CN103522685A - Composite type heat radiation silica gel pad and preparation method thereof - Google Patents
Composite type heat radiation silica gel pad and preparation method thereof Download PDFInfo
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- CN103522685A CN103522685A CN201310470477.1A CN201310470477A CN103522685A CN 103522685 A CN103522685 A CN 103522685A CN 201310470477 A CN201310470477 A CN 201310470477A CN 103522685 A CN103522685 A CN 103522685A
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Abstract
The invention discloses a composite type heat radiation silica gel pad divided into an adhesion layer and a flat layer adhered with the adhesion layer, and provides a preparation method for the silica gel pad. The preparation method comprises the steps: coating a pasty material B between an upper-layer PET release film and a lower-layer PET release film, calendering to form a thin sheet with the thickness of 0.2-0.5 mm, solidifying for 0.5 h at the temperature of 100-150 DEG C, and uncovering the upper-layer release film; then coating a pasty material A on the thin sheet having the pasty material B solidified, putting again the uncovered upper-layer release film back to make the pasty material A between the upper-layer release film and the thin sheet having the pasty material B solidified, integrally calendering into a sheet with the thickness of 2.0-3.0 mm, solidifying for 0.5 h at the temperature of 110-130 DEG C, and cutting. The composite type heat radiation sheet obtained by the method allows two side thicknesses with different requirements to be freely adjusted in a certain range, and the overall service life of the product can be significantly improved.
Description
Technical field
The present invention relates to thermal grease technical field.Relate in particular to a kind of compound thermal grease pad, for filling the radiator gap of electronics industry, improve life-span and the stability of heat dissipation element.Can use at-54 ℃-200 ℃ long-term.
Background technology
Electronic component can constantly gather heat in long-time use procedure, has a strong impact on the service life of product.Radiating silica gel sheet good heat dissipation effect, easy to use, can in time the heat gathering be derived, be more and more applied in heater members and radiating element, greatly improve the service life of product.
In some application scenarios, the radiating surface of heater members or radiating element one side is regular, an irregularity.The one side of irregularity requires stickiness good, and regular one side requires planarization good.The object of this invention is to provide a kind of compound thermal grease pad and preparation method thereof, meet the different instructions for uses of radiating surface.
The applicant once be take Chinese invention patent that publication number is CN 102585757 B and was disclosed the upper and lower surface viscosity needs different from intensity that " a kind of silica gel radiating fin and preparation method thereof " realizes radiating silica gel sheet, the stressed probability of one side that intensity is large is larger, tough one side laminating is tightr, make properties of product more stable, extended product service life.Then yet this technology still exists one side that certain defect is as large in intensity only to brush one deck inorganic agent solidifies for changing adhesion strength, thickness can not freely be adjusted, once this very thin one deck gluing layer solidifying on this top layer is destroyed, fin integral body will soon lose efficacy, and therefore still had improved space.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, a kind of compound thermal grease pad and preparation method thereof is provided, meet the different instructions for uses of the radiating surface of heater members or radiating element: the surface hardness that silicagel pad stickiness is good is little, and viscosity is large; Planarization good a surface hardness large, viscosity is little, ability of anti-deformation is strong.For realizing this object, technical scheme of the present invention is:
This compound thermal grease pad, the levelling blanket that is divided into laminating layer that thickness is 1.5-2.5mm and is 0.2-0.5mm with the bonding thickness of laminating layer, laminating layer is prepared from by the raw material of following weight portion: 100 parts of vinyl silicone oils, 1 ~ 3 part of methyl-silicone oil, 0.5 ~ 2 part of containing hydrogen silicone oil, 0.1 ~ 0.3 part of catalyst, 1 ~ 3 part of silane coupler, 0.02 ~ 0.05 part, inhibitor, 200 ~ 400 parts, 200 ~ 500 parts of aluminium hydroxides of aluminium oxide; Levelling blanket is prepared from by the raw material of following weight portion: 100 parts of vinyl silicone oils, 5 ~ 10 parts of containing hydrogen silicone oils, 1 ~ 1.5 part of catalyst, inhibitor 0.02-0.08 part, 800 ~ 1000 parts, aluminium oxide.
