CN105754350A - High-heat-conductivity gel sheet and preparation method thereof - Google Patents
High-heat-conductivity gel sheet and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention provides a high-heat-conductivity gel sheet and a preparation method thereof. The high-thermal-conductivity gel sheet comprises a silicon oil matrix and a heat-conducting filling, wherein the silicon oil matrix is terminal vinyl silicon oil and terminal hydrogen-containing silicone oil; and the heat-conducting filling is metal oxide and/or hydroxide and/or graphene. According to the high-heat-conductivity gel sheet and the preparation method, the technical problems that the heat conductivity is poor, the filling is not uniformly mixed, the addition amount of the heat-conducting filling is low, and the like of existing gel sheets are solved, the performance of the existing gel sheets is improved, and purposes of improving the heat conductivity of the gel sheets, uniformly mixing the filling and improving the mechanical property of cured products are achieved.
Description
Technical field
The present invention relates to thermal interfacial material technical field, be specifically related to a kind of high thermally conductive gel sheet and preparation method thereof.
Background technology
Along with various electronics, the multifunction of electric equipment products and miniaturization, it is because negative effect of bringing of heat dissipation problem is also day by day serious therewith.Due to internal temperature raising electronic component service life reduction, chip processing speed can be brought to slow down, the series of problems such as idle power increase, heat dissipation design has become the important component part of hyundai electronics electrical apparatus industry.Use fin derivation heat is one of the most frequently used heat dissipation design, but owing to there is inevitable gap between fin and thermal source, significantly reduces radiating effect.
Thermal interfacial material (TIM), it is also called Heat Conduction Material, the microvoid produced when engaging for filling or contact between thermal source with fin and the hole of surface irregularity, improve the real contact area between fin and thermal source greatly, reduction system thermal resistance, improves the performance of device heat radiation.Thermal interfacial material (TIM) includes the variety classeses such as heat-conducting silicone grease, thermally conductive gel sheet, thermal conductive adhesive, phase-change material.
Thermally conductive gel sheet, is a kind of novel thermal interfacial material (TIM) occurred in recent years.Thermally conductive gel sheet is a kind of sheet material by the compacting of high plasticity material, can prepare the product of different-thickness as requested, and can cut into difformity as required, it is easy to use.Owing to thermally conductive gel sheet is soft and is prone to deformation, different materials surface can be fitted under executing stressed situation closely, thus interface contact heat resistance is greatly lowered.Especially for the applied environment that diverse location gap width difference is bigger, due to the unlimited compressibility of thermally conductive gel sheet, it is possible to gap is sufficient filling with and improves the heat conduction and heat radiation performance of system.Further, since thermally conductive gel sheet is originally as solid material, interiors of products uniform component is stable, thus avoiding phenomenons such as the layering of heat-conducting silicone grease, exsiccation, trickling occur, stability and the reliability of electric equipment products is greatly improved.
The basic recipe of thermally conductive gel sheet is heat filling and silicone oil, and wherein, conventional heat filling mostly is metal-oxide and hydroxide, such as zinc oxide, aluminium oxide, silicon dioxide, aluminium hydroxide, magnesium hydroxide etc..Metal-oxide is cheap with hydroxide, but heat conductivity is relatively low, generally only has 10～40W/m K, and thermally conductive gel sheet heat conductivity prepared therefrom generally only has 1～3W/m K, and product heat conductivility is poor.Graphene, as a kind of brand-new Heat Conduction Material, has high heat conductivity (5000W/m K), has the mechanical property of excellence simultaneously, is the desirable feedstock of a kind of heat-conductive composite material.Silicone oil aspect, the most frequently used raw material is the methyl-silicone oil of viscosity 1000～3000mPa s, is accompanied by the organosilicon rubber of molecular weight 20～600,000.Owing to the viscosity of system is relatively big, when mixing with heat filling, needs mix in case of heating for a long time, and reduce the addition of heat filling, reduce further the heat conductivity of product.
Summary of the invention
It is an object of the invention to, a kind of high thermally conductive gel sheet and preparation method thereof is provided, solve the technical problems such as existing gel film heat conductivility is poor, filler mixing is uneven, heat filling addition is low, to improve the performance of existing gel film, reach to improve the heat conductivility of gel film, Homogeneous phase mixing filler, improve mechanical performance purpose after products solidifying, for realizing this technique effect, the technical solution used in the present invention is as follows:
A kind of high thermally conductive gel sheet, this high thermally conductive gel sheet includes silicone oil matrix and heat filling；
Described silicone oil matrix is vinyl-terminated silicone fluid and end containing hydrogen silicone oil；
Described heat filling is metal-oxide or/and hydroxide is or/and Graphene.
