CN100491490C - Low-viscosity heat-conductive adhesive and process for preparing same - Google Patents
Low-viscosity heat-conductive adhesive and process for preparing same Download PDFInfo
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- CN100491490C CN100491490C CNB2006101181584A CN200610118158A CN100491490C CN 100491490 C CN100491490 C CN 100491490C CN B2006101181584 A CNB2006101181584 A CN B2006101181584A CN 200610118158 A CN200610118158 A CN 200610118158A CN 100491490 C CN100491490 C CN 100491490C
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Abstract
The invention discloses a high-heat conductive low-viscosity adhesive and preparing method in the adhesive preparing technical domain, which comprises the following parts: 40-45% bisphenol A epoxide resin, 30-35% modified heat conductive fill Al2O3 and BN, 20-25% solvent acetone or toluene, 2-3% hardener acid anhydride or imidazole and 1-2% suspension adjuvant, accelerant and diluent. the preparing method comprises the following steps: allocating modified heat conductive filler Al2O3 and BN; adopting isocyanate or hyperfriend polyester as modifier; adding certain quantity of composite filler of Al2O3 and BN and hardener in the bisphenol A epoxide resin; stirring through ultrasound; mixing in the milling machine to prepare the dispersing system; adding adjuvant, accelerant and diluent sequently; stirring slowly; generating the product with heat conductivity at 11.4W/m .K and viscosity less than 139.0CP.
Description
Technical field
The present invention relates to a kind of high heat conduction, low-viscosity heat-conductive adhesive and preparation method thereof, belong to adhesive preparation Technology field.
Background technology
Thermal conductive adhesive is used for bonding and the encapsulation under the electrical isolation occasion of electronic apparatus components and parts more.Along with the development of integrated technology in the electronic industry and package technique, the miniaturization of the volume of electronic devices and components and logical circuit trend, more and more higher for the heat conduction of bonding and packaged material, insulation, performance demands such as heat-resisting.Wherein improve thermal conductivity and be problem demanding prompt solution day by day.
On the thermal conductivity that improves Resins, epoxy, a large amount of research work have been done abroad.
U.S. Pat 6500891B1 has reported that the filler that adds in the preparation heat-conduction epoxy resin tackiness agent is spherical micron order aluminum oxide, alumina powder jointed its stable suspersion that makes that adds is in tackiness agent, viscosity is 33 under the room temperature when filling adding amount is 65wt%, more than the 344CP; Its viscosity is 60 when filling adding amount is 70wt%, 020CP, and thermal conductivity is 1.456W/mK; Heat-conducting glue stability is not enough as can be seen, viscosity is excessive.U.S. Pat 6060539 has reported that the add-on of preparation Resins, epoxy fat stick adding alumina packing is 35～75Vol%, and thermal conductivity is about 0.7w/mK.U.S. Pat 0092654A1 has reported that the used filler of preparation heat-conducting glue is micron order silicon carbide and aluminum oxide, and the viscosity that loading level reaches 60～90wt% heat-conducting glue is 72, and more than the 000mPsS, thermal conductivity is greater than 2W/mK.
Thermal conductivity is not enough when hanging down filling as can be seen from above-mentioned patent documentation, heat-conducting glue was stable inadequately when height was filled, viscosity is excessive, and flexibility is also not so good simultaneously.
Present heat conductive insulating tackiness agent is to fill heat conductive filler by height to obtain high thermal conductivity, and high to fill what cause be the increase of viscosity, the mobile reduction, and this will influence processing characteristics.The high binding agent that obtains of filling, higher owing to viscosity, adhesive segment thickness is increased, thereby influence radiating efficiency, also can influence snappiness in addition, its mechanical property is also influenced.If but reduce the heat conduction loading level in order to reduce viscosity, then can reduce thermal conductivity.So the kind of the mineral filler of using and usage quantity thereof are the key issues of the low viscous tackiness agent of the high heat conduction of preparation.
The nanometer inorganic filler that adds modification in Resins, epoxy can improve the performance of resin adhesive.
Summary of the invention
The purpose of this invention is to provide dielectric adhesive of a kind of low viscosity high thermal conductivity and preparation method thereof.
A kind of low-viscosity heat-conductive adhesive of the present invention is characterized in that having following composition and weight percent:
Bisphenol A epoxide resin 40～45%,
The heat conductive filler Al of modification
2O
3With BN 30～35%,
Solvent acetone or toluene 20～25%,
Solidifying agent acid anhydrides or imidazoles 2～3%,
Suspension aids, promotor, thinner 1～2%.
