CN1162501C - Graphite material - Google Patents
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- CN1162501C CN1162501C CNB011014407A CN01101440A CN1162501C CN 1162501 C CN1162501 C CN 1162501C CN B011014407 A CNB011014407 A CN B011014407A CN 01101440 A CN01101440 A CN 01101440A CN 1162501 C CN1162501 C CN 1162501C
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- graphite material
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Abstract
The present invention discloses a graphite material which has the raw materials by the following weight fraction proportioning range: 100 of burnt coke powder, 1 to 30 of titanium powder and 10 to 50 of asphalt, or 100 of burnt coke powder, 1 to 30 of titanium powder, 5 to 30 of silicon powder and 10 to 50 of asphalt; the raw materials are formed by hot pressing at 2000 to 2600 DEG C and under 30MPa, and thus, the graphite material with the heat conductivity of 200 to 350 W/m. K is prepared. The material has the characteristics of high heat conduction coefficient, simple preparation, low manufacturing cost, etc.
Description
The invention belongs to the raw material of wood-charcoal material, relate in particular to a kind of graphite material that can be used for the high heat conduction in space flight, aviation, nuclear industry and the war production.
Because graphite material has many premium propertiess, is widely used in each field of chemical industry, metallurgy, machinery, electronics, nuclear industry and space industry.But, its Application Areas is subject to many limitations because of its non-refractory oxidation.Many researchists are devoted to development and development charcoal/ceramic composite material." charcoal element " magazine discloses four kinds of charcoal/ceramic composite materials, the highest 100W/m.k that also is no more than of its thermal conductivity in first phase 25-27 page or leaf " improving the research (one) of the charcoal/ceramic composite material thermal conductivity " literary composition in 1999.The high heat conduction raw material of wood-charcoal material of external development all uses intermediate phase charcoal fiber to be raw material at present, cost an arm and a leg, and the process for processing difficulty.China researchist was a raw material with intermediate phase charcoal fiber once, prepared a kind of carbon/carbon composite, and thermal conductivity also only is 150W/m.k.
The purpose of this invention is to provide that a kind of cost is low, the graphite material of high heat conduction.
The raw material of graphite material of the present invention consists of forges coke powder, titanium valve, pitch, and its ratio of weight and number is for forging coke powder: titanium valve: pitch=100: (1-30): (10-50).
It also can be to forge coke powder, titanium valve, silica flour, pitch that the raw material of graphite material is formed, and its ratio of weight and number is for forging coke powder: titanium valve: silica flour: pitch=100: (1-30): (5-30): (10-50).
The above-mentioned coke fines size of forging is 100-500 μ m, and the titanium valve granularity is 35-100 μ m, and silicon particle size is 30-90 μ m, and pitch is that softening temperature is medium temperature coal pitch or the petroleum pitch between 90-110 ℃.
The preparation method of high thermal conductivity graphite material of the present invention is with above-mentioned metallic titanium powder, coke powder forged by silica flour and pitch mixes according to the above ratio, hot-forming under thermocompressor, and thermal treatment temp is 2600 ℃, pressure is 30Mpa, promptly obtains high-heat conductivity graphite material.Reach 200-350W/m.K by GB-3399-82 (88) test thermal conductivity.
The present invention compared with prior art has following advantage:
(1) because doped element among the material preparation process, plays katalysis to the greying of material, thereby the degree of graphitization of material is reached more than 95%, correspondingly, material thermal conductivity can improve greatly.
(2) added other element titanium owing among the material, thereby the physical strength and the antioxidant property of material all increased.
Embodiments of the invention are as follows:
Embodiment 1
(1) take by weighing 100 parts and forge coke powder (granularity 100-150 μ m), 4 parts of titanium valves (granularity 35-45 μ m), 30 parts of pitches mix;
(2) mixed raw materials is put among the mould, at 2600 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 200W/m.k (towards).
Embodiment 2
(1) take by weighing 100 parts and forge coke powder (granularity 150-200 μ m), 10 parts of titanium valves (granularity 45-50 μ m), 30 parts of pitches mix;
(2) mixed raw materials is put among the mould, at 2600 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 285W/m.k (towards).
