CN110349926A - A method of reducing liquid metal for conducting heat piece thermal resistance - Google Patents
A method of reducing liquid metal for conducting heat piece thermal resistance Download PDFInfo
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- CN110349926A CN110349926A CN201910651204.4A CN201910651204A CN110349926A CN 110349926 A CN110349926 A CN 110349926A CN 201910651204 A CN201910651204 A CN 201910651204A CN 110349926 A CN110349926 A CN 110349926A
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- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000956 alloy Substances 0.000 claims abstract description 88
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 87
- 239000004744 fabric Substances 0.000 claims abstract description 50
- 239000011152 fibreglass Substances 0.000 claims abstract description 48
- 229910052738 indium Inorganic materials 0.000 claims description 51
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 51
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 50
- 229910052718 tin Inorganic materials 0.000 claims description 50
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 49
- 229910052733 gallium Inorganic materials 0.000 claims description 49
- 238000002156 mixing Methods 0.000 claims description 32
- 238000007781 pre-processing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 241000209094 Oryza Species 0.000 claims 3
- 235000007164 Oryza sativa Nutrition 0.000 claims 3
- 235000009566 rice Nutrition 0.000 claims 3
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 238000009736 wetting Methods 0.000 abstract 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 20
- 239000002994 raw material Substances 0.000 description 11
- 235000019441 ethanol Nutrition 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000010792 warming Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- IGUXCTSQIGAGSV-UHFFFAOYSA-K indium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[In+3] IGUXCTSQIGAGSV-UHFFFAOYSA-K 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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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
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
- C09K5/12—Molten materials, i.e. materials solid at room temperature, e.g. metals or salts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3733—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon having a heterogeneous or anisotropic structure, e.g. powder or fibres in a matrix, wire mesh, porous structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3736—Metallic materials
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
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Abstract
The present invention relates to Heat Conduction Material fields, and in particular to a method of reduce liquid metal for conducting heat piece thermal resistance.The invention discloses a kind of methods for reducing liquid metal for conducting heat piece thermal resistance, include the steps that for pretreated liquid metal alloy being applied on fiberglass gridding cloth.The present invention makes liquid metal alloy thermally conductive sheet complete wetting fill thermal conductive surface gap, achievees the effect that low thermal resistance, high thermal conductivity by improving to liquid metal alloy.
Description
Technical field
The present invention relates to Heat Conduction Material fields, and in particular to a method of reduce liquid metal for conducting heat piece thermal resistance.
Background technique
Currently, microelectric technique rapidly develops so that electronic chip overall power density substantially increases, heat flow density is also therewith
Increase.Heat dissipation quality can seriously affect system stability and hardware longevity.Chip technology proposes high-performance heat dissipating method
Unprecedented urgent need, so that superelevation heat flow density chip cooling is always the research field of Showed Very Brisk in the world.
The heat dissipation of chip requires to be contacted using heat-conducting interface material with radiator or radiating surface, this boundary material
Effect be fill two interfaces between microvoid.Traditional heat-conducting interface material is heat-conducting silicone grease or heat conductive silica gel, substantially
Principle is the filler particles that high thermal conductivity is filled in silicone oil.But because silicone oil or silica gel substrate thermal conductivity are extremely low, overall
Thermal conductivity is very low, generally below 5W/mK, and thermal resistance is greater than 0.3cm2K/W.This is very for the heat dissipation of electronic chip of high speed development
Unfavorable, for example, the heat flow density of 5G communication chip is greater than 20W/mK, heat-conducting silicone grease or silica gel material will generate height in interface
Up to 6 degree of temperature rise.To solve this problem, liquid metal alloy Heat Conduction Material progresses into the visual field of people in recent years.Such as
GaInBi series liquid metal alloy material, fusing point are 58-60 degree, when chip temperature is more than the fusing point, liquid metal alloy
Piece melts and plays the role of filling interface gap.Because of the distinctive high thermal conductivity of metal, thermal conductivity up to 20W/ (mK).
Although the liquid metal for conducting heat piece capacity of heat transmission with higher, there are still much ask during practical application
Topic.Although a deficiency due to the pressure at hot interface after assembly and uneven, can be led with filling interface gap after its fusing
Cause some places covering/infiltration relatively good, and some places are poor, this is especially prominent on biggish radiating surface.Its result
The effect that will lead to different thermally conductive sheets is different, fluctuated, seriously affects it with effect.
Summary of the invention
In order to solve the above-mentioned technical problem, the first aspect of the invention provides a kind of reduction liquid metal for conducting heat piece heat
The method of resistance includes the steps that for pretreated liquid metal alloy being applied on fiberglass gridding cloth.
As a kind of perferred technical scheme, the liquid metal alloy is made of gallium, indium, tin.
As a kind of perferred technical scheme, the mass percent of the gallium, indium, tin are as follows:
Indium 19~23%；
Gallium 58~63%；
Tin remainder amount.
As a kind of perferred technical scheme, the mass percent of the gallium, indium, tin are as follows:
Indium 20~22%；
Gallium 59~61%；
Tin remainder amount.
As a kind of perferred technical scheme, the fiberglass gridding cloth with a thickness of 0.01-0.2 millimeters.
As a kind of perferred technical scheme, the grammes per square metre of the fiberglass gridding cloth is 40-200g/ square metres.
As a kind of perferred technical scheme, the grammes per square metre of the fiberglass gridding cloth is 110-200g/ square metres.
As a kind of perferred technical scheme, the preprocessing process of the liquid metal alloy are as follows: by liquid metal alloy
Certain time is stirred at room temperature.
As a kind of perferred technical scheme, the mixing speed is 10-100rpm, and mixing time is 0.5-2 hours.
As a kind of perferred technical scheme, the mixing speed is 10-100rpm, and mixing time is 1 hour.
The utility model has the advantages that the present invention soaks liquid metal alloy thermally conductive sheet completely by improving to liquid metal alloy
Profit filling thermal conductive surface gap, achievees the effect that low thermal resistance, high thermal conductivity.
Detailed description of the invention
The thermal resistance of the embodiment of the present invention 1 is with pressure variation when Fig. 1 is test.
Specific embodiment
To solve the above-mentioned problems, the present invention provides a kind of method for reducing liquid metal alloy thermally conductive sheet thermal resistance, packets
Include the step pretreated liquid metal alloy being applied on fiberglass gridding cloth.
Liquid metal alloy
As a preferred embodiment, the liquid metal alloy is made of gallium, indium, tin.
The gallium is pale blue non-ferrous metal, and fusing point is 29.76 degrees Celsius, becomes liquid when being heated to fusing point, is cooled to 0 DEG C
Without solidifying, when being changed into solid by liquid, volume about increases 3.2%.The thermal conductivity of the gallium is 29.4W/ (m DEG C),
Gallium it is more stable in dry air and generate sull prevention continue to aoxidize, tarnish in humid air.
The indium is silvery white and slightly nattier blue metal, and fusing point is 156.61 degrees Celsius.The thermal conductivity of the indium is
81.6W/(m·℃)；Between room temperature to fusing point, slowly, surface forms very thin oxidation film to the oxygen effect in indium and air, temperature
When spending higher, with active nonmetallic effect.Bulk metal indium is not reacted with boiling water and aqueous slkali, but powdered indium can be slow with water
Slow effect generates indium hydroxide.
The tin is a kind of metallic element of low melting point for having silvery white gloss, and fusing point is 231.89 degrees Celsius.It is described
The thermal conductivity of tin is 15.08W/ (m DEG C)；In air the Surface Creation stannic oxide protective film of tin and stablize, heat lower oxygen
Change reaction to accelerate.Tin is at normal temperature rich in malleability, and especially at 100 DEG C, its malleability is very good, can transform into very thin tin
Foil.
As a preferred embodiment, the mass percent of the gallium, indium, tin are as follows:
Indium 19~23%；
Gallium 58~63%；
Tin remainder amount.
As a preferred embodiment, the mass percent of the gallium, indium, tin are as follows:
Indium 20~22%；
Gallium 59~61%；
Tin remainder amount.
Preferably, the mass percent of the gallium, indium, tin are as follows:
Indium 21.5%；
Gallium 62.5%；
Tin remainder amount.
Preferably, the mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；It is warming up to 250-300 DEG C, 2-8 hours is kept the temperature, then cools to room temperature,
Obtained liquid metal alloy is placed in the containers for future use of inert atmosphere protection.
As a preferred embodiment, the preprocessing process of the liquid metal alloy are as follows: by liquid metal alloy
Certain time is stirred at room temperature.
As a preferred embodiment, the mixing speed is 10-100rpm, mixing time is 0.5-2 hours.
The mixing time for example can be with are as follows: 0.5 hour, 0.6 hour, 0.7 hour, 0.8 hour, 0.9 hour, 1 hour,
1.2 hours, 1.3 hours, 1.4 hours, 1.5 hours, 1.6 hours, 1.7 hours, 1.8 hours, 1.9 hours, 2 hours.
As a preferred embodiment, the mixing speed is 10-100rpm, mixing time is 1 hour.
Applicants have discovered that enhancing its infiltration between grid cloth by pre-processing to liquid metal alloy
Property.
Fiberglass gridding cloth
The fiberglass gridding cloth is using fiberglass woven fabric as substrate, through the anti-lotion immersion coating of macromolecule
?.Fiberglass gridding cloth is based on alkali-resisting glass fiber screen cloth, and alkali-free glass fiber yarn is through special institutional framework-leno group in its use
It knits strand to knit, by alkali resistant liquid, the contour warm setting treatment of reinforcing agent.
As a preferred embodiment, the fiberglass gridding cloth with a thickness of 0.01-0.2 millimeters.
As a preferred embodiment, the grammes per square metre of the fiberglass gridding cloth is 40-200g/ square metres.
Preferred embodiment, the grammes per square metre of the fiberglass gridding cloth are 110-200g/ square metres.
As a preferred embodiment, the method for reducing liquid metal alloy thermally conductive sheet thermal resistance, including it is following
Step:
(1) liquid metal alloy is stirred at room temperature 0.5~2 hour, mixing speed 10-100rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
Wherein, fiberglass gridding cloth surface is repeatedly rubbed using cotton swab when smearing in step (3), makes liquid metal alloy
It is sufficiently contacted with grid cloth closely.
The applicant has been surprisingly found that, is 110-200g/ by being applied to grammes per square metre after being pre-processed liquid metal alloy
Square metre, with a thickness of on 0.01-0.2 millimeters of fiberglass gridding cloths, can be good at reducing liquid metal alloy thermally conductive sheet
Thermal resistance, conjecture is because when liquid metal alloy thermally conductive sheet and when thermally conductive face contact, with submillimeter level periodic undulations
Liquid metal alloy thermally conductive sheet can spread apart to come in thermal conductive surface, these relief fabrics are tiny and sufficiently flexible and also specific dimensions and
The periodic structure of spacing is mutually cooperateed with pretreated liquid metal, and rapid deformation under pressure simultaneously carries out thermal conductive surface
Preliminary filling, causing each of thermal conductive surface place is " compression ".Meanwhile the air on thermal conductive surface in little groove is pressed
Contracting, at this time in ambient pressure, capillary force and little groove under the collective effect of air pressure, thermal conductive surface and liquid metals thermally conductive sheet
Reach a kind of optimum state.Then when temperature increased fusing point, liquid metal alloy fusing, all thermal conductive surface gaps will be complete
Full infiltration filling, achievees the effect that low thermal resistance, high thermal conductivity.
The present invention is specifically described below by embodiment.It is necessarily pointed out that following embodiment is only used
In the invention will be further described, it should not be understood as limiting the scope of the invention, professional and technical personnel in the field
The some nonessential modifications and adaptations made according to the content of aforementioned present invention, still fall within protection scope of the present invention.
In addition, if without other explanations, it is raw materials used to be all commercially available.
Embodiment
Embodiment 1
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 1 hour, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 160g/ square metres, with a thickness of 0.16 millimeter, model EW160, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 2
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 2 hours, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 160g/ square metres, with a thickness of 0.16 millimeter, model EW160, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 3
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 0.5 hour, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 160g/ square metres, with a thickness of 0.16 millimeter, model EW160, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 4
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 4 hours, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 160g/ square metres, with a thickness of 0.16 millimeter, model EW160, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 5
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol；
(2) by liquid metal alloy be applied on the fiberglass gridding cloth that step (1) was cleaned to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 160g/ square metres, with a thickness of 0.16 millimeter, model EW160, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 6
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 1 hour, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 200g/ square metres, with a thickness of 0.2 millimeter, model EW200, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 7
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 1 hour, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 110g/ square metres, with a thickness of 0.1 millimeter, model EW110, purchase
In Changzhou new peak insulating materials Co., Ltd.
Embodiment 8
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 1 hour, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21%；
Gallium 60%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 24g/ square metres, with a thickness of 0.035 millimeter, model 792, purchase in
Changzhou new peak insulating materials Co., Ltd.
Embodiment 9
A method of reducing liquid metal for conducting heat piece thermal resistance, comprising the following steps:
(1) liquid metal alloy is stirred at room temperature 1 hour, mixing speed 80rpm.；
(2) successively fiberglass gridding cloth is cleaned with acetone, ethyl alcohol simultaneously；
(3) step (1) pretreated liquid metal alloy is applied to the fiberglass gridding cloth that step (2) was cleaned
On to get.
The liquid metal alloy is made of gallium, indium, tin.
The mass percent of the gallium, indium, tin are as follows:
Indium 21.5%；
Gallium 62.5%；
Tin remainder amount.
The preparation method of the liquid metal alloy, comprising the following steps: weigh liquid metal alloy according to component formula
Raw material simple substance, be added after mixing into crucible；280 DEG C are warming up to, 5 hours is kept the temperature, then cools to room temperature, will obtain
Liquid metal alloy be placed in the containers for future use of inert atmosphere protection.
The grammes per square metre of the fiberglass gridding cloth is 160g/ square metres, with a thickness of 0.16 millimeter, model EW160, purchase
In Changzhou new peak insulating materials Co., Ltd.
Performance test
Thermo-resistance measurement: thermo-resistance measurement (measurement is carried out to liquid metal for conducting heat piece using Hunan instrument DRL heat conductive silica gel/thermal resistance instrument
Pressure is 100Psi), it the results are shown in Table 1, thermal resistance unit cm2K/W。
1. thermo-resistance measurement result of table
| Embodiment | Thermal resistance |
| Embodiment 1 | 0.04 |
| Embodiment 2 | 0.08 |
| Embodiment 3 | 0.06 |
| Embodiment 4 | 0.45 |
| Embodiment 5 | 0.37 |
| Embodiment 6 | 0.07 |
| Embodiment 7 | 0.05 |
| Embodiment 8 | 0.41 |
| Embodiment 9 | 0.07 |
The above is only presently preferred embodiments of the present invention, is not the limitation for making other forms to invention, any
Those skilled in the art are changed or are changed to the equivalent of equivalent variations possibly also with the technology contents of the disclosure above
Embodiment, but without departing from the technical solutions of the present invention, above embodiments are made according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of method for reducing liquid metal for conducting heat piece thermal resistance, which is characterized in that including by pretreated liquid metal alloy
The step being applied on fiberglass gridding cloth.
2. the method as described in claim 1, which is characterized in that the liquid metal alloy is made of gallium, indium, tin.
3. method according to claim 2, which is characterized in that the mass percent of the gallium, indium, tin are as follows:
Indium 19~23%；
Gallium 58~63%；
Tin remainder amount.
4. method as claimed in claim 2 or claim 3, which is characterized in that the mass percent of the gallium, indium, tin are as follows:
Indium 20~22%；
Gallium 59~61%；
Tin remainder amount.
5. the method as described in claim 1, which is characterized in that the fiberglass gridding cloth with a thickness of 0.01-0.2 milli
Rice.
6. the method as described in claim 1, which is characterized in that the grammes per square metre of the fiberglass gridding cloth is 40-200g/ squares
Rice.
7. method as claimed in claim 6, which is characterized in that the grammes per square metre of the fiberglass gridding cloth is flat for 110-200g/
Square rice.
8. method as described in any one of claims 1 to 7, which is characterized in that the preprocessing process of the liquid metal alloy
Are as follows: certain time is stirred at room temperature in liquid metal alloy.
9. method according to claim 8, which is characterized in that the mixing speed is 10-100rpm, mixing time 0.5-
2 hours.
10. method as claimed in claim 9, which is characterized in that the mixing speed is 10-100rpm, and mixing time is 1 small
When.
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