CN107722942A - Phase transformation high heat conduction boundary material and preparation method thereof - Google Patents
Phase transformation high heat conduction boundary material and preparation method thereof Download PDFInfo
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- CN107722942A CN107722942A CN201711105348.7A CN201711105348A CN107722942A CN 107722942 A CN107722942 A CN 107722942A CN 201711105348 A CN201711105348 A CN 201711105348A CN 107722942 A CN107722942 A CN 107722942A
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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Abstract
The present invention relates to a kind of phase transformation high heat conduction boundary material and preparation method thereof; phase transformation high heat conduction boundary material includes phase transformation high heat conduction interface material; above phase transformation high heat conduction interface material and bottom surface is respectively provided with protection film layer; the protection film layer of above phase transformation high heat conduction interface material and bottom surface is PET mould release membrances, the one or more in PE mould release membrances, release liners, and phase transformation high heat conduction interface material includes main body composite phase-change material base material, high heat conduction filler grain and modified additive.Phase transformation high heat conduction boundary material of the present invention has good thermal cycling stability, impact resistance.
Description
Technical field
The present invention relates to phase-change heat conductive material field, and in particular to a kind of phase transformation high heat conduction boundary material and its preparation side
Method.
Background technology
Hyundai electronicses component integrated level, the complexity of circuit design are being continuously increased, in smaller area, thinner thickness
Under degree, cooling requirements caused by these multifunction electronic element heatings are also harsher, and traditional boundary material has met
Not heat transfer demand.
Traditional interface material (heat-conducting glue band, heat-conducting silica gel sheet, heat-conducting silicone grease etc.) has the defects of its is obvious, as adhesive tape is led
Hot property is low (1w/mk or so), and heat-conducting silica gel sheet can not accomplish very thin thickness (T >=0.3mm), heat-conducting silicone grease performance shakiness
It is fixed, the problems such as being dried easily is flowed out, and heat conduction with phase change boundary material can not only integrate the advantage of various product and have it special
Different hot property advantage.
Although existing phase-change heat conductive material can have wellability good under operability and working condition, low-heat
Resistance, but its matrix resin backbone limits the stability of its thermal cycle, impact resistance, after recycling, conductive particle
Transport phenomena is serious, and thermal conducting path is very unstable, it is easy to influences thermal conducting function, causes device damage.
The content of the invention
It is an object of the invention to provide a kind of phase transformation high heat conduction boundary material and preparation method thereof, to solve existing skill
The problem of phase-change heat conductive material heat endurance difference in art.
One aspect of the present invention provides a kind of phase transformation high heat conduction boundary material, including phase transformation high heat conduction interface material, institute
State above phase transformation high heat conduction interface material and bottom surface is respectively provided with protection film layer.
Further, the protection film layer of above the phase transformation high heat conduction interface material and bottom surface is PET mould release membrances, PE
One or more in mould release membrance, release liners.
Further, the phase transformation high heat conduction interface material includes main body composite phase-change material base material, high heat conduction filler
Particle and modified additive.
Further, the main body composite phase-change material base material includes multilayer crosslinking net synthesis macromolecule, phase-change material
With saturated alkane class additive.
Further, the multilayer crosslinking net synthesis macromolecule is in polyethylene, polystyrene, alkadienes, polybutene
One or more of different melting points synthesis macromolecule.
Further, the phase-change material is the one or more in polynary alkanols, fat hydrocarbon, fatty acid.
Further, the alkanes additive is cycloalkane and/or long chain alkane.
Further, the high heat conduction filler grain be BN, AlN, SiC, aluminium powder, silver powder, one kind in alumina powder or
Several mixtures.
Further, the modified additive is crosslinking agent, coupling agent, antioxidant, tackifier, one kind or several of reinforcing agent
Kind.
