CN104894435A - Diamond-doped aluminum-based composite heat radiation material and preparation method thereof - Google Patents
Diamond-doped aluminum-based composite heat radiation material and preparation method thereof Download PDFInfo
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- CN104894435A CN104894435A CN201510211088.6A CN201510211088A CN104894435A CN 104894435 A CN104894435 A CN 104894435A CN 201510211088 A CN201510211088 A CN 201510211088A CN 104894435 A CN104894435 A CN 104894435A
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Abstract
The invention discloses a diamond-doped aluminum-based composite heat radiation material and a preparation method thereof. The heat radiation material is prepared from, by weight, 63-65 parts of aluminum, 2-5 parts of diamond nanopowder, 4-5 parts of aluminum nitride, 5-7 parts of ceramic powder, 4-8 parts of graphite powder, 1-4 parts of multi-walled carbon nano-tube, 5-8 parts of vanadium diboride, 1-2 parts of zirconium diboride, 8-10 parts of gold tailings, 1-3 parts of glycerol, 1-2 parts of triethanolamine, 0.4-0.8 parts of sodium borate, 1-5 parts of an assistant and 2-6 parts of a halogen-free fire retardant. Compared with traditional aluminum heat radiation materials, the material disclosed in the invention integrates the advantages of aluminum, aluminum nitride, diamond, the ceramic powder, the graphite powder and the multi-walled carbon nano-tube, and also has good heat conduction and insulating performances; the added assistant can enhance the compatibility among the above raw materials, and improves the sintering effect, so the material has the advantages of difficult generation of static electricity on the surface, solidness, corrosion resistance, durability, and good heat radiation capability, can well protect LED lights, and effectively prolongs the service life of the lights.
Description
Technical field
The present invention relates to a kind of heat sink material, aluminum-base composite heat sink material of specifically planting doped diamond and preparation method thereof.
Background technology
The development of microelectronics makes the power of electronic product increase gradually, the consequent is the heat dissipation problem of electronic product, the stability of good and bad influential system of heat dispersion and the life-span of hardware, for LED, if temperature rises 2 DEG C, the performance of chip can decline 5%, and work-ing life also can decline 10%.
Existing LED heat sink material mainly contains metal Al and Alalloy, alumina-ceramic, heat-conducting plastic etc.Al and Alalloy thermal conductivity is high, but heat dispersion is not as alumina-ceramic and heat-conducting plastic, and Al and Alalloy is the good conductor of electricity, has certain potential safety hazard as LED scatterer; And pottery and heat-conducting plastic heat dispersion good, insulate non-conductive, but thermal conductivity is too low again, the cooling requirements of great power LED cannot be met, while no matter pure stupalith or aluminum alloy materials energy consumption in scatterer preparation process is all higher.
Summary of the invention
The object of the present invention is to provide a kind of aluminum-base composite heat sink material Preparation Method and application thereof of doped diamond, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of aluminum-base composite heat sink material of doped diamond, be made up of the raw material of following weight parts: aluminium 63-65, diamond nano powder 2-5, aluminium nitride 4-5, ceramics powder 5-7, Graphite Powder 99 4-8, multiple-wall carbon nanotube 1-4, vanadium diboride 5-8, zirconium diboride 1-2, gold mine tailings 8-10, glycerol 1-3, trolamine 1-2, Sodium Tetraborate 0.4-0.8, auxiliary agent 1-5, halogen-free flame retardants 2-6.
Described auxiliary agent is made up of the raw material of following weight part: sodium sand 1-3, polyimide 3-7, silver-coated copper powder 7-12, Sodium orthomolybdate 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: be first dissolved in suitable quantity of water by Sodium orthomolybdate, be prepared into the aqueous solution that concentration is 8-10%, then sodium sand, four acicular type zinc oxide crystal whisker, silver-coated copper powder is dropped into, mixing and ball milling 1-2h, subsequently gained slurry is dried, dry disperse 2-3h again with other remaining component mix and blend after, make 300-400 order fine powder, to obtain final product.
Described halogen-free flame retardants comprises the agent of phosphorus nitrogen fire-retardant, for trimeric cyanamide-poly-phosphate (MP), trimeric cyanamide-polyphosphoric acid salt (MP) and trimeric cyanamide-focusing phosphoric acid salt is a kind of or arbitrary combination.
