CN109631637A - Aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure - Google Patents
Aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure Download PDFInfo
- Publication number
- CN109631637A CN109631637A CN201811599076.5A CN201811599076A CN109631637A CN 109631637 A CN109631637 A CN 109631637A CN 201811599076 A CN201811599076 A CN 201811599076A CN 109631637 A CN109631637 A CN 109631637A
- Authority
- CN
- China
- Prior art keywords
- heat pipe
- aluminium base
- super hydrophilic
- ultrathin heat
- hydrophilic structure
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a kind of aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure, the aluminium base ultrathin heat pipe preparation method step with super hydrophilic structure includes: that aluminum substrate is milled out groove surface and is cleaned up；Surface scan is carried out to the groove surface by nanosecond laser processing unit (plant), forms the continuous capillary structure with fine hair pattern in surface；The identical aluminum substrate with the continuous capillary structure of two block sizes is welded together in the opposite mode of the groove surface；Encapsulation process is carried out after the inside cavity injection working media formed to two groove surfaces.The present invention keeps surface of aluminum plate modified by laser Surface scan, forms the continuous capillary structure with fine hair pattern, so that radiating efficiency is largely improved, and simple process, more frivolous, lower cost.
Description
Technical field
It is especially a kind of with the aluminium base ultrathin heat pipe of super hydrophilic structure and preparation side the present invention relates to heat conductor field
Method.
Background technique
The demand in laptop market constantly increases in recent years, and heat dissipation problem is always to perplex notebook computer performance to mention
The technical bottleneck risen, this proposes stern challenge to the cooling system of laptop, and laptop constantly to
High-performance, micromation, integrated development, heat dissipation problem it is increasingly prominent.
The cooling system of portable product mainly reaches heat dissipation using the phase transformation of liquid based on heat pipe heat radiation at present
Purpose, conventional heat pipe include sealing vacuum tube, liquid-sucking core, working media, and key technology is that the capillary for improving liquid-sucking core is made
Firmly, traditional liquid-sucking core mainly has silk screen core, powder sintered core, fibre core, groove core, composite core etc., these liquid-sucking cores are equal
There are some problems, it is difficult to meet the demand for development of heat pipe ultrathin.Meanwhile ultrathin heat pipe generallys use plated film in the prior art
Method and electrochemical process, the process is more complicated, cost costly.Therefore urgently propose a kind of new technical side about ultrathin heat pipe
Case, for solving many deficiencies present in conventional heat pipe technology.
Summary of the invention
The present invention solves the technical problem of provide a kind of with the aluminium base ultrathin heat pipe of super hydrophilic structure and preparation
Method, for solving in the prior art the problems such as heat pipe heat radiation ability is poor, micromation degree is low, complex process, higher cost.
In order to solve the above technical problems, the first solution proposed by the present invention is: providing a kind of with super hydrophilic structure
Aluminium base ultrathin heat pipe preparation method step include: that aluminum substrate is milled out into groove surface and is cleaned up；It is processed by nanosecond laser
Device carries out Surface scan to groove surface, and the continuous capillary structure with fine hair pattern is formed in surface；Two block sizes are identical
Aluminum substrate with continuous capillary structure is welded together in the opposite mode of groove surface；In the cavity formed to two groove surfaces
Encapsulation process is carried out after portion's injection working media.
Wherein, it is 1fs~1000ns that the technological parameter of Surface scan, which includes: laser pulse width, and power is 0~500W, repeats frequency
Rate is 10KHz~50MHz, and scanning speed is 200~6000mm/s.
Wherein, aluminum substrate with a thickness of 0.5mm, groove surface depth is 0.2mm.
Wherein, using laser beam is focused to groove surface progress Surface scan, the continuous hair with fine hair pattern is formed in surface
Fine texture.
Wherein, continuous capillary structure is super hydrophilic capillary structure.