Another aspect of the present invention provides a kind of preparation method of phase transformation high heat conduction boundary material, comprises the following steps：
1) dystectic synthesis macromolecule and alkanes additive are added in reactor, after 160 DEG C are stirred 1 hour, added
Enter the synthesis macromolecule of low melting point, cool to 120 DEG C and stir 30 minutes, add phase-change material and modified additive, 120 DEG C of stirrings 1
After hour, the high heat conduction filler grain through coupling agent surface treatment is added, 90-100 DEG C is cooled to and is stirred under vacuum 40 minutes, take off
Bubble；
2) it is upper and lower to cover diaphragm after step 1) products therefrom being crossed into heating platform melting, roll to obtain thickness through calender
For 0.15-0.25mm phase transformation high heat conduction boundary material；
Wherein, the mass percent of each component is：
Beneficial effect using the invention described above technical scheme is：
Phase transformation high heat conduction boundary material of the present invention has good thermal cycling stability, impact resistance, is specially：
1) product of the present invention uses phase-change material material is completed phase transformation within specified temperatures as functional filler,
Interfacial air is excluded completely in solid-state to molten state changes, and greatly reduces thermal contact resistance, and benefit from phase transformation material
The high fever break value of material, the hot shock-absorbing capacity that product has can play a protective role in electronic component temperature shock；
2) product of the present invention is multi-layer structure design, and high heat conduction phase-change material is wrapped in the netted synthesis macromolecule of multilayer,
Sandwich construction not only ensure that stability (do not spill over) of the material when molten state works, and special network structure will not increase
Heat is touched in adjunction, has splendid repeatable and few waste；
3) high heat conduction nitride, oxide coated metal particle, arrange in pairs or groups to form high-efficiency heat conduction path by optimal particle diameter,
Not only make material that there is splendid heat conductivility, and metallic can be effectively protected, ensure that under thermal shock, thermal cycle
Stability.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.
Phase transformation high heat conduction boundary material of the present invention, including phase transformation high heat conduction interface material, phase transformation high heat conduction boundary material
Above layer and bottom surface is respectively provided with protection film layer；The protection film layer of above phase transformation high heat conduction interface material and bottom surface is PET
One or more in mould release membrance, PE mould release membrances, release liners；Phase transformation high heat conduction interface material includes main body composite phase-change material
Base material, high heat conduction filler grain and modified additive.
Main body composite phase-change material base material includes multilayer crosslinking net synthesis macromolecule, phase-change material and saturated alkane class and added
Add agent；Multilayer crosslinking net synthesis macromolecule is that the one or more in polyethylene, polystyrene, alkadienes, polybutene are different
The synthesis macromolecule of fusing point；Phase-change material is the one or more in polynary alkanols, fat hydrocarbon, fatty acid；Alkanes
Additive is cycloalkane and/or long chain alkane.
High heat conduction filler grain is one or more of mixtures in BN, AlN, SiC, aluminium powder, silver powder, alumina powder；
Modified additive is crosslinking agent, coupling agent, antioxidant, tackifier, the one or more of reinforcing agent.
Embodiment 1
The mass percent of each raw material is：
1) dystectic synthesis macromolecule and alkanes additive are added in reactor, after 160 DEG C are stirred 1 hour, added
Enter the synthesis macromolecule of low melting point, cool to 120 DEG C and stir 30 minutes, add phase-change material and modified additive, 120 DEG C of stirrings 1
After hour, the high heat conduction filler grain through coupling agent surface treatment is added, 90-100 DEG C is cooled to and is stirred under vacuum 40 minutes, take off
Bubble；
2) it is upper and lower to cover diaphragm after step 1) products therefrom being crossed into heating platform melting, roll to obtain thickness through calender
For 0.15mm phase transformation high heat conduction boundary material.
Embodiment 2
The mass percent of each raw material is：
1) dystectic synthesis macromolecule and alkanes additive are added in reactor, after 160 DEG C are stirred 1 hour, added
Enter the synthesis macromolecule of low melting point, cool to 120 DEG C and stir 30 minutes, add phase-change material and modified additive, 120 DEG C of stirrings 1
After hour, the high heat conduction filler grain through coupling agent surface treatment is added, 90-100 DEG C is cooled to and is stirred under vacuum 40 minutes, take off
Bubble；
2) it is upper and lower to cover diaphragm after step 1) products therefrom being crossed into heating platform melting, roll to obtain thickness through calender
For 0.25mm phase transformation high heat conduction boundary material.