The preparation method of the aluminum-base composite heat sink material of described a kind of doped diamond, is characterized in that, comprise the steps:
Step 1, first by being mixed with the aqueous solution that concentration is 8-10% in dissolve with ethanol water, adding Sodium Tetraborate subsequently, being stirred to after it dissolves completely, dropping in solution by gold mine tailings, ceramics powder, soak cryodrying after 8-10h, gained material is for subsequent use;
Step 2, step 1 gained material and other remaining component are uniformly mixed 3-4h after, stir speed (S.S.) is 50 rev/min to 80 rev/min, drops into ball-milling processing in ball mill, makes 10000-hole sieve surplus≤0.05% of gained material;
Step 3, the material of step 2 gained is sent into compression moulding in mould, under nitrogen atmosphere with after the temperature of 650-700 DEG C sintering 5-7h, through naturally cooling to room temperature and get final product.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention combines the advantage of the compositions such as aluminium, aluminium nitride, diamond, ceramics powder, Graphite Powder 99, multiple-wall carbon nanotube on raw material compared with conventional aluminum heat exchanging material; have good heat conduction and insulating property concurrently; the auxiliary agent added can promote the consistency between raw material; improve sintering effect; the heat sink material compact structure prepared; any surface finish; electrical insulating property is good; surface not easily produces electrostatic; firm rust protection, durable in use, good heat-sinking capability; can be good at protection LED light fixture, effectively improve the work-ing life of light fixture.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
The aluminum-base composite heat sink material of a kind of doped diamond of the present invention, be made up of the raw material of following weight parts: aluminium 63-65, diamond nano powder 2-5, aluminium nitride 4-5, ceramics powder 5-7, Graphite Powder 99 4-8, multiple-wall carbon nanotube 1-4, vanadium diboride 5-8, zirconium diboride 1-2, gold mine tailings 8-10, glycerol 1-3, trolamine 1-2, Sodium Tetraborate 0.4-0.8, auxiliary agent 1-5, halogen-free flame retardants 2-6.
Described auxiliary agent is made up of the raw material of following weight part: sodium sand 1-3, polyimide 3-7, silver-coated copper powder 7-12, Sodium orthomolybdate 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: be first dissolved in suitable quantity of water by Sodium orthomolybdate, be prepared into the aqueous solution that concentration is 8-10%, then sodium sand, four acicular type zinc oxide crystal whisker, silver-coated copper powder is dropped into, mixing and ball milling 1-2h, subsequently gained slurry is dried, dry disperse 2-3h again with other remaining component mix and blend after, make 300-400 order fine powder, to obtain final product.
Described halogen-free flame retardants comprises the agent of phosphorus nitrogen fire-retardant, for trimeric cyanamide-poly-phosphate (MP), trimeric cyanamide-polyphosphoric acid salt (MP) and trimeric cyanamide-focusing phosphoric acid salt is a kind of or arbitrary combination.
An its preparation method for the aluminum-base composite heat sink material of doped diamond, comprises the steps:
Step 1, first by being mixed with the aqueous solution that concentration is 8-10% in dissolve with ethanol water, adding Sodium Tetraborate subsequently, being stirred to after it dissolves completely, dropping in solution by gold mine tailings, ceramics powder, soak cryodrying after 8-10h, gained material is for subsequent use;
Step 2, step 1 gained material and other remaining component are uniformly mixed 3-4h after, stir speed (S.S.) is 50 rev/min to 80 rev/min, drops into ball-milling processing in ball mill, makes 10000-hole sieve surplus≤0.05% of gained material;
Step 3, the material of step 2 gained is sent into compression moulding in mould, under nitrogen atmosphere with after the temperature of 650-700 DEG C sintering 5-7h, through naturally cooling to room temperature and get final product.
The thermal conductivity of the more conventional aluminium base heat sink material of the more conventional LED of the heat sink material obtained by the present embodiment heat sink material improves 25.3%, and thermal diffusivity improves 30.5%, and heat balance time shorten in average 175min, light fixture improves 30.6% work-ing life.