Compared with prior art, the present invention adopts the beneficial effect of technique scheme to be: different two face thicknesses that require of compound fin can freely be adjusted within the specific limits, can significantly improve the whole service life of product.
The preparation method of this compound thermal grease pad, comprises following steps:
1) 0.02 ~ 0.05 part of 100 parts of vinyl silicone oil, 1 ~ 3 part of methyl-silicone oil, 0.5 ~ 2 part of containing hydrogen silicone oil, inhibitor is joined in stirred tank and stirred 0.5 hour, rotating speed is 100r～180rpm, then add 200 ~ 500 parts, aluminium oxide, 200 ~ 400 parts of stirrings of aluminium hydroxide 20 minutes, rotating speed is 60r～80rpm; After stirring, add 1 ~ 3 part of silane coupler, stir 30 minutes, rotating speed is 20r～40rpm; Add 0.1 ~ 0.3 part of catalyst to stir 30 minutes, rotating speed is 20r～40rpm; Vacuumize and slough bubble, obtain paste material A;
2) 800 ~ 1000 parts of 100 parts of vinyl silicone oils, 5 ~ 10 parts of containing hydrogen silicone oils, inhibitor 0.02-0.08 part, aluminium oxide are joined in stirred tank and stirred 2 hours, rotating speed is 120r～150rpm, after stirring, add 1 ~ 1.5 part of catalyst to stir 30 minutes, vacuumize and slough bubble, obtain paste material B;
3) paste material B being coated in to calendering formation between upper and lower two-layer PET mould release membrance is the thin slice of 0.2 ~ 0.5 millimeter of thickness, at 100 ~ 150 ℃, solidifies 0.5 hour, takes off from upper strata mould release membrance; Again paste material A is coated on the thin slice after paste material B solidifies, by take off from upper strata mould release membrance again put back to and make between the thin slice of paste material A after upper strata mould release membrance and paste material B solidify, integral body is rolled into the sheet of 2.0 ~ 3.0 millimeters, at 110 ~ 130 ℃, solidifies 0.5 hour, cuts.
Particularly, the contents of ethylene of described vinyl silicone oil is 0.2-0.5%; The active hydrogen content of containing hydrogen silicone oil is 0.2-0.5%; Catalyst is platinum catalyst; Silane coupler is γ-amine propyl-triethoxysilicane; Inhibitor is amine inhibitor.
Compared with prior art, the present invention adopts the beneficial effect of technique scheme to be: different two face thicknesses that require of compound fin can freely be adjusted within the specific limits, can significantly improve the whole service life of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of the compound thermal grease pad of the present invention, and wherein, 1 is laminating layer, and 2 is levelling blanket.
The specific embodiment
Describe the present invention below in detail and provide several embodiment, umber is weight portion.