The heat conductive filler Al of above-mentioned modification
2O
3And BN, wherein aluminum oxide is nanometer α-Al
2O
3, median size is 100nm, and BN is hexagonal flake micron order BN, and its median size is 1 μ m; Al
2O
3With the weight ratio of BN be: Al
2O
3: BN=1:2～3.5.
Above-mentioned solvent is preferably acetone; It is methyl tetrahydrochysene acid anhydrides that above-mentioned solidifying agent is preferably acid anhydrides.
A kind of low-viscosity heat-conductive adhesive of the present invention is characterized in that having following preparation process and step:
A. the heat conductive filler that at first prepares modification is Al
2O
3Composite powder with BN: with a certain amount of powder Al
2O
3With BN respectively under the argon shield situation, under 60～80 ℃, powder surface is carried out graft modification with isocyanic ester or hyper-branched polyester properties-correcting agent; Composite powder after the modification is stand-by;
B. prepare burden by above-mentioned weight percent, in bisphenol A epoxide resin, add the Al of a certain amount of modification
2O
3With BN composite powder filler and solidifying agent, stir with ultrasonic, and be mixed and made into the dispersion system of stable homogeneous with ball mill, add suspension aids, promotor, thinner and solvent then successively; Stir slowly that to make stably dispersing homogeneous thermal conductive adhesive standby, tackiness agent poured into to vacuumize in the mould remove behind the solvent follow procedure and heat up and solidify, promptly 120 ℃ 2 hours, 150 ℃ 2 hours, 180 ℃ 2 hours, finally make thermal conductive adhesive and solidify film and carry out performance test.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1
The technological process and the step of present embodiment are as follows:
(1) select compositing formula from the viscosity heat-conducting glue:
Bisphenol A epoxide resin 44.83%,
The heat conductive filler Al of modification
2O
36.90%,
The heat conductive filler BN 24.13% of modification,
Solvent acetone and solidifying agent, auxiliary agent 24.14%.
(2) the good modified filler of prepared beforehand:
With median size is nanometer α-Al of 100nm
2O
3, under the argon shield situation, with isocyanate-modified dose powder surface is carried out graft modification in 60～80 ℃; In addition moving is that the BN of 1 μ m 2 hour carries out surface graft modification in 60～80 ℃ of reflux stirrings with the acetone soln of end carboxyl super branched polyester with median size under the argon shield situation; The mol ratio of powder and properties-correcting agent is 24:1.
(3) prepare burden by above-mentioned prescription, in above-mentioned bisphenol A epoxide resin, add the Al of above-mentioned a certain amount of modification
2O
3With BN composite powder filler, and the adding solidifying agent, stir with ultrasonic, and mix with ball mill, make the dispersion system of stable homogeneous, add suspension aids, promotor, thinner then successively, slowly stir, it is standby to make thermal conductive adhesive, tackiness agent is poured into to vacuumize in the mould and is removed behind the solvent follow procedure and heat up and solidify, promptly 120 ℃ 2 hours, 150 ℃ 2 hours, 180 ℃ 2 hours, finally make thermal conductive adhesive and solidify film, carry out the heat conductivility test.
Through instrument test, the film thermal conductivity of this thermal conductive adhesive is 11.4W/mK; Viscosity is 139.0CP.
Embodiment 2
The technological process of present embodiment and step and the foregoing description 1 are identical.The compositing formula of its selection that different is is:
Bisphenol A epoxide resin 44.83%,
The heat conductive filler Al of modification
2O
310.34%,
The heat conductive filler BN 20.69% of modification,
Solvent acetone and solidifying agent, auxiliary agent 24.14%.
Prepare thermal conductive adhesive by above-mentioned same step.
Through instrument test, the film thermal conductivity of this thermal conductive adhesive is 11.2W/mK; Viscosity is 138.5CP.
Embodiment 3
The technological process of present embodiment and step and the foregoing description 1 are identical.The compositing formula of its selection that different is is:
Bisphenol A epoxide resin 44.83%,
The heat conductive filler Al of modification
2O
313.79%,
The heat conductive filler BN 17.24% of modification,
Solvent acetone and solidifying agent, auxiliary agent 24.14%.
