CN101160037A - Heat radiator and surface treating method thereof - Google Patents
Heat radiator and surface treating method thereof Download PDFInfo
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- CN101160037A CN101160037A CNA2007101776679A CN200710177667A CN101160037A CN 101160037 A CN101160037 A CN 101160037A CN A2007101776679 A CNA2007101776679 A CN A2007101776679A CN 200710177667 A CN200710177667 A CN 200710177667A CN 101160037 A CN101160037 A CN 101160037A
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Abstract
The invention relates to a radiation device and a surface processing method. The radiation device includes a radiation body, wherein, the radiation body is made of aluminum material or the outer surface is provided with an aluminum film; the aluminum surface of the radiation surface is attached with silver micron cluster. The surface processing method of the radiation device includes the following steps: use acid solution to perform corrosion processing on the aluminum surface of the radiation body; and immerge the aluminum surface after corrosion processing into silver amine solution, which contains a reducing agent for silver ions exchange. The invention improves the radiation efficiency, because of large radiation surface area attached with silver micron cluster and large silver thermal coefficient. The radiation device surface processing method of the invention has the advantages of convenient and simple process course and easy operation realization.
Description
Technical field
The present invention relates to a kind of heat abstractor and surface treatment method thereof, relate in particular to the heat abstractor of a kind of fin or radiating tube form, and the method that its surface is handled.
Background technology
Along with development of electronic technology, therefore the miniaturization day by day of various chips, high speed have higher requirement to heat radiation.The radiating effect that how to improve fin is the emphasis of each manufacturer's research all the time, and at present, except that common air cooling way, modes such as water-cooled, heat pipe heat radiation are widely adopted gradually.The conductive coefficient of heat sink material and heat transfer area are the important factor in order of fin radiating efficiency, are example with the fin of CPU, thereby bigger heat sink sizes, more radiating fin can increase area of dissipation and strengthen radiating effect.But the increase of heat sink sizes has hindered the miniaturization development of chip, main frame, thereby radiating fin is crossed and can be reduced wind speed at most on the contrary and influence radiating effect.Therefore, how to improve the material of fin and the key that structure becomes the research of raising radiating efficiency.
Because the conductive coefficient height of aluminium, density are little, cheap, so the most aluminium of material of fin at present.Many technology are also arranged at present from proposing improvement in this respect, for example introduce carbon nano-tube.At publication number is CN1619800, the technical scheme of putting down in writing in the Chinese patent application of CN1929118 and CN1614772 is to adhere to carbon nano-tube material to reach the purpose that strengthens heat-conducting effect in the fin bottom, publication number is that the Chinese patent application of CN1661318 has been put down in writing and a kind of carbon nanomaterial added in the shell material to improve the technical scheme of heat pipe for thermal conductivity ability, publication number is please put down in writing in the Chinese patent of CN1657858 a kind of carbon nanomaterial and metal powder to be added in the capillary wick improving the technical scheme of heat pipe for thermal conductivity ability, publication number be the Chinese patent application of CN1413064 disclose a kind of on capillary wall deposition of carbon nanotubes to improve the technical scheme of heat pipe for thermal conductivity efficient.In addition, the method that improves the metal fin radiating effect simply with carbon nanotube coating being arranged also, is the technical scheme of being put down in writing in the Chinese patent application of CN1896674 as publication number.In addition, publication number is that the Chinese patent application of CN1514488 also discloses a kind of ceramic heat-dissipating sheet with small hole, increases area of dissipation by small hole.
But the problem that above-mentioned prior art scheme exists is: carbon nano-tube has problems such as cost height, complex process and easy lodging; And utilizing porous ceramic to do fin, the heat dispersion of ceramic material is relatively poor, and the raising of radiating efficiency is had bigger restriction.
Summary of the invention
The purpose of this invention is to provide a kind of heat abstractor and surface treatment method thereof, to realize the simple in structure of heat abstractor, cost is low, and the radiating efficiency height, and its preparation technology is simple, production efficiency is high, and easy operating is realized.
