CN108307606A - A kind of phase change radiator structure and preparation method thereof - Google Patents
A kind of phase change radiator structure and preparation method thereof Download PDFInfo
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- CN108307606A CN108307606A CN201711413580.7A CN201711413580A CN108307606A CN 108307606 A CN108307606 A CN 108307606A CN 201711413580 A CN201711413580 A CN 201711413580A CN 108307606 A CN108307606 A CN 108307606A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of phase change radiator structure and preparation method thereof, including aluminium foil, the applied on top surface of the aluminium foil has flame-retarded heat-conducting layer of silica gel, and phase-change material layers are coated on bottom surface.The flame-retarded heat-conducting layer of silica gel is prepared by the following raw material of parts by weight meter：28 parts of methyl vinyl silicone rubber, 15 20 parts of vinyl silica gel, 18 25 parts of dimethicone, 0.5 2 parts of containing hydrogen silicone oil, 0.5 1 parts of platinum catalyst, 20 40 parts of aluminium hydroxide, 20 40 parts of magnesium hydroxide, 10 20 parts of nano silicon dioxide, 10 20 parts of hollow glass microbead.Phase change radiator structure of the present invention has the characteristics that good thermal conductivity, good flame resistance, flexible compressible, while also having phase-change accumulation energy characteristic.
Description
Technical field
The present invention relates to a kind of radiator structures, and in particular to a kind of phase change radiator structure and preparation method thereof.
Background technology
Cooling fin is a kind of device to the easy heat-generating electronic elements heat dissipation in electric appliance, mostly by aluminium alloy, brass or bronze
Make plate, sheet, splintery etc., if cpu central processing unit will use sizable cooling fin in computer, power supply in television set
Pipe, row are managed, and the power tube in amplifirer will use cooling fin.General cooling fin in use will be in electronic component and cooling fin
Contact surface applies last layer heat-conducting silicone grease, and the heat that component is sent out is made more effectively to be transmitted on cooling fin, then is dissipated through cooling fin
It is dealt into surrounding air.
Metal fin is mostly used in the prior art, it is interface characteristics although metal fin thermal coefficient itself is high
Matter is very poor, there is prodigious thermal contact resistance when being contacted with heat source, cannot heat be transmitted to metal from heat source well, to influence
Heat dissipation.
Invention content
In view of the deficiencies of the prior art, first purpose of the invention is to be to provide a kind of phase change radiator structure and its system
Make method, which has the characteristics that good thermal conductivity, good flame resistance, flexible compressible, while also having phase transformation storage
It can characteristic.
Second object of the present invention is to provide for the production method for a kind of phase change radiator structure and preparation method thereof.
Realize that first purpose of the present invention can reach by adopting the following technical scheme that：
A kind of phase change radiator structure, including aluminium foil, which is characterized in that the applied on top surface of the aluminium foil has flame-retarded heat-conducting silicon
Glue-line is coated with phase-change material layers on bottom surface.
Preferably, the flame-retarded heat-conducting layer of silica gel is prepared by the following raw material of parts by weight meter：Methyl ethylene silicon
2-8 parts of rubber, 15-20 parts of vinyl silica gel, 18-25 parts of dimethicone, 0.5-2 parts of containing hydrogen silicone oil, platinum catalyst 0.5-1
Part, 20-40 parts of aluminium hydroxide, 20-40 parts of magnesium hydroxide, 10-20 parts of nano silicon dioxide, 10-20 parts of hollow glass microbead.
Preferably, the weight ratio of the aluminium hydroxide and magnesium hydroxide is 1.2-2:1.
Preferably, the weight ratio of the aluminium hydroxide and magnesium hydroxide is 1.5:1.
Preferably, the grain size of the nano silicon dioxide is 1.5-10nm.
Preferably, the grain size of the hollow glass microbead is 30-50 μm.
Preferably, the thermal coefficient of the phase-change material layers is 1.5-2.0w/mk, and phase transition temperature is 50-60 DEG C.
Preferably, the thickness of the aluminium foil is 0.02-0.04mm, the thickness of the flame-retarded heat-conducting silica gel is 0.03-
The thickness of 0.8mm, the phase-change material layers are 0.03-0.8mm.