Embodiment 1
1) 0.02 part, 0.5 part of containing hydrogen silicone oil, amine inhibitor that 100 parts of the vinyl silicone oils that is 0.2% by contents of ethylene, 1 part of methyl-silicone oil, active hydrogen content are 0.2% join in stirred tank and stir 0.5 hour, rotating speed is 100rpm, then add 200 parts, aluminium oxide, 200 parts of stirrings of aluminium hydroxide 20 minutes, rotating speed is 60rpm; After stirring, add 1 part of γ-amine propyl-triethoxysilicane, stir 30 minutes, rotating speed is 20rpm; Add 0.1 part of platinum catalyst to stir 30 minutes, rotating speed is 20rpm; Vacuumize and slough bubble, obtain paste material A;
2) 800 parts, 0.02 part, 5 parts of containing hydrogen silicone oils, amine inhibitor, aluminium oxide that 100 parts of the vinyl silicone oils that is 0.2% by contents of ethylene, active hydrogen content are 0.2% join in stirred tank and stir 2 hours, rotating speed is 120rpm, after stirring, add 1 part of γ-amine propyl-triethoxysilicane to stir 30 minutes, vacuumize and slough bubble, obtain paste material B;
3) paste material B being coated in to calendering formation between upper and lower two-layer PET mould release membrance is the thin slice of 0.2 millimeter of thickness, at 100 ℃, solidifies 0.5 hour, takes off from upper strata mould release membrance; Again paste material A is coated on the thin slice after paste material B solidifies, by take off from upper strata mould release membrance again put back to and make between the thin slice of paste material A after upper strata mould release membrance and paste material B solidify, integral body is rolled into the sheet of 2.0 millimeters, at 110 ℃, solidify 0.5 hour, cut into the sheet of 200mm * 200mm, make described composite radiating silicagel pad, this composite radiating silicagel pad divide for by paste material A solidify the laminating layer 1 form and with laminating layer 1 bonding by paste material B, solidify the levelling blanket 2 forming.
Embodiment 2
1) 0.05 part, 2 parts of containing hydrogen silicone oils, amine inhibitor that 100 parts of the vinyl silicone oils that is 0.5% by contents of ethylene, 3 parts of methyl-silicone oils, active hydrogen content are 0.5% join in stirred tank and stir 0.5 hour, rotating speed is 180rpm, then add 500 parts, aluminium oxide, 400 parts of stirrings of aluminium hydroxide 20 minutes, rotating speed is 80rpm; After stirring, add 3 parts of γ-amine propyl-triethoxysilicanes, stir 30 minutes, rotating speed is 40rpm; Add 0.3 part of platinum catalyst to stir 30 minutes, rotating speed is 40rpm; Vacuumize and slough bubble, obtain paste material A;
2) 1000 parts, 0.08 part, 10 parts of containing hydrogen silicone oils, amine inhibitor, aluminium oxide that 100 parts of the vinyl silicone oils that is 0.5% by contents of ethylene, active hydrogen content are 0.5% join in stirred tank and stir 2 hours, rotating speed is 150rpm, after stirring, add 1.5 parts of γ-amine propyl-triethoxysilicanes to stir 30 minutes, vacuumize and slough bubble, obtain paste material B;
3) paste material B being coated in to calendering formation between upper and lower two-layer PET mould release membrance is the thin slice of 0.5 millimeter of thickness, at 150 ℃, solidifies 0.5 hour, takes off from upper strata mould release membrance; Again paste material A is coated on the thin slice after paste material B solidifies, by take off from upper strata mould release membrance again put back to and make between the thin slice of paste material A after upper strata mould release membrance and paste material B solidify, integral body is rolled into the sheet of 3 millimeters, at 130 ℃, solidify 0.5 hour, cut into the sheet of 20mm * 20mm, make described composite radiating silicagel pad, this composite radiating silicagel pad divide for by paste material A solidify the laminating layer 1 form and with laminating layer 1 bonding by paste material B, solidify the levelling blanket 2 forming.
