CN103194064A - High damping halogen-free silicon paste composition - Google Patents
High damping halogen-free silicon paste composition Download PDFInfo
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- CN103194064A CN103194064A CN 201310127125 CN201310127125A CN103194064A CN 103194064 A CN103194064 A CN 103194064A CN 201310127125 CN201310127125 CN 201310127125 CN 201310127125 A CN201310127125 A CN 201310127125A CN 103194064 A CN103194064 A CN 103194064A
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Abstract
The invention relates to a high damping halogen-free silicon paste composition, which comprises modified high damping alloyed powder, a heat conduction filler, a halogen-free diluent and halogen-free silicon oil. Compared with the prior art, the high damping halogen-free silicon paste composition has the advantages that firstly the modified high damping alloyed powder not only ensures the insulation performance of the silicon paste, but also remarkably increases the heat-conducting property and anti-seismic noise reduction performance of the silicon paste; and secondly, the silicon oil is more environment-friendly due to the use of the halogen-free material. The high damping halogen-free silicon paste composition is practical and has a better industrial application prospect.
Description
Technical field
[0001] the present invention relates to silicon cream technical field, is improvements over the prior art, is specifically related to a kind of high damping Halogen silicon composite cream.
Background technology
In hyundai electronics industrial technology field, along with improving constantly of electronic technology and people's living standard, the miniaturization of electronic product, high speed and multifunction are more remarkable.Electronic product produces more heat in operation process, if these heats can not obtain in time, effectively distribute, will have a strong impact on the running speed of electronic product, even may damage electronic product.Therefore, how these heats are distributed fast, become an important techniques problem.At present, adopt radiator element to carry out heat usually and distribute, but radiator element and heating contacting between the components and parts is always tight inadequately, can't realize efficiently distributing of heat, is difficult to guarantee that electronic product continues highly reliable running under use temperature.Silicon cream is filled in a kind of material between radiator element and the heating components and parts just, and its performance quality is directly connected to the effect that the electronic product heat distributes, and has influence on use properties and the long-term reliability of electronic product.Electronic product often inevitably produces vibrations in processes such as use, transportation, silicon cream and electronic product are produced material impact.Present silicon cream often makes it can't bear corresponding vibrations and disturbs because the damping noise reduction performance is bad, can't in time help radiator element that the heat in the electronic product is distributed efficiently, thereby causes electronic product to break down or scrap.
Aluminium zinc is a kind of low-cost high damping alloy commonly used at present, and it is applicable to production in enormous quantities, and low, the every performance of expense is more excellent, is a kind of high damping alloy that has application prospect.It excites the metal inside heat effect under extraneous stress, thereby eliminates the crystal boundary dyskinesia, produces motion, generates in-fighting, thereby plays the effect of damping noise reduction; And the damping capacity of this class damping alloy improves with the temperature rising; Temperature is more high, and the damping capacity of alloy is more strong.But simple aluminium zinc is on-insulated, directly joins problems such as may causing short circuit in the silicon cream.Therefore, must adopt appropriate means that aluminium zinc is carried out surface modification.
Summary of the invention
A kind of high damping Halogen silicon composite cream that the objective of the invention is to avoid above-mentioned weak point of the prior art and provide.The high damping Halogen silicon cream of the present invention's preparation not only has excellent heat conductivility, insulating property, and has excellent damping performance and environmental-protecting performance.
Purpose of the present invention can realize by following measure:
A kind of high damping Halogen of the present invention silicon composite cream, ingredient weight percent (%) is:
Modification high damping alloy powder 3 ~ 45%;
Heat conductive filler 15 ~ 75%;
Halogen thinner 0.5 ~ 10%;
All the other are Halogen silicone oil, and each composition weight sum is 100%.
Described modification high damping alloy powder is the aluminium zinc powder of surperficial clad nano aluminium nitride; Described modification high damping alloy powder directly is 20 ~ 100 μ m, is preferably 25 ~ 45 μ m again; Described nano aluminum nitride surface coating thickness is 1 ~ 10 μ m, is preferably 2 ~ 6 μ m again.By the modification of surperficial clad nano aluminium nitride, effectively avoid using merely the problem of aluminium zinc powder existence, under the prerequisite that guarantees insulativity, effectively improve thermal conductivity and the antidetonation noise abatement performance of silicon cream.
Described heat conductive filler is one or more in aluminum oxide, nano aluminium oxide, aluminium nitride, nano aluminum nitride, boron nitride, the nm-class boron nitride.It mainly act as the heat conductivility that silicon cream provides the basis.