For achieving the above object, provide a kind of heat abstractor, comprised heat radiator body, wherein: the material of this heat radiator body is that the outer surface of aluminium or this heat radiator body is provided with the aluminium film; On the aluminium matter surface of heat radiator body, be attached with silver-colored micron bunch.
For achieving the above object, also provide a kind of surface treatment method of heat abstractor, comprise the steps:
In step 2, the aluminium matter surface immersion silver ammino solution, and add the reducing agent that is useful on the displacement silver ion in this silver ammino solution with corrosion treatment.
By above technical scheme as can be known, the present invention adopts the technological means silver-colored micron bunch of heat abstractor surface attachment, can increase the cooling surface area of heat abstractor, and the thermal conductivity of silver is big, can improve radiating efficiency, and adopt to make the silver micron bunch be attached to the lip-deep method of aluminium matter in the silver mirror reaction process to prepare heat abstractor of the present invention, its technical process is easy, quick.Construction for heat radiating device of the present invention is simple, and cost is low, and the radiating efficiency height, and the surface treatment method technology of this heat abstractor is simple, production efficiency is high, and easy operating is realized.
Also in conjunction with the accompanying drawings the present invention is described in further detail below by specific embodiment.
Description of drawings
Figure 1A is the structural representation of heat abstractor specific embodiment one of the present invention;
Figure 1B is the structural representation of heat abstractor specific embodiment two of the present invention;
Fig. 2 is the flow chart of the surface treatment method specific embodiment one of heat abstractor of the present invention;
Fig. 3 is the flow chart of the surface treatment method specific embodiment two of heat abstractor of the present invention;
Fig. 4 is the operation chart of the surface treatment method specific embodiment two of heat abstractor of the present invention;
Fig. 5 is the flow chart of the surface treatment method specific embodiment three of heat abstractor of the present invention;
Fig. 6 is the flow chart of the surface treatment method specific embodiment four of heat abstractor of the present invention;
Fig. 7 is the operation chart of the surface treatment method specific embodiment four of heat abstractor of the present invention.
Embodiment
Heat abstractor embodiment one
Be depicted as the structural representation of heat abstractor specific embodiment one of the present invention as Figure 1A, this heat abstractor comprises heat radiator body 1, and the material of this heat radiator body 1 is an aluminium, is attached with silver micron bunches 2 on the aluminium matter surface of this heat radiator body 1.
The heat abstractor of present embodiment is on the surface of aluminium matter heat radiator body and generates silver micron bunch, and so-called silver micron bunch is by many several nanometers to the flock together flowers shape structure of the certain volume that forms of the Nano silver piece of hundreds of nanometer.Have regular structure, but not impalpable structure.Heat radiator body can be the aluminium radiator spare of existing arbitrary shape, as fin, radiating tube etc., can only plate on its surface that is used to dispel the heat and establish silver-colored micron bunch.
Heat abstractor embodiment two
Be depicted as the structural representation of heat abstractor specific embodiment two of the present invention as Figure 1B, this heat abstractor comprises heat radiator body 1, the material of this heat radiator body 1 is other metal materials of non-aluminium, outer surface in this heat radiator body 1 is provided with layer of aluminum film 3, is attached with silver-colored micron bunch 2 on aluminium film 3 surfaces of this heat radiator body 1.
The thickness of aluminium film should be at least 1 micron (μ m) in the present embodiment, and preferably the aluminium film of 50 micron thickness is established in plating.As required, can be only generate on the radiating surface of silver micron bunch plating and establish the aluminium film at needs.
The technical scheme of heat abstractor embodiment one of the present invention and embodiment two, its heat radiator body outer surface further is attached with silver-colored micron bunch, be equivalent to increase area of dissipation, and silver itself have high thermal, so can improve the radiating efficiency of heat abstractor.In addition, this device simple in structure, cost is low, silver micron clustering architecture is stable, tack is good, so the damage that is difficult for dropping, durability is good.
The surface treatment method specific embodiment one of heat abstractor
Be illustrated in figure 2 as the flow chart of the surface treatment method specific embodiment one of heat abstractor of the present invention, it comprises the steps:
In step 2, the aluminium matter surface immersion silver ammino solution, and add the reducing agent that is useful on the displacement silver ion in this silver ammino solution with corrosion treatment.
