 micron of natural flake graphite powder；Claim 200 gram of 80 mesh mid temperature pitch powder (purity 98.0%)；Claim
300 grams of forming agents；Claim 10 grams 10 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, and are pressed in a mold with four-column press
Bulk is made, is fitted into after 600 degree of degummings in 3000 tons of special composite pyrophyllites of two-sided pressure full-automatic heating press, using 3000 tons
Two-sided pressure full-automatic heating press hot pressed sintering, as shown in Figure 1 method carry out hot pressed sintering, in figure, abscissa is time, ordinate
It is pressure and heating power, equal qualitative representation.Pressure line is boosted into 60Mpa for 1 minute first, pressurize started to add after 2 minutes
The power of heater is raised to 10 kilowatts by heat, and power is raised at a slow speed 18 kilowatts for 5 minutes by heat preservation again after ten minutes, and constant temperature 15 divides
Clock stops heat supply, and power line is restored to 0, then pressure release after five minutes, and pressure line is restored to 0, sintering overall process according to heating when
Between calculate, totally 30 minutes.The carbon test block is taken out after pressure release, which is placed into electric furnace and is heated to 1800 degree
Temper.
After cooling, testing experiment block density:1.68g/cm2, bending strength is not less than 50MPa, and compression strength is not less than
80MPa；Shore Hardness is more than 55, coefficient of thermal expansion 4.34EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.
Embodiment 2
Claim 4000 grams 3 microns of natural flake graphite powder；Claim 200 gram of 100 mesh mid temperature pitch powder (purity 98.0%)；Claim
300 grams of forming agents；Claim 20 grams 10 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, and are pressed in a mold with four-column press
Bulk is made, it is in the special composite pyrophyllite of 3000 tons of two-sided pressure full-automatic heating press, using 3000 to be fitted into after 600 degree of degummings
The two-sided pressure full-automatic heating press of ton carries out hot pressed sintering, and flow takes out the carbon test block with embodiment 1 after pressure release, by the carbon
Plain test block, which is placed into electric furnace, is heated to 2000 degree of tempers.
After cooling, testing experiment block density:1.71g/cm2, bending strength is not less than 60MPa, and compression strength is not less than
80Mpa；Shore Hardness is more than 50, coefficient of thermal expansion 4.36EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.
Embodiment 3
Claim 10000 grams 5 microns of natural flake graphite powder；Claim 800 gram of 100 mesh mid temperature pitch powder (purity 98.0%)；
Claim 500 grams of forming agents；Claim 100 grams 20 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, in a mold with four-column press
It is pressed into bulk, is fitted into after 800 degree of degummings in the special composite pyrophyllite of 3000 tons of two-sided pressure full-automatic heating press, to use
3000 tons of two-sided pressure full-automatic heating press carry out hot pressed sintering flow with embodiment 1, the difference is that sintering overall process is 60
Minute, the carbon test block is taken out after pressure release, which is placed into electric furnace and is heated to 2200 degree of tempers.
After cooling, testing experiment block density:1.76g/cm2, bending strength is not less than 50MPa, and compression strength is not less than
80MPa；Shore Hardness is more than 60, coefficient of thermal expansion 4.36EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.
Embodiment 4
Claim 20000 grams 7 microns of natural flake graphite powder；Claim 2000 gram of 100 mesh mid temperature pitch powder (purity 98.5%)；
Claim 1000 grams of forming agents；Claim 1000 grams 100 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, with four-column press in mould
It is pressed into bulk in tool, is fitted into after 800 degree of degummings in the special composite pyrophyllite of 3000 tons of two-sided pressure full-automatic heating press, to adopt
Hot pressed sintering is carried out with 3000 tons of two-sided pressure full-automatic heating press, flow is with embodiment 1, the difference is that sintering overall process is
110 minutes, the carbon test block is taken out after pressure release, which is placed into electric furnace and is heated at 2200 degree of tempering
Reason.
After cooling, testing experiment block density:1.71g/cm2, bending strength is not less than 60MPa, and compression strength is not less than
90Mpa；Shore Hardness is more than 65, coefficient of thermal expansion 4.38EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.