Realize that second object of the present invention can reach by adopting the following technical scheme that：
A kind of production method of phase change radiator structure, which is characterized in that including：
Material preparation step：Aluminium foil, flame-retarded heat-conducting silica gel base-material, phase-change material base-material are weighed respectively；
Vulcanisation step：Flame-retarded heat-conducting silica gel base-material in material preparation step is evenly applied on the top surface of aluminium foil, is positioned over
Vulcanized in continuous tunnel furnace, after the completion of vulcanization, forms flame-retarded heat-conducting layer of silica gel；
Hot coating step：Phase-change material base-material uniform heat in material preparation step is coated on the aluminium foil after completing vulcanisation step
Bottom surface on, controlled at 65-75 DEG C, form phase-change material layers to get to phase change radiator structure.
Preferably, in vulcanisation step, the parameter of the process of vulcanization is set as：One area's temperature is 125 DEG C, and two area's temperature are
135 DEG C, three area's temperature are 140 DEG C, and four area's temperature are 145 DEG C, and the vulcanization time of each humidity province is 1.5 minutes.
The beneficial effects of the present invention are：
1, the aluminium foil of phase change radiator structure of the invention has excellent heat conductivility.The thermal coefficient of aluminium also reaches
270w/mk has powerful heat sinking function.It is attached with flame-retarded heat-conducting layer of silica gel additionally, due to aluminium foil surface, heat conduction silicone is
Elastomer has good flexibility and compressibility, while the phase-change material layers of aluminium foil surface attachment, has from solid phase to liquid
The phase transition process of phase will generate in phase transition process and absorb a large amount of latent heat, can preferably solve in short-term, periodic duty
Powerful device or the climate control issues of equipment are influenced by periodically good heat flow density.Therefore, which has
There are good thermal conductivity, good flame resistance, flexible compressible feature, while also there is phase-change accumulation energy characteristic.
2, it is added to aluminium hydroxide, magnesium hydroxide in flame-retarded heat-conducting layer of silica gel of the invention, there is excellent flame retardant effect,
Nano silicon dioxide, hollow glass microbead are also added simultaneously, heat-resisting quantity is greatly improved.
Specific implementation mode
In the following, in conjunction with specific implementation mode, the present invention is described further, in following embodiment, unless otherwise specified,
All raw materials are commercially available.
Embodiment 1：
A kind of production method of phase change radiator structure, including：
Material preparation step：Aluminium foil, flame-retarded heat-conducting silica gel base-material, phase-change material base-material are weighed respectively；Wherein, the flame-retarded heat-conducting
Layer of silica gel is prepared by the following raw material of parts by weight meter：6 parts of methyl vinyl silicone rubber, 18 parts of vinyl silica gel, dimethyl
20 parts of silicone oil, 1 part of containing hydrogen silicone oil, 0.8 part of platinum catalyst, 30 parts of aluminium hydroxide, 20 parts of magnesium hydroxide, nano silicon dioxide 15
Part, 15 parts of hollow glass microbead.
Vulcanisation step：Flame-retarded heat-conducting silica gel base-material in material preparation step is evenly applied on the top surface of aluminium foil, is positioned over
Vulcanized in continuous tunnel furnace, after the completion of vulcanization, forms flame-retarded heat-conducting layer of silica gel；The parameter of the process of vulcanization is set as：One area's temperature
Degree is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 140 DEG C, and four area's temperature are 145 DEG C, when the vulcanization of each humidity province
Between be 1.5 minutes.It designs in this way, heat conductive silica gel can be made to be bonded in the curing process with aluminium foil and be integrated.
Hot coating step：Phase-change material base-material uniform heat in material preparation step is coated on the aluminium foil after completing vulcanisation step
Bottom surface on, controlled at 70 DEG C, form phase-change material layers to get to phase change radiator structure.
The thickness of the aluminium foil is 0.03mm, and the thickness of the flame-retarded heat-conducting silica gel is 0.05mm, the phase-change material layers
Thickness be 0.05mm；
After testing：The thermal coefficient of the aluminium reaches 270w/mk.The thermal coefficient of the heat conduction silicone is 3.2w/mk；
Its maximum compression ratio is 72%, limit oxygen index 33.The thermal coefficient of the phase-change material layers is 1.5w/mk, phase transition temperature
It is 55 DEG C, quantity of heat storage 190J/g.
