CN207525336U - A kind of hydrophilic laminated film of heat conduction - Google Patents
A kind of hydrophilic laminated film of heat conduction Download PDFInfo
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- CN207525336U CN207525336U CN201721113680.3U CN201721113680U CN207525336U CN 207525336 U CN207525336 U CN 207525336U CN 201721113680 U CN201721113680 U CN 201721113680U CN 207525336 U CN207525336 U CN 207525336U
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Abstract
The application provides a kind of hydrophilic laminated film of heat conduction, and the hydrophilic laminated film of heat conduction includes heat conduction film and the hydrophilic film positioned at heat conduction film surface, wherein, the hydrophilic film is atomized by potassium water glass to be formed, and the thickness of the hydrophilic film is less than 100 nanometers.Since the hydrophilic film is inorganic, it is preferable relative to the hydrophilic film heat conductivility of organic material, and since the hydrophilic film is formed using atomizing type, thickness is less than 100 nanometers, only nanometer grade thickness, it is smaller so as to be influenced on the heat conductivility of heat conduction film, namely the hydrophilic laminated film of heat conduction provided by the utility model have it is hydrophilic on the basis of, also there is preferable heat conductivility simultaneously, when the hydrophilic laminated film of heat conduction i.e. provided by the utility model is applied on a heat sink, improve the hydrophilicity of cooling fin simultaneously, the heat conductivility of cooling fin is influenced smaller.
Description
Technical field
The utility model belongs to film manufacturing techniques field more particularly to a kind of hydrophilic laminated film of heat conduction.
Background technology
Hydrophilic film has unique performance, in heat exchanger, cooling fin, antifog, automatically cleaning as a kind of surface coating
Have wide practical use in terms of waiting researchs, also increasingly paid attention to by extensive researcher.
But the hydrophilic film heat conductivility applied currently on the market is poor, using on a heat sink when, can reduce scattered
The heat dissipation performance of backing.
With preferable heat conductivility and with preferable hydrophilic laminated film it is urgently to be resolved hurrily therefore it provides a kind of
Problem.
Utility model content
In view of this, the utility model provides a kind of hydrophilic laminated film of heat conduction, to solve hydrophilic film in the prior art
Using on a heat sink when cause cooling fin heat dissipation performance reduce the problem of.
To achieve the above object, the utility model provides following technical solution：
A kind of hydrophilic laminated film of heat conduction, including：
Heat conduction film, the heat conduction film are the SnO for adulterating Sb2Film；
Positioned at the hydrophilic film of the heat conduction film surface, the hydrophilic film is atomized by potassium water glass to be formed, and described
The thickness of hydrophilic film is less than 100 nanometers.
Preferably, the heat conduction film is by SnCl4·5H2O and SbCl3It is 1 according to molar ratio:1 to 9:1 ratio is mixed
Conjunction is dissolved in HCl solution, and stirring makes it fully dissolve, and forms the first solution, then first solution atomization is formed.
Preferably, SnCl4·5H2O and SbCl3Molar ratio be 9:1、8:2、7:3、6:4 or 5:5.
It can be seen via above technical scheme that the hydrophilic laminated film of heat conduction provided by the utility model, the heat conduction are hydrophilic
Laminated film includes heat conduction film and the hydrophilic film positioned at heat conduction film surface, wherein, the hydrophilic film is by potassium water glass
Atomization is formed, and the thickness of the hydrophilic film is less than 100 nanometers.Since the hydrophilic film is inorganic, relative to having
The hydrophilic film heat conductivility of machine material is preferable, and since the hydrophilic film is formed using atomizing type, thickness is received less than 100
Rice, only nanometer grade thickness, so as to influence heat conduction parent smaller namely provided by the utility model on the heat conductivility of heat conduction film
Water laminated film have it is hydrophilic on the basis of, while also have preferable heat conductivility, i.e., heat conduction provided by the utility model
When hydrophilic laminated film is applied on a heat sink, the hydrophilicity for improving cooling fin simultaneously influences the heat conductivility of cooling fin
It is smaller.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the hydrophilic complex thin film structure schematic diagram of a kind of heat conduction that the utility model embodiment provides；
Fig. 2A-Fig. 2 C are the different structure surface contact angle lab diagram that the utility model embodiment provides；
Fig. 3 is the hydrophilic laminated film production process figure of a kind of heat conduction that the utility model embodiment provides；
The thermal conductivity factor and coefficient of heat transfer for the ATO films that Fig. 4 is provided for the utility model embodiment are with temperature change
Relational graph.
Specific embodiment
Just as described in the background section, hydrophilic film heat conductivility of the prior art is poor, using on a heat sink
When, the new energy of heat dissipation of cooling fin can be reduced.
It is the hydrophilic film master applied in the market in the prior art that utility model human hair, which reveals the reason of now above-mentioned phenomenon,
To be organic hydrophilic film, but heat conductivility of organic hydrophilic film itself is poor.And it is prepared in the prior art using dip coating manner
Hydrophilic film, the thickness of gained hydrophilic film is thicker, and heat conductivility is also poor.