Embodiment 3
1) 0.035 part, 1.25 parts of containing hydrogen silicone oils, amine inhibitor that 100 parts of the vinyl silicone oils that is 0.35% by contents of ethylene, 2 parts of methyl-silicone oils, active hydrogen content are 0.35% join in stirred tank and stir 0.5 hour, rotating speed is 140rpm, then add 350 parts, aluminium oxide, 300 parts of stirrings of aluminium hydroxide 20 minutes, rotating speed is 70rpm; After stirring, add 2 parts of γ-amine propyl-triethoxysilicanes, stir 30 minutes, rotating speed is 30rpm; Add 0.2 part of platinum catalyst to stir 30 minutes, rotating speed is 30rpm; Vacuumize and slough bubble, obtain paste material A;
2) 900 parts, 0.05 part, 7.5 parts of containing hydrogen silicone oils, amine inhibitor, aluminium oxide that 100 parts of the vinyl silicone oils that is 0.35% by contents of ethylene, active hydrogen content are 0.35% join in stirred tank and stir 2 hours, rotating speed is 135rpm, after stirring, add 1.25 parts of γ-amine propyl-triethoxysilicanes to stir 30 minutes, vacuumize and slough bubble, obtain paste material B;
3) paste material B being coated in to calendering formation between upper and lower two-layer PET mould release membrance is the thin slice of 0.35 millimeter of thickness, at 130 ℃, solidifies 0.5 hour, takes off from upper strata mould release membrance; Again paste material A is coated on the thin slice after paste material B solidifies, by take off from upper strata mould release membrance again put back to and make between the thin slice of paste material A after upper strata mould release membrance and paste material B solidify, integral body is rolled into the sheet of 2.5 millimeters, at 120 ℃, solidify 0.5 hour, cut into the sheet of 10mm * 25mm, make described composite radiating silicagel pad, this composite radiating silicagel pad divide for by paste material A solidify the laminating layer 1 form and with laminating layer 1 bonding by paste material B, solidify the levelling blanket 2 forming.
The test result of above-mentioned three embodiment is as shown in table 1 below.
Claims (3)
1. a compound thermal grease pad, the levelling blanket (2) that is divided into the laminating layer that thickness is 1.5-2.5mm (1) and is 0.2-0.5mm with the bonding thickness of laminating layer (1), it is characterized in that laminating layer (1) is prepared from by the raw material of following weight portion: 100 parts of vinyl silicone oils, 1 ~ 3 part of methyl-silicone oil, 0.5 ~ 2 part of containing hydrogen silicone oil, 0.1 ~ 0.3 part of catalyst, 1 ~ 3 part of silane coupler, 0.02 ~ 0.05 part, inhibitor, 200 ~ 400 parts, 200 ~ 500 parts of aluminium hydroxides of aluminium oxide; Levelling blanket (2) is prepared from by the raw material of following weight portion: 100 parts of vinyl silicone oils, 5 ~ 10 parts of containing hydrogen silicone oils, 1 ~ 1.5 part of catalyst, inhibitor 0.02-0.08 part, 800 ~ 1000 parts, aluminium oxide.
2. a preparation method for compound thermal grease pad, comprises following steps:
1) 0.02 ~ 0.05 part of 100 parts of vinyl silicone oil, 1 ~ 3 part of methyl-silicone oil, 0.5 ~ 2 part of containing hydrogen silicone oil, inhibitor is joined in stirred tank and stirred 0.5 hour, rotating speed is 100r～180rpm, then add 200 ~ 500 parts, aluminium oxide, 200 ~ 400 parts of stirrings of aluminium hydroxide 20 minutes, rotating speed is 60r～80rpm; After stirring, add 1 ~ 3 part of silane coupler, stir 30 minutes, rotating speed is 20r～40rpm; Add 0.1 ~ 0.3 part of catalyst to stir 30 minutes, rotating speed is 20r～40rpm; Vacuumize and slough bubble, obtain paste material A;
2) 800 ~ 1000 parts of 100 parts of vinyl silicone oils, 5 ~ 10 parts of containing hydrogen silicone oils, inhibitor 0.02-0.08 part, aluminium oxide are joined in stirred tank and stirred 2 hours, rotating speed is 120r～150rpm, after stirring, add 1 ~ 1.5 part of catalyst to stir 30 minutes, vacuumize and slough bubble, obtain paste material B;
3) paste material B being coated in to calendering formation between upper and lower two-layer PET mould release membrance is the thin slice of 0.2 ~ 0.5 millimeter of thickness, at 100 ~ 150 ℃, solidifies 0.5 hour, takes off from upper strata mould release membrance; Again paste material A is coated on the thin slice after paste material B solidifies, by take off from upper strata mould release membrance again put back to and make between the thin slice of paste material A after upper strata mould release membrance and paste material B solidify, integral body is rolled into the sheet of 2.0 ~ 3.0 millimeters, at 110 ~ 130 ℃, solidifies 0.5 hour, cuts.