In the present embodiment, the purpose that corrosion treatment is carried out on aluminium matter surface, the one, remove the oxide layer on aluminium matter surface, the 2nd, generate aluminium ion on aluminium matter surface, clustering architecture generates because aluminium ion can be induced the silver micron in follow-up silver mirror reaction.The aluminium matter surface of corrosion treatment is dipped in the silver ammino solution, if add in the silver ammino solution reducing agent arranged, silver mirror reaction will take place, the container wall that holds silver ammino solution has silver mirror and generates, in this process, will adhere to silver-colored micron bunch on the aluminium matter surface of heat abstractor, the time that reducing agent adds silver ammino solution can be to add before silver ammino solution is immersed on aluminium matter surface, also can be to add again after immersing, should keep the short time interval with the operation that adds reducing agent as far as possible but immerse aluminium matter surface.
This surface treatment method can be used for preparing heat abstractor of the present invention, can with simply, preparation technology carries out surface treatment to heat abstractors such as existing fin or radiating tubes efficiently, obtains heat abstractor simple in structure, that cost is low and radiating efficiency is high.
The surface treatment method specific embodiment two of heat abstractor
Be illustrated in figure 3 as the flow chart of the surface treatment method specific embodiment two of heat abstractor of the present invention, present embodiment is at the aluminium heat sink 4 of shape shown in Fig. 4, and promptly heat radiator body is carried out surface treatment, and it comprises the steps:
The surface treatment method of present embodiment can with simply, preparation technology carries out surface treatment to existing aluminium heat sink efficiently, obtains heat abstractor simple in structure, that cost is low and radiating efficiency is high.
The surface treatment method specific embodiment three of heat abstractor
Be illustrated in figure 5 as the flow chart of the surface treatment method specific embodiment three of heat abstractor of the present invention, present embodiment carries out surface treatment at the stainless steel fin, and it comprises the steps:
The technical scheme of present embodiment is the surface treatment method that non-aluminium matter heat abstractor is carried out, and has increased the step of establishing the aluminium film in the surface plating of non-aluminium matter heat abstractor, and the thickness of establishing the aluminium film that plates should be at least 1 micron.After silver micron bunch is attached on the aluminium film, can realize the drying of stainless steel fin by the mode of natural air drying volatilization, the surface of dry back stainless steel fin is taupe.The surface treatment method of present embodiment equally can with simply, preparation technology carries out surface treatment to existing non-aluminium heat sink efficiently, obtains heat abstractor simple in structure, that cost is low and radiating efficiency is high.
The surface treatment method specific embodiment four of heat abstractor
Be illustrated in figure 6 as the flow chart of the surface treatment method specific embodiment four of heat abstractor of the present invention, present embodiment carries out surface treatment at the aluminium matter heat pipe 5 of shape as shown in Figure 7, and it comprises the steps:
Step 300, the position that aluminium matter heat pipe 5 need not adhered to silver micron bunch apply one deck organic material protective finish 6, for example vaseline;
Step 301, the aluminium matter heat pipe 5 usefulness concentration that part surface is applied organic material protection coating 6 are that the hydrochloric acid solution of 1.0mol/L soaks and carried out corrosion treatment in 1 minute, then take out, and clean up with deionized water;
Step 302, be that the ammoniacal liquor of 1.1mol/L splashes in the liquor argenti nitratis ophthalmicus that 20mL concentration is 0.12mol/L, till titration to silver hydroxide (AgOH) precipitation disappears, thereby prepare silver ammino solution 10 concentration;
Step 303, will be that the glucose solution of 0.56mol/L adds in the silver ammino solution 10 that makes in the step 302 as the 30ml concentration of reducing agent;
Step 304, the aluminium matter heat pipe 5 with corrosion treatment in the step 301 immerses in the silver ammino solution 10 that step 303 obtains immediately, because of the protection of organic material protective finish 6 is arranged, so the position that need not adhere to silver-colored micron bunch can not react, at room temperature left standstill 30 minutes, therebetween, hold and have silver mirror on container 11 walls of silver ammino solution 10 and generate, and the aluminium matter surface of aluminium matter heat pipe 5 can be attached with silver micron bunch;
Step 305, aluminium matter heat pipe 5 is taken out from silver ammino solution 10, clean up with deionized water.