Prepare thermal conductive adhesive by above-mentioned same step.
Through instrument test, the film thermal conductivity of this thermal conductive adhesive is 10.80W/mK; Viscosity is 137.4CP.
In order to oppose frequently, the spy has done following comparison test.
Comparative example 1
In this comparative example, the component prescription of employing is:
Bisphenol A epoxide resin 54.17%,
Unmodified BN 16.67%,
Solvent acetone and solidifying agent, auxiliary agent 29.16%.
Prepare tackiness agent by the foregoing description 1 with quadrat method.
Through instrument test, the film thermal conductivity of this tackiness agent is 1.2W/mK; Viscosity is 300CP.
Comparative example 2
In this comparative example, the component prescription of employing is:
Bisphenol A epoxide resin 44.83%,
Unmodified BN 31.03%,
Solvent acetone and solidifying agent, auxiliary agent 24.14%.
Prepare tackiness agent by the foregoing description 1 with quadrat method.
Through instrument test, the film thermal conductivity of this tackiness agent is 2.4W/mK; Viscosity is 350CP.
Can find out that by the foregoing description and comparative example the prepared tackiness agent of the inventive method has the characteristics of low viscosity, high thermal conductivity, can be used for the bonding and the encapsulation of electronic apparatus components and parts suitably.
Claims (2)
1. low-viscosity heat-conductive adhesive is characterized in that having following composition and weight percent:
Bisphenol A epoxide resin 40～45%,
The heat conductive filler Al of modification
2O
3With BN 30～35%,
Solvent acetone or toluene 20～25%,
Solidifying agent acid anhydrides or imidazoles 2～3%,
Suspension aids, promotor, thinner 1～2%;
The heat conductive filler Al of described modification
2O
3And BN, wherein aluminum oxide is nanometer α-Al
2O
3, median size is 100nm, and BN is hexagonal flake micron order BN, and its median size is 1 μ m; Al
2O
3With the weight ratio of BN be: Al
2O
3: BN=1:2～3.5.
2. the described a kind of low-viscosity heat-conductive adhesive of claim 1 is characterized in that having following preparation process and step:
A. the heat conductive filler that at first prepares modification is Al
2O
3Composite powder with BN: with a certain amount of powder Al
2O
3With BN respectively under the argon shield situation, under 60～80 ℃, powder surface is carried out graft modification with isocyanic ester or hyper-branched polyester properties-correcting agent; Composite powder after the modification is stand-by;
B. prepare burden by above-mentioned weight percent, in bisphenol A epoxide resin, add the Al of a certain amount of modification
2O
3With BN composite powder filler and solidifying agent, stir with ultrasonic, and be mixed and made into the dispersion system of stable homogeneous with ball mill, add suspension aids, promotor, thinner and solvent then successively; Slowly stir, it is standby to make thermal conductive adhesive, and tackiness agent is poured into to vacuumize in the mould and removed behind the solvent follow procedure and heat up and solidify, promptly 120 ℃ 2 hours, 150 ℃ 2 hours, 180 ℃ 2 hours, finally make thermal conductive adhesive and solidify film and carry out performance test.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101181584A CN100491490C (en) | 2006-11-09 | 2006-11-09 | Low-viscosity heat-conductive adhesive and process for preparing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101181584A CN100491490C (en) | 2006-11-09 | 2006-11-09 | Low-viscosity heat-conductive adhesive and process for preparing same |
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|---|---|
| CN1962799A CN1962799A (en) | 2007-05-16 |
| CN100491490C true CN100491490C (en) | 2009-05-27 |
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| CN101787178B (en) * | 2010-03-09 | 2012-09-05 | 合复新材料科技(无锡)有限公司 | Heat-conduction electric insulation composite material component and manufacturing method thereof |
| CN102371739A (en) * | 2010-08-26 | 2012-03-14 | 富葵精密组件(深圳)有限公司 | Film and manufacturing method thereof |
