CN106593933A - Heat dissipation fan material - Google Patents
Heat dissipation fan material Download PDFInfo
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- CN106593933A CN106593933A CN201611220611.2A CN201611220611A CN106593933A CN 106593933 A CN106593933 A CN 106593933A CN 201611220611 A CN201611220611 A CN 201611220611A CN 106593933 A CN106593933 A CN 106593933A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to application of a macromolecule composite material, in particular to a heat dissipation fan material. The heat dissipation fan material comprises a heat dissipation layer, a protection layer, a gluing layer and a base material layer. The heat dissipation layer is composed of one or more of graphite, nano-graphite, crystalline flake graphite, graphene, pyrolytic carbon, pyrolytic graphite, graphite powder, a carbon nano tube, carbon fiber, graphite fiber, resin, ceramic fiber, quartz fiber, metal fiber, zirconium oxide, boron nitride, silicon nitride, boron carbide, silicon carbide, magnesia powder, metasilicate fiber, calcium silicate aluminum fiber, alumina fiber, copper, aluminum, silver, tungsten and molybdenum metal powder, so that the technical problems that in the prior art, due to adoption of nonferrous metal, the weight and size are large, thickness is high, the service life is short, and the thermal conductivity coefficient is uncontrollable are solved.
Description
Technical field
The present invention relates to a kind of application of polymer composite, and in particular to a kind of radiator fan material.
Background technology
Radiator fan material is widely used in computer, notebook computer, LED illumination, communication, commutator, medical treatment and
The fields such as industrial equipment, the radiator fan material of prior art is typically using the materials such as aluminum, aluminium alloy, copper, ceramics or filler life
Produce.But it is with electronics, the expansion of electrical equipment range of application and popularization, more next to the performance and structural requirement of electronic electric equipment
It is harsher, become increasingly complex, including requiring to possess higher processing speed, higher processing frequency, less volume, lighter
Weight, higher power and other technological merits.For example in electronics, electrical equipment and system, or high-power optics device
Very high heat can be all produced in microprocessor and integrated circuit in part, but, microprocessor, integrated circuit and other electronics
Components and parts are typically only capable within the scope of limited temperature effectively normal operation.If the heat that these electronic devices and components are produced surpasses
The scope for allowing is crossed, not only their own performance is impacted, and may be caused to the performance of whole system and stably
Immeasurable infringement, so as to cause the collapse of system.
This just proposes strict requirements to the heat dissipation equipment in electronic devices and components, in order to improve electronic devices and components and its system
Performance and stability, extend its service life, reduce the ambient temperature of operation or the temperature range of increase normal table operation
It is of crucial importance.
But the radiator fan material of prior art typically adopts aluminum, aluminium alloy, copper, metal-oxide, ceramic-like materials
And make with these by materials such as the rubber-like of filler, the principle of this radiator fan material be by copper, aluminum, aluminium alloy or
Filler is by heat absorption and then is dispersed in surrounding.This radiator fan material has typically also needed to radiator shutter (radiating
Device) and fan, by fan to the forced convertion of the such as air of heat eliminating medium between radiator shutter reaching the purpose of radiating.
These prior arts are primarily present following defect：
First, weight is big, because packing density is big, for example：The density of copper is 8.96g/cm3, and aluminum is 2.7g/cm3.Weight
The overweight of amount can bring very big difficulty to the design of electronic devices and components and manufacture, and increase the weight of components and parts.
Second, take up room big, when especially electronic devices and components are harsh to space requirement, the heat conductivity of boundary material has
Limit, and it is non-adjustable.
3rd, the thermal coefficient of expansion of boundary material is too big with differing for electronic devices and components chip, when temperature change is big, holds
Easily cause chip rupture, producing flaw and luminous efficiency reduces, and causes luminous efficiency and life-span to be had a greatly reduced quality, it is impossible to reach Gao Gong
Rate, long-life technical requirements.
4th, thickness adjustable extent is limited, it is impossible to accomplish less than 100 microns of thickness.
