KR20170062585A - Nano hair layer and radiant heat structure using the same - Google Patents

Nano hair layer and radiant heat structure using the same Download PDF

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Publication number
KR20170062585A
KR20170062585A KR1020150167343A KR20150167343A KR20170062585A KR 20170062585 A KR20170062585 A KR 20170062585A KR 1020150167343 A KR1020150167343 A KR 1020150167343A KR 20150167343 A KR20150167343 A KR 20150167343A KR 20170062585 A KR20170062585 A KR 20170062585A
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KR
South Korea
Prior art keywords
nano
hair
heat
substrate
thermally conductive
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KR1020150167343A
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Korean (ko)
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KR101842522B1 (en
Inventor
윤재성
윤석호
김재윤
박상진
유영은
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한국기계연구원
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations

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  • Engineering & Computer Science (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)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The present invention relates to a thermally conductive nano-hair layer capable of increasing a contact area between two substrates, reducing contact thermal resistance, and promoting conduction heat transfer when a heat generating substrate and a diverging substrate are combined, and a heat dissipating structure using the same.
To this end, the heat-radiating structure includes a heat-generating substrate on which heat is generated and a heat-radiating substrate coupled to the heat-generating substrate so as to radiate heat generated from the heat-generating substrate. The heat-generating substrate includes a thermally conductive first nano- Wherein the first nano-hair and the second nano-hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less Or less.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat-conductive nano-hair layer and a heat-

The present invention relates to a thermally conductive nano-hair layer and a heat-radiating structure using the heat-conductive nano-hair layer. More specifically, the present invention relates to a heat- The present invention relates to a thermally conductive nano-hair layer and a heat-dissipating structure using the same.

Generally, a heat exchanger. The heat transfer due to conduction is greatly influenced by the contact surface when multiple materials or the same material are assembled into various parts as compared with a case where a heat transfer mechanism such as a cooling fin is made of a single material.

Particularly, as shown in Fig. 1, when the diverging base material 2 is laminated on the heat generating base material 1, since the surface roughness is not good, the heat transfer is performed only through the finely divided contact parts. The resistance increases. At this time, the heat conductive liquid (3) such as thermal grease is filled between the heat generating substrate (1) and the diverging substrate (2) to ensure conductivity.

However, the conventional thermally conductive liquid tends to become solidified and deteriorated over time, and when re-assembly is required for maintenance of the heat generating substrate 1 and the diverging substrate 2, the thermally conductive liquid is refilled There is a hassle to do.

Korean Patent Laid-Open Publication No. 2009-0125832 (title of the invention: thermal grease articles and methods, published on December 7, 2009)

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art, and it is an object of the present invention to provide a heat conductive nano-ceramic material capable of increasing a contact area between two substrates, reducing contact heat resistance, And a heat radiation structure using the same.

According to a preferred embodiment of the present invention, the heat-radiating structure according to the present invention includes a heat-generating substrate on which heat is generated; And a radiating substrate coupled to the heating substrate so as to radiate heat generated from the heating substrate, wherein a nano-sized thermally conductive first nano hair is protruded and formed on the heating substrate, A thermally conductive second nano-hair that is cross-linked with a 1-nano-hair is protruded, and the first nano-hair and the second nano-hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less .

The heat-radiating structure according to the present invention includes a heat-generating substrate on which heat is generated; A radiating substrate coupled to the heating substrate to radiate heat generated from the heating substrate; A thermally conductive first nano-hair layer coupled to the heating substrate and having nano-sized first nano-hair protruding toward the diverging substrate; And a thermally conductive second nano-hair layer coupled to the diverging substrate and having a nano-sized second nano-hair protruding toward the heating substrate to be cross-linked with the first nano-hair, wherein the first nano- And the second nano-hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less.

Here, the first nano hair and the second nano hair include a polymer material composed of at least one of polycarbonate and polyurethane.

Here, the first nano-hair and the second nano-hair may further include at least one of carbon nanotube (CNT), graphene, and metal powder.

Here, the metal powder includes at least one of aluminum, an aluminum alloy, copper, and a copper alloy.

The thermally conductive nano-hair layer according to the present invention comprises a thermally conductive first nano-hair layer bonded to a heat-generating substrate on which heat is generated and having nano-sized first nano-hair protruding thereon; And a thermally conductive second nano-hair layer coupled to a radiating substrate through which heat generated from the heat generating substrate is radiated, the nano-sized second nano-hair being protruded toward the heating substrate so as to be cross-linked with the first nano- Wherein the first nano hair and the second nano hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less.

According to the thermally conductive nano-hair layer and the heat-radiating structure using the thermally conductive nano-hair layer according to the present invention, when the heat-generating substrate and the radiating substrate are bonded, the contact area between the two substrates can be increased, contact heat resistance can be reduced, and conduction heat transfer can be promoted .

In addition, the present invention can prevent deterioration of the conduction heat transfer performance even when the heat dissipating structure is repeatedly disassembled and assembled in maintenance.

Further, the present invention facilitates the processing of the first nano-hair and the second nano-hair in the heat-generating substrate and the radiation substrate, and prevents the first nano-hair and the second nano-hair from being broken by repeatedly performing decomposition and assembly .

In addition, the present invention can improve the thermal conductivity and flexibility of the first nano-hair and the second nano-hair, and increase the adhesion between the first nano-hair layer and the second nano-hair layer in the exothermic substrate and the dissipative substrate, respectively.

1 is an enlarged cross-sectional view showing a conventional heat dissipating structure.
2 is an enlarged sectional view showing a heat radiation structure according to an embodiment of the present invention.
3 is an enlarged photograph showing a processing state of the first nano hair in the heat radiation structure according to an embodiment of the present invention.
4 is an enlarged cross-sectional view illustrating a heat radiation structure according to another embodiment of the present invention.

Hereinafter, a heat-conducting nano-hair layer according to the present invention and heat-radiating structures using the same will be described with reference to the accompanying drawings. Here, the present invention is not limited or limited by the examples. Further, in describing the present invention, a detailed description of well-known functions or constructions may be omitted for clarity of the present invention.

FIG. 2 is an enlarged sectional view showing a heat radiation structure according to an embodiment of the present invention, and FIG. 3 is an enlarged photograph showing a processing state of the first nano hair in the heat radiation structure according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the heat-radiating structure according to an embodiment of the present invention includes a heat-generating substrate 10 and a radiating substrate 20.

Heat is generated in the heat generating substrate (10). The heat-generating substrate 10 may be heat-generated through various known types.

The heat generated in the heat generating substrate 10 is dissipated from the diverging substrate 20. The radiating substrate 20 is bonded to the heat generating substrate 10. The diverging substrate 20 may be coupled to the heating substrate 10 via various types of fixing means (not shown).

At this time, nano-sized thermally conductive nano-hair is protruded from the heat generating substrate 10 and the diverging substrate 20, respectively. In other words, a plurality of nano-sized thermally conductive first nano-hair 31 are protruded and formed on the heat generating substrate 10, and the nano-sized A plurality of thermally conductive second nano hair 41 are formed to protrude. The first nano hair 31 and the second nano hair 41 may be respectively formed on the surface of the heat generating substrate 10 and the light emitting substrate 20 by various known nano structure forming techniques have.

The first nano hair 31 and the second nano hair 41 are cross-coupled with each other to increase the contact area between the heat generating substrate 10 and the diverging substrate 20, , And can promote conduction heat transfer.

Particularly, each of the first nano hair 31 and the second nano hair 41 has a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less. More specifically, the diameter of the first nano hair (31) and the diameter of the second nano hair (41) may be 100 nm or more and 200 nm or less, respectively.