| CN102020961A (en) * | 2010-11-12 | 2011-04-20 | 华烁科技股份有限公司 | High-heat-conduction flexible aluminum base copper-clad plate for LED heat radiating substrate |
| CN102464954B (en) * | 2010-11-19 | 2013-12-25 | 富葵精密组件(深圳)有限公司 | Composite adhesive sheet, film comprising same and manufacturing method of film |
| CN102719201B (en) * | 2011-03-29 | 2013-11-06 | 浙江三元电子科技有限公司 | Method for fabricating adhesive sheet |
| CN102220103A (en) * | 2011-04-21 | 2011-10-19 | 常州华天福杰光电科技有限公司 | Low viscosity heat-conducting adhesive for LED chips |
| CN102993996A (en) * | 2011-09-14 | 2013-03-27 | 赵元成 | High-thermal-conductivity film for aluminum-based copper-coated plate, and preparation method thereof |
| CN102602076B (en) * | 2012-03-01 | 2015-03-11 | 昆山市中迪新材料技术有限公司 | Heat conductive insulation sheet and structural adhesive |
| CN103351836B (en) * | 2013-07-04 | 2014-12-31 | 惠州力王佐信科技有限公司 | COB (Chip on Board) heat conduction adhesive |
| CN103435971B (en) * | 2013-07-19 | 2016-12-07 | 天津学子电力设备科技有限公司 | A kind of preparation method of high-heat-conductionepoxy epoxy resin for IGBT insulation substrate |
| CN103409094A (en) * | 2013-07-23 | 2013-11-27 | 合肥工业大学 | Composite glue made from micro-, nano-filler and epoxy resin, and preparation method and applications thereof |
| CN103642442B (en) * | 2013-12-02 | 2015-07-15 | 惠州市绿标光电科技有限公司 | High-heat-conduction insulating glue for aluminum substrate and preparation method thereof |
| US9464214B2 (en) | 2014-02-25 | 2016-10-11 | The Boeing Company | Thermally conductive flexible adhesive for aerospace applications |
| CN104479291A (en) * | 2014-12-04 | 2015-04-01 | 中国科学院过程工程研究所 | Heat-conducting insulated epoxy resin composition and preparation method and use thereof |
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| CN105254922A (en) * | 2015-10-26 | 2016-01-20 | 安徽大学 | Surface modification method of heat-conducting filler and application thereof |
| CN105255111B (en) * | 2015-10-27 | 2017-06-30 | 广州新莱福磁电有限公司 | A kind of preparation method and application of modified high thermal conductivity coefficient thermistor epoxide resin encapsulation material |
| CN106995673A (en) * | 2017-04-14 | 2017-08-01 | 广东工业大学 | A kind of low-gravity composite heat-conducting insulating cement and preparation method thereof |
| CN109111884A (en) * | 2018-07-06 | 2019-01-01 | 中国人民解放军陆军军事交通学院镇江校区 | A kind of ship machinery reparation adhesive and preparation method thereof |
| CN109251699B (en) * | 2018-11-23 | 2021-04-30 | 淄博金纪元研磨材有限公司 | High-specific-surface-area agglomerated spherical white corundum high-polymer nano composite filler and application thereof |
| CN110373139A (en) * | 2019-07-25 | 2019-10-25 | 天长市京发铝业有限公司 | A kind of high thermal conductivity coefficient copper-clad plate adhesive glue |
| CN112280516B (en) * | 2020-10-28 | 2023-04-18 | 上海库弗新材料有限公司 | UV-curable epoxy resin heat-conducting adhesive and preparation method thereof |
| CN112280517A (en) * | 2020-11-04 | 2021-01-29 | 无锡帝科电子材料股份有限公司 | Preparation method of high-performance heat-conducting glue |
| CN112928868B (en) * | 2021-03-31 | 2023-05-16 | 上海大学 | Construction method and structure of cooling complex of double-rotor disc type motor |
| CN113956664A (en) * | 2021-11-03 | 2022-01-21 | 青岛科技大学 | High-thermal-conductivity phase-change organic silicon rubber and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6391442B1 (en) * | 1999-07-08 | 2002-05-21 | Saint-Gobain Performance Plastics Corporation | Phase change thermal interface material |
| CN1539901A (en) * | 2003-04-24 | 2004-10-27 | 忠山仪器有限公司 | Combination of heat conducting materials softend at low temperature, preparation method and application |
-
2006
- 2006-11-09 CN CNB2006101181584A patent/CN100491490C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6391442B1 (en) * | 1999-07-08 | 2002-05-21 | Saint-Gobain Performance Plastics Corporation | Phase change thermal interface material |
| CN1539901A (en) * | 2003-04-24 | 2004-10-27 | 忠山仪器有限公司 | Combination of heat conducting materials softend at low temperature, preparation method and application |
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| CN1962799A (en) | 2007-05-16 |
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