In order to solve the above technical problems, the second solution proposed by the present invention is: providing a kind of with super hydrophilic structure
Aluminium base ultrathin heat pipe, the aluminium base ultrathin heat pipe with super hydrophilic structure is by the above-mentioned ultra-thin heat of aluminium base with super hydrophilic structure
Tube preparation method is made.
The beneficial effects of the present invention are: being in contrast to the prior art, the present invention provides a kind of with super hydrophilic structure
Aluminium base ultrathin heat pipe and preparation method, keep surface of aluminum plate modified using laser Surface scan, form the company with fine hair pattern
Continuous capillary structure, so that radiating efficiency is significantly improved, and simple process, more frivolous, lower cost.
Detailed description of the invention
Fig. 1 is the process signal for one embodiment of aluminium base ultrathin heat pipe preparation method that the present invention has super hydrophilic structure
Figure；
Fig. 2 is the device signal for one embodiment of aluminium base ultrathin heat pipe preparation method that the present invention has super hydrophilic structure
Figure；
Fig. 3 is the structural schematic diagram for one embodiment of aluminium base ultrathin heat pipe that the present invention has super hydrophilic structure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment belongs to the scope of protection of the invention.
For first solution provided by the invention, Fig. 1 and Fig. 2 are please referred to, Fig. 1 is that the present invention has super hydrophilic knot
The flow diagram of one embodiment of aluminium base ultrathin heat pipe preparation method of structure, Fig. 2 are the aluminium that the present invention has super hydrophilic structure
The schematic device of one embodiment of base ultrathin heat pipe preparation method, wherein 201 be nanosecond laser processing unit (plant), and 202 be light
Fibre, 203 be galvanometer system, and 204 be laser work platform, and 205 be computer.
With the aluminium base ultrathin heat pipe preparation method of super hydrophilic structure in present embodiment, specifically includes the following steps:
S101: aluminum substrate is milled out into groove surface and is cleaned up.In this step, first the smooth aluminum substrate in surface is placed on
Satisfactory groove surface is milled out on machine-tool platform, then successively successively in acetone, dehydrated alcohol and goes the aluminum substrate processed
It is cleaned 10 minutes in ionized water using ultrasonic washing instrument, and dries and obtain clean aluminum substrate, and the thickness of preferably aluminum substrate
For 0.5mm, groove surface depth is 0.2mm, can also be selected, not made according to the actual situation in other embodiments herein
It limits.
S102: Surface scan is carried out to groove surface by nanosecond laser processing unit (plant), being formed in surface has fine hair pattern
Continuous capillary structure.In this step, after S101 step, clean aluminum substrate groove is placed upwardly on laser work platform
On 204, nanosecond laser processing unit (plant) 201 is controlled by computer 205, laser beam will be focused through optical fiber 202 and pass through galvanometer system 203
Surface scan is carried out to entire groove surface, forms the continuous capillary structure with fine hair pattern in groove surfaces.Wherein, Surface scan
Technological parameter includes: that laser pulse width is 1fs~1000ns, and power is 0~500W, and repetition rate is 10KHz~50MHz, scanning
Speed is 200~6000mm/s；In present embodiment, the technological parameter of preferred Surface scan are as follows: power 23W, repetition rate
350kHz, scanning speed 4336mm/s, overlapping rate 0.1475 in other embodiments can also be right according to the actual situation
Technological parameter is selected, and is not limited thereto.
S103: the identical aluminum substrate with continuous capillary structure of two block sizes is welded in the opposite mode of groove surface
Together.In this step, after S102 step, by the identical aluminum substrate with continuous capillary structure of two block size sizes with two
The opposite mode of a groove surface welds together, and welds latter two opposite groove surface and forms closed cavity.
S104: encapsulation process is carried out after the inside cavity injection working media formed to two groove surfaces.In this step, warp
After crossing S103 step, pore is beaten at the top of above-mentioned closed cavity, working media is injected from the pore to inside cavity, injects work
As 1/3 that medium volume is about cavity total volume；Then vertically upward by pore at the top of cavity, cavity is vacuumized, it is last close
Pore is sealed, to complete the preparation of the aluminium base ultrathin heat pipe with super hydrophilic structure.