If the diameter of the first nano-hair 31 and the diameter of the second nano-hair 41 are smaller than the above-described critical ranges, the heat generated by the heat-generating substrate 10 may cause deterioration of the nano- If the diameter of the first nano hair 31 and the diameter of the second nano hair 41 are respectively greater than the critical range, the first nano hair 31 and the second nano hair 41 may be damaged, It is difficult for the first nano hair 31 and the second nano hair 41 to intersect with each other so that the first nano hair 31 and the second nano hair 41 are stacked It is difficult to expect the effect of increasing the contact area according to the development.

If the length of the first nano hair 31 and the length of the second nano hair 41 are more than 10 micrometers, the first nano hair 31 and the second nano hair 41 may be separated, And the first nano hair 31 and the second nano hair 41 may be interfered with each other according to the tilting of the first nano hair 31 or the second nano hair 41, The first nano hair 31 or the second nano hair 41 may be broken at the crossing of the nano hair 41.

However, when the first nano hair 31 and the second nano hair 41 form the above-mentioned critical range, the first nano hair 31 and the second nano hair 41 are prevented from being damaged. The first nano hair (31) and the second nano hair (41) are maintained in a protruding state to facilitate cross-coupling of the first nano hair (31) and the second nano hair (41) , It is possible to suppress or prevent interference of the first nano hair (31) and the second nano hair (41) to cross-linking.

The first nano hair 31 and the second nano hair 41 may be made of a polymer material. In particular, the first nano hair 31 and the second nano hair 41 may be formed of at least one of polycarbonate and polyurethane. When the first nano hair 31 and the second nano hair 41 include the polycarbonate material, the diameter and the protrusion length of the first nano hair 31 and the second nano hair 41 are Can be stably formed. When the first nano-hair 31 and the second nano-hair 41 include a polyurethane material, the flexibility or elasticity of the first nano-hair 31 and the second nano- It is possible to smoothly cross-link the first nano-hair 31 and the second nano-hair 41 in the combination of the heat-generating substrate 10 and the diverging substrate 20. [

The first nano hair 31 and the second nano hair 41 may further include at least one of a carbon nanotube (CNT), a graphene, and a metal powder. At this time, the metal powder may include at least one of aluminum, an aluminum alloy, copper, and a copper alloy.

As described above, the first nano hair (31) and the second nano hair (41) are further mixed with the additive as described above, whereby the thermal conductivity of the first nano hair (31) and the second nano hair (41) So that the heat generated in the heat generating substrate 10 can be smoothly conducted to the diverging substrate 20.

Hereinafter, a heat radiation structure according to another embodiment of the present invention will be described.

4 is an enlarged cross-sectional view illustrating a heat radiation structure according to another embodiment of the present invention.

Referring to FIG. 4, the heat-radiating structure according to another embodiment of the present invention includes a heat-generating substrate 10, a radiating substrate 20, and a nano-hair layer.

Heat is generated in the heat generating substrate (10). The heat generating substrate 10 according to another embodiment of the present invention is the same as the heat generating substrate 10 according to the embodiment of the present invention, and a description thereof will be omitted.

The heat generated in the heat generating substrate 10 is dissipated from the diverging substrate 20. The radiating substrate 20 is bonded to the heat generating substrate 10. The radiating substrate 20 according to another embodiment of the present invention has the same configuration as the radiating substrate 20 according to the embodiment of the present invention, and a description thereof will be omitted.

The nano-hair layer is bonded to the heat-generating substrate 10 and the diverging substrate 20, respectively. The nano-hair layer is a thermally conductive nano-hair layer according to an embodiment of the present invention and includes a thermally conductive first nano-hair layer 30 coupled to the heat-generating substrate 10, And a thermally conductive second nano-hair layer (40). The first nano-hair layer 30 and the second nano-hair layer 40 may be laminated and fixed to the heating substrate 10 and the diverging substrate 20, respectively.

