CN104140678A - Self-adhesive heat-conducting silicone grease and preparation method thereof - Google Patents
Self-adhesive heat-conducting silicone grease and preparation method thereof Download PDFInfo
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- CN104140678A CN104140678A CN201410305597.0A CN201410305597A CN104140678A CN 104140678 A CN104140678 A CN 104140678A CN 201410305597 A CN201410305597 A CN 201410305597A CN 104140678 A CN104140678 A CN 104140678A
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Abstract
The invention belongs to the field of heat-conducting silicone greases, and discloses self-adhesive heat-conducting silicone grease and a preparation method of the self-adhesive heat-conducting silicone grease. The heat-conducting silicone grease consists of the following components in parts by weight: 20-50 parts of a component A, 0.8-5 parts of a component B, 0.1-0.5 part of a catalyst, 60-120 parts of a heat-conducting filling material and 0.1-0.5 part of an inhibitor. The preparation method comprises the following steps: weighing the component A, the component B, the catalyst, the heat-conducting filling material and the inhibitor according to the weight parts of a formula, putting into a stirring kettle, and uniformly stirring at a high speed until flowing paste is obtained; then performing grinding and dispersion treatment on the flowing paste on a high-speed colloid grinder, and then slowly and finely grinding the paste on a three-roll grinder; finally performing vacuum pumping treatment to obtain the self-adhesive heat-conducting silicone grease. The heat-conducting silicone grease disclosed by the invention has high heat-conducting performance and good utilization and weather-resistant performance, and has the advantages of good self-adhesion, low diffusion rate, good rework performance, easiness in construction, and the like.
Description
Technical field
The invention belongs to heat-conducting silicone grease field, be specifically related to a kind of heat-conducting silicone grease with autohension and preparation method thereof.
Background technology
Along with scientific and technological development, electronic product trends towards densification, microminiaturization and densification, and on circuit card, the integrated level of components and parts is more and more higher, along with the requirement also having improved heat dispersion, has developed thus many heat dissipation technologys and heat sink material.
Heat-conducting silicone grease is commonly called as thermal grease, generally taking organic silicone as main raw material, add the organosilicon smectic mixture that material heat-resisting, that heat conductivility is excellent is made, can be used for heat conduction and the heat radiation of the electronic devices and components such as power amplifier, transistor, electron tube, CPU, thereby the electric property of guarantee electronic instrument and meter etc. is stable.
About the existing more report of development of heat-conducting silicone grease, on market, also have some products on sale, but some shortcomings of ubiquity are as short in the two-pack heat-conducting silicone grease crosslinking curing time, must on-the-spot preparation use; Single component heat-conducting silicone grease viscosity is low, diffusivity is large, has trickling, base-material easily occurs and separate with heat conductive filler, causes the efflorescence fragmentation of heat-conducting silicone grease coating and thermal conductivity variation; Adopt full-bodied base-material to be difficult to add the heat conductive filler of high solids content, product heat conductivility is poor; Heat-conducting silicone grease autohension is low, doing over again property is poor, is not easy to repeat the sticky maintenance of getting.
Summary of the invention
For the shortcoming that overcomes prior art is with not enough, primary and foremost purpose of the present invention is to provide a kind of heat-conducting silicone grease with autohension, described in there is autohension heat-conducting silicone grease there is autohension, thermal conductivity is good, and diffusivity is low, can not occur from trickling;
Another object of the present invention is to provide the preparation method of the above-mentioned heat-conducting silicone grease with autohension.
Object of the present invention is achieved through the following technical solutions:
Have a heat-conducting silicone grease for autohension, its composition of raw materials is made up of the each component of following parts by weight:
The structural formula of said components A is as shown in logical formula I:
In above-mentioned logical formula I, m=250～280, n=3～5;
The structural formula of said components B is as shown in general formula (II):
In above-mentioned general formula (II), p=10～15, q=20～30.
Preferably, described catalyzer is platinum catalyst; Preferred, described platinum catalyst is Karst platinum catalyst;
Preferably, the thermal conductivity value of described heat conductive filler is 30～300W/mK, and particle diameter is 8～40um.