Based on this, the utility model provides a kind of hydrophilic laminated film of heat conduction, including：
Heat conduction film, the heat conduction film are the SnO for adulterating Sb2Film；
Positioned at the hydrophilic film of the heat conduction film surface, the hydrophilic film is atomized by potassium water glass to be formed, and described
The thickness of hydrophilic film is less than 100 nanometers.
The hydrophilic laminated film of heat conduction provided by the utility model includes heat conduction film and positioned at the hydrophilic of heat conduction film surface
Film, wherein, the hydrophilic film is atomized by potassium water glass to be formed, and the thickness of the hydrophilic film is less than 100 nanometers.Due to
The hydrophilic film is inorganic, preferable relative to the hydrophilic film heat conductivility of organic material, and due to described hydrophilic thin
Film is formed using atomizing type, and thickness is less than 100 nanometers, only nanometer grade thickness, so as to the heat conductivility shadow to heat conduction film
Ring the smaller namely hydrophilic laminated film of heat conduction provided by the utility model have it is hydrophilic on the basis of, while also have preferable
Heat conductivility, i.e., the hydrophilic laminated film application of heat conduction provided by the utility model on a heat sink when, the parent that improves cooling fin
It is aqueous the heat conductivility of cooling fin to be influenced smaller simultaneously.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
As shown in Figure 1, for the hydrophilic laminated film of a kind of heat conduction that the utility model embodiment provides, including：Heat conduction film
1, heat conduction film 1 is the SnO for adulterating Sb2Film；Hydrophilic film 2 positioned at 1 surface of heat conduction film, hydrophilic film 2 is by potassium water glass
Glass is atomized to be formed, and the thickness H of hydrophilic film 2 is less than 100 nanometers.
It should be noted that hydrophilic film 2 is atomized by potassium water glass and is formed in the present embodiment, and thickness is thick for nanoscale
Degree, i.e. thickness are tens nanometers.The production method of heat conduction film and the thickness of heat conduction film are not limited in the present embodiment, it is optional
, heat conduction film is equally formed using atomizing type in the present embodiment, is specifically included by SnCl4·5H2O and SbCl3According to mole
Than being 1:1 to 9:For 1 ratio mixed dissolution in HCl solution, stirring makes it fully dissolve, and forms the first solution, then by described in
First solution atomization and formed.Wherein, SnCl4·5H2O and SbCl3Molar ratio can be 9:1、8:2、7:3、6:4 or 5:In 5
Any one, this is not limited in the present embodiment.
The concrete technology of potassium water glass atomization is not limited in the present embodiment, optionally, mist is carried out using Ultrasonic atomization method
Change, the inorganic hydrophilic film of nano thickness is then deposited on the surface of heat conduction film using spray pyrolysis.
Using the SnO of the doping Sb of high heat conduction in the present embodiment2Film namely ATO films are as buffer layer, then by potassium water
Glass atomization deposits the inorganic hydrophilic film of nano thickness, and since hydrophilic film has, film forming is uniform and thickness is nanoscale, right
The heat conductivility of heat conduction film influences less, and improves the hydrophilicity of heat conduction film.By hydrophilic film and heat conduction film group
It closes the laminated film formed to apply on the substrates such as aluminium base cooling fin, glass, the heat conductivility of cooling fin and hydrophilic can be improved
Performance.
Inventor it was proved that, obtain following heat conductivility Experimental comparison results：
The thermal conductivity factor comparison of the different film surfaces of table 1
| Substrate | Al | Laminated film is covered on Al |
| Thermal conductivity factor | 192.2 | 197.8 |
From table 1 it follows that the thermal conductivity factor of aluminium substrate is 192.2；On aluminum substrates covering atomization hydrophilic film and
Thermal conductivity factor after the laminated film of ATO heat conduction films increase to 197.8 namely covering it is provided by the utility model atomization it is hydrophilic
It is smaller to the negative effect of the heat dissipation performance of aluminium substrate after the laminated film of film and ATO heat conduction films, improve hydrophilic base
On plinth, the heat conductivility of aluminium substrate is not reduced.
The promotion of hydrophilicity can be obtained by comparison diagram 2A- Fig. 2 C, and the contact angle if Fig. 2A is fine aluminium substrate is
69.4°；Fig. 2 B are that the surface contact angle after fine aluminium substrate surface makes ATO films is 55.9 °；And in fine aluminium substrate surface system
After the laminated film for making ATO heat conduction film and hydrophilic film provided by the utility model, surface contact angle as shown in Figure 2 C, is
5.6 °, by comparing surface contact angle it is found that the hydrophilic laminated film of heat conduction provided by the utility model can effectively improve aluminium base
The hydrophily at bottom.In addition, since contact angle is small, water can form water membrane so that aluminium substrate has in the rapid drawout in surface
Self-cleaning surface ability.