The first nano-hair layer 30 has a plurality of nano-sized thermally conductive first nano-hair 31 protruding toward the diverging substrate 20. The second nano-hair layer 40 is formed with a plurality of nano-sized thermally conductive second nano-hair 41 cross-linked with the first nano-hair 31. The second nano hair (41) protrudes toward the diverging base (20). The first nano-hair layer 31 and the second nano-hair layer 41 are formed on the first nano-hair layer 30 and the second nano-hair layer 40 by known various nano- Respectively.

Particularly, each of the first nano hair 31 and the second nano hair 41 has a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less. More specifically, the diameter of the first nano hair (31) and the diameter of the second nano hair (41) may be 100 nm or more and 200 nm or less, respectively.

If the diameter of the first nano-hair 31 and the diameter of the second nano-hair 41 are smaller than the above-described critical ranges, the heat generated by the heat-generating substrate 10 may cause deterioration of the nano- If the diameter of the first nano hair 31 and the diameter of the second nano hair 41 are respectively greater than the critical range, the first nano hair 31 and the second nano hair 41 may be damaged, It is difficult for the first nano hair 31 and the second nano hair 41 to intersect with each other so that the first nano hair 31 and the second nano hair 41 are stacked It is difficult to expect the effect of increasing the contact area according to the development.

If the length of the first nano hair 31 and the length of the second nano hair 41 are more than 10 micrometers, the first nano hair 31 and the second nano hair 41 may be separated, And the first nano hair 31 and the second nano hair 41 may be interfered with each other according to the tilting of the first nano hair 31 or the second nano hair 41, The first nano hair 31 or the second nano hair 41 may be broken at the crossing of the nano hair 41.

However, when the first nano hair 31 and the second nano hair 41 form the above-mentioned critical range, the first nano hair 31 and the second nano hair 41 are prevented from being damaged. The first nano hair (31) and the second nano hair (41) are maintained in a protruding state to facilitate cross-coupling of the first nano hair (31) and the second nano hair (41) , It is possible to suppress or prevent interference of the first nano hair (31) and the second nano hair (41) to cross-linking.

The first nano hair layer 30 and the first nano hair layer 31 are made of the same material and the second nano hair layer 40 and the second nano hair layer 41 are made of the same material . Hereinafter, the first nano hair 31 and the second nano hair 41 will be described.

The first nano hair 31 and the second nano hair 41 may be made of a polymer material. In particular, the first nano hair 31 and the second nano hair 41 may be formed of at least one of polycarbonate and polyurethane. When the first nano hair 31 and the second nano hair 41 include the polycarbonate material, the diameter and the protrusion length of the first nano hair 31 and the second nano hair 41 are Can be stably formed. When the first nano-hair 31 and the second nano-hair 41 include a polyurethane material, the flexibility or elasticity of the first nano-hair 31 and the second nano- It is possible to smoothly cross-link the first nano-hair 31 and the second nano-hair 41 in the combination of the heat-generating substrate 10 and the diverging substrate 20. [

The first nano hair 31 and the second nano hair 41 may further include at least one of a carbon nanotube (CNT), a graphene, and a metal powder. At this time, the metal powder may include at least one of aluminum, an aluminum alloy, copper, and a copper alloy.

As described above, the first nano hair (31) and the second nano hair (41) are further mixed with the additive as described above, whereby the thermal conductivity of the first nano hair (31) and the second nano hair (41) So that the heat generated in the heat generating substrate 10 can be smoothly conducted to the diverging substrate 20.

According to the heat conductive nano hair layer and the heat radiation structure using the heat conductive nano hair layer described above, when the heat generating substrate 10 and the diverging substrate 20 are combined, the contact area between the two substrates is increased, the contact heat resistance is reduced, Heat transfer can be promoted. Further, deterioration of the conduction heat transfer performance can be prevented even when the heat dissipation structure is repeatedly disassembled and assembled in maintenance.

The first nano hair 31 and the second nano hair 41 can be easily processed in the heat generating substrate 10 and the diverging substrate 20, The first nano hair 31 and the second nano hair 41 can be prevented from being damaged.