The performance of phase transformation high heat conduction boundary material prepared by embodiment 1-2 is as follows：
It follows that phase transformation high heat conduction boundary material of the present invention has higher heat conductivility, and with good
Thermal cycling stability, impact resistance.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of phase transformation high heat conduction boundary material, it is characterised in that including phase transformation high heat conduction interface material, the phase, which uprises, to be led
Above thermal interface material layer and bottom surface is respectively provided with protection film layer.
2. phase transformation high heat conduction boundary material according to claim 1, it is characterised in that the phase transformation high heat conduction boundary material
The protection film layer of above layer and bottom surface is PET mould release membrances, the one or more in PE mould release membrances, release liners.
3. phase transformation high heat conduction boundary material according to claim 1, it is characterised in that the phase transformation high heat conduction boundary material
Layer includes main body composite phase-change material base material, high heat conduction filler grain and modified additive.
4. phase transformation high heat conduction boundary material according to claim 3, it is characterised in that the main body composite phase-change material base
Material includes multilayer crosslinking net synthesis macromolecule, phase-change material and saturated alkane class additive.
5. phase transformation high heat conduction boundary material according to claim 4, it is characterised in that the multilayer crosslinking net synthesis is high
Molecule is the synthesis macromolecule of polyethylene, polystyrene, alkadienes, one or more of different melting points in polybutene.
6. phase transformation high heat conduction boundary material according to claim 4, it is characterised in that the phase-change material is polynary alkanol
One or more in class, fat hydrocarbon, fatty acid.
7. phase transformation high heat conduction boundary material according to claim 4, it is characterised in that the alkanes additive is cycloalkanes
Hydrocarbon and/or long chain alkane.
8. phase transformation high heat conduction boundary material according to claim 3, it is characterised in that the high heat conduction filler grain is
One or more of mixtures in BN, AlN, SiC, aluminium powder, silver powder, alumina powder.
9. phase transformation high heat conduction boundary material according to claim 3, it is characterised in that the modified additive be crosslinking agent,
Coupling agent, antioxidant, tackifier, the one or more of reinforcing agent.
10. the preparation method of phase transformation high heat conduction boundary material described in a kind of claim 1, it is characterised in that comprise the following steps：
1) dystectic synthesis macromolecule and alkanes additive are added in reactor, after 160 DEG C are stirred 1 hour, added low
The synthesis macromolecule of fusing point, cool to 120 DEG C and stir 30 minutes, add phase-change material and modified additive, 120 DEG C are stirred 1 hour
Afterwards, the high heat conduction filler grain through coupling agent surface treatment is added, 90-100 DEG C is cooled to and is stirred under vacuum 40 minutes, deaeration；
2) by step 1) products therefrom cross heating platform melting after, it is upper and lower to cover diaphragm, roll to obtain thickness through calender be
0.15-0.25mm phase transformation high heat conduction boundary material；
Wherein, the mass percent of each component is：
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913183A (en) * | 2019-04-12 | 2019-06-21 | 哈尔滨理工大学 | A kind of insulating heat-conductive preparation of sections method with phase-change characteristic |
| CN110831400A (en) * | 2019-10-08 | 2020-02-21 | 裕克施乐塑料制品（太仓）有限公司 | Three-layer integrated efficient high-strength heat conducting fin and preparation method thereof |
| CN110978696A (en) * | 2019-12-31 | 2020-04-10 | 贺迈新能源科技（上海）有限公司 | Phase-change temperature control film and preparation method thereof |
| CN111592863A (en) * | 2019-02-21 | 2020-08-28 | 天津莱尔德电子材料有限公司 | Thermal interface material |
| CN111995991A (en) * | 2020-07-27 | 2020-11-27 | 深圳陶陶科技有限公司 | Thermal interface material and preparation method thereof |
| WO2022133850A1 (en) * | 2020-12-24 | 2022-06-30 | Dow Global Technologies Llc | Thermal interface material |
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| CN111592863A (en) * | 2019-02-21 | 2020-08-28 | 天津莱尔德电子材料有限公司 | Thermal interface material |
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| CN110831400A (en) * | 2019-10-08 | 2020-02-21 | 裕克施乐塑料制品（太仓）有限公司 | Three-layer integrated efficient high-strength heat conducting fin and preparation method thereof |
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