Embodiment 5
Claim 1000 grams 30 microns of natural flake graphite powder；Claim 60 gram of 100 mesh mid temperature pitch powder (purity 98.0%)；Claim
60 grams of forming agents；Claim 40 grams 50 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, and are suppressed in a mold with four-column press
At bulk, it is in the special composite pyrophyllite of 3000 tons of two-sided pressure full-automatic heating press, using 3000 tons to be fitted into after 600 degree of degummings
Two-sided pressure full-automatic heating press carries out hot pressed sintering, and flow is with embodiment 1, the difference is that sintering overall process is 10 minutes,
The carbon test block is taken out after pressure release, which is placed into electric furnace and is heated to 2200 degree of tempers.
After cooling, testing experiment block density:1.68g/cm2, bending strength is not less than 50MPa, and compression strength is not less than
80MPa；Shore Hardness is more than 50, coefficient of thermal expansion 4.34EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.
Embodiment 6
Claim 1000 grams 50 microns of natural flake graphite powder；Claim 80 gram of 100 mesh mid temperature pitch powder (purity 98.0%)；Claim
50 grams of forming agents；Claim 50 grams 50 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, and are suppressed in a mold with four-column press
At bulk, it is in the special composite pyrophyllite of 3000 tons of two-sided pressure full-automatic heating press, using 3000 tons to be fitted into after 600 degree of degummings
Two-sided pressure full-automatic heating press carries out hot pressed sintering, and flow is with embodiment 1, the difference is that sintering overall process is 10 minutes,
The carbon test block is taken out after pressure release, which is placed into electric furnace and is heated to 2200 degree of tempers.
After cooling, testing experiment block density:1.70g/cm2, bending strength is not less than 50MPa, and compression strength is not less than
80MPa；Shore Hardness is more than 50, coefficient of thermal expansion 4.32EX10-6/ DEG C, thermal conductivity is 100W/m DEG C.
Comparative example 1
Claim 4000 grams 1 micron of artificial graphite powder；Claim 200 gram of 80 mesh mid temperature pitch powder (purity 98.0%)；Claim 300 grams
Forming agent；Claim 10 grams 10 microns of iron alloy powder (99.0%)；Four are sufficiently mixed, and hot pressing burning is carried out using cubic hinge press
Knot, flow is the same as embodiment 1.
The carbon test block, testing experiment block density are taken out after pressure release:1.85g/cm2, bending strength is less than 50MPa, anti-
Compressive Strength is less than 60MPa；Shore Hardness is less than 50, and coefficient of thermal expansion is that can not survey, and thermal conductivity is that can not survey.
Comparative example 2
Claim 4000 grams 3 microns of artificial graphite powder；Claim 300 grams of forming agents；Claim 20 grams 10 microns of high-purity iron alloy powder
(99.0%)；Four are sufficiently mixed, and carry out hot pressed sintering using cubic hinge press, flow is the same as embodiment 1.
The carbon materials, testing experiment block density are taken out after pressure release:1.87g/cm2, bending strength is less than 50MPa, resistance to compression
Intensity is less than 60MPa；Shore Hardness is less than 50, and coefficient of thermal expansion is that can not survey, and thermal conductivity is that can not survey.
Comparative example 1 directly prepares graphite sheet using artificial graphite, the use artificial graphite of comparative example 2 powder,
Pitch, forming agent and iron alloy powder manufacture graphite sheet, and bending strength is not high in the test data of two groups of carbon test block
In 50MPa, compression strength is not higher than 50Mpa, hence it is evident that is less than embodiment 1-6, in addition, preparing graphite cake using artificial graphite
Material, production cost and at production the period be above embodiment 1-6, the pollution using artificial preparing graphite plank to environment
It is apparently higher than embodiment 1-6.
By above-described embodiment it is found that by the way that natural flake graphite powder is added in the preparation process of graphite sheet, can show
Writing improves the physics of graphite sheet, chemical property, because at high temperature under high pressure, natural flake graphite powder, mid temperature pitch powder, forming agent
And interreaction between iron alloy powder, the substance mid temperature pitch powder and iron alloy powder of addition play the work of binder and catalyst
With the integral strength of graphite sheet can be improved, physical and chemical performance index can meet the needs of different field.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of modified form graphite sheet, which is characterized in that it is made of following raw material by weight percentage and is made：In
Warm asphalt powder, forming agent, iron alloy powder and natural flake graphite powder, wherein the dosage of the natural flake graphite powder is
The particle size range of 80%-92%, the natural flake graphite powder are 0.1-50 microns.
2. graphite sheet according to claim 1, which is characterized in that the dosage of the natural flake graphite powder is 83%-
88%.
3. graphite sheet according to claim 1, which is characterized in that the granularity of the natural flake graphite powder is 1 micron,
The weight ratio of the iron alloy powder and mid temperature pitch powder is 1:20.
4. graphite sheet according to claim 1, which is characterized in that the granularity of the natural flake graphite powder is 3 microns,
The weight ratio 1 of the iron alloy powder and mid temperature pitch powder:10.
5. graphite sheet according to claim 1, which is characterized in that the granularity of the natural flake graphite powder is 5 microns,
The weight ratio of the iron alloy powder and mid temperature pitch powder is 1:8.
6. graphite sheet according to claim 1, which is characterized in that the granularity of the natural flake graphite powder is 7 microns,
The weight ratio of the iron alloy powder and mid temperature pitch powder is 1:2.
7. graphite sheet according to claim 1, which is characterized in that the granularity of the natural flake graphite powder is 30 micro-
The weight ratio of rice, the iron alloy powder and mid temperature pitch powder is 2:3.
8. graphite sheet according to claim 1, which is characterized in that the granularity of the natural flake graphite powder is 50 micro-
The weight ratio of rice, the iron alloy powder and mid temperature pitch powder is 5:8.
9. a kind of manufacturing method of graphite sheet, which is characterized in that including by raw material：Asphalt powder, forming agent, iron alloy powder with
And natural flake graphite powder, four are sufficiently mixed, and are pressed into column in a mold with four-column press, it is cured that compound leaf is packed into after dewaxing
It is sintered using cubic hinge press increasing temperature and pressure in stone, is taken out after pressure release.
10. manufacturing method according to claim 9, which is characterized in that the increasing temperature and pressure, which is sintered, includes：First by pressure
Line boosts to 60Mpa for 1-5 minutes, and pressurize is begun to warm up after 1-3 minutes, and the power of heater is raised to 10 kilowatts, keeps the temperature 2-
After forty minutes, then by power it is raised within 2-35 minutes 18 kilowatts at a slow speed, constant temperature stops heat supply in 5-55 minutes, and power line is restored to 0, connects
Pressure release after 5-20 minutes, pressure line are restored to 0, and sintering overall process is calculated according to the time of heating, 9-130 minutes total.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400602.4A CN108467268B (en) | 2018-04-28 | 2018-04-28 | Improved graphite plate and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400602.4A CN108467268B (en) | 2018-04-28 | 2018-04-28 | Improved graphite plate and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108467268A true CN108467268A (en) | 2018-08-31 |
| CN108467268B CN108467268B (en) | 2021-11-26 |
Family
ID=63263892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810400602.4A Active CN108467268B (en) | 2018-04-28 | 2018-04-28 | Improved graphite plate and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108467268B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604748A (en) * | 2009-07-03 | 2009-12-16 | 中南大学 | The low temperature pyrogenation graphite covered by asphalt prepares the method for high multiplying power lithium ion capacitance cell negative electrode material |