3. the preparation method of a kind of compound thermal grease pad of claim 1 or a kind of compound thermal grease pad of claim 2, the contents of ethylene that it is characterized in that described vinyl silicone oil is 0.2-0.5%; The active hydrogen content of containing hydrogen silicone oil is 0.2-0.5%; Catalyst is platinum catalyst; Silane coupler is γ-amine propyl-triethoxysilicane; Inhibitor is amine inhibitor.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104943287A (en) * | 2015-07-02 | 2015-09-30 | 上海茂霖高分子科技股份有限公司 | Heat-conduction silicone rubber sheet and production method thereof |
| CN105368052A (en) * | 2015-11-13 | 2016-03-02 | 深圳德邦界面材料有限公司 | Compound heat conduction silica gel pad and preparation method thereof |
| CN105368051A (en) * | 2015-11-13 | 2016-03-02 | 深圳德邦界面材料有限公司 | High-heat conductivity heat-conduction silica gel pad and preparation method thereof |
| CN105601972A (en) * | 2016-03-15 | 2016-05-25 | 惠州赛力珑新材料有限公司 | Silicone-rubber composite material for electronic product and preparation method |
| CN107396610A (en) * | 2017-08-15 | 2017-11-24 | 深圳市鸿富诚屏蔽材料有限公司 | Anisotropy insulating heat-conductive pad and its manufacture method |
| CN109318561A (en) * | 2018-09-28 | 2019-02-12 | 深圳市宝力科技有限公司 | A kind of soft or hard combination heat-conducting pad and preparation method thereof |
| CN111630084A (en) * | 2018-01-17 | 2020-09-04 | 信越化学工业株式会社 | Heat-conductive film-like cured product, method for producing same, and heat-conductive member |
| CN112625658A (en) * | 2019-10-09 | 2021-04-09 | 广东乐普泰新材料科技有限公司 | Efficient heat-conducting gasket and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104943287A (en) * | 2015-07-02 | 2015-09-30 | 上海茂霖高分子科技股份有限公司 | Heat-conduction silicone rubber sheet and production method thereof |
| CN105368052A (en) * | 2015-11-13 | 2016-03-02 | 深圳德邦界面材料有限公司 | Compound heat conduction silica gel pad and preparation method thereof |
| CN105368051A (en) * | 2015-11-13 | 2016-03-02 | 深圳德邦界面材料有限公司 | High-heat conductivity heat-conduction silica gel pad and preparation method thereof |
| CN105601972A (en) * | 2016-03-15 | 2016-05-25 | 惠州赛力珑新材料有限公司 | Silicone-rubber composite material for electronic product and preparation method |
| CN107396610A (en) * | 2017-08-15 | 2017-11-24 | 深圳市鸿富诚屏蔽材料有限公司 | Anisotropy insulating heat-conductive pad and its manufacture method |
| CN107396610B (en) * | 2017-08-15 | 2020-08-18 | 深圳市鸿富诚屏蔽材料有限公司 | Anisotropic insulating thermal pad and method for manufacturing same |
| CN111630084A (en) * | 2018-01-17 | 2020-09-04 | 信越化学工业株式会社 | Heat-conductive film-like cured product, method for producing same, and heat-conductive member |
| CN109318561A (en) * | 2018-09-28 | 2019-02-12 | 深圳市宝力科技有限公司 | A kind of soft or hard combination heat-conducting pad and preparation method thereof |
| CN112625658A (en) * | 2019-10-09 | 2021-04-09 | 广东乐普泰新材料科技有限公司 | Efficient heat-conducting gasket and preparation method thereof |
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| CN103522685B (en) | 2016-03-02 |
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