CN109912980A - A kind of High thermal-conductive silicone grease and preparation method thereof - Google Patents
A kind of High thermal-conductive silicone grease and preparation method thereof Download PDFInfo
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- CN109912980A CN109912980A CN201910097736.8A CN201910097736A CN109912980A CN 109912980 A CN109912980 A CN 109912980A CN 201910097736 A CN201910097736 A CN 201910097736A CN 109912980 A CN109912980 A CN 109912980A
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Abstract
The invention discloses a kind of High thermal-conductive silicone grease and preparation method thereof, High thermal-conductive silicone grease includes following weight percentage at being grouped as: high temperature resistant dimethicone 5%~12%, heat filling 85%~95%, heat-resisting additive 0.1%~2%, antioxidant 0.1%~1%, graphene 0.005%~0.01%；The cerium oxide of metering, antioxidant, graphene, high temperature resistant dimethicone are added to the container, ultrasonic disperse is uniform, it is then added into planetary mixer and the heat filling of a part is added, it stirs and heats, then remaining heat filling is added, stir and vacuumizes, then cools to room temperature, discharge tinning, obtains High thermal-conductive silicone grease.By the above-mentioned means, the present invention not only has high thermal conductivity coefficient, and there is excellent electrical insulation capability, long-term high temperature resistance；Furthermore it is simple to produce equipment used in the present invention, at low cost, simple production process.
Description
Technical field
The present invention relates to Heat Conduction Material fields, more particularly to a kind of High thermal-conductive silicone grease and preparation method thereof.
Background technique
Heat-conducting silicone grease referred to as " silicone grease " is commonly called as " heat-conducting cream " or " thermal grease ", is to be in high efficiency and heat radiation product paste
The high heat conductive insulating organosilicon material mixed by heat filling and silicone oil by process for treating surface etc., can -50~+
Fat state when using is kept at a temperature of 250 DEG C for a long time.Currently, someone is using the high metal-powder of a small amount of thermal conductivity as increasing
Qiang Ti is filled in the higher heat-conducting silicone grease of insulation performance, and although thermal conductivity obtains certain raising, but the addition of metal powder
The decreasing insulating for making heat-conducting silicone grease cannot use in the product that insulation performance has higher requirements.Common silicone grease uses general
Logical dimethicone, long-time service oil shortage ratio is bigger at high temperature, and as silicone oil is reduced, common silicone grease is likely to powder
Change, adverse effect can be caused to properties of product.In addition the thermal coefficient of common heat-conducting silicone grease only has 0.3~2.5W/ (mK),
It is not able to satisfy requirement of the client to heating conduction.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of High thermal-conductive silicone greases and preparation method thereof, can have excellent
Heating conduction, electrical insulation capability and high temperature resistance.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of High thermal-conductive silicone grease is provided, including
Following weight percentage at being grouped as: high temperature resistant dimethicone 5%~12%, heat filling 85%~95%, heat-resisting additive
0.1%~2%, antioxidant 0.1%~1%, graphene 0.005%~0.01%.
In a preferred embodiment of the present invention, the high temperature resistant dimethicone is viscosity 50cps and viscosity 100cps
One or two kinds of combinations.
In a preferred embodiment of the present invention, the heat filling is one of aluminium oxide and beryllium oxide or a variety of.
In a preferred embodiment of the present invention, the heat-resisting additive is cerium oxide.
In a preferred embodiment of the present invention, the antioxidant is antioxidant 1010.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of High thermal-conductive silicone grease
Preparation method, comprising the following steps: container is added in the cerium oxide of metering, antioxidant, graphene, high temperature resistant dimethicone
In, ultrasonic disperse is uniform, is then added into planetary mixer and the heat filling of a part is added, stir and heat, then
Remaining heat filling is added, stir and vacuumizes, then cools to room temperature, discharge tinning, obtains High thermal-conductive silicone grease.
The beneficial effects of the present invention are: the present invention not only has a high thermal conductivity coefficient, and have excellent electrical insulation capability,
Long-term high temperature resistance fully meets client to requirement thermally conductive, heat-resisting, in terms of electrical insulation capability；Furthermore institute of the present invention is produced
The equipment used is simple, at low cost, and simple production process, raw material cost is low, there is good economic benefit and industrialized production
Prospect.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The embodiment of the present invention includes:
A kind of High thermal-conductive silicone grease, including following weight percentage at being grouped as: it is high temperature resistant dimethicone 5%~12%, thermally conductive
Filler 85%~95%, heat-resisting additive 0.1%~2%, antioxidant 0.1%~1%, graphene 0.005%~0.01%.