Embodiment 2：
A kind of production method of phase change radiator structure, including：
Material preparation step：Aluminium foil, flame-retarded heat-conducting silica gel base-material, phase-change material base-material are weighed respectively；Wherein, the flame-retarded heat-conducting
Layer of silica gel is prepared by the following raw material of parts by weight meter：2 parts of methyl vinyl silicone rubber, 15 parts of vinyl silica gel, dimethyl
18 parts of silicone oil, 0.5 part of containing hydrogen silicone oil, 0.5 part of platinum catalyst, 24 parts of aluminium hydroxide, 20 parts of magnesium hydroxide, nano silicon dioxide
10 parts, 10 parts of hollow glass microbead.
Vulcanisation step：Flame-retarded heat-conducting silica gel base-material in material preparation step is evenly applied on the top surface of aluminium foil, is positioned over
Vulcanized in continuous tunnel furnace, after the completion of vulcanization, forms flame-retarded heat-conducting layer of silica gel；The parameter of the process of vulcanization is set as：One area's temperature
Degree is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 140 DEG C, and four area's temperature are 145 DEG C, when the vulcanization of each humidity province
Between be 1.5 minutes.It designs in this way, heat conductive silica gel can be made to be bonded in the curing process with aluminium foil and be integrated.
Hot coating step：Phase-change material base-material uniform heat in material preparation step is coated on the aluminium foil after completing vulcanisation step
Bottom surface on, controlled at 75 DEG C, form phase-change material layers to get to phase change radiator structure.
The thickness of the aluminium foil is 0.02mm, and the thickness of the flame-retarded heat-conducting silica gel is 0.03mm, the phase-change material layers
Thickness be 0.03mm；
After testing：The thermal coefficient of the aluminium reaches 270w/mk.The thermal coefficient of the flame-retarded heat-conducting layer of silica gel is
2.9w/mk, maximum compression ratio 64%, limit oxygen index 30.The thermal coefficient of the phase-change material layers is 1.5w/mk,
Phase transition temperature is 55 DEG C, quantity of heat storage 190J/g.
Embodiment 3：
A kind of production method of phase change radiator structure, including：
Material preparation step：Aluminium foil, flame-retarded heat-conducting silica gel base-material, phase-change material base-material are weighed respectively；Wherein, the flame-retarded heat-conducting
Layer of silica gel is prepared by the following raw material of parts by weight meter：8 parts of methyl vinyl silicone rubber, 20 parts of vinyl silica gel, dimethyl
25 parts of silicone oil, 2 parts of containing hydrogen silicone oil, 1 part of platinum catalyst, 30 parts of aluminium hydroxide, 40 parts of magnesium hydroxide, nano silicon dioxide 20
Part, 20 parts of hollow glass microbead.
Vulcanisation step：Flame-retarded heat-conducting silica gel base-material in material preparation step is evenly applied on the top surface of aluminium foil, is positioned over
Vulcanized in continuous tunnel furnace, after the completion of vulcanization, forms flame-retarded heat-conducting layer of silica gel；The parameter of the process of vulcanization is set as：One area's temperature
Degree is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 140 DEG C, and four area's temperature are 145 DEG C, when the vulcanization of each humidity province
Between be 1.5 minutes.It designs in this way, heat conductive silica gel can be made to be bonded in the curing process with aluminium foil and be integrated.
Hot coating step：Phase-change material base-material uniform heat in material preparation step is coated on the aluminium foil after completing vulcanisation step
Bottom surface on, controlled at 65-75 DEG C, form phase-change material layers to get to phase change radiator structure.
The thickness of the aluminium foil is 0.04mm, and the thickness of the flame-retarded heat-conducting silica gel is 0.8mm, the phase-change material layers
Thickness is 0.8mm；
After testing：The thermal coefficient of the aluminium reaches 270w/mk.The thermal coefficient of the flame-retarded heat-conducting layer of silica gel is
2.7w/mk, maximum compression ratio 68%, limit oxygen index 29.The thermal coefficient of the phase-change material layers is 1.5w/mk,
Phase transition temperature is 55 DEG C, quantity of heat storage 190J/g.