Further, the weight portion of described silicone oil matrix and heat filling is vinyl-terminated silicone fluid 25～100 parts, holds containing hydrogen silicone oil 0.05～5 part, and metal-oxide 100～500 parts is or/and 200～1000 parts of hydroxide is or/and Graphene 10～100 parts.
Closer, the weight portion of described silicone oil matrix and heat filling is vinyl-terminated silicone fluid 50～80 parts, holds containing hydrogen silicone oil 0.5～3 part, and metal-oxide 200～300 parts is or/and 500～800 parts of hydroxide is or/and Graphene 30～70 parts.
The weight portion of described silicone oil matrix and heat filling is vinyl-terminated silicone fluid 60 parts, holds containing hydrogen silicone oil 3 parts, and metal-oxide 250 parts is or/and 250 parts of hydroxide is or/and Graphene 60 parts.
Described vinyl-terminated silicone fluid viscosity is 100～3000mPa s, and described end containing hydrogen silicone oil hydrogen content is 0.005～1%.
Described metal-oxide is aluminium oxide, zinc oxide or magnesium oxide；
Described hydroxide is aluminium hydroxide.
The high thermally conductive gel sheet of described one, its manufacture method comprises the steps of
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, mixed at room temperature 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
(3) by compound hot pressing or calendering formation, heating；
(4) collect after products solidifying standby.
Further, compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, is continued 3～20min by described step (3).
Further, described step (3) is by compound by vulcanizing press molding, and heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s.
Preferred preparation method is:
(1) by vinyl-terminated silicone fluid 25～100 parts, holding containing hydrogen silicone oil 0.05～5 part, metal-oxide 100～500 parts and/or 200～1000 parts of hydroxide and/or Graphene 10～100 parts put into mill or banbury, mixed at room temperature 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
(3) by compound hot pressing or calendering formation, heating；
(4) collect after products solidifying standby.
It is an advantage of the current invention that:
First, selection Graphene is heat filling, significantly improves the heat conductivility of product.
Secondly, using low viscosity vinyl-terminated silicone fluid is matrix with end containing hydrogen silicone oil, is conducive to heat filling to disperse, particularly with the filler that the oil factors such as Graphene are high, it is possible to faster carrying out evenly mixes.
Again, using low viscosity vinyl-terminated silicone fluid is matrix with end containing hydrogen silicone oil, is heating and curing, both ensure that filler mix homogeneously, improve again the mechanical performance after products solidifying after material molding.
Finally, the concise in technology of the present invention, simple to operate, for the product of different viscosities, can selecting and different prolong molded mode, the relatively low compound of viscosity can carry out calendering formation, the higher compound of viscosity cannot calendering formation, it is possible to by vulcanizing press molding.