Step 306, with organic solvent with organic material protective finish 6 flush awaies after, it is dry aluminium matter heat pipe 5 to be put into vacuum drying oven again, this moment, the surface of heat abstractor can become taupe.
The technical scheme of present embodiment is applicable to the need processing situation staggered with not needing into treatment sites that solves the heat abstractor surface; need not adhere to the position coating protective film of silver micron bunch with organic material; do not react in the time of just can realizing soaking; adopt this method; can also save the outstanding trouble that is fixed in the silver ammino solution surface of heat abstractor in the whole immersion silver ammino solution of heat abstractor.
In the foregoing description two, three and four the technical scheme, be specially and adopt hydrochloric acid solution as the used acid solution of corrosion treatment, this step also can replace hydrochloric acid solution to carry out corrosion treatment with salpeter solution or other acid solutions; When using hydrochloric acid solution, the concentration range of hydrochloric acid solution can be from 0.005mol/L to 8mol/L, and preferable span is that 0.1mol/L is to 2mol/L; The time of carrying out corrosion treatment with hydrochloric acid solution should be not less than for 2 seconds, preferably the immersion treatment that continues 1 minute.After the step of carrying out corrosion treatment, can also increase aluminium ion (Al
3+) surface treatment step, its purpose also is to increase aluminum ions adhering on aluminium matter surface.This step is about to preferably soak 5 minutes in the aluminium matter surface immersion aluminum salt solution of heat abstractor, then takes out, and cleans up with deionized water, and aluminum salt solution can be specially aluminum nitrate (Al (NO
3)) solution, aluminium chloride (AlCl
3) in solution or other water-soluble aluminum salting liquids, the concentration range of aluminum salt solution can for 0.005mol/L to 5mol/L.
In the foregoing description two, three and four the technical scheme, can also adopt other reducing agents that can replace silver ion to replace glucose solution, for example formaldehyde.When using glucose solution, its preferable concentration is that 0.1mol/L is to 2mol/L.
In the foregoing description two, three and four the technical scheme, the preparation method of silver ammino solution can have multiple, and this is those skilled in the art's a common practise, repeats no more herein.The soak time on aluminium matter surface can be controlled silver-colored micron bunch size, and soaking the reaction time generally should be less than 2 hour.
In addition, in the step of technique scheme, adopting the step of washed with de-ionized water is the prerequisite of carrying out next step chemical reaction, is those skilled in the art's common technology means.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (14)
1. a heat abstractor comprises heat radiator body, it is characterized in that: the material of described heat radiator body is that the outer surface of aluminium or described heat radiator body is provided with the aluminium film; On the aluminium matter surface of described heat radiator body, be attached with silver-colored micron bunch.
2. heat abstractor according to claim 1 is characterized in that: the thickness of described aluminium film is not less than 1 micron.
3. heat abstractor according to claim 2 is characterized in that: the thickness of described aluminium film is 50 microns.
4. the surface treatment method of a heat abstractor is characterized in that, comprising:
Step 1, corrosion treatment is carried out on the aluminium matter surface of the heat radiator body of heat abstractor with acid solution;
In step 2, the described aluminium matter surface immersion silver ammino solution, and add the reducing agent that is useful on the displacement silver ion in the described silver ammino solution with corrosion treatment.
5. the surface treatment method of heat abstractor according to claim 4 is characterized in that, described acid solution is hydrochloric acid solution or salpeter solution.
6. the surface treatment method of heat abstractor according to claim 5, it is characterized in that: the concentration range of described hydrochloric acid solution is that 0.005mol/L is to 8mol/L.
7. the surface treatment method of heat abstractor according to claim 6, it is characterized in that: the concentration range of described hydrochloric acid solution is that 0.1mol/L is to 2mol/L.
8. the surface treatment method of heat abstractor according to claim 5, it is characterized in that: the described time of corrosion treatment is carried out on the aluminium matter surface of heat radiator body with hydrochloric acid solution was not less than for 2 seconds.
9. the surface treatment method of heat abstractor according to claim 4 is characterized in that, with acid solution the aluminium matter surface of described heat radiator body is being carried out also comprising after the corrosion treatment: the aluminium matter surface of soaking described heat radiator body with aluminum salt solution.
10. the surface treatment method of heat abstractor according to claim 9, it is characterized in that: the concentration range of described aluminum salt solution is that 0.005mol/L is to 5mol/L.
11. the surface treatment method of heat abstractor according to claim 4 is characterized in that, also comprises before described step 1: establish the aluminium film in the plating of the surface of described heat radiator body and form aluminium matter surface.
12. the surface treatment method according to claim 4 or 11 described heat abstractors is characterized in that, also comprises before step 1: the surface-coated organic material protective finish that need not handle in heat radiator body.
13. the surface treatment method of heat abstractor according to claim 4 is characterized in that, also comprises after the described step 2: described heat abstractor is placed in the vacuum drying chamber dries.
14. the surface treatment method of heat abstractor according to claim 4 is characterized in that, described reducing agent is glucose or formaldehyde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101776679A CN101160037A (en) | 2007-11-19 | 2007-11-19 | Heat radiator and surface treating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101776679A CN101160037A (en) | 2007-11-19 | 2007-11-19 | Heat radiator and surface treating method thereof |
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| CN101160037A true CN101160037A (en) | 2008-04-09 |
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| CNA2007101776679A Pending CN101160037A (en) | 2007-11-19 | 2007-11-19 | Heat radiator and surface treating method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350236A (en) * | 2013-07-25 | 2013-10-16 | 湖南科技大学 | Method for compounding hexagon silver nanosheet |
| CN104005010A (en) * | 2014-04-14 | 2014-08-27 | 北京工业大学 | Preparation method of silver coated aluminum alloy powder for conductive filler |
| CN106770499A (en) * | 2017-01-13 | 2017-05-31 | 京东方科技集团股份有限公司 | Carbon monoxide transducer and preparation method thereof, control method and intelligent television |
| CN107548261A (en) * | 2016-06-27 | 2018-01-05 | 上海奇谋能源技术开发有限公司 | A kind of method for improving radiator heat-dissipation efficiency |
| CN110043529A (en) * | 2019-05-15 | 2019-07-23 | 扬州力液德机械有限公司 | A kind of high efficiency and heat radiation protective cover for hydraulic cylinder |
-
2007
- 2007-11-19 CN CNA2007101776679A patent/CN101160037A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350236A (en) * | 2013-07-25 | 2013-10-16 | 湖南科技大学 | Method for compounding hexagon silver nanosheet |
| CN103350236B (en) * | 2013-07-25 | 2015-03-18 | 湖南科技大学 | Method for compounding hexagon silver nanosheet |
| CN104005010A (en) * | 2014-04-14 | 2014-08-27 | 北京工业大学 | Preparation method of silver coated aluminum alloy powder for conductive filler |
| CN107548261A (en) * | 2016-06-27 | 2018-01-05 | 上海奇谋能源技术开发有限公司 | A kind of method for improving radiator heat-dissipation efficiency |
| CN106770499A (en) * | 2017-01-13 | 2017-05-31 | 京东方科技集团股份有限公司 | Carbon monoxide transducer and preparation method thereof, control method and intelligent television |
| CN106770499B (en) * | 2017-01-13 | 2021-05-18 | 京东方科技集团股份有限公司 | Carbon monoxide sensor, manufacturing method and control method thereof and smart television |
| CN110043529A (en) * | 2019-05-15 | 2019-07-23 | 扬州力液德机械有限公司 | A kind of high efficiency and heat radiation protective cover for hydraulic cylinder |
| CN110043529B (en) * | 2019-05-15 | 2023-08-25 | 扬州力液德机械有限公司 | Efficient heat dissipation protective cover for hydraulic cylinder |
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Open date: 20080409 |