Described Halogen thinner is one or more in octanol, sherwood oil, heptane, turps, diprotic acid fat, the methyl ethyl ketone.It mainly acts on is dilution silicon cream, makes it have good construction performance.
Described Halogen silicone oil is one or more in methyl-silicone oil, dimethyl silicone oil, ring dimethyl silicone oil, methyl ethoxy silicone oil, vinyl silicone oil, the dimethyl vinyl silicone oil, is preferably in dimethyl silicone oil, ring dimethyl silicone oil, the methyl-silicone oil one or both.It mainly acts on is to disperse modification high damping alloy powder and heat conductive filler, guarantees that silicon cream has suitable flowing property and long work-ing life.
The preparation method of a kind of high damping Halogen of the present invention silicon composite cream, comprise following two steps: (1) adds Halogen silicone oil successively and 0.5 ~ 10% Halogen thinner is stirred in vacuum mixer evenly, wherein vacuum tightness is 0.07 ~ 0.09 MPa, stirring velocity is 250 rev/mins ~ 550 rev/mins, simultaneously the speed with 5 ℃/min ± 2 ℃/min is warming up to 60 ℃ ± 2 ℃, continues to stir 30min ± 2min to the temperature back; (2) add 3 ~ 45% modification high damping alloy powder, 15 ~ 75% heat conductive fillers again and be stirred to evenly in vacuum mixer, wherein vacuum tightness is 0.07 ~ 0.09 MPa, and stirring velocity is 150 rev/mins ~ 450 rev/mins; Stop heating then, take out after being cooled to room temperature with the speed of 2 ℃/min ± 1 ℃/min, namely get a kind of high damping Halogen of the present invention silicon composite cream.
Than prior art, the present invention has following advantage: the one, and the insulating property of silicon cream have not only been guaranteed in the interpolation of modification high damping alloy powder, and have significantly strengthened heat conductivility and the antidetonation noise abatement performance of silicon cream; The 2nd, the use of Halogen material makes silicon cream have more the feature of environmental protection.Practicality of the present invention has bigger prospects for commercial application.
Embodiment
Embodiment 1: (particle diameter is 25 ~ 45 μ m to the aluminium zinc powder of surperficial clad nano aluminium nitride; Coating thickness is 5 μ m) 3%;
Nano aluminium oxide 75%;
Turps 0.5%;
Dimethyl silicone oil 21.5%.
A kind of high damping Halogen of the present invention silicon composite cream is prepared according to following steps: (1) adds 21.5% dimethyl silicone oil successively and 0.5% turps is stirred in vacuum mixer evenly, wherein vacuum tightness is 0.08 MPa, stirring velocity is 500 rev/mins, simultaneously the speed with 5 ℃/min ± 2 ℃/min is warming up to 60 ℃ ± 2 ℃, continues to stir 30min to the temperature back; (2) (particle diameter is 25 ~ 45 μ m to add the aluminium zinc powder of 3% surperficial clad nano aluminium nitride again; Coating thickness is 5 μ m), 75% nano aluminium oxide is stirred in the vacuum mixer evenly, wherein vacuum tightness is 0.08 MPa, stirring velocity is 300 rev/mins; Stop heating then, take out after being cooled to room temperature with the speed of 2 ℃/min ± 1 ℃/min, namely get a kind of high damping Halogen of the present invention silicon composite cream.
Embodiment 2: (particle diameter is 25 ~ 45 μ m to the aluminium zinc powder of surperficial clad nano aluminium nitride; Coating thickness is 5 μ m) 30%;
Nano aluminium oxide 35%;
Nano aluminum nitride 15%;
Heptane 3%;
Turps 2%;
Methyl-silicone oil 5%;
Dimethyl silicone oil 10%.
A kind of high damping Halogen of the present invention silicon composite cream is prepared according to following steps: (1) adds 5% methyl-silicone oil, 10% dimethyl silicone oil, 3% heptane and 2% turps successively and is stirred in vacuum mixer evenly, wherein vacuum tightness is 0.08 MPa, stirring velocity is 500 rev/mins, simultaneously the speed with 5 ℃/min ± 2 ℃/min is warming up to 60 ℃ ± 2 ℃, continues to stir 30min to the temperature back; (2) (particle diameter is 25 ~ 45 μ m to add the aluminium zinc powder of 30% surperficial clad nano aluminium nitride again; Coating thickness is 5 μ m), 35% nano aluminium oxide and 15% nano aluminum nitride be stirred to evenly in vacuum mixer, wherein vacuum tightness is 0.08 MPa, stirring velocity is 300 rev/mins; Stop heating then, take out after being cooled to room temperature with the speed of 2 ℃/min ± 1 ℃/min, namely get a kind of high damping Halogen of the present invention silicon composite cream.
Embodiment 3: (particle diameter is 25 ~ 45 μ m to the aluminium zinc powder of surperficial clad nano aluminium nitride; Coating thickness is 5 μ m) 45%;
Aluminum oxide 8%;
Nano aluminium oxide 7%;
Turps 10%;
Ring dimethyl silicone oil 30%.
A kind of high damping Halogen of the present invention silicon composite cream is prepared according to following steps: (1) adds 30% ring dimethyl silicone oil successively and 10% turps is stirred in vacuum mixer evenly, wherein vacuum tightness is 0.08 MPa, stirring velocity is 500 rev/mins, simultaneously the speed with 5 ℃/min ± 2 ℃/min is warming up to 60 ℃ ± 2 ℃, continues to stir 30min to the temperature back; (2) (particle diameter is 25 ~ 45 μ m to add the aluminium zinc powder of 45% surperficial clad nano aluminium nitride again; Coating thickness is 5 μ m), 8% aluminum oxide and 7% nano aluminium oxide be stirred to evenly in vacuum mixer, wherein vacuum tightness is 0.08 MPa, stirring velocity is 300 rev/mins; Stop heating then, take out after being cooled to room temperature with the speed of 2 ℃/min ± 1 ℃/min, namely get a kind of high damping Halogen of the present invention silicon composite cream.
Table 1 is the salient features test correlation data of embodiment of the invention 1-3 and a commercially available silicon cream.
The salient features comparison of test results data of table 1 embodiment 1-3
Claims (7)
1. high damping Halogen silicon composite cream, ingredient weight percent (%) is:
Modification high damping alloy powder 3 ~ 45%;
Heat conductive filler 15 ~ 75%;
Halogen thinner 0.5 ~ 10%;
All the other are Halogen silicone oil, and each composition weight sum is 100%.
2. a kind of high damping Halogen silicon composite cream according to claim 1, it is characterized in that: described modification high damping alloy powder is the aluminium zinc powder of surperficial clad nano aluminium nitride.
3. a kind of high damping Halogen silicon composite cream according to claim 2, it is characterized in that: described modification high damping alloy powder directly is 20 ~ 100 μ m, is preferably 25 ~ 45 μ m again.
4. a kind of high damping Halogen silicon composite cream according to claim 2 is characterized in that: described nano aluminum nitride surface coating thickness is 1 ~ 10 μ m, is preferably 2 ~ 6 μ m again.
5. a kind of high damping Halogen silicon composite cream according to claim 1, it is characterized in that: described heat conductive filler is one or more in aluminum oxide, nano aluminium oxide, aluminium nitride, nano aluminum nitride, boron nitride, the nm-class boron nitride.
6. a kind of high damping Halogen silicon composite cream according to claim 1, it is characterized in that: described Halogen thinner is one or more in octanol, sherwood oil, heptane, turps, diprotic acid fat, the methyl ethyl ketone.
7. a kind of high damping Halogen silicon composite cream according to claim 1, it is characterized in that: described Halogen silicone oil is one or more in methyl-silicone oil, dimethyl silicone oil, ring dimethyl silicone oil, methyl ethoxy silicone oil, vinyl silicone oil, the dimethyl vinyl silicone oil, is preferably in dimethyl silicone oil, ring dimethyl silicone oil, the methyl-silicone oil one or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310127125 CN103194064A (en) | 2013-04-15 | 2013-04-15 | High damping halogen-free silicon paste composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310127125 CN103194064A (en) | 2013-04-15 | 2013-04-15 | High damping halogen-free silicon paste composition |
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| CN103194064A true CN103194064A (en) | 2013-07-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905700A (en) * | 2017-02-13 | 2017-06-30 | 青岛爱博瑞隔振技术有限公司 | A kind of vibrating isolation system liquid damping oil and its compound method |
| CN109735109A (en) * | 2019-01-09 | 2019-05-10 | 河北洛德铁路配件有限公司 | Elastic damping clay and preparation method thereof |
-
2013
- 2013-04-15 CN CN 201310127125 patent/CN103194064A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106905700A (en) * | 2017-02-13 | 2017-06-30 | 青岛爱博瑞隔振技术有限公司 | A kind of vibrating isolation system liquid damping oil and its compound method |
| CN109735109A (en) * | 2019-01-09 | 2019-05-10 | 河北洛德铁路配件有限公司 | Elastic damping clay and preparation method thereof |
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Application publication date: 20130710 |