Embodiment 3
(1) take by weighing 100 parts and forge coke powder (granularity 200-300 μ m), 17 parts of titanium valves (granularity 50-60 μ m), 30 parts of pitches mix;
(2) mixed raw materials is put among the mould, at 2600 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 254W/m.k (towards).
Embodiment 4
(1) take by weighing 100 parts and forge coke powder (granularity 300-400 μ m), 25 parts of pitches, 26 parts of titanium valves (granularity 60-75 μ m), 4 parts of silica flours (granularity 30-45 μ m) mix;
(2) mixed raw materials is put among the mould, at 2200 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 350W/m.k (towards).
Embodiment 5
(1) take by weighing 100 parts and forge coke powder (granularity 400-450 μ m), 20 parts of pitches, 26 parts of titanium valves (granularity 75-80 μ m), 8 parts of silica flours (granularity 45-60 μ m) mix;
(2) mixed raw materials is put among the mould, at 2400 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 287W/m.k (towards).
Embodiment 6
(1) take by weighing 100 parts and forge coke powder (granularity 450-500 μ m), 15 parts of pitches, 20 parts of titanium valves (granularity 80-90 μ m), 16 parts of silica flours (granularity 60-75 μ m) mix;
(2) mixed raw materials is put among the mould, at 2400 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 210W/m.k (towards).
Embodiment 7
(1) take by weighing 100 parts and forge coke powder (granularity 450-500 μ m), 10 parts of pitches, 25 parts of titanium valves (granularity 90-100 μ m), 30 parts of silica flours (granularity 75-90 μ m) mix;
(2) mixed raw materials is put among the mould, at 2200 ℃, hot-forming under the 30Mpa.
Prepared graphite material heat conductivility is good, its thermal conductivity be 230W/m.k (towards).
Comparative Examples 1
Forge coke powder (granularity 100-200 μ m) for (1) 100 part, 30 parts of pitches mix;
(2) mixed raw materials is put among the mould, at 2600 ℃, hot-forming under the 30Mpa.
The graphite material thermal conductivity that makes be 120W/m.k (towards).
Comparative Examples 2
Forge coke powder (granularity 100-200 μ m) for (1) 100 part, 30 parts of pitches mix;
(2) mixed raw materials is put among the mould, at 2200 ℃, hot-forming under the 30Mpa.
The graphite material thermal conductivity that makes be 75W/m.k (towards).
Claims (3)
1. a graphite material is characterized in that raw material weight umber ratio comprises following component: forge coke powder: titanium valve: pitch=100: 1-30: 10-50; The described coke fines size scope of forging is 100-500 μ m; Described titanium valve size range is 35-100 μ m; Described pitch is that softening temperature is positioned at medium temperature coal pitch or the petroleum pitch between 90-100 ℃.
2. a kind of graphite material as claimed in claim 1 is characterized in that raw materials by weight portion than also comprising that 5-30 part granularity is the silica flour of 55-80 μ m.
3. a kind of graphite material as claimed in claim 1 or 2 is characterized in that its thermal conductivity 200-350W/m.k.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011014407A CN1162501C (en) | 2001-01-11 | 2001-01-11 | Graphite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011014407A CN1162501C (en) | 2001-01-11 | 2001-01-11 | Graphite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1364845A CN1364845A (en) | 2002-08-21 |
| CN1162501C true CN1162501C (en) | 2004-08-18 |
Family
ID=4652069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011014407A Expired - Fee Related CN1162501C (en) | 2001-01-11 | 2001-01-11 | Graphite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162501C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417623C (en) * | 2006-11-29 | 2008-09-10 | 中国科学院山西煤炭化学研究所 | Method for preparing highly heat-conductive carbon/ceramic composite material |
| CN110212170B (en) * | 2019-05-06 | 2020-12-04 | 上海颐行高分子材料有限公司 | Silicon-based negative electrode material prepared by solid-phase hot pressing and preparation method thereof |
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2001
- 2001-01-11 CN CNB011014407A patent/CN1162501C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1364845A (en) | 2002-08-21 |
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