Detailed description of the invention
Embodiment 1
Take following raw material, be used for preparing the high thermally conductive gel sheet that viscosity is relatively low,
Silicone oil matrix: vinyl-terminated silicone fluid 25～100 parts, holds containing hydrogen silicone oil 0.05～5 part；
Heat filling: aluminium oxide 100～500 parts, zinc oxide 100～500 parts, magnesium oxide 100～500 parts, aluminium hydroxide 200～1000 parts, Graphene 10～100 parts；
Following methods is adopted to prepare the high thermally conductive gel sheet that viscosity is relatively low:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, continuing 3～20min, the product of calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 2
Take following raw material, be used for preparing the high thermally conductive gel sheet that viscosity is higher,
Silicone oil matrix: viscosity is the vinyl-terminated silicone fluid 50～80 parts of 100～3000mPa s, holds containing hydrogen silicone oil 0.5～3 part, and described end containing hydrogen silicone oil hydrogen content is 0.005～1%；
Heat filling: aluminium oxide 200～300 parts, zinc oxide 200～300 parts, magnesium oxide 200～300 parts, aluminium hydroxide 500～800 parts, Graphene 30～70 parts；
Following methods is adopted to prepare the high thermally conductive gel sheet that viscosity is higher:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by vulcanizing press molding, heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s；
It is thicker that vulcanizing press prolongs molded product, and general thickness is 3～10mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 3
Take following raw material, the high thermally conductive gel sheet relatively low in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 60 parts, holds containing hydrogen silicone oil 3 parts；
Heat filling: aluminium oxide 250 parts, aluminium hydroxide 250 parts, Graphene 60 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, 3～20min is continued；The product of direct calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 4
Take following raw material, the high thermally conductive gel sheet higher in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 25 parts, described vinyl-terminated silicone fluid viscosity is 100～3000mPa s, holds containing hydrogen silicone oil 5 parts, and described end containing hydrogen silicone oil hydrogen content is 0.005～1%；
Heat filling: aluminium oxide 300 parts, aluminium hydroxide 1000 parts, Graphene 10 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by vulcanizing press molding, heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s；
It is thicker that vulcanizing press prolongs molded product, and general thickness is 3～10mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 5
Take following raw material, the high thermally conductive gel sheet relatively low in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 100 parts, holds containing hydrogen silicone oil 0.05 part；
Heat filling: aluminium oxide 500 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, 3～20min is continued；The product of direct calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 6
Take following raw material, the high thermally conductive gel sheet higher in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 30 parts, holds containing hydrogen silicone oil 3.5 parts；
Heat filling: aluminium oxide 100 parts and aluminium hydroxide 1000 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by vulcanizing press molding, heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s；
It is thicker that vulcanizing press prolongs molded product, and general thickness is 3～10mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 7
Take following raw material, the high thermally conductive gel sheet relatively low in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 50 parts, described vinyl-terminated silicone fluid viscosity is 100～3000mPa s, holds containing hydrogen silicone oil 3 parts, and described end containing hydrogen silicone oil hydrogen content is 0.005～1%；
Heat filling: aluminium hydroxide 800 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, 3～20min is continued；The product of direct calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 8
Take following raw material, the high thermally conductive gel sheet higher in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 80 parts, holds containing hydrogen silicone oil 0.5 part；
Heat filling: Graphene 100 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by vulcanizing press molding, heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s；
It is thicker that vulcanizing press prolongs molded product, and general thickness is 3～10mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 9
Take following raw material, the high thermally conductive gel sheet relatively low in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 30 parts, described vinyl-terminated silicone fluid viscosity is 100～3000mPa s, holds containing hydrogen silicone oil 4 parts, and described end containing hydrogen silicone oil hydrogen content is 0.005～1%；
Heat filling: aluminium oxide 200 parts, Graphene 70 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, 3～20min is continued；The product of direct calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 10
Take following raw material, the high thermally conductive gel sheet higher in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 80 parts, described vinyl-terminated silicone fluid viscosity is 100～3000mPa s, holds containing hydrogen silicone oil 2.5 parts, and described end containing hydrogen silicone oil hydrogen content is 0.005～1%；
Heat filling: aluminium hydroxide 500 parts, Graphene 10 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by vulcanizing press molding, heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s；
It is thicker that vulcanizing press prolongs molded product, and general thickness is 3～10mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 11
Take following raw material, the high thermally conductive gel sheet relatively low in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 30 parts, holds containing hydrogen silicone oil 4 parts；
Heat filling: aluminium oxide 200 parts, zinc oxide 600 parts, magnesium oxide 300 parts, Graphene 50 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, 3～20min is continued；The product of direct calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 12
Take following raw material, the high thermally conductive gel sheet higher in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 80 parts, holds containing hydrogen silicone oil 2.5 parts；
Heat filling: zinc oxide 200 parts, magnesium oxide 500 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by vulcanizing press molding, heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s；
It is thicker that vulcanizing press prolongs molded product, and general thickness is 3～10mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
Embodiment 13
Take following raw material, the high thermally conductive gel sheet relatively low in order to prepare viscosity；
Silicone oil matrix: vinyl-terminated silicone fluid 30 parts, holds containing hydrogen silicone oil 4 parts；
Heat filling: zinc oxide 200 parts, magnesium oxide 100 parts, aluminium hydroxide 700 parts, Graphene 30 parts；
Following methods is adopted to prepare high thermally conductive gel sheet:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, room temperature 25 DEG C mixing 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
In reaction, platinum catalyst content in total material is 1～1000ppm；
(3) by compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, 3～20min is continued；
The product of direct calendering formation is relatively thin, and general thickness is 1～5mm；
(4) collect after products solidifying standby.Solidification now, after there is chemical reaction when referring to the mixture heating in step (3), system is become solid from liquid or pasty state.
In the present invention, using low viscosity vinyl-terminated silicone fluid is carrier with end containing hydrogen silicone oil, adds metal-oxide and/or hydroxide and/or Graphene is heat filling.Owing to system viscosity is low, the high addition being beneficial to filler mixes with dispersion.Catalyst is added, again discharging after mixing after being sufficiently mixed.By the mode of hot pressing or calendering, after molding, sheet material is heated.Low viscosity vinyl-terminated silicone fluid reacts under the effect of catalyst with end containing hydrogen silicone oil, generates high viscosity, macromolecule organosilicon, thus obtaining the thermally conductive gel sheet that mechanical strength is higher.By the technology of the present invention, overcoming existing thermally conductive gel sheet, many with metal-oxide or hydroxide for heat filling, heat conductivity is low, the shortcoming of product heat conductivility difference；Simultaneously, it is to avoid using high molecular weight silicone oil or organosilicon rubber as organic carrier, owing to its initial viscosity is high, have impact on the addition of filler and mixed effect, reduce the heat conductivity of product.
In the present invention, the step (3) in preparation method is by two kinds of methods product mainly for different viscosities, and the relatively low compound of viscosity can carry out calendering formation, and product now is relatively thin, and thickness is generally 1～5mm；The higher compound of viscosity cannot calendering formation, only by vulcanizing press molding, but such product is thicker, is generally 3～10mm.It will be obvious to one with ordinary skill in the art that, in chemical reaction, due to the change in reaction, so catalyst can be scope in right amount, in the preparation process in accordance with the present invention, the platinum catalyst added in described step (2) content in total material is 1～1000ppm, and those skilled in the art according to the change in concrete operations, can increase or reduce catalyst.
Above the preferred embodiment for the present invention is explained in detail; but the invention is not restricted to above-mentioned embodiment; in the ken that those of ordinary skill in the art possess; can also make a variety of changes under the premise without departing from present inventive concept; these changes relate to correlation technique well-known to those skilled in the art, and these both fall within the protection domain of patent of the present invention.
Many other can be made without departing from the spirit and scope of the present invention to change and remodeling.Should be appreciated that and the invention is not restricted to specific embodiment, the scope of the invention limits.
Claims (10)
1. one kind high thermally conductive gel sheet, it is characterised in that this high thermally conductive gel sheet includes silicone oil matrix and heat filling；
Described silicone oil matrix is vinyl-terminated silicone fluid and end containing hydrogen silicone oil；
Described heat filling is metal-oxide or/and hydroxide is or/and Graphene.
2. the high thermally conductive gel sheet of one according to claim 1, it is characterized in that, the weight portion of described silicone oil matrix and heat filling is vinyl-terminated silicone fluid 25～100 parts, end containing hydrogen silicone oil 0.05～5 part, metal-oxide 100～500 parts is or/and 200～1000 parts of hydroxide is or/and Graphene 10～100 parts.
3. the high thermally conductive gel sheet of one according to claim 2, it is characterized in that, the weight portion of described silicone oil matrix and heat filling is vinyl-terminated silicone fluid 50～80 parts, end containing hydrogen silicone oil 0.5～3 part, metal-oxide 200～300 parts is or/and 500～800 parts of hydroxide is or/and Graphene 30～70 parts.
4. the high thermally conductive gel sheet of one according to claim 2, it is characterized in that, the weight portion of described silicone oil matrix and heat filling is vinyl-terminated silicone fluid 60 parts, holds containing hydrogen silicone oil 3 parts, and metal-oxide 250 parts is or/and 250 parts of hydroxide is or/and Graphene 60 parts.
5. the high thermally conductive gel sheet of one according to claim 1, it is characterised in that described vinyl-terminated silicone fluid viscosity is 100～3000mPa s, described end containing hydrogen silicone oil hydrogen content is 0.005～1%.
6. the high thermally conductive gel sheet of one according to claim 1, it is characterised in that described metal-oxide is aluminium oxide, zinc oxide or magnesium oxide；
Described hydroxide is aluminium hydroxide.
7., according to the arbitrary described high thermally conductive gel sheet of one of claim 1-6, its manufacture method comprises the following steps:
(1) vinyl-terminated silicone fluid, end containing hydrogen silicone oil, heat filling are put into mill or banbury, mixed at room temperature 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
(3) by compound hot pressing or calendering formation, heating；
(4) collect after products solidifying standby.
8. the preparation method of a kind of high thermally conductive gel sheet according to claim 7, it is characterised in that compound by, after calendering formation, heating 80～150 DEG C by continuous tunnel furnace, is continued 3～20min by described step (3).
9. the preparation method of a kind of high thermally conductive gel sheet according to claim 7, it is characterised in that described step (3) is by compound by vulcanizing press molding, and heating-up temperature is 60～150 DEG C, pressure 0.5～30MPa, dwell time 30～300s.
10. the preparation method according to the arbitrary described a kind of high thermally conductive gel sheet of claim 7-9, it is characterised in that
(1) by vinyl-terminated silicone fluid 25～100 parts, holding containing hydrogen silicone oil 0.05～5 part, metal-oxide 100～500 parts and/or 200～1000 parts of hydroxide and/or Graphene 10～100 parts put into mill or banbury, mixed at room temperature 1～3h；
(2), after mixing, platinum catalyst, mixed at room temperature 0.5～1h, discharging are added；
(3) by compound hot pressing or calendering formation, heating；
(4) collect after products solidifying standby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610209084.9A CN105754350A (en) | 2016-04-06 | 2016-04-06 | High-heat-conductivity gel sheet and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106432767A (en) * | 2016-09-14 | 2017-02-22 | 北京航空航天大学 | Preparation method of photothermal self-lubricating oil gel for liquid drop remote accurate driving |
| CN108641371A (en) * | 2018-04-09 | 2018-10-12 | 苏州创励新材料科技有限公司 | A kind of gel film and preparation method thereof of high heat conduction, high electrical insulating properties |
| CN109609040A (en) * | 2018-12-11 | 2019-04-12 | 苏州鸿凌达电子科技有限公司 | A method of it being bonded double-layer graphite piece using graphene nano gel as adhesive layer |
| CN112143235A (en) * | 2020-09-26 | 2020-12-29 | 追信数字科技有限公司 | Alloy corrosion-resistant heat exchange tube and manufacturing method thereof |
| CN114015117A (en) * | 2021-10-22 | 2022-02-08 | 世晨材料技术(上海)有限公司 | Heat-conducting filler and anti-aging organic silicon heat-conducting gel prepared from heat-conducting filler |
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| CN103342896A (en) * | 2013-06-26 | 2013-10-09 | 苏州天脉导热科技有限公司 | High temperature resistant heat-conducting silica gel sheet 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 |
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| CN103342896A (en) * | 2013-06-26 | 2013-10-09 | 苏州天脉导热科技有限公司 | High temperature resistant heat-conducting silica gel sheet 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106432767A (en) * | 2016-09-14 | 2017-02-22 | 北京航空航天大学 | Preparation method of photothermal self-lubricating oil gel for liquid drop remote accurate driving |
| CN106432767B (en) * | 2016-09-14 | 2018-12-21 | 北京航空航天大学 | A kind of preparation method of the photo-thermal self-lubricating oleogel remotely accurately driven for drop |
| CN108641371A (en) * | 2018-04-09 | 2018-10-12 | 苏州创励新材料科技有限公司 | A kind of gel film and preparation method thereof of high heat conduction, high electrical insulating properties |
| CN109609040A (en) * | 2018-12-11 | 2019-04-12 | 苏州鸿凌达电子科技有限公司 | A method of it being bonded double-layer graphite piece using graphene nano gel as adhesive layer |
| CN112143235A (en) * | 2020-09-26 | 2020-12-29 | 追信数字科技有限公司 | Alloy corrosion-resistant heat exchange tube and manufacturing method thereof |
| CN114015117A (en) * | 2021-10-22 | 2022-02-08 | 世晨材料技术(上海)有限公司 | Heat-conducting filler and anti-aging organic silicon heat-conducting gel prepared from heat-conducting filler |
| CN114015117B (en) * | 2021-10-22 | 2024-01-09 | 世晨材料技术(上海)有限公司 | Heat-conducting filler and ageing-resistant organic silicon heat-conducting gel prepared from heat-conducting filler |
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