High temperature resistant dimethicone is that the high temperature resistant dimethicone is one of viscosity 50cps and 100cps or two
Kind, manufacturer is Shanghai Aladdin biochemical technology limited liability company.
Heat filling is one of alumina G D-S404Z, alumina G D-S304A, beryllium oxide or a variety of；Wherein aoxidize
Aluminium GD-S404Z, alumina G D-S304A manufacturer are that Foshan City ties up Coudé material Science and Technology Ltd., beryllium oxide factory
Family is Shanghai Tai Yang Science and Technology Ltd..
The heat-resisting additive is cerium oxide, and manufacturer is Shanghai Aladdin biochemical technology limited liability company.
The antioxidant is antioxidant 1010, and antioxidant 1010 is produced by BASF.
The graphene is one of LN-4N, LN-2P or a variety of, and manufacturer is Shanghai Li Wusheng enterprise collection
Co., Ltd, group.
The present invention also provides a kind of preparation methods of High thermal-conductive silicone grease, comprising:
Embodiment 1:
11g cerium oxide, 32g antioxidant 1010,0.3g graphene LN-2P, 250g50CPS high temperature resistant dimethicone are added and held
In device, ultrasonic disperse uniformly (0.5h~1h), is then added into planetary mixer and 62.5g beryllium oxide and 2000g oxygen is added
Change aluminium GD-S404Z, is stirred and heated to 120 DEG C, remaining 62.5g beryllium oxide and 2000g alumina G D-S404Z is then added
Heat filling stirs and vacuumizes 3~4h, then cools to room temperature, and the tinning that discharges is to get High thermal-conductive silicone grease.
High thermal-conductive silicone grease obtained it is every shown in the experimental data are shown in the following table:
| Technical parameter | Embodiment 1 |
| Thermal coefficient (W/ mK) | 5.13 |
| Temperature resistant range (DEG C) | - 50~300 |
| Oil is from degree (%, 250 DEG C/for 24 hours) | 0.082 |
| Volatility (%, 250 DEG C/for 24 hours) | 0.068 |
Embodiment 2
32g cerium oxide, 25g antioxidant 1010,0.5g graphene LN-4N, 280g100CPS high temperature resistant dimethicone are added
In container, ultrasonic disperse uniformly (0.5h~1h), is then added into planetary mixer and 2062.5g alumina G D- is added
S404Z, is stirred and heated to 120 DEG C, and remaining 2062.5g alumina G D-S404Z is then added, stir and vacuumize 3~
4h is then cooled to room temperature, and the tinning that discharges is to get High thermal-conductive silicone grease.
High thermal-conductive silicone grease obtained it is every shown in the experimental data are shown in the following table:
| Technical parameter | Embodiment 2 |
| Thermal coefficient (W/ mK) | 5.04 |
| Temperature resistant range (DEG C) | - 50~300 |
| Oil is from degree (%, 250 DEG C/for 24 hours) | 0.014 |
| Volatility (%, 250 DEG C/for 24 hours) | 0.047 |
Embodiment 3
By 42g cerium oxide, 32g antioxidant 1010,0.2g graphene LN-2P, 0.5g graphene LN-4N, 100g50CPS high temperature resistant
Dimethicone, 150g100CPS high temperature resistant dimethicone are added to the container, and ultrasonic disperse uniformly (0.5h~1h), then will
It is added planetary mixer and 1250g alumina G D-S404Z, 850g alumina G D-S307A is added, and is stirred and heated to 120
DEG C, remaining 1250g alumina G D-S404Z, 850g alumina G D-S307A is then added, stirs and vacuumize 3~4h, so
After be cooled to room temperature, discharge tinning to get High thermal-conductive silicone grease.
High thermal-conductive silicone grease obtained it is every shown in the experimental data are shown in the following table:
| Technical parameter | Embodiment 3 |
| Thermal coefficient (W/ mK) | 5.02 |
| Temperature resistant range (DEG C) | - 50~300 |
| Oil is from degree (%, 250 DEG C/for 24 hours) | 0.045 |
| Volatility (%, 250 DEG C/for 24 hours) | 0.056 |
Embodiment 4
By 60g cerium oxide, 15g antioxidant 1010, the resistance to height of 0.45g graphene LN-2P, 0.45g graphene LN-4N, 150g50CPS
Warm dimethicone, 150g100CPS high temperature resistant dimethicone are added to the container, and ultrasonic disperse is uniform (0.5h~1h), then
It is added into planetary mixer and 1750g alumina G D-S404Z, 250g alumina G D-S307A, 100g beryllium oxide is added, stir
It mixes and is heated to 120 DEG C, remaining 1750g alumina G D-S404Z, 250g alumina G D-S307A, 100g oxidation is then added
Beryllium stirs and vacuumizes 3~4h, then cools to room temperature, and the tinning that discharges is to get High thermal-conductive silicone grease.
High thermal-conductive silicone grease obtained it is every shown in the experimental data are shown in the following table:
| Technical parameter | Embodiment 4 |
| Thermal coefficient (W/ mK) | 5.11 |
| Temperature resistant range (DEG C) | - 50~300 |
| Oil is from degree (%, 250 DEG C/for 24 hours) | 0.0436 |
| Volatility (%, 250 DEG C/for 24 hours) | 0.061 |
In embodiment 1-4, by cerium oxide, antioxidant, graphene and high temperature resistant dimethicone ultrasonic disperse 0.5h ~ 1h, energy
It preferably disperses ingredients of cerium oxide, antioxidant, graphene these few components among system, plays respective effect；Oxygen
The high filling for changing aluminium GD-S404Z, alumina G D-S304A, beryllium oxide heat filling makes heat-conducting silicone grease have higher thermally conductive system
Number, can reach 5W/ (mK).
High thermal-conductive silicone grease of the invention compared with common heat-conducting silicone grease, have more good thermal conductivity, while heatproof, absolutely
Edge performance, stability etc. are superior to common heat-conducting silicone grease, and water resistant does not solidify, corrosion-free to the metal material of contact
(copper, aluminium, steel)；Extremely low volatilization loss, not dry, non-fusible, good adaptability for materials and wide use temperature range (- 50
~+300 DEG C)；Nontoxic, tasteless, non-corrosive, Chemical Physics performance is stablized.It is applied to power device and radiator assembly
Face is more advantageous to the air gap for helping to eliminate contact surface and increases type of thermal communication, reduces thermal resistance, reduce the work temperature of power device
Degree improves reliability and prolongs the service life.
Equipment used in production High thermal-conductive silicone grease is simple, and at low cost, simple production process, raw material cost is low, can
Meet the production requirement of client, there is good economic benefit and industrial production prospect.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (6)
1. a kind of High thermal-conductive silicone grease, which is characterized in that including following weight percentage at being grouped as: high temperature resistant dimethicone
5%~12%, heat filling 85%~95%, heat-resisting additive 0.1%~2%, antioxidant 0.1%~1%, graphene 0.005%~
0.01%。
2. High thermal-conductive silicone grease according to claim 1, which is characterized in that the high temperature resistant dimethicone is viscosity
One or two kinds of combinations of 50cps and viscosity 100cps.
3. High thermal-conductive silicone grease according to claim 1, which is characterized in that the heat filling is in aluminium oxide and beryllium oxide
It is one or more.
4. High thermal-conductive silicone grease according to claim 1, which is characterized in that the heat-resisting additive is cerium oxide.
5. High thermal-conductive silicone grease according to claim 1, which is characterized in that the antioxidant is antioxidant 1010.
6. the preparation method of -5 any High thermal-conductive silicone greases according to claim 1, which comprises the following steps:
The cerium oxide of metering, antioxidant, graphene, high temperature resistant dimethicone are added to the container, ultrasonic disperse is uniform, then by it
Planetary mixer is added and the heat filling of a part is added, stirs and heats, remaining heat filling is then added, stirring is simultaneously
It vacuumizes, then cools to room temperature, discharge tinning, obtains High thermal-conductive silicone grease.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114507446A (en) * | 2022-02-23 | 2022-05-17 | 南京欧瑞光电科技有限公司 | High-efficiency heat-conducting silicone grease and preparation method thereof |
| CN115558293A (en) * | 2022-10-12 | 2023-01-03 | 杭州之江有机硅化工有限公司 | Heat-conducting silicone grease composition and application thereof |
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| CN1733840A (en) * | 2004-05-21 | 2006-02-15 | 信越化学工业株式会社 | Silicone grease compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114507446A (en) * | 2022-02-23 | 2022-05-17 | 南京欧瑞光电科技有限公司 | High-efficiency heat-conducting silicone grease and preparation method thereof |
| CN115558293A (en) * | 2022-10-12 | 2023-01-03 | 杭州之江有机硅化工有限公司 | Heat-conducting silicone grease composition and application thereof |
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