Comparative example 1：
This comparative example compared with Example 1, difference lies in：The flame-retarded heat-conducting layer of silica gel by parts by weight meter following raw material
It is prepared：6 parts of methyl vinyl silicone rubber, 18 parts of vinyl silica gel, 20 parts of dimethicone, 1 part of containing hydrogen silicone oil, platinum are urged
0.8 part of agent.
After testing：The thermal coefficient of the aluminium reaches 270w/mk.The thermal coefficient of the heat conduction silicone is 3.2w/mk；
Its maximum compression ratio is 70%, limit oxygen index 26.The thermal coefficient of the phase-change material layers is 1.5w/mk, phase transition temperature
It is 55 DEG C, quantity of heat storage 190J/g.
For those skilled in the art, technical solution that can be as described above and design are made other each
Kind is corresponding to be changed and deforms, and all these change and deform the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (10)
1. a kind of phase change radiator structure, including aluminium foil, which is characterized in that the applied on top surface of the aluminium foil has flame-retarded heat-conducting silica gel
Layer, phase-change material layers are coated on bottom surface.
2. phase change radiator structure according to claim 1, which is characterized in that the flame-retarded heat-conducting layer of silica gel is by parts by weight meter
Following raw material be prepared：2-8 parts of methyl vinyl silicone rubber, 15-20 parts of vinyl silica gel, 18-25 parts of dimethicone,
0.5-2 parts of containing hydrogen silicone oil, 0.5-1 parts of platinum catalyst, 20-40 parts of aluminium hydroxide, 20-40 parts of magnesium hydroxide, nanometer titanium dioxide
10-20 parts of silicon, 10-20 parts of hollow glass microbead.
3. phase change radiator structure according to claim 1, which is characterized in that the weight of the aluminium hydroxide and magnesium hydroxide
Than for 1.2-2:1.
4. phase change radiator structure according to claim 3, which is characterized in that the weight of the aluminium hydroxide and magnesium hydroxide
Than being 1.5:1.
5. phase change radiator structure according to claim 1, which is characterized in that the grain size of the nano silicon dioxide is 1.5-
10nm。
6. phase change radiator structure according to claim 1, which is characterized in that the grain size of the hollow glass microbead is 30-
50μm。
7. phase change radiator structure according to claim 1, which is characterized in that the thermal coefficient of the phase-change material layers is
1.5-2.0w/mk phase transition temperature is 50-60 DEG C.
8. phase change radiator structure according to claim 1, which is characterized in that the thickness of the aluminium foil is 0.02-0.04mm,
The thickness of the flame-retarded heat-conducting silica gel is 0.03-0.8mm, and the thickness of the phase-change material layers is 0.03-0.8mm.
9. a kind of production method of phase change radiator structure according to any one of claims 1 to 8, which is characterized in that packet
It includes：
Material preparation step：Aluminium foil, flame-retarded heat-conducting silica gel base-material, phase-change material base-material are weighed respectively；
Vulcanisation step：Flame-retarded heat-conducting silica gel base-material in material preparation step is evenly applied on the top surface of aluminium foil, tunnel is positioned over
Vulcanized in stove, after the completion of vulcanization, forms flame-retarded heat-conducting layer of silica gel；
Hot coating step：Phase-change material base-material uniform heat in material preparation step is coated on to the bottom of the aluminium foil after completing vulcanisation step
On face, controlled at 65-75 DEG C, phase-change material layers are formed to get to phase change radiator structure.
10. the production method of phase change radiator structure according to claim 9, which is characterized in that in vulcanisation step, vulcanization
The parameter of process is set as：One area's temperature is 125 DEG C, and two area's temperature are 135 DEG C, and three area's temperature are 140 DEG C, and four area's temperature are
145 DEG C, the vulcanization time of each humidity province is 1.5 minutes.
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| CN201711413580.7A CN108307606A (en) | 2017-12-24 | 2017-12-24 | A kind of phase change radiator structure and preparation method thereof |
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| CN201711413580.7A CN108307606A (en) | 2017-12-24 | 2017-12-24 | A kind of phase change radiator structure and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020039761A1 (en) * | 2018-08-23 | 2020-02-27 | 信越化学工業株式会社 | Thermally-conductive silicone composition and thermally-conductive silicone cured product |
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| WO2020039761A1 (en) * | 2018-08-23 | 2020-02-27 | 信越化学工業株式会社 | Thermally-conductive silicone composition and thermally-conductive silicone cured product |
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