It is also possible to improve the thermal conductivity and flexibility of the first nano hair 31 and the second nano hair 41 and to improve the thermal conductivity and flexibility of the first nano hair layer 31 and the second nano hair layer 41 in the heat generating substrate 10 and the diverging substrate 20, 30 and the second nano-hair layer 40 can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Modify or modify the Software.

≪ Background Art &
1: heat generating substrate 2: diverging substrate 3: thermoconductive liquid
<Invention>
10: heat generating substrate 20: diverging substrate 30: first nano hair layer
31: first nano hair 40: second nano hair layer 41: second nano hair

Claims (6)

A heat generating substrate on which heat is generated; And
And a diverging substrate bonded to the heating substrate so as to radiate heat generated from the heating substrate,
The nano-sized thermally conductive first nano-hair is protruded from the heat generating base,
The nano-sized thermally conductive second nano-hair cross-linked with the first nano-hair is protruded and formed on the diverging base,
Wherein the first nano hair and the second nano hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less. A heat generating substrate on which heat is generated;
A radiating substrate coupled to the heating substrate to radiate heat generated from the heating substrate;
A thermally conductive first nano-hair layer coupled to the heating substrate and having nano-sized first nano-hair protruding toward the diverging substrate; And
And a thermally conductive second nano-hair layer coupled to the diverging substrate and having nano-sized second nano-hair protruding toward the heating substrate so as to be cross-linked with the first nano-hair,
Wherein the first nano hair and the second nano hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less. 3. The method according to claim 1 or 2,
Wherein the first nano-hair and the second nano-hair include a polymer material composed of at least one of polycarbonate and polyurethane. The method of claim 3,
Wherein the first nano-hair and the second nano-hair further comprise at least one of a carbon nanotube (CNT), a graphene, and a metal powder. 5. The method of claim 4,
Wherein the metal powder comprises at least one of aluminum, an aluminum alloy, copper, and a copper alloy. A thermally conductive first nano-hair layer bonded to a heat generating substrate on which heat is generated and having nano-sized first nano-hair protruding; And
A thermally conductive second nano-hair layer coupled to a radiating substrate on which heat generated from the heat generating substrate is emitted and having a nano-sized second nano-hair protruding toward the heating substrate so as to be cross-linked with the first nano- Including,
Wherein the first nano hair and the second nano hair each have a diameter of 100 nm or more and 500 nm or less and a length of 10 m or less.
KR1020150167343A 2015-11-27 2015-11-27 Nano hair layer and radiant heat structure using the same KR101842522B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102219837B1 (en) * 2020-09-16 2021-02-24 오명근 Hair dryer with carbon crystal
WO2023046289A1 (en) * 2021-09-24 2023-03-30 Huawei Technologies Co., Ltd. Cooled power module package

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010192661A (en) 2009-02-18 2010-09-02 Sumitomo Electric Ind Ltd Heat radiation component and method of manufacturing the same, and device and method for radiating heat using the heat radiation component
JP5356972B2 (en) * 2009-10-20 2013-12-04 新光電気工業株式会社 Heat dissipating component, manufacturing method thereof, and semiconductor package
JP5714928B2 (en) * 2011-02-09 2015-05-07 日東電工株式会社 Fibrous columnar structure aggregate and heat dissipation member
CN103367275B (en) 2013-07-10 2016-10-05 华为技术有限公司 A kind of interface conducting strip and preparation method thereof, cooling system
JP2015216199A (en) 2014-05-09 2015-12-03 新光電気工業株式会社 Semiconductor device, heat conduction member, and method for manufacturing semiconductor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102219837B1 (en) * 2020-09-16 2021-02-24 오명근 Hair dryer with carbon crystal
WO2023046289A1 (en) * 2021-09-24 2023-03-30 Huawei Technologies Co., Ltd. Cooled power module package

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