Preferably, described heat conductive filler is more than one in aluminum oxide, titanium oxide, magnesium oxide, zinc oxide, boron nitride, aluminium nitride or silicon nitride.
Preferably, described inhibitor is methylbutynol or vinyl ring body.
The preparation method of the above-mentioned heat-conducting silicone grease with autohension, comprises the steps: that taking component A, B component, catalyzer, heat conductive filler and inhibitor by formulation weight part is placed in stirring tank, and high-speed stirring is evenly to obtaining mobility lotion; Then by the grinding distribution processing on colloid mills of gained mobility lotion, then on three-roll grinder slow porphyrize mill; Finally vacuumize processing, described in obtaining, there is the heat-conducting silicone grease of autohension.
Preferably, the speed of described high-speed stirring is 1000～5000rpm;
Preferably, the number of times of described grinding distribution processing is 1～3 time;
Preferably, the number of times of described slow porphyrize mill is 1～3 time;
Preferably, the vacuum tightness that vacuumizes processing described in is-0.095MPa.
The present invention has following advantage and effect with respect to prior art: the heat-conducting silicone grease with autohension of the present invention, by screening and the dosage optimization of each component in formula, products obtained therefrom has high thermal conductivity and good use weather resistance, and has that autohension is good, diffusivity is low, heavy industry good and construct the advantage such as easy.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
Have a heat-conducting silicone grease for autohension, its composition of raw materials is made up of the each component of following parts by weight
:
The structural formula of said components A is as shown in logical formula I:
In above-mentioned logical formula I, m=250, n=3;
The structural formula of B component is as shown in general formula (II):
In above-mentioned general formula (II), p=10, q=30.
Wherein, described catalyzer is Karst platinum catalyst;
The thermal conductivity value of described heat conductive filler is 37W/mK, and particle diameter is 8～20nm;
Described heat conductive filler is aluminum oxide;
Described inhibitor is methylbutynol.
The preparation method of the above-mentioned heat-conducting silicone grease with autohension, comprises the steps: that taking component A, B component, catalyzer, heat conductive filler and inhibitor by formulation weight part is placed in stirring tank, and high-speed stirring is evenly to obtaining mobility lotion; Then by the grinding distribution processing on colloid mills of gained mobility lotion, then on three-roll grinder slow porphyrize mill; Finally vacuumize processing, described in obtaining, there is the heat-conducting silicone grease of autohension.
Wherein, the speed of described high-speed stirring is 1000rpm;
The number of times of described grinding distribution processing is 1 time;
The number of times of described slow porphyrize mill is 3 times;
The described vacuum tightness that vacuumizes processing is-0.095Mpa.
Embodiment 2
Have a heat-conducting silicone grease for autohension, its composition of raw materials is made up of the each component of following parts by weight:
The structural formula of said components A is as shown in logical formula I:
In above-mentioned logical formula I, m=260, n=4;
The structural formula of B component is as shown in general formula (II):
In above-mentioned general formula (II), p=15, q=25.
Wherein, described catalyzer is Karst platinum catalyst;
The thermal conductivity value of described heat conductive filler is 125W/mK, and particle diameter is 8～20nm;
Described heat conductive filler is boron nitride;
Described inhibitor is vinyl ring body.
The preparation method of the above-mentioned heat-conducting silicone grease with autohension, comprises the steps: that taking component A, B component, catalyzer, heat conductive filler and inhibitor by formulation weight part is placed in stirring tank, and high-speed stirring is evenly to obtaining mobility lotion; Then by the grinding distribution processing on colloid mills of gained mobility lotion, then on three-roll grinder slow porphyrize mill; Finally vacuumize processing, described in obtaining, there is the heat-conducting silicone grease of autohension.
Wherein, the speed of described high-speed stirring is 5000rpm;
The number of times of described grinding distribution processing is 2 times;
The number of times of described slow porphyrize mill is 1 time;
The described vacuum tightness that vacuumizes processing is-0.095Mpa.
Embodiment 3
Have a heat-conducting silicone grease for autohension, its composition of raw materials is made up of the each component of following parts by weight:
The structural formula of said components A is as shown in logical formula I:
In above-mentioned logical formula I, m=280, n=5;
The structural formula of B component is as shown in general formula (II):
In above-mentioned general formula (II), p=10, q=25.
Wherein, described catalyzer is platinum catalyst;
The thermal conductivity value of described heat conductive filler is 270W/mK, and particle diameter is 8～15um;
Described heat conductive filler is aluminium nitride;
Described inhibitor is vinyl ring body.
The preparation method of the above-mentioned heat-conducting silicone grease with autohension, comprises the steps: that taking component A, B component, catalyzer, heat conductive filler and inhibitor by formulation weight part is placed in stirring tank, and high-speed stirring is evenly to obtaining mobility lotion; Then by the grinding distribution processing on colloid mills of gained mobility lotion, then on three-roll grinder slow porphyrize mill; Finally vacuumize processing, described in obtaining, there is the heat-conducting silicone grease of autohension.
Wherein, the speed of described high-speed stirring is 2500rpm;
The number of times of described grinding distribution processing is 3 times;
The number of times of described slow porphyrize mill is 1 time;
The described vacuum tightness that vacuumizes processing is-0.095Mpa.
Embodiment 4
Have a heat-conducting silicone grease for autohension, its composition of raw materials is made up of the each component of following parts by weight:
The structural formula of said components A is as shown in logical formula I:
In above-mentioned logical formula I, m=260, n=4;
The structural formula of B component is as shown in general formula (II):
In above-mentioned general formula (II), p=15, q=30.
Wherein, described catalyzer is platinum catalyst;
The thermal conductivity value of described heat conductive filler is 300W/mK, and particle diameter is 20～40um;
Described heat conductive filler is silicon nitride;
Described inhibitor is vinyl ring body.
The preparation method of the above-mentioned heat-conducting silicone grease with autohension, comprises the steps: that taking component A, B component, catalyzer, heat conductive filler and inhibitor by formulation weight part is placed in stirring tank, and high-speed stirring is evenly to obtaining mobility lotion; Then by the grinding distribution processing on colloid mills of gained mobility lotion, then on three-roll grinder slow porphyrize mill; Finally vacuumize processing, described in obtaining, there is the heat-conducting silicone grease of autohension.
Wherein, the speed of described high-speed stirring is 2800rpm;
The number of times of described grinding distribution processing is 2 times;
The number of times of described slow porphyrize mill is 2 times;
The described vacuum tightness that vacuumizes processing is-0.095Mpa.
Performance test:
The heat-conducting silicone grease with autohension of embodiment 1～4 gained is carried out to performance test, and performance test comprises following content: viscosity, thermal conductivity, thermal resistance and resistance toheat.
Viscosity: the heat-conducting silicone grease with autohension of embodiment 1～4 gained is measured to viscosity with rotational viscosimeter under the rotating speed of 2rpm, and result is as shown in table 1;
Thermal conductivity: the heat-conducting silicone grease with autohension of embodiment 1～4 gained is smeared on the testing stand of thermal conductance tester, and gauge control is 2mm, the heat conductivity value of mensuration viscosity silicone grease, result is as shown in table 1;
Thermal resistance: the heat-conducting silicone grease with autohension of embodiment 1～4 gained is smeared on the testing stand of thermal resistance instrument, and gauge control is 2mm, the heat conductivity value of mensuration viscosity silicone grease, result is as shown in table 1;
Resistance toheat: resistance toheat determination test comprises weathering test and cold shock testing.Weathering test is that the heat-conducting silicone grease with autohension of embodiment 1～4 gained is toasted 24 hours under 150 DEG C of high temperature; Cold shock testing is-50 DEG C～120 DEG C circulations 100 times by the heat-conducting silicone grease with autohension of embodiment 1～4 gained.Weathering test and cold shock testing result are as shown in table 1.
The table 1. heat-conducting silicone grease testing experiment result with autohension of the present invention
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Viscosity (Pas) | 254 | 320 | 300 | 335 |
| Thermal conductivity (W/mK) | 1.2 | 1.5 | 2.0 | 2.9 |
| Thermal resistance (mm 2·K/W) | 1.67 | 1.33 | 1.0 | 1.0 |
| Aging rear thermal resistance (mm 2·K/W) | 1.55 | 1.26 | 0.97 | 0.81 |
| Thermal resistance (mm after thermal shock 2·K/W) | 1.47 | 1.18 | 0.95 | 0.79 |
As shown in Table 1, the heat conductivity of heat-conduction silicone grease excellence with autohension of the present invention, conservation rate is good; And there is good autohension, can repeat sticky getting, convenient installation and maintenance.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. there is a heat-conducting silicone grease for autohension, described in it is characterized in that, have that the composition of raw materials of the heat-conducting silicone grease of autohension is made up of the each component of following parts by weight:
The structural formula of said components A is as shown in logical formula I:
In above-mentioned logical formula I, m=250～280, n=3～5;
The structural formula of said components B is as shown in general formula (II):
In above-mentioned general formula (II), p=10～15, q=20～30.
2. a kind of heat-conducting silicone grease with autohension according to claim 1, is characterized in that: described catalyzer is platinum catalyst.
3. a kind of heat-conducting silicone grease with autohension according to claim 1, is characterized in that: the thermal conductivity value of described heat conductive filler is 30～300W/mK, particle diameter is 8～40um.
4. a kind of heat-conducting silicone grease with autohension according to claim 1, is characterized in that: described heat conductive filler is more than one in aluminum oxide, titanium oxide, magnesium oxide, zinc oxide, boron nitride, aluminium nitride or silicon nitride.
5. a kind of heat-conducting silicone grease with autohension according to claim 1, is characterized in that: described inhibitor is methylbutynol or vinyl ring body.
6. according to the preparation method of the heat-conducting silicone grease with autohension described in claim 1～5 any one, it is characterized in that comprising the steps: that taking component A, B component, catalyzer, heat conductive filler and inhibitor by formulation weight part is placed in stirring tank, high-speed stirring is evenly to obtaining mobility lotion; Then by the grinding distribution processing on colloid mills of gained mobility lotion, then on three-roll grinder slow porphyrize mill; Finally vacuumize processing, described in obtaining, there is the heat-conducting silicone grease of autohension.
7. the preparation method of the heat-conducting silicone grease with autohension according to claim 6, is characterized in that: the speed of described high-speed stirring is 1000～5000rpm.
8. the preparation method of the heat-conducting silicone grease with autohension according to claim 6, is characterized in that: the number of times of described grinding distribution processing is 1～3 time.
9. the preparation method of the heat-conducting silicone grease with autohension according to claim 6, is characterized in that: the number of times of described slow porphyrize mill is 1～3 time.
10. the preparation method of the heat-conducting silicone grease with autohension according to claim 6, is characterized in that: described in vacuumize processing vacuum tightness be-0.095MPa.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105315958A (en) * | 2015-10-28 | 2016-02-10 | 苏州天脉导热科技有限公司 | Addition heat-conducting self-adhesive silicone rubber and preparation method thereof |
| CN106590550A (en) * | 2016-12-15 | 2017-04-26 | 深圳德邦界面材料有限公司 | Heat conduction silicone grease and preparation method thereof |
| US10174433B2 (en) | 2013-12-05 | 2019-01-08 | Honeywell International Inc. | Stannous methanesulfonate solution with adjusted pH |
| US10287471B2 (en) | 2014-12-05 | 2019-05-14 | Honeywell International Inc. | High performance thermal interface materials with low thermal impedance |
| US10312177B2 (en) | 2015-11-17 | 2019-06-04 | Honeywell International Inc. | Thermal interface materials including a coloring agent |
| US10428256B2 (en) | 2017-10-23 | 2019-10-01 | Honeywell International Inc. | Releasable thermal gel |
| US10428257B2 (en) | 2014-07-07 | 2019-10-01 | Honeywell International Inc. | Thermal interface material with ion scavenger |
| US10501671B2 (en) | 2016-07-26 | 2019-12-10 | Honeywell International Inc. | Gel-type thermal interface material |
| CN110724381A (en) * | 2019-09-25 | 2020-01-24 | 无锡易佳美电子科技有限公司 | Preparation method of heat conduction grease capable of preventing pumping in cold and hot impact environment |
| US10781349B2 (en) | 2016-03-08 | 2020-09-22 | Honeywell International Inc. | Thermal interface material including crosslinker and multiple fillers |
| CN111849169A (en) * | 2020-07-14 | 2020-10-30 | 广东乐普泰新材料科技有限公司 | Heat-conducting silicone grease and preparation method thereof |
| US11041103B2 (en) | 2017-09-08 | 2021-06-22 | Honeywell International Inc. | Silicone-free thermal gel |
| US11072706B2 (en) | 2018-02-15 | 2021-07-27 | Honeywell International Inc. | Gel-type thermal interface material |
| CN113801640A (en) * | 2021-09-24 | 2021-12-17 | 合肥联宝信息技术有限公司 | Wave-absorbing heat-conducting shielding composition and preparation method thereof |
| US11373921B2 (en) | 2019-04-23 | 2022-06-28 | Honeywell International Inc. | Gel-type thermal interface material with low pre-curing viscosity and elastic properties post-curing |
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| US10174433B2 (en) | 2013-12-05 | 2019-01-08 | Honeywell International Inc. | Stannous methanesulfonate solution with adjusted pH |
| US10428257B2 (en) | 2014-07-07 | 2019-10-01 | Honeywell International Inc. | Thermal interface material with ion scavenger |
| US10287471B2 (en) | 2014-12-05 | 2019-05-14 | Honeywell International Inc. | High performance thermal interface materials with low thermal impedance |
| CN105315958A (en) * | 2015-10-28 | 2016-02-10 | 苏州天脉导热科技有限公司 | Addition heat-conducting self-adhesive silicone rubber and preparation method thereof |
| US10312177B2 (en) | 2015-11-17 | 2019-06-04 | Honeywell International Inc. | Thermal interface materials including a coloring agent |
| US10781349B2 (en) | 2016-03-08 | 2020-09-22 | Honeywell International Inc. | Thermal interface material including crosslinker and multiple fillers |
| US10501671B2 (en) | 2016-07-26 | 2019-12-10 | Honeywell International Inc. | Gel-type thermal interface material |
| CN106590550A (en) * | 2016-12-15 | 2017-04-26 | 深圳德邦界面材料有限公司 | Heat conduction silicone grease and preparation method thereof |
| US11041103B2 (en) | 2017-09-08 | 2021-06-22 | Honeywell International Inc. | Silicone-free thermal gel |
| US10428256B2 (en) | 2017-10-23 | 2019-10-01 | Honeywell International Inc. | Releasable thermal gel |
| US11072706B2 (en) | 2018-02-15 | 2021-07-27 | Honeywell International Inc. | Gel-type thermal interface material |
| US11373921B2 (en) | 2019-04-23 | 2022-06-28 | Honeywell International Inc. | Gel-type thermal interface material with low pre-curing viscosity and elastic properties post-curing |
| CN110724381A (en) * | 2019-09-25 | 2020-01-24 | 无锡易佳美电子科技有限公司 | Preparation method of heat conduction grease capable of preventing pumping in cold and hot impact environment |
| CN111849169A (en) * | 2020-07-14 | 2020-10-30 | 广东乐普泰新材料科技有限公司 | Heat-conducting silicone grease and preparation method thereof |
| CN111849169B (en) * | 2020-07-14 | 2023-02-17 | 广东乐普泰新材料科技有限公司 | Heat-conducting silicone grease and preparation method thereof |
| CN113801640A (en) * | 2021-09-24 | 2021-12-17 | 合肥联宝信息技术有限公司 | Wave-absorbing heat-conducting shielding composition and preparation method thereof |
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