| CN101844923A (en) * | 2010-05-24 | 2010-09-29 | 哈尔滨工程大学 | Steering gear graphite plate for automobile fuel pump and preparation method thereof |
| CN103554861A (en) * | 2013-11-04 | 2014-02-05 | 哈尔滨市都邦节能科技有限公司 | Graphene high polymer plate as well as preparation method thereof |
| CN104647864A (en) * | 2015-01-01 | 2015-05-27 | 三峡大学 | Preparation method of graphite composite plank |
| CN105098184A (en) * | 2015-09-25 | 2015-11-25 | 深圳市贝特瑞新能源材料股份有限公司 | Preparation method of composite graphite, composite graphite and lithium ion battery |
-
2018
- 2018-04-28 CN CN201810400602.4A patent/CN108467268B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604748A (en) * | 2009-07-03 | 2009-12-16 | 中南大学 | The low temperature pyrogenation graphite covered by asphalt prepares the method for high multiplying power lithium ion capacitance cell negative electrode material |
| CN101844923A (en) * | 2010-05-24 | 2010-09-29 | 哈尔滨工程大学 | Steering gear graphite plate for automobile fuel pump and preparation method thereof |
| CN103554861A (en) * | 2013-11-04 | 2014-02-05 | 哈尔滨市都邦节能科技有限公司 | Graphene high polymer plate as well as preparation method thereof |
| CN104647864A (en) * | 2015-01-01 | 2015-05-27 | 三峡大学 | Preparation method of graphite composite plank |
| CN105098184A (en) * | 2015-09-25 | 2015-11-25 | 深圳市贝特瑞新能源材料股份有限公司 | Preparation method of composite graphite, composite graphite and lithium ion battery |
Non-Patent Citations (1)
| Title |
|---|
| 蒋文忠: "《炭石墨制品及其应用》", 31 March 2017, 冶金工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108467268B (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103572087B (en) | The preparation method of boron carbide particles reinforced aluminum matrix composites | |
| CN102701771B (en) | Preparation method for SiBNC fiber/SiBNC composite material | |
| CN104630526A (en) | Method for preparing carbon nano-tube reinforced copper base composite material by using microwave sintering | |
| CN110172604A (en) | A kind of preparation method of in-situ authigenic micro-nano granules enhancing TiAl based composites | |
| CN106187259A (en) | Composite ceramic cutting tool that a kind of graphene nanometer sheet is toughness reinforcing and microwave preparation technology thereof | |
| Zhang et al. | Densification behaviour and mechanical properties of B4C–SiC intergranular/intragranular nanocomposites fabricated through spark plasma sintering assisted by mechanochemistry | |
| CN104387073B (en) | The method of ultra-fine high tenacity thyrite is manufactured based on reaction sintering | |
| CN101665251B (en) | Preparing method of isotropic graphite | |
| Wang et al. | The effect of cBN additions on densification, microstructure and properties of WC–Co composites by pulse electric current sintering | |
| Liang et al. | Kinetic analysis on Al2O3/Cu composite prepared by mechanical activation and internal oxidation | |
| CN108640682A (en) | A kind of graphite sheet and its manufacturing method | |
| CN108658596A (en) | graphite sheet and its manufacturing method | |
| CN105086301B (en) | A kind of high heat conduction PTFE tube for thermoelectricity heat exchanger | |
| Cai et al. | Porous NbAl3/TiAl3 intermetallic composites with controllable porosity and pore morphology prepared by two-step thermal explosion | |
| Li et al. | Rapid fabrication of in situ TiC particulates reinforced Fe-based composites by spark plasma sintering | |
| CN111673087A (en) | Preparation method of aluminum-magnesium-boron grinding tool and grinding tool | |
| CN105648263A (en) | High-strength and easy-to-process copper matrix composite and preparation method thereof | |
| CN104630663B (en) | A kind of preparation method of carbon/carbon-molybdenum composite material | |
| CN104959608A (en) | Nanometer silicon carbide particle copper-based friction plate and manufacturing method thereof | |
| CN108467268A (en) | A kind of modified form graphite sheet and its manufacturing method | |
| CN102596851A (en) | Carbon material and process for production thereof | |
| CN1660527A (en) | Warm press forming method in high density and low temperature for powder of stainless steel | |
| CN109226757A (en) | It is a kind of to squeeze with file block material and its preparation method and application | |
| Eray | Application of metal oxides in composites | |
| CN104874796B (en) | WC Ni miniature parts, cutting tool and preparation method thereof are prepared based on multiple physical field activated sintering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |