CN104877346A - Preparation process of adjustable heat conductivity binary mixed silicone grease for high-power LED streetlamp - Google Patents
Preparation process of adjustable heat conductivity binary mixed silicone grease for high-power LED streetlamp Download PDFInfo
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- CN104877346A CN104877346A CN201510208333.8A CN201510208333A CN104877346A CN 104877346 A CN104877346 A CN 104877346A CN 201510208333 A CN201510208333 A CN 201510208333A CN 104877346 A CN104877346 A CN 104877346A
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Abstract
The invention relates to a preparation process of adjustable heat conductivity binary mixed silicone grease for a high-power LED streetlamp. The method for dissipating the heat of the LED streetlamp by utilizing unique high heat conductivity silicone grease is characterized in that a plurality of gaps existing among particles when only one filling material is provided are filled with mixed particles in different particle sizes by means of a binary nano mixing method, the heat conductivity silicone grease with high heat conductivity and adjustable heat conductivity is prepared by virtue of different filling ratios of different filling materials. The method is applied to the heat radiation of the LED streetlamp and plays a role in solving the problem that the existing LED streetlamp is difficult in heat dissipation.
Description
Technical field:
The present invention relates to a kind of heat radiation technique of high-power LED street lamp, the preparation technology of the adjustable two end number mixing silicone grease of especially a kind of high-power LED street lamp thermal conductivity.
Background technology:
Along with LED manufactures and the continuous progress of packaging process, the power of LED is increasing, and current commercial great power LED power input is generally at more than 1W, and chip area 1mm × 1mm, heat flow density is at 100W/cm
2above, cooling requirements is very high.Heat passes to outside atmosphere from chip, through some interfaces, and the gap between interface, the warpage of substrate all can affect the heat radiation of bonding and local, form interface resistance.Along with LED is to high-power, high brightness development, interface resistance has become one of LED industry difficult problem, must solve from the many-side such as heat interfacial material, radiator structure, and heat interfacial material is one of effective means reducing high-power LED lamp median surface thermal resistance.
Conventional boundary material has heat-conducting glue, heat-conducting silicone grease and heat conduction film.Heat-conducting pad uses simple and easy, but because its thickness is comparatively large, thermal resistance is bigger than normal, can not be applied to the occasion that cooling requirements is very high.Heat-conducting silicone grease, be called for short silicone grease, being the high efficiency and heat radiation product in paste, is the high heat conductive insulating organosilicon material mixed by process for treating surface etc. by heat conductive filler and substrate silicone oil, can keep fat state when using at the temperature of-50 ~+230 DEG C for a long time.Heat-conducting silicone grease is filled between accessory and scatterer, and drain middle air, surface in contact of fully moistening, forms a low-down thermal resistance interface, is beneficial to and helps the heating such as CPU, great power LED rich and influential family rapidly " bringing down a fever ".Heat conductive silica gel and heat-conducting silicone grease are the filled media of intermediate heat, and outward appearance is also similar, and difference is: heat conductive silica gel is a kind of joint sealant, and main component is silicon-dioxide, has extraordinary viscosity, can solidify under normal temperature; And heat-conducting silicone grease cannot solidify, there is no viscosity.So heat conductive silica gel is mainly used in the scatterer not having fastener or stationary installation, and silicone grease is mainly used in the fixing heat dissipation equipment of fastener.
Summary of the invention:
The object of the present invention a kind ofly prepares the adjustable heat-conducting silicone grease of thermal conductivity from aspects such as filler process, filling proportion, filling kind and two end number mixing to propose, and prepared heat-conducting silicone grease is used for the heat radiation of high-power LED street lamp.
In order to realize the object of the present invention, intend adopting following technology:
A preparation technology for the adjustable two end number mixing silicone grease of high-power LED street lamp thermal conductivity, its overall preparation technology comprises the following steps:
(1) precise and penetrating 710 DEG C of heating wine, is dissolved in alcohol by the stearic acid relative to filler particles quality 1.5%;
(2) stearic acid solution put into by the filler taking preset quality, uniform stirring 10min at 70 DEG C;
(3) 2h is dried in the baking oven that the mixed solution taking out step (2) puts into 80 DEG C;
(4) according to the proportions silicone grease of dimethyl silicone oil and filler particles volume, and put into colloid agitator and stir 1h;
(5) bake 4h under silicone grease being placed on 150 DEG C of temperature, after taking-up, stir 1h again;
(6) by the silicone grease uniform application for preparing according to above-mentioned steps on the aluminium base of LED street lamp, fully contact with the radiator of LED street lamp.
Described filler material selects Al system and AlN system silicon grease material;
The main Fillers selection particle diameter of described filler material is respectively Al particle and the AlN particle of 8.9 μm and 10 μm;
It is AlN, Cu and Ag particle that particle diameter is respectively 27 μm, 20 μm, 1 μm that two constituent elements of described filler material strengthen condiment;
Ratio between described strongthener and main filler is between 0.1 to 0.3;
Described filler and the volume of silicone oil are between 0.1 to 0.9;
Described adjustable two end number mixing heat-conducting silicone grease specific conductivity variable range is 1 to 7Wm
-1k
-1.
The present invention's feature compared with the prior art:
The method that the present invention utilizes special High thermal-conductive silicone grease to dispel the heat to LED street lamp, by bielement nano hybrid system, namely the different stuff and other stuff of size is adopted to fill the many spaces existed between the particle of particle when only having a kind of packing material and particle, different ratios is filled to prepare more high thermal conductivity and the adjustable heat-conducting silicone grease of thermal conductivity by different packing material, and be applied in LED street lamp heat radiation, will active effect be played to the problem solving the heat radiation of existing LED lamp difficult.
Accompanying drawing illustrates:
Fig. 1 illustrates preparation technology's schema of the present invention;
Fig. 2 illustrates the radiating effect of different heat-conducting silicone grease types in LED street lamp.
Embodiment:
A preparation technology for the adjustable two end number mixing silicone grease of high-power LED street lamp thermal conductivity, its concrete preparation technology comprises: precise and penetrating 710 DEG C of (1) heating wine, is dissolved in alcohol by the stearic acid relative to filler particles quality 1.5%; (2) stearic acid solution put into by the filler taking preset quality, uniform stirring 10min at 70 DEG C; (3) 2h is dried in the baking oven that the mixed solution taking out step (2) puts into 80 DEG C; (4) according to the proportions silicone grease of dimethyl silicone oil and filler particles volume, and put into colloid agitator and stir 1h; (5) bake 4h under silicone grease being placed on 150 DEG C of temperature, after taking-up, stir 1h again; (6) by the silicone grease uniform application for preparing according to above-mentioned steps on the aluminium base of LED street lamp, fully contact with the radiator of LED street lamp.Described filler material selects Al system and AlN system silicon grease material; The main Fillers selection particle diameter of described filler material is respectively Al particle and the AlN particle of 8.9 μm and 10 μm; It is AlN, Cu and Ag particle that particle diameter is respectively 27 μm, 20 μm, 1 μm that two constituent elements of described filler material strengthen condiment; Ratio between described strongthener and main filler is between 0.1 to 0.3; Described filler and the volume of silicone oil are between 0.1 to 0.9; Described adjustable two end number mixing heat-conducting silicone grease specific conductivity variable range is 1 to 7Wm
-1k
-1.
As shown in Figure 2, oil based on dimethyl silicone oil, make two end number mixing heat-conducting silicone grease by the two kinds of packing materials adding different-grain diameter size and content, controlled the thermal conductivity of different two end number mixing silicone grease by the packing ratio changing packing material, to adapt to the LED street lamp of different cooling requirements.Test result shows, the heat-conducting silicone grease of preparation is used for the heat radiation of conventional high-power LED street lamp, its actual radiating effect is better than heat interfacial material purchased on the market, and best with Ag/AlN two end number mixing heat-conducting silicone grease heat dispersion.
Claims (7)
1. a preparation technology for the adjustable two end number mixing silicone grease of high-power LED street lamp thermal conductivity, its overall preparation technology comprises the following steps:
(1) precise and penetrating 710 DEG C of heating wine, is dissolved in alcohol by the stearic acid relative to filler particles quality 1.5%;
(2) stearic acid solution put into by the filler taking preset quality, uniform stirring 10min at 70 DEG C;
(3) 2h is dried in the baking oven that the mixed solution taking out step (2) puts into 80 DEG C;
(4) according to the proportions silicone grease of dimethyl silicone oil and filler particles volume, and put into colloid agitator and stir 1h;
(5) bake 4h under silicone grease being placed on 150 DEG C of temperature, after taking-up, stir 1h again;
(6) by the silicone grease uniform application for preparing according to above-mentioned steps on the aluminium base of LED street lamp, fully contact with the radiator of LED street lamp.
2. the preparation technology of the adjustable two end number mixing silicone grease of a kind of high-power LED street lamp thermal conductivity according to claim 1, is characterized in that: described filler material selects Al system and AlN system silicon grease material.
3. the preparation technology of the adjustable two end number mixing silicone grease of a kind of high-power LED street lamp thermal conductivity according to claim 1, is characterized in that: the main Fillers selection particle diameter of described filler material is respectively Al particle and the AlN particle of 8.9 μm and 10 μm.