The utility model embodiment also provides a kind of heat conduction hydrophilic preparation method of composite film, as shown in figure 3, including：
S101：By SnCl4·5H2O and SbCl3It is 1 according to molar ratio:1 to 9:1 ratio mixed dissolution is in HCl solution
In, stirring makes it fully dissolve, and forms the first solution；
SnCl is not limited in the present embodiment4·5H2O and SbCl3Specific molar ratio, optionally, SnCl4·5H2O and
SbCl3Molar ratio be 9:1、8:2、7:3、6:4 or 5:5.
S102：Potassium water glass is added to the second solution for being configured to that mass fraction is 5%-10% in deionized water；
It should be noted that when potassium water glass concentration is higher, gelation easily occurs, it is impossible to it is atomized pyrolysis again, therefore,
Potassium water glass mass fraction is 5%-10% in the present embodiment, including endpoint value.
In addition, it is necessary to illustrate, the preparation sequence of the first solution and the second solution, the two system are not limited in the present embodiment
Standby sequence can be interchanged, this is not limited in the present embodiment.
S103：Substrate is provided, and the substrate is heated to 450 DEG C or more；
Substrate described in the present embodiment can be aluminium substrate, aluminum alloy substrate, stainless steel base or substrate of glass, this implementation
This is not limited in example, is designed according to the concrete application scene of the hydrophilic laminated film of heat conduction.
S104：First solution is atomized using spray pyrolysis, the first solution after atomization is in the substrate
The SnO of upper hot layer forming solution doping Sb2Film；
The SnO of doping Sb is formed in the present embodiment2During the heat conduction film of film, the technique used is spray pyrolysis method.
It specifically includes：First solution is put into supersonic atomizer and is atomized；Heat is carried out to the first solution after atomization
Solution forms the SnO of one layer of doping Sb2Film.
It should be noted that as shown in figure 4, Fig. 4 is the SnO for adulterating Sb2The thermal conductivity factor of heat conduction film (ATO films) with
And coefficient of heat transfer is with temperature change relationship, wherein, abscissa is temperature, and left side ordinate is thermal conductivity factor, right side ordinate
For coefficient of heat transfer, square represents the thermal conductivity factor of heat conduction film, the coefficient of heat transfer of square band × represent heat conduction film.Pass through Fig. 4
As can be seen that ATO films, when temperature is 450 DEG C -550 DEG C, heat conductivility is preferable, and especially at 500 DEG C, heat conductivility is most
It is good, therefore, in the present embodiment when being atomized the first solution formation ATO films, substrate is heated to 450 DEG C or more, in particular 450
DEG C -550 DEG C, including endpoint value.It is more optional, base reservoir temperature can be controlled at 500 DEG C or so, to form heat conductivility
Preferable heat conduction film.
Furthermore, it is contemplated that when base reservoir temperature is too low, pyrolytic reaction can not occur, cannot get ATO films, and when substrate is aluminium
During substrate, to avoid temperature excessively high, aluminium substrate is melted so that the adhesive force of molecule declines, in the present embodiment preferably, will
Base reservoir temperature is controlled at 450 DEG C -550 DEG C, including endpoint value.
S105：Second solution is atomized using spray pyrolysis, the second solution after atomization is in the doping
The SnO of Sb2Hydrophilic film is formed on film.
The making of hydrophilic film is equally formed using spray pyrolysis in the present embodiment, in the feelings for keeping base reservoir temperature constant
Under condition, the second solution after atomization is formed into hydrophilic film on heat conduction film.Specifically, second solution is put into ultrasound
It is atomized in wave atomising device；The second solution after atomization is pyrolyzed, one layer of formation is hydrophilic on the heat conduction film
Film.
The hydrophilic preparation method of composite film of heat conduction provided by the utility model, can be by being atomized on the surface of heat conduction film
The hydrophilic film of nanometer grade thickness is formed, the hydrophilic film improves the hydrophily of heat conduction film, while to heat conduction film
Heat conductivility influence is smaller, so that when the hydrophilic laminated film of heat conduction is applied on a heat sink, the heat conduction to cooling fin
Performance influences smaller.It is nanoscale to obtain hydrophilic film to have the uniform and film thickness that forms a film using the above method, which can
It applies on the substrates such as aluminium base cooling fin, glass, improves the heat conductivility and hydrophilicity of cooling fin.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference from other examples, and just to refer each other for identical similar part between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (1)
1. a kind of hydrophilic laminated film of heat conduction, which is characterized in that including：
Heat conduction film, the heat conduction film are the SnO for adulterating Sb2Film；
Positioned at the hydrophilic film of the heat conduction film surface, the hydrophilic film is atomized by potassium water glass to be formed, and described hydrophilic
The thickness of film is less than 100 nanometers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721113680.3U CN207525336U (en) | 2017-08-31 | 2017-08-31 | A kind of hydrophilic laminated film of heat conduction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721113680.3U CN207525336U (en) | 2017-08-31 | 2017-08-31 | A kind of hydrophilic laminated film of heat conduction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385421A (en) * | 2017-08-31 | 2017-11-24 | 广东工业大学 | A kind of hydrophilic laminated film of heat conduction and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385421A (en) * | 2017-08-31 | 2017-11-24 | 广东工业大学 | A kind of hydrophilic laminated film of heat conduction and preparation method thereof |
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