The content of the invention
For drawbacks described above, it is an object of the invention to provide a kind of radiator fan material, to solve prior art because adopting
Non-ferrous metal and caused weight is larger, volume is larger, thickness is high, service life is short and the uncontrollable technology of thermal conductivity coefficient is asked
Topic.
It is yet another object of the invention to provide a kind of radiator fan material, to solve prior art because using non-ferrous metal
Caused weight is larger, volume is larger, thickness is high, service life is short and the uncontrollable technical problem of thermal conductivity coefficient.
For achieving the above object, present invention employs following technical scheme：
A kind of radiator fan material, is applied to electronic product radiating field, including heat dissipating layer, protective layer, adhesive layer and base
Material layer, the heat dissipating layer are received by graphite, nano-graphite, crystalline flake graphite, Graphene, pyrolytic carbon, pyrolytic graphite, graphite composite powder, carbon
Mitron, carbon fiber, graphite fibre, resin, ceramic fibre, quartz fibre, metallic fiber, zirconium oxide, boron nitride, silicon nitride, carbon
Change boron, carborundum, magnesia powder, metasilicic acid fiber, calcium aluminum silicate fibers, alumina fibre, copper, aluminum, silver, tungsten, molybdenum powder
The one of which of body or many of material composition；
The protective layer is acrylic resin and/or epoxy resin；
The adhesive layer is the adhesive that rubber and TFE mix；
The substrate layer is polyethylene (PE), polyimides (PI), polyester (PET), polyether-ether-ketone (PEEK), polyphenylene sulfide
(PPS), politef (PTFE), polypropylene (PP), Merlon (PC), polrvinyl chloride (PVC), polystyrene (PS) its
A kind of middle macromolecule membrane or carbon fiber, glass fibre, the non-woven fabrics of the one of which of aramid fiber or woven cloth or gold
Category thin film, the non-woven fabrics of the one of which of metallic fiber or fabric.
Further, the graphite fibre be asphaltic base, polyacrylonitrile (PAN) base, viscose glue base, the one of which of phenolic aldehyde base,
The graphite fibre is long graphite fibre, processed through cutter or gas breaking crusher machine short graphite fibre, or both it is mixed
Close；Resin is epoxy resin, phenolic resin, polyester resin, Lauxite, organic siliconresin, acryl resin, rubber, tetrafluoro
Vinyl, polypropylene (PP), polyethylene (PE), polyester (PET), the one of which of silicone oil；Graphite composite powder be expanded graphite, etc.
The one of which of static pressure graphite, high purity graphite.
Further, the thickness of the heat dissipating layer is 1 millimeter to 2 millimeters.
The composition of heat dissipating layer is limited further：
1st, the substrate layer is polyethylene (PE), and the heat dissipating layer is carbon fiber 10-30 weight portions, and boron nitride 10-20 is again
Amount part, carborundum 30-40 weight portions.
2nd, the substrate layer is polyethylene (PE), and the heat dissipating layer is carbon fiber 10-30 weight portions, and boron nitride 20-30 is again
Amount part, carborundum 20-30 weight portions.
3rd, the substrate layer be polyethylene (PE), the heat dissipating layer be carbon fiber 10-30 weight portions, boron nitride 5-10 weight
Part, carborundum 40-80 weight portions.
Technology as a result of more than causes the present invention compared to existing technology, has the following advantages that and good effect：
In sum, according to the radiator fan material of the present invention, heat dispersion is effectively improved, with small volume, weight
Gently, the advantage of thickness of thin, improves the service life of electronic devices and components, while the easy production and processing of this radiator fan material, root
The characteristics of having anisotropy according to the physical property of material, requires design heat conductivity according to different components and leads to heat dispersion
Hot direction, designs the radiator fan material that can be designed with orientation heat transmission function and thermal conductivity coefficient.