4. the preparation technology of the adjustable two end number mixing silicone grease of a kind of high-power LED street lamp thermal conductivity according to claim 1, is characterized in that: it is AlN, Cu and Ag particle that particle diameter is respectively 27 μm, 20 μm, 1 μm that two constituent elements of described filler material strengthen condiment.
5. the preparation technology of the adjustable two end number mixing silicone grease of a kind of high-power LED street lamp thermal conductivity according to claim 1, is characterized in that: the ratio between described strongthener and main filler is between 0.1 to 0.3.
6. the preparation technology of the adjustable two end number mixing silicone grease of a kind of high-power LED street lamp thermal conductivity according to claim 1, is characterized in that: described filler and the volume of silicone oil are between 0.1 to 0.9.
7. the preparation technology of the adjustable two end number mixing silicone grease of a kind of high-power LED street lamp thermal conductivity according to claim 1, is characterized in that: described adjustable two end number mixing heat-conducting silicone grease specific conductivity variable range is 1 to 7Wm
-1k
-1.
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| CN201510208333.8A CN104877346A (en) | 2015-04-24 | 2015-04-24 | Preparation process of adjustable heat conductivity binary mixed silicone grease for high-power LED streetlamp |
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| CN201510208333.8A CN104877346A (en) | 2015-04-24 | 2015-04-24 | Preparation process of adjustable heat conductivity binary mixed silicone grease for high-power LED streetlamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384245A (en) * | 2018-04-04 | 2018-08-10 | 宁波伟铄电子科技有限公司 | A kind of polynary silicone grease heat conducting nanometer material of electronic component |
| CN113539652A (en) * | 2021-07-06 | 2021-10-22 | 合泰盟方电子（深圳）股份有限公司 | Thin film inductor processing technology and thin film inductor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181271A (en) * | 2011-01-24 | 2011-09-14 | 重庆大学 | Binary mixed nano heat-conducting silicone grease for heat dissipation of high-power LED (light-emitting diode) lamp and preparation method thereof |
| CN103333655A (en) * | 2013-06-13 | 2013-10-02 | 浙江汇杰有机硅有限公司 | Method for preparing large power LED (light-emitting diode) high thermal conductivity silicone grease |
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2015
- 2015-04-24 CN CN201510208333.8A patent/CN104877346A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181271A (en) * | 2011-01-24 | 2011-09-14 | 重庆大学 | Binary mixed nano heat-conducting silicone grease for heat dissipation of high-power LED (light-emitting diode) lamp and preparation method thereof |
| CN103333655A (en) * | 2013-06-13 | 2013-10-02 | 浙江汇杰有机硅有限公司 | Method for preparing large power LED (light-emitting diode) high thermal conductivity silicone grease |
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| 石逸武、罗永祥等: "《硅油及填料对导热硅脂接触热阻的影响》", 《电子与封装》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384245A (en) * | 2018-04-04 | 2018-08-10 | 宁波伟铄电子科技有限公司 | A kind of polynary silicone grease heat conducting nanometer material of electronic component |
| CN108384245B (en) * | 2018-04-04 | 2021-06-15 | 江门嘉钡电子科技有限公司 | Multi-element silicone grease heat-conducting composite material for electronic element |
| CN113539652A (en) * | 2021-07-06 | 2021-10-22 | 合泰盟方电子（深圳）股份有限公司 | Thin film inductor processing technology and thin film inductor |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 315408 Yuyao Economic Development Zone (Ningbo), Zhejiang, China Applicant after: Ningbo Liaoyuan Lamps Co.,Ltd. Address before: 315408 Zhejiang city of Yuyao Province River Economic Development Zone Industrial Park East Street Shaw Applicant before: Ningbo Liaoyuan Lighting Co.,Ltd. |
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Effective date of registration: 20170414 Address after: 315408 Yuyao Province Economic Development Zone, Zhejiang City, Southern District, Ningbo Road Applicant after: NINGBO LIAOYUAN LIGHTING BUSINESS CO.,LTD. Address before: 315408 Yuyao Economic Development Zone (Ningbo), Zhejiang, China Applicant before: Ningbo Liaoyuan Lamps Co.,Ltd. |
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| CB02 | Change of applicant information | ||
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Address after: 315408 Yuyao Province Economic Development Zone, Zhejiang City, Southern District, Ningbo Road Applicant after: NINGBO LIAOYUAN LIGHTING GROUP Co.,Ltd. Address before: 315408 Yuyao Province Economic Development Zone, Zhejiang City, Southern District, Ningbo Road Applicant before: NINGBO LIAOYUAN LIGHTING BUSINESS CO.,LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |