CN107629458A - A kind of preparation method of high heat conduction composite heat interfacial material - Google Patents
A kind of preparation method of high heat conduction composite heat interfacial material Download PDFInfo
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Abstract
The invention provides a kind of preparation method of high heat conduction composite heat interfacial material.Preparation method is as follows：（1）Prepare modified boron nitride crystal whisker；（2）Silicon rubber is dissolved with tetrahydrofuran, prepares silicone rubber solution, it is rear to add vulcanizing agent and modified boron nitride, coating silicon rubber slurry is made；（3）Glass fabric is subjected to surface modification；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry, taken out, treats that tetrahydrofuran volatilizees, impregnates again, volatilize, it is repeated multiple times, then composite is vulcanized, you can.The high heat conduction composite heat interfacial material of the present invention has very high thermal conductivity and higher heat resisting temperature.
Description
Technical field
The present invention relates to thermal interfacial material field, and in particular to a kind of preparation method of high heat conduction composite heat interfacial material.
Background technology
With science and technology rapid development, high-power component to miniaturization, lightweight, compact-sizedization, run high efficiency side
To development, while it have also appeared the efficiency light electronics device of the high power densities such as large-power light-emitting diodes LED, laser diode LD
Part, in order to ensure the steady-state operation of device and system, it is necessary to which heat is exported in time, to the quality of heat sink material, thermal conductivity, strong
Degree, stability and thermal management technology propose higher requirement.The miniaturization of integrated circuit (IC) packing chip, makes its function
Become more and more stronger.Compared with former IC chip, the integrated chip produced under this trend is very intensive, and
And more functions can be performed in preset time, so as to the electric current increase for causing it to use.The fast chip of small volume, the speed of service
It is more than former product heat during work.In electronic technology field, due to the integrated level more and more higher of electronic circuit, heat gathers
Product is more and more.Gathering for heat causes device temperature to raise, and job stability and reliability reduce.It is public according to Arhelmins
Formula, temperature often raise 10 DEG C, processor service life reduction half.Therefore, the material requirements for processor has high thermal conductivity,
So that heat transfers out rapidly, reach cooling purpose.But the heat conduction using boron nitride as the Heat Conduction Material of heat-conducting filler at present
Coefficient is still relatively low, does not reach the cooling requirements of some components, while heat resistance is poor.
The content of the invention
Technical problems to be solved：It is an object of the invention to provide a kind of preparation side of high heat conduction composite heat interfacial material
Method, the thermal interfacial material being prepared have very high thermal conductivity factor and higher heat resistance.
Technical scheme：A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：
（1）Boric acid is added after 70 DEG C being warming up to water bath with thermostatic control distilled water, and is stirred continuously and is allowed to be completely dissolved, water is heated up
Melamine is added after to 95 DEG C, stirs 30min, naturally cools to after being stored at room temperature 20h and separates out the washing of white fibrous crystal
Dry, then in Muffle furnace 550 DEG C calcined, then made annealing treatment at 700 DEG C, finally in a nitrogen atmosphere,
1750 DEG C of progress nitridation reactions, are made boron nitride crystal whisker, then by boron nitride with being dissolved in containing 15-28wt% silane couplers
KH570 ethanol solution, ultrasonic disperse 20min, it is placed in 60 DEG C of stirred in water bath and is volatilized completely to solvent, then at 100 DEG C
After lower drying 12-20h, 2h is dried at 140 DEG C；
（2）Silicon rubber is dissolved with tetrahydrofuran, wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, prepare silicon rubber
Solution, rear 2,5- dimethyl -2, the 5- bis(t-butylperoxy) hexanes for adding 1.5-3.2wt%, 15- is added after well mixed
30wt% is modified boron nitride, adds after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；
（3）Glass fabric is dried with distillation water washing, adds in weight complex acid potassium and the concentrated sulfuric acid after stirring 15min, adds double
Oxygen water removes unreacted heavy complex acid potassium, washs drying, then it is 45- glass fibre to be placed in the absolute ethyl alcohol of acidifying in temperature
0.5-2h is soaked at 55 DEG C, polydimethylhydroxysiloxane, absolute ethyl alcohol, distilled water, Tween 80 are configured to emulsion, instillation contains
Have in glass fibers fiber cloth absolute ethyl alcohol acid solution, 60-80 DEG C of reaction 1.5-3h of keeping temperature, product is washed with ethanol and dried i.e.
Can；
（4）Glass fabric after surface treatment is immersed in silicon rubber slurry, taken out, treats that tetrahydrofuran volatilizees, soaks again
Stain, volatilization, 5-10 times repeatedly, is then vulcanized composite, and curing temperature is 170 DEG C, time 2-8min, you can.
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, it is characterised in that：The step
（1）The mass ratio of mesoboric acid and melamine is 1:0.5-4, the dosage of silane coupler are 18-25wt%, the drying at 100 DEG C
Time is 15h.
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, the step（2）In 2,5- bis-
The dosage of methyl -2,5- bis(t-butylperoxy) hexane is 2.4wt%, and the dosage of modified boron nitride is 19-25wt%
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, the step（3）Middle acidifying it is anhydrous
The pH of ethanol solution is 2-3.
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, the step（3）In poly- diformazan
Base hydrosiloxane, absolute ethyl alcohol, the mass ratio of distilled water are 1-4:8:4, the 2- for mixed solution mass fraction of Tween 80
3wt%。
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, the step（3）Middle glass fibers
Dimension is placed in the absolute ethyl alcohol of acidifying soaks 1-1.5h in the case where temperature is 50-55 DEG C.
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, the step（3）Middle glass fibers
Reaction temperatures of the Wei Bu in absolute ethyl alcohol acid solution is 65-75 DEG C, reaction time 2h.
Further, the preparation method of described a kind of high heat conduction composite heat interfacial material, the step（4）Cure time
For 5min.
Beneficial effect：The high heat conduction composite heat interfacial material of the present invention has higher thermal conductivity, by the nitridation of addition
Aluminium is prepared into whisker and carries out that surface is modified, and thermal conductivity and resistance to heat rating improve a lot, while again by glass fabric
Its resistance to heat rating is also improved after being modified, the compound interface material is adapted in the range of -40 ~ 225 DEG C
Use.
Embodiment
Embodiment 1
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）Water bath with thermostatic control distilled water will be used to heat up
Boric acid is added after to 70 DEG C, and is stirred continuously and is allowed to be completely dissolved, water is warming up to after 95 DEG C and adds melamine, is stirred
30min, naturally cools to be stored at room temperature after 20h and separates out the washing drying of white fibrous crystal, then in Muffle furnace 550 DEG C enter
Row calcining, is then made annealing treatment at 700 DEG C, in a nitrogen atmosphere, 1750 DEG C of progress nitridation reactions, boron nitride is made finally
Whisker, then boron nitride ultrasonic disperse 20min, is placed in the ethanol solution containing 15wt% silane couplers KH570 is dissolved in
60 DEG C of stirred in water bath is volatilized completely to solvent, and after then drying 12h at 100 DEG C, 2h is dried at 140 DEG C；（2）By silicon
Rubber is dissolved with tetrahydrofuran, and wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, silicone rubber solution is prepared, it is rear to add
1.5wt% 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes, add 30wt% after being well mixed and be modified boron nitride, add
Enter after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；（3）Glass fabric is dried with distillation water washing, added
Enter after stirring 15min in weight complex acid potassium and the concentrated sulfuric acid, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then will
Glass fibre is placed in the absolute ethyl alcohol of acidifying soaks 2h in the case where temperature is 45 DEG C, by polydimethylhydroxysiloxane, anhydrous second
Alcohol, distilled water, Tween 80 are configured to emulsion, instill and contain in glass fibers fiber cloth absolute ethyl alcohol acid solution, 60 DEG C of keeping temperature
3h is reacted, product is washed with ethanol and dried；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry,
Take out, treat that tetrahydrofuran volatilizees, impregnate again, volatilize, 5 times repeatedly, then vulcanized composite, curing temperature is
170 DEG C, time 2min, you can.
Embodiment 2
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）Water bath with thermostatic control distilled water will be used to heat up
Boric acid is added after to 70 DEG C, and is stirred continuously and is allowed to be completely dissolved, water is warming up to after 95 DEG C and adds melamine, is stirred
30min, naturally cools to be stored at room temperature after 20h and separates out the washing drying of white fibrous crystal, then in Muffle furnace 550 DEG C enter
Row calcining, is then made annealing treatment at 700 DEG C, in a nitrogen atmosphere, 1750 DEG C of progress nitridation reactions, boron nitride is made finally
Whisker, then boron nitride ultrasonic disperse 20min, is placed in the ethanol solution containing 28wt% silane couplers KH570 is dissolved in
60 DEG C of stirred in water bath is volatilized completely to solvent, and after then drying 20h at 100 DEG C, 2h is dried at 140 DEG C；（2）By silicon
Rubber is dissolved with tetrahydrofuran, and wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, silicone rubber solution is prepared, it is rear to add
3.2wt% 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes, add 15wt% after being well mixed and be modified boron nitride, add
Enter after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；（3）Glass fabric is dried with distillation water washing, added
Enter after stirring 15min in weight complex acid potassium and the concentrated sulfuric acid, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then will
Glass fibre is placed in the absolute ethyl alcohol of acidifying be 55 DEG C in temperature at soaks 0.5h, by polydimethylhydroxysiloxane, anhydrous
Ethanol, distilled water, Tween 80 are configured to emulsion, instill and contain in glass fibers fiber cloth absolute ethyl alcohol acid solution, keeping temperature 80
DEG C reaction 1.5h, product with ethanol wash drying；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry
In, take out, treat that tetrahydrofuran volatilizees, impregnate again, volatilize, 10 times repeatedly, then vulcanized composite, curing temperature
For 170 DEG C, time 8min, you can.
Embodiment 3
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）Water bath with thermostatic control distilled water will be used to heat up
Boric acid is added after to 70 DEG C, and is stirred continuously and is allowed to be completely dissolved, water is warming up to after 95 DEG C and adds melamine, is stirred
30min, naturally cools to be stored at room temperature after 20h and separates out the washing drying of white fibrous crystal, then in Muffle furnace 550 DEG C enter
Row calcining, is then made annealing treatment at 700 DEG C, in a nitrogen atmosphere, 1750 DEG C of progress nitridation reactions, boron nitride is made finally
Whisker, then boron nitride ultrasonic disperse 20min, is placed in the ethanol solution containing 18wt% silane couplers KH570 is dissolved in
60 DEG C of stirred in water bath is volatilized completely to solvent, and after then drying 15h at 100 DEG C, 2h is dried at 140 DEG C；（2）By silicon
Rubber is dissolved with tetrahydrofuran, and wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, silicone rubber solution is prepared, it is rear to add
2.4wt% 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes, add 25wt% after being well mixed and be modified boron nitride, add
Enter after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；（3）Glass fabric is dried with distillation water washing, added
Enter after stirring 15min in weight complex acid potassium and the concentrated sulfuric acid, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then will
Glass fibre is placed in the absolute ethyl alcohol of acidifying be 50 DEG C in temperature at soaks 1.5h, by polydimethylhydroxysiloxane, anhydrous
Ethanol, distilled water, Tween 80 are configured to emulsion, instill and contain in glass fibers fiber cloth absolute ethyl alcohol acid solution, keeping temperature 65
DEG C reaction 2h, product with ethanol wash drying；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry
In, take out, treat that tetrahydrofuran volatilizees, impregnate again, volatilize, 5 times repeatedly, then vulcanized composite, curing temperature
For 170 DEG C, time 5min, you can.
Embodiment 4
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）Water bath with thermostatic control distilled water will be used to heat up
Boric acid is added after to 70 DEG C, and is stirred continuously and is allowed to be completely dissolved, water is warming up to after 95 DEG C and adds melamine, is stirred
30min, naturally cools to be stored at room temperature after 20h and separates out the washing drying of white fibrous crystal, then in Muffle furnace 550 DEG C enter
Row calcining, is then made annealing treatment at 700 DEG C, in a nitrogen atmosphere, 1750 DEG C of progress nitridation reactions, boron nitride is made finally
Whisker, then boron nitride ultrasonic disperse 20min, is placed in the ethanol solution containing 25wt% silane couplers KH570 is dissolved in
60 DEG C of stirred in water bath is volatilized completely to solvent, and after then drying 15h at 100 DEG C, 2h is dried at 140 DEG C；（2）By silicon
Rubber is dissolved with tetrahydrofuran, and wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, silicone rubber solution is prepared, it is rear to add
2.4wt% 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes, add 19wt% after being well mixed and be modified boron nitride, add
Enter after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；（3）Glass fabric is dried with distillation water washing, added
Enter after stirring 15min in weight complex acid potassium and the concentrated sulfuric acid, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then will
Glass fibre is placed in the absolute ethyl alcohol of acidifying soaks 1h in the case where temperature is 55 DEG C, by polydimethylhydroxysiloxane, anhydrous second
Alcohol, distilled water, Tween 80 are configured to emulsion, instill and contain in glass fibers fiber cloth absolute ethyl alcohol acid solution, 75 DEG C of keeping temperature
2h is reacted, product is washed with ethanol and dried；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry,
Take out, treat that tetrahydrofuran volatilizees, impregnate again, volatilize, 10 times repeatedly, then vulcanized composite, curing temperature is
170 DEG C, time 5min, you can.
Embodiment 5
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）Water bath with thermostatic control distilled water will be used to heat up
Boric acid is added after to 70 DEG C, and is stirred continuously and is allowed to be completely dissolved, water is warming up to after 95 DEG C and adds melamine, is stirred
30min, naturally cools to be stored at room temperature after 20h and separates out the washing drying of white fibrous crystal, then in Muffle furnace 550 DEG C enter
Row calcining, is then made annealing treatment at 700 DEG C, in a nitrogen atmosphere, 1750 DEG C of progress nitridation reactions, boron nitride is made finally
Whisker, then boron nitride ultrasonic disperse 20min, is placed in the ethanol solution containing 22wt% silane couplers KH570 is dissolved in
60 DEG C of stirred in water bath is volatilized completely to solvent, and after then drying 15h at 100 DEG C, 2h is dried at 140 DEG C；（2）By silicon
Rubber is dissolved with tetrahydrofuran, and wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, silicone rubber solution is prepared, it is rear to add
2.4wt% 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes, add 23wt% after being well mixed and be modified boron nitride, add
Enter after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；（3）Glass fabric is dried with distillation water washing, added
Enter after stirring 15min in weight complex acid potassium and the concentrated sulfuric acid, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then will
Glass fibre is placed in the absolute ethyl alcohol of acidifying be 55 DEG C in temperature at soaks 1.2h, by polydimethylhydroxysiloxane, anhydrous
Ethanol, distilled water, Tween 80 are configured to emulsion, instill and contain in glass fibers fiber cloth absolute ethyl alcohol acid solution, keeping temperature 70
DEG C reaction 2h, product with ethanol wash drying；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry
In, take out, treat that tetrahydrofuran volatilizees, impregnate again, volatilize, 7 times repeatedly, then vulcanized composite, curing temperature
For 170 DEG C, time 5min, you can.
Comparative example 1
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）By boron nitride be dissolved in containing
15wt% silane couplers KH570 ethanol solution, ultrasonic disperse 20min, it is placed in 60 DEG C of stirred in water bath and is waved completely to solvent
Hair, after then drying 12h at 100 DEG C, 2h is dried at 140 DEG C；（2）Silicon rubber is dissolved with tetrahydrofuran, wherein silicon rubber
The mass ratio of glue and tetrahydrofuran is 30:70, prepare silicone rubber solution, the rear double (uncles of 2,5- dimethyl -2,5- for adding 1.5wt%
Butyl peroxy) hexane, add 30wt% after being well mixed and be modified boron nitride, add after ultrasonic disperse 15min, that is, be made and apply
Cloth silicon rubber slurry；（3）Glass fabric is dried with distillation water washing, adds in weight complex acid potassium and the concentrated sulfuric acid and stirs
After 15min, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then glass fibre is placed in the anhydrous second of acidifying
2h is soaked at being 45 DEG C in temperature in alcohol, polydimethylhydroxysiloxane, absolute ethyl alcohol, distilled water, Tween 80 are configured to breast
Liquid, instill and contain in glass fibers fiber cloth absolute ethyl alcohol acid solution, 60 DEG C of reaction 3h of keeping temperature, product washs drying with ethanol
；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry, taken out, treats that tetrahydrofuran volatilizees, soaks again
Stain, volatilization, 5 times repeatedly, is then vulcanized composite, and curing temperature is 170 DEG C, time 2min, you can.
Comparative example 2
A kind of preparation method of high heat conduction composite heat interfacial material, comprises the following steps：（1）Water bath with thermostatic control distilled water will be used to heat up
Boric acid is added after to 70 DEG C, and is stirred continuously and is allowed to be completely dissolved, water is warming up to after 95 DEG C and adds melamine, is stirred
30min, naturally cools to be stored at room temperature after 20h and separates out the washing drying of white fibrous crystal, then in Muffle furnace 550 DEG C enter
Row calcining, is then made annealing treatment at 700 DEG C, in a nitrogen atmosphere, 1750 DEG C of progress nitridation reactions, boron nitride is made finally
Whisker, then boron nitride ultrasonic disperse 20min, is placed in the ethanol solution containing 28wt% silane couplers KH570 is dissolved in
60 DEG C of stirred in water bath is volatilized completely to solvent, and after then drying 20h at 100 DEG C, 2h is dried at 140 DEG C；（2）By silicon
Rubber is dissolved with tetrahydrofuran, and wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, silicone rubber solution is prepared, it is rear to add
3.2wt% 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes, add 15wt% after being well mixed and be modified boron nitride, add
Enter after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；（3）Glass fabric is dried with distillation water washing, added
Enter after stirring 15min in weight complex acid potassium and the concentrated sulfuric acid, add hydrogen peroxide and remove unreacted heavy complex acid potassium, wash drying, then will
Glass fibre is placed in the absolute ethyl alcohol of acidifying soaks 0.5h in the case where temperature is 55 DEG C, is by glass fibre addition KH550 contents
2wt% ethanol solution, stir 4min, drying；（4）Glass fabric after surface treatment is immersed in silicon rubber slurry
In, take out, treat that tetrahydrofuran volatilizees, impregnate again, volatilize, 10 times repeatedly, then vulcanized composite, curing temperature
For 170 DEG C, time 8min, you can.
The property indices of material of the present invention see the table below, it may be seen that this high heat conduction composite heat interfacial material has
Higher thermal conductivity, the aluminium nitride of addition is being prepared into whisker and is carrying out that surface is modified, and thermal conductivity and resistance to heat rating have very
Big raising, while its resistance to heat rating is also improved after glass fabric is modified again, the compound interface
Material is adapted to use in the range of -40 ~ 225 DEG C.