Claims (4)
1. the aluminum-base composite heat sink material of a doped diamond, it is characterized in that, be made up of the raw material of following weight parts: aluminium 63-65, diamond nano powder 2-5, aluminium nitride 4-5, ceramics powder 5-7, Graphite Powder 99 4-8, multiple-wall carbon nanotube 1-4, vanadium diboride 5-8, zirconium diboride 1-2, gold mine tailings 8-10, glycerol 1-3, trolamine 1-2, Sodium Tetraborate 0.4-0.8, auxiliary agent 1-5, halogen-free flame retardants 2-6.
2. the aluminum-base composite heat sink material of a kind of doped diamond according to claim 1, it is characterized in that, described auxiliary agent is made up of the raw material of following weight part: sodium sand 1-3, polyimide 3-7, silver-coated copper powder 7-12, Sodium orthomolybdate 1-2, inorganic Ge powder 5-8, four acicular type zinc oxide crystal whisker 12-15, preparation method is: be first dissolved in suitable quantity of water by Sodium orthomolybdate, be prepared into the aqueous solution that concentration is 8-10%, then sodium sand is dropped into, four acicular type zinc oxide crystal whisker, silver-coated copper powder, mixing and ball milling 1-2h, subsequently gained slurry is dried, dry disperse 2-3h again with other remaining component mix and blend after, make 300-400 order fine powder, obtain.
3. the aluminum-base composite heat sink material of a kind of doped diamond according to claim 1, it is characterized in that, described halogen-free flame retardants comprises the agent of phosphorus nitrogen fire-retardant, for trimeric cyanamide-poly-phosphate (MP), trimeric cyanamide-polyphosphoric acid salt (MP) and trimeric cyanamide-focusing phosphoric acid salt is a kind of or arbitrary combination.
4. the preparation method of the aluminum-base composite heat sink material of a kind of doped diamond according to claim 1, is characterized in that, comprise the steps:
Step 1, first by being mixed with the aqueous solution that concentration is 8-10% in dissolve with ethanol water, adding Sodium Tetraborate subsequently, being stirred to after it dissolves completely, dropping in solution by gold mine tailings, ceramics powder, soak cryodrying after 8-10h, gained material is for subsequent use;
Step 2, step 1 gained material and other remaining component are uniformly mixed 3-4h after, stir speed (S.S.) is 50 rev/min to 80 rev/min, drops into ball-milling processing in ball mill, makes 10000-hole sieve surplus≤0.05% of gained material;
Step 3, the material of step 2 gained is sent into compression moulding in mould, under nitrogen atmosphere with after the temperature of 650-700 DEG C sintering 5-7h, through naturally cooling to room temperature and get final product.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317878A (en) * | 2016-08-17 | 2017-01-11 | 安徽福恩光电科技有限公司 | LED lamp cooling fin capable of facilitating cooling |
| CN107723627A (en) * | 2017-10-24 | 2018-02-23 | 徐州轩辕铝业有限公司 | A kind of high-strength aluminum alloy material and preparation method thereof |
| CN108866454A (en) * | 2018-07-23 | 2018-11-23 | 张宝兴 | A kind of ceramic powder and the compound aluminum matrix composite preparation process of staple fiber |
| CN110267506A (en) * | 2019-07-19 | 2019-09-20 | 姜秀芳 | A kind of display screen module of high efficiency and heat radiation |
-
2015
- 2015-04-29 CN CN201510211088.6A patent/CN104894435A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317878A (en) * | 2016-08-17 | 2017-01-11 | 安徽福恩光电科技有限公司 | LED lamp cooling fin capable of facilitating cooling |
| CN107723627A (en) * | 2017-10-24 | 2018-02-23 | 徐州轩辕铝业有限公司 | A kind of high-strength aluminum alloy material and preparation method thereof |
| CN108866454A (en) * | 2018-07-23 | 2018-11-23 | 张宝兴 | A kind of ceramic powder and the compound aluminum matrix composite preparation process of staple fiber |
| CN110267506A (en) * | 2019-07-19 | 2019-09-20 | 姜秀芳 | A kind of display screen module of high efficiency and heat radiation |
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