Specific embodiment
The following is and several preferred embodiments of the present invention are described in detail, but the present invention is not restricted to these realities
Apply example.The present invention covers any replacement, modification, equivalent method and scheme made in the spirit and scope of the present invention.In order to
Make the public have the present invention thoroughly to understand, concrete details is described in detail in present invention below preferred embodiment, and it is right
Description for those skilled in the art without these details can also understand the present invention completely.
Embodiment 1
The radiator fan material of the present embodiment includes heat dissipating layer, protective layer, adhesive layer and substrate layer, and the heat dissipating layer is by stone
Ink, nano-graphite, crystalline flake graphite, Graphene, pyrolytic carbon, pyrolytic graphite, graphite composite powder, CNT, carbon fiber, graphite are fine
Dimension, resin, ceramic fibre, quartz fibre, metallic fiber, zirconium oxide, boron nitride, silicon nitride, boron carbide, carborundum, magnesium oxide
Powder, metasilicic acid fiber, calcium aluminum silicate fibers, alumina fibre, copper, aluminum, silver, tungsten, the one of which of molybdenum powder body or wherein
Multiple material is constituted；
The protective layer is acrylic resin and/or epoxy resin；
The adhesive layer is the adhesive that rubber and TFE mix；
The substrate layer is polyethylene (PE), polyimides (PI), polyester (PET), polyether-ether-ketone (PEEK), polyphenylene sulfide
(PPS), politef (PTFE), polypropylene (PP), Merlon (PC), polrvinyl chloride (PVC), polystyrene (PS) its
A kind of middle macromolecule membrane or carbon fiber, glass fibre, the non-woven fabrics of the one of which of aramid fiber or woven cloth or gold
Category thin film, the non-woven fabrics of the one of which of metallic fiber or fabric.
The graphite fibre be asphaltic base, polyacrylonitrile (PAN) base, viscose glue base, the one of which of phenolic aldehyde base, the graphite
Fiber is long graphite fibre, processed through cutter or gas breaking crusher machine short graphite fibre, or both mixing；Resin is
Epoxy resin, phenolic resin, polyester resin, Lauxite, organic siliconresin, acryl resin, rubber, TFE,
Polypropylene (PP), polyethylene (PE), polyester (PET), the one of which of silicone oil；Graphite composite powder be expanded graphite, isostatic pressing formed graphite,
The one of which of high purity graphite.
The thickness of the heat dissipating layer is 1 millimeter to 2 millimeters.
The core concept of the present invention is that this boundary material has the anisotropy of heat conduction and heat radiation, perpendicular to interface
Heat conductivity on direction is higher, and on parallel to interface direction have high heat conductivity, and heat conductivity be can
With what is adjusted and design；The heat of electronic devices and components is transmitted on radiator fan material, and boundary material is dispersed into heat scattered again
In air on hot device or in gas channel, heat is dispersed into surrounding finally by the thermal convection current or heat radiation of air
In, so as to reach the purpose of radiating, to lift its radiating efficiency, it is to avoid electronic devices and components are because of insufficient and caused performance that radiates
The problems such as reduction or unstable and service life shorten.
First, find that protective layer is acrylic resin and/or epoxy resin by many experiments；It is to be best suitable for heat sink material
Raw material, adhesive therein is rubber and during TFE mixture, can be only achieved Expected Results.
Secondly, the radiator fan materials application of the present invention is in electronic product radiating field, for example computer, notebook computer,
LED illumination, communication, commutator, the thermal field space such as medical treatment and industrial equipment is little and requires that lightweight electronic devices and components etc. are special
Application, radiator fan material of the invention are one kind by graphite, nano-graphite, crystalline flake graphite, Graphene, pyrolytic carbon, heat
Solution graphite, graphite composite powder, CNT, carbon fiber, graphite fibre, resin, ceramic fibre, quartz fibre, metallic fiber or
Zirconium oxide, boron nitride, silicon nitride, boron carbide, carborundum, magnesia powder and natural mineral fiber such as metasilicic acid fiber, silicic acid
What the one or more of which raw materials such as calcium aluminum fiber, alumina fibre, Huo Zhetong, aluminum, silver, tungsten, molybdenum powder body made answers
Product is closed, thermal conductivity coefficient is very high, while the heat transfer property of this material is anisotropic, with higher radiation efficiency,
And thermal conductivity coefficient and heat transfer direction can be to adjust and design.In addition, this material has less density, with than passing
The heat sink material of the system such as more superioritys of copper, aluminum or aluminum alloy, are more suitable for the material of radiator fan material.
Graphite fibre is a kind of special material, and the graphite fibre of the present invention can be asphaltic base, PAN bases, viscose glue base, phenol
The one of which of aldehyde radical, heat conductivity of this material in fibre diameter direction and fibre length direction have very big difference
Property, it is liquid crystal structure under high accuracy microscope, the anisotropy with performance.Significantly, since this material exists
Particularity in performance, it is possible to the thermal conductivity coefficient of composite is adjusted according to fiber content, and can be according to fiber
Orientation adjusting the direction of heat transfer.
Graphene is also a kind of special material, and Graphene is the graphite flake separated from graphite, is only by one layer of carbon
The thin slice of atomic building, hence it is evident that thinner than traditional crystalline flake graphite or other graphite materials, performance is also significantly different, is completely not
Two kinds of same materials.This material has very big diversity with the heat conductivity in parallel scale direction in vertical scale direction,
Anisotropy with performance.Significantly, since particularity of this material in performance, it is possible to according to graphite
The content of alkene is adjusting the thermal conductivity coefficient of composite, and the direction of heat transfer can be adjusted according to the orientation of Graphene.
According to specific needs, apply the fiber in heat dissipating layer be chopped fiber, or long fibre or both
Mixing；If selecting chopped fiber as raw material, then the distribution in heat conduction and heat radiation layer middle short fiber be according to specifically into
Type technique determines the arragement direction of fiber, and a part is orientated according to design requirement, and a part is disorderly and unsystematic distribution, generally
Space network is planted, main heat transfer type is by fiber overlap joint and the common realization of medium transmission.Can be taken by adjustment
Ratio to fiber and mixed and disorderly fiber is adjusting the heat dispersion and heat dissipation direction of heat conduction and heat radiation layer.
If selecting long fibre as raw material, then distribution of the fiber in heat conduction and heat radiation layer can be to be pre-designed
, so, the heat conductivility and heat dissipation direction of final heat conduction and heat radiation layer can just be designed before manufacture and be completed.Specific heat conduction
Performance and heat dissipation direction are volume contents according to fiber in whole heat conduction and heat radiation layer adjusting.The long fibre can be
Cloth, paper, fabric, felt, adhesive-bonded fabric, preimpregnation product, multidimensional fabric, prefabricated fabric etc., and these products can basis
Need to adjust thickness and machine direction, content etc., meanwhile, these products can both be flexible, or rigid.
In structure and modal difference except more than, due to the long fibre it is intrinsic in heat conductivity, electric conductivity, creep
Property etc. aspect all there is the anisotropy of height, so the long fibre (cloth, paper, fabric, felt, adhesive-bonded fabric, preimpregnation system
Product, multidimensional fabric, prefabricated fabric etc.) also all there is the anisotropy of height at aspects such as heat conductivity, electric conductivity, creep properties.
Manufacture the long fibre such as cloth, paper, fabric, felt, adhesive-bonded fabric, preimpregnation product, multidimensional fabric, pre- weaving
The method of thing etc. includes copy paper, braiding, nonwoven acupuncture, nonwoven spun lacing, dry method nonwoven, wet method nonwoven, preimpregnation, roll-in, three-dimensional volume
Knit, to form (unidirectional or multidirectional), flexible, three-dimensional plate or block or post or other geometries of plane.
The heat dissipating layer of the radiator fan material be fabricated separately by the above raw material or with resin and other are auxiliary
Material is combined jointly such as graphite, binding agent, macromolecule membrane, metal, metal-oxide, diamond, through presoaking, being molded, be die cut,
The techniques such as vapour deposition, solidification, sintering, blending, extrusion, injection, RTM, the thickness of adjustment heat conduction and heat radiation layer, density, shape.Most
The anisotropy of whole heat conduction and heat radiation layer depends primarily on raw material fiber such as carbon fiber, graphite fibre, Graphene, crystalline flake graphite etc.
High anisotropy and content and orientation.
Compared with traditional radiator fan material, the maximum difference of radiator fan material of the present invention is its higher thermal conductivity
Coefficient and the controllability and designability in heat conduction direction, and the wide scope control of heat conduction and heat radiation thickness degree, thickness most I
To accomplish 3 nanometers, what thickness requirement was big can accomplish 2 millimeters, and other such as 10 nanometers or 20 microns depend on the needs.
According to specific needs, radiator fan material, can also include：One separated type material layer, the separated type material layer is
A kind of macromolecule membrane.One adhesive layer, the adhesive layer are acrylic, epoxy resin, phenolic resin, polyester resin, ureaformaldehyde tree
The one of which of the adhesive such as fat, organic siliconresin, acryl resin, rubber, TFE.
According to specific needs, radiator fan material, can also include：Substrate layer, for improving dielectric strength, the base
Material layer be the macromolecule membrane of PE, PI, PET, PEEK, PPS, PTFE, PP, PC, PVC, PS etc. one of which or carbon fiber,
The non-woven fabrics of the one of which or metallic film, metallic fiber of the non-woven fabrics or woven cloth of glass fibre, aramid fiber etc. etc. or
The one of which of fabric, the thickness minimum of the substrate layer can be 1 micron, and what thickness was big can be to 1 millimeter, and other are for example
10 microns or 20 microns depend on the needs.
And the method for manufacturing radiator fan material include grinding, be molded, be die cut, coating, scratching, vapour deposition, calendering, stream
Prolong, spray, RTM, hot pressing, extrusion, roll-in, sulfuration, solidification, polishing, the technique such as microwave, optional one or more of which is combined,
But it is not limited to this.The high radiator fan material of small volume, lightweight, thickness of thin, heat dispersion can be formed by these technologies
Material.The anisotropy of this radiator fan material depend primarily on the high anisotropy of raw material fiber such as graphite fibre and
Content and orientation.Compared with traditional radiator fan material, the maximum difference of radiator fan material of the present invention is which is higher
Thermal conductivity coefficient and the controllability and designability in heat conduction direction.
In sum, according to radiator fan material made by material of the invention, effectively improve and surmounted traditional dissipating
The heat dispersion of Hot-air fan material, while providing a kind of method for making ultrathin radiating fan material, this radiator fan material
Can require to adjust its thermal conductivity coefficient and direction of conducting heat according to actual Thermal Design, and under the same volume, with less
Weight, be exploitation small volume, lightweight, the high electronic devices and components of performance provide favourable working environment, while this new
The easy production and processing of type radiator fan material, and the form of radiator fan material can be solid-state, liquid or gel.
According to the radiator fan material of the present invention, the material of employing has the characteristics of conducting heat anisotropy, so radiation air
Fan material has orientation heat transmission function, and thermal conductivity coefficient can be designed as needed；Heat conduction and heat radiation thickness degree can be with minimum
3 nanometers are reached, is the thickness that conventional thermal conductive material can not possibly reach.
Additionally, molding is easily, profile can be with arbitrarily devised, and process is simple.The thermal expansion of graphite fiber composite materials
Coefficient and chip material are close to, and high-low temperature resistant thermal shock ability is strong, reduces the infringement that electronic devices and components internal stress is caused, and improve
The reliability and stability of electronic devices and components, electronic devices and components use times are longer.
Embodiment 2
The present embodiment is that the substrate layer is polyethylene (PE), and the heat dissipating layer is carbon fiber with the difference of embodiment 1
10-30 weight portions, boron nitride 10-20 weight portions, carborundum 30-40 weight portions.
Embodiment 3
The present embodiment is that the substrate layer is polyethylene (PE), and the heat dissipating layer is carbon fiber with the difference of embodiment 1
10-30 weight portions, boron nitride 20-30 weight portions, carborundum 20-30 weight portions.
Embodiment 4
The present embodiment is that the substrate layer is polyethylene (PE), and the heat dissipating layer is carbon fiber with the difference of embodiment 1
10-30 weight portions, boron nitride 5-10 weight portions, carborundum 40-80 weight portions.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, not yet
It is only described specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is for the principle and practical application of preferably explaining the present invention, so that affiliated
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention only receives right
The restriction of claim and its four corner and equivalent.
Claims (6)
1. a kind of radiator fan material, it is characterised in that including heat dissipating layer, protective layer, adhesive layer and substrate layer, the heat dissipating layer
By graphite, nano-graphite, crystalline flake graphite, Graphene, pyrolytic carbon, pyrolytic graphite, graphite composite powder, CNT, carbon fiber, graphite
Fiber, resin, ceramic fibre, quartz fibre, metallic fiber, zirconium oxide, boron nitride, silicon nitride, boron carbide, carborundum, oxidation
Magnesium powder, metasilicic acid fiber, calcium aluminum silicate fibers, alumina fibre, copper, aluminum, silver, tungsten, the one of which of molybdenum powder body or its
Middle multiple material composition；
The protective layer is acrylic resin and/or epoxy resin；
The adhesive layer is the adhesive that rubber and TFE mix；
The substrate layer is polyethylene (PE), polyimides (PI), polyester (PET), polyether-ether-ketone (PEEK), polyphenylene sulfide
(PPS), politef (PTFE), polypropylene (PP), Merlon (PC), polrvinyl chloride (PVC), polystyrene (PS) its
A kind of middle macromolecule membrane or carbon fiber, glass fibre, the non-woven fabrics of the one of which of aramid fiber or woven cloth or gold
Category thin film, the non-woven fabrics of the one of which of metallic fiber or fabric.
2. radiator fan material as claimed in claim 1, it is characterised in that the graphite fibre is asphaltic base, polyacrylonitrile
(PAN) base, viscose glue base, the one of which of phenolic aldehyde base, the graphite fibre is long graphite fibre, through cutter or gas breaking machine
The short graphite fibre of break process, or both mixing；Resin be epoxy resin, phenolic resin, polyester resin, Lauxite,
Organic siliconresin, acryl resin, rubber, TFE, polypropylene (PP), polyethylene (PE), polyester (PET), silicone oil
One of which；Graphite composite powder is expanded graphite, isostatic pressing formed graphite, the one of which of high purity graphite.
3. radiator fan material as claimed in claim 2, it is characterised in that the thickness of the heat dissipating layer is 1 millimeter to 2 millis
Rice.
4. radiator fan material as claimed in claim 3, it is characterised in that the substrate layer is polyethylene (PE), described to dissipate
Thermosphere be carbon fiber 10-30 weight portions, boron nitride 10-20 weight portions, carborundum 30-40 weight portions.
5. radiator fan material as claimed in claim 3, it is characterised in that the substrate layer is polyethylene (PE), described to dissipate
Thermosphere be carbon fiber 10-30 weight portions, boron nitride 20-30 weight portions, carborundum 20-30 weight portions.
6. radiator fan material as claimed in claim 3, it is characterised in that the substrate layer is polyethylene (PE), described to dissipate
Thermosphere be carbon fiber 10-30 weight portions, boron nitride 5-10 weight portions, carborundum 40-80 weight portions.
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| CN201611220611.2A CN106593933A (en) | 2016-12-26 | 2016-12-26 | Heat dissipation fan material |
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| CN201611220611.2A CN106593933A (en) | 2016-12-26 | 2016-12-26 | Heat dissipation fan material |
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| CN107953628A (en) * | 2017-11-16 | 2018-04-24 | 东莞市弗勒特电子科技有限公司 | A kind of three-dimensional high heat conduction gasket and preparation method thereof |
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