The property indices of the high heat conduction composite heat interfacial material of table 1
。
Claims (7)
1. a kind of preparation method of high heat conduction composite heat interfacial material, it is characterised in that comprise the following steps：
（1）Boric acid is added after 70 DEG C being warming up to water bath with thermostatic control distilled water, and is stirred continuously and is allowed to be completely dissolved, water is heated up
Melamine is added after to 95 DEG C, stirs 30min, naturally cools to after being stored at room temperature 20h and separates out the washing of white fibrous crystal
Dry, then in Muffle furnace 550 DEG C calcined, then made annealing treatment at 700 DEG C, finally in a nitrogen atmosphere,
1750 DEG C of progress nitridation reactions, are made boron nitride crystal whisker, then by boron nitride with being dissolved in containing 15-28wt% silane couplers
KH570 ethanol solution, ultrasonic disperse 20min, it is placed in 60 DEG C of stirred in water bath and is volatilized completely to solvent, then at 100 DEG C
After lower drying 12-20h, 2h is dried at 140 DEG C；
（2）Silicon rubber is dissolved with tetrahydrofuran, wherein the mass ratio of silicon rubber and tetrahydrofuran is 30:70, prepare silicon rubber
Solution, rear 2,5- dimethyl -2, the 5- bis(t-butylperoxy) hexanes for adding 1.5-3.2wt%, 15- is added after well mixed
30wt% is modified boron nitride, adds after ultrasonic disperse 15min, that is, coating silicon rubber slurry is made；
（3）Glass fabric is dried with distillation water washing, adds in weight complex acid potassium and the concentrated sulfuric acid after stirring 15min, adds double
Oxygen water removes unreacted heavy complex acid potassium, washs drying, then it is 45- glass fibre to be placed in the absolute ethyl alcohol of acidifying in temperature
0.5-2h is soaked at 55 DEG C, polydimethylhydroxysiloxane, absolute ethyl alcohol, distilled water, Tween 80 are configured to emulsion, instillation contains
Have in glass fibers fiber cloth absolute ethyl alcohol acid solution, 60-80 DEG C of reaction 1.5-3h of keeping temperature, product is washed with ethanol and dried i.e.
Can；
（4）Glass fabric after surface treatment is immersed in silicon rubber slurry, taken out, treats that tetrahydrofuran volatilizees, soaks again
Stain, volatilization, 5-10 times repeatedly, is then vulcanized composite, and curing temperature is 170 DEG C, time 2-8min, you can.
A kind of 2. preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
Suddenly（1）The mass ratio of mesoboric acid and melamine is 1:0.5-4, the dosage of silane coupler are 18-25wt%, the baking at 100 DEG C
The dry time is 15h.
A kind of 3. preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
Suddenly（2）In the dosages of 2,5- dimethyl -2,5- bis(t-butylperoxy) hexanes be 2.4wt%, the dosage of modified boron nitride is
19-25wt%
A kind of preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
（3）The pH of the ethanol solution of middle acidifying is 2-3.
A kind of 4. preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
Suddenly（3）Middle polydimethylhydroxysiloxane, absolute ethyl alcohol, the mass ratio of distilled water are 1-4:8:4, Tween 80 for mixed solution
The 2-3wt% of mass fraction.
A kind of 5. preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
Suddenly（3）Middle glass fibre is placed in the absolute ethyl alcohol of acidifying soaks 1-1.5h in the case where temperature is 50-55 DEG C.
A kind of 6. preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
Suddenly（3）Reaction temperature of the middle glass fabric in absolute ethyl alcohol acid solution is 65-75 DEG C, reaction time 2h.
A kind of 7. preparation method of high heat conduction composite heat interfacial material according to claim 1, it is characterised in that：The step
Suddenly（4）Cure time is 5min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712948A (en) * | 2020-12-29 | 2021-04-27 | 晟大科技(南通)有限公司 | Preparation method of solvent-free mica tape |
| CN115547691A (en) * | 2022-11-04 | 2022-12-30 | 深圳市米韵科技有限公司 | Heat-conducting diaphragm for high-frequency capacitor and preparation method thereof |
| CN115678234A (en) * | 2022-11-15 | 2023-02-03 | 浙江万兴新材料有限公司 | BMC composite material and preparation method thereof |
-
2017
- 2017-08-21 CN CN201710716310.7A patent/CN107629458A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712948A (en) * | 2020-12-29 | 2021-04-27 | 晟大科技(南通)有限公司 | Preparation method of solvent-free mica tape |
| CN115547691A (en) * | 2022-11-04 | 2022-12-30 | 深圳市米韵科技有限公司 | Heat-conducting diaphragm for high-frequency capacitor and preparation method thereof |
| CN115678234A (en) * | 2022-11-15 | 2023-02-03 | 浙江万兴新材料有限公司 | BMC composite material and preparation method thereof |
| CN115678234B (en) * | 2022-11-15 | 2023-09-26 | 浙江万兴新材料有限公司 | BMC composite material and preparation method thereof |
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Application publication date: 20180126 |