Present embodiment sweeps adding for the continuous capillary structure for realizing that ultrathin heat pipe inner wall has fine hair pattern using lasing area
Work, this continuous structure significantly improve the specific surface area of heat pipe inner wall, improve the molecular activity on heat pipe inner wall surface, significantly
Surface free energy is improved, obtains the ultra-hydrophilic surface that contact angle is 5 °, and then improve surface capillary pressure, accelerates heat dissipation system
The radiating efficiency of system.Specifically, material thermal conductivity is tested, the present invention has the aluminium base ultrathin heat pipe of super hydrophilic structure
Thermal coefficient be 305.310W/ (mK), and the heat pipe without the process of identical size is led in the prior art
Hot coefficient is only 203.54W/ (mK), therefore the present invention program significantly improves the thermal coefficient of heat pipe, makes radiating efficiency substantially
It improves.Meanwhile compared with the prior art in use surfacial pattern etching to increase the method for specific surface area, present embodiment use
Laser Surface scan keeps heat pipe inner wall surface modified, and the waste of baseplate material, enables heat pipe to prepare when can effectively reduce etching
Ground is more frivolous.
It is in contrast to the prior art, the present invention provides a kind of aluminium base ultrathin heat pipe preparation side with super hydrophilic structure
Method keeps surface of aluminum plate modified, the continuous capillary structure with fine hair pattern is formd, to significantly improve using laser Surface scan
Radiating efficiency, and simple process, more frivolous, lower cost.
For second solution provided by the invention, referring to Fig. 3, Fig. 3 is that the present invention has super hydrophilic structure
The structural schematic diagram of one embodiment of aluminium base ultrathin heat pipe, wherein 301 be the groove of the continuous capillary structure with fine hair pattern
Face, and the groove surface shows as Superhydrophilic, the aluminium base ultrathin heat pipe with super hydrophilic structure in present embodiment is by preceding
The aluminium base ultrathin heat pipe preparation method with super hydrophilic structure is stated to be made, therefore the aluminium with super hydrophilic structure in present embodiment
With super hydrophilic structure obtained by base ultrathin heat pipe and the aforementioned aluminium base ultrathin heat pipe preparation method with super hydrophilic structure
Aluminium base Ultrathin heat pipe structure and function are consistent.
It is in contrast to the prior art, the present invention provides a kind of aluminium base ultrathin heat pipe with super hydrophilic structure, groove
Face has the continuous capillary structure of fine hair pattern, so that radiating efficiency is significantly improved, and simple process, more frivolous, cost
It is less expensive.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (6)
1. a kind of aluminium base ultrathin heat pipe preparation method with super hydrophilic structure, which is characterized in that step includes:
Aluminum substrate is milled out into groove surface and is cleaned up；
Surface scan is carried out to the groove surface by nanosecond laser processing unit (plant), forms the continuous hair with fine hair pattern in surface
Fine texture；
The identical aluminum substrate with the continuous capillary structure of two block sizes is welded in the opposite mode of the groove surface
It is connected together；
Encapsulation process is carried out after the inside cavity injection working media formed to two groove surfaces.
2. the aluminium base ultrathin heat pipe preparation method according to claim 1 with super hydrophilic structure, which is characterized in that described
The technological parameter of Surface scan include: laser pulse width be 1fs~1000ns, power be 0~500W, repetition rate be 10KHz~
50MHz, scanning speed are 200~6000mm/s.
3. the aluminium base ultrathin heat pipe preparation method according to claim 1 with super hydrophilic structure, which is characterized in that described
Aluminum substrate with a thickness of 0.5mm, the groove surface depth is 0.2mm.
4. the aluminium base ultrathin heat pipe preparation method according to claim 1 with super hydrophilic structure, which is characterized in that use
It focuses laser beam and Surface scan is carried out to the groove surface, form the continuous capillary structure with fine hair pattern in surface.
5. the aluminium base ultrathin heat pipe preparation method according to claim 1 with super hydrophilic structure, which is characterized in that described
Continuous capillary structure is super hydrophilic capillary structure.
6. a kind of aluminium base ultrathin heat pipe with super hydrophilic structure, which is characterized in that the aluminium base with super hydrophilic structure is super
Thin heat pipe is that the aluminium base ultrathin heat pipe preparation method as described in Claims 1 to 5 with super hydrophilic structure is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599076.5A CN109631637A (en) | 2018-12-26 | 2018-12-26 | Aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599076.5A CN109631637A (en) | 2018-12-26 | 2018-12-26 | Aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109631637A true CN109631637A (en) | 2019-04-16 |
Family
ID=66077684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811599076.5A Withdrawn CN109631637A (en) | 2018-12-26 | 2018-12-26 | Aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109631637A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833693A (en) * | 2021-02-26 | 2021-05-25 | 华南理工大学 | Preparation method of aluminum flat heat pipe and aluminum flat heat pipe |
-
2018
- 2018-12-26 CN CN201811599076.5A patent/CN109631637A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833693A (en) * | 2021-02-26 | 2021-05-25 | 华南理工大学 | Preparation method of aluminum flat heat pipe and aluminum flat heat pipe |
| CN112833693B (en) * | 2021-02-26 | 2024-07-16 | 华南理工大学 | Preparation method of aluminum flat plate heat pipe and aluminum flat plate heat pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102500923B (en) | Preparation device for preparing functional micro-nano materials on silicon surfaces based on femtosecond laser and method | |
| CN110081749A (en) | Aluminium base ultrathin heat pipe and preparation method with super-hydrophobic-super hydrophilic structure | |
| CN102916081B (en) | Edge deletion method for thin-film solar cells | |
| Von Gutfeld et al. | Laser enhanced etching in KOH | |
| CN103056521B (en) | Titanium alloy sheet forming process based on continuous laser scanning | |
| CN104129780A (en) | Graphene film and making method thereof | |
| CN102664221B (en) | Light-emitting diode (LED) substrate lift-off method | |
| CN106925895A (en) | Based on the micro-machined glassy carbon electrode surface coarsening preparation method of ultra-short pulse laser | |
| CN109631637A (en) | Aluminium base ultrathin heat pipe and preparation method with super hydrophilic structure | |
| CN111673284A (en) | Method for improving wetting and spreading performance of reaction wetting system material | |
| CN108328616A (en) | A kind of preparation method of three-dimensional MXene | |
| CN110763061A (en) | Vapor chamber and processing method thereof | |
| CN104625417A (en) | Method for controlling topography of nickel surface through femtosecond laser based on electronic dynamic control | |
| CN109853044A (en) | Monocrystalline silicon surface composite microstructure and preparation method thereof based on all band anti-reflection | |
| CN109631638A (en) | Copper-based ultrathin heat pipe and preparation method with super-hydrophobic-super hydrophilic structure | |
| CN202855702U (en) | Microwave energy-conveying window structure | |
| Li et al. | Direct writing of large-area micro/nano-structural arrays on single crystalline germanium substrates using femtosecond lasers | |
| CN207677250U (en) | Based on inner cavity from the tunable blue ray radiation source of frequency multiplication | |
| CN103337539B (en) | A kind of photovoltaic thin film backboard | |
| CN108453375A (en) | A kind of solar battery thin film clear side processing unit (plant) and processing method | |
| CN111672832A (en) | Laser cleaning device and method for aluminum alloy | |
| CN110534225A (en) | A kind of microwave heating equipment in the dry bucket of radioactive liquid waste with high salt | |
| CN110531546A (en) | The cutting method and the hand-written film of liquid crystal of the hand-written film of liquid crystal | |
| CN202053685U (en) | Laser fusing etching marking apparatus based on transparent materials | |
| CN204505584U (en) | Wafer cutting device |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190416 |
|
| WW01 | Invention patent application withdrawn after publication |