CN1443806A - Silicon rebber sheet material with heat-resistance heat-conductivity for thermocopression seal - Google Patents

Silicon rebber sheet material with heat-resistance heat-conductivity for thermocopression seal Download PDF

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CN1443806A
CN1443806A CN03120556A CN03120556A CN1443806A CN 1443806 A CN1443806 A CN 1443806A CN 03120556 A CN03120556 A CN 03120556A CN 03120556 A CN03120556 A CN 03120556A CN 1443806 A CN1443806 A CN 1443806A
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silicone rubber
thermocompression bonding
rubber sheet
heat conductivity
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CN1233747C (en
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中野昭生
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Shin Etsu Chemical Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • C08K3/22—Oxides; Hydroxides of metals
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant

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Abstract

The present invention provides a thermocompression bonding silicone rubber sheet with heat resistance and thermal conductivity, capable of being used at such a high temperature as 300[deg.]C or higher, having the good thermal conductivity, and excellent in durability. This thermocompression bonding silicone rubber sheet with the heat resistance and thermal conductivity is given by forming a silicone rubber composition into a sheet and curing the formed sheet. The silicone rubber composition comprises (A) an organopolysiloxane having an average degree of polymerization of >=200 in an amount of 100 pts.wt., (B) carbon black having a volatile content of <=0.5 wt.% which excludes water content and having a BET specific surface area of >=100 m<SP>2</SP>/g in an amount of 10-100 pts.wt., and (C) a hardening agent.

Description

Heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding
Technical field
The present invention relates to a kind of with when conducting heat, the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding that evenly is pressurised into purpose and uses, especially, intensity reduced for a short time when it related to a kind of heating, under the high temperature more than 300 ℃, can use repeatedly, be suitable for being used for the sheet material of veneer sheet or soft printed base plate moulding, or be used for anisotropic conductive film that electrode such as liquid-crystal display connects with the hot pressing sheet material, the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of excellent in te pins of durability.
Background technology
As the thermal conductivity electrically insulating material, known so far have: be combined with the sheet material (opening clear 47-32400 number with reference to the spy) of powder such as beryllium oxide, aluminum oxide, aluminium hydroxide, magnesium oxide or zinc oxide and be combined with boron nitride in silicon rubber in silicon rubber, with the sheet material of netted insulating material reinforcement (opening clear 54-184074 number with reference to real) etc., its heat release insulation that has been used to heat generation parts such as power transistor, thyristor, rectifier, transformer or MOS FET is used.But, if this material is used under the hot conditions more than 200 ℃, since impurity in the heat conductivity imparting agent or the influence of pH, the silicon rubber deterioration.
On the other hand, above-mentioned thermal conductivity electrical isolation sheet material is used as with pressure forming machine shape layer pressing plate, the isochronous sheet material of soft printing substrate, the buffering sheet material when with the pressing machine anisotropic conductive film of the soft printing substrate of the connector portions that is used to connect the liquid-crystal display electrode and driving circuit lift-launch being carried out hot pressing.For example, disclose in the Te Kaiping 5-198344 communique and in silicon rubber, cooperated boron nitride, with the sheet material of woven fiber glass reinforcement, the spy opens to disclose in the flat 6-36853 communique in silicon rubber and cooperates boron nitride and conductive material, with woven fiber glass reinforcement and sheet material with anti-charging property.But, in these cases, any shortcoming that all has silicon rubber generation deterioration under hot conditions.However, particularly nearest, the material of soft printing substrate and anisotropic conductive film is constantly to the development and change of high-temperature molding type, thereby in order further to shorten the pressing cycle productivity is improved in addition, mold temperature is also constantly improving, and therefore develops the target that the further thermally conductive silicone rubber sheet material that improves of thermotolerance and thermal conductivity just becomes the desired realization of people.
To this, it is that carbon black below the 0.5 weight % is as the heat conductivity imparting agent that Te Kaiping 7-11010 communique discloses by using dewater exceptionally volatile component of 20～150 weight parts, operable under the temperature more than 300 ℃, as to have thermotolerance and good heat conductivity heat-resisting heat conductivity silicon rubber sheet material.But in this case, because the undercapacity under the high temperature, therefore existing might the destructive shortcoming owing to use continuously.
In addition, the spy opens flat 8-174765 communique and discloses a kind of with the above-mentioned heat-resisting heat conductivity silicon rubber composite sheet that has cooperated sooty rubber composition and heat-resistant resin film laminating.In this case, though be improved aspect intensity and the release property, but owing to using the heat-resistant resin film to suppress the flexibility of sheet material, and might when pressing, become inhomogeneous by pressure, in addition, under the high temperature more than 300 ℃, though be above-mentioned heat-resistant resin film, also be easy to generate thermal distortion, therefore have the shortcoming that to use repeatedly.
Summary of the invention
Therefore, inventors of the present invention can use under the high temperature more than 300 ℃ in order to obtain, when having good heat conductivity, the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of excellent in te pins of durability, carried out research with keen determination, it found that, is below the 0.5 weight % and the BET specific surface area is 100m with having cooperated dewater exceptionally volatile component of 10～100 weight parts 2When the above carbon black of/g is cured as sheet as the rubber composition of heat conductivity imparting agent, can obtains good result, thereby finish the present invention.
Therefore, the object of the present invention is to provide a kind of can under the high temperature more than 300 ℃, the use, and have good heat conductivity, simultaneously the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of excellent in te pins of durability.
Above-mentioned purpose of the present invention is reached by using heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding, this silicon rubber sheet material is characterised in that: it is for to be shaped to sheet with rubber composition, make its heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding that is solidified to form, above-mentioned rubber composition is a organopolysiloxane more than 200 by (A) mean polymerisation degree: dewater exceptionally volatile component of 100 weight parts, (B) is that the following and BET specific surface area of 0.5 weight % is 100m 2The carbon black that/g is above: 10～100 weight parts, and (C) solidifying agent form.
Embodiment
Usually, the thermotolerance of silicon rubber is difference according to the difference of cooperate forming, and it is subjected to the influence of the kind, contents of ethylene, the kind of heat-resisting additive, the kind of weighting agent etc. of base polymer.In addition, owing to be subjected to the influence of pH, moisture or impurity in the composition, therefore be necessary additive selected done sufficient attention.In addition, the weighting agent as thermotolerance is improved can use carbon black, but must consider impurity and volatile component in the carbon black.Especially, when in order to improve heat conductivity during the heavy addition carbon black, its volatile component has just become important aspect.
The sooty volatile component is represented with the weight of the oxygen compound (acidic components such as carboxyl, benzoquinones, lactone, hydroxyl) of its surface chemistry absorption, because heating makes this oxygen compound gasify from the surface, therefore the thermotolerance to silicon rubber has disadvantageous effect.Therefore, be carbon black below the 0.5 weight % by using volatile component, can be implemented in operable thermotolerance under the high temperature more than 300 ℃.
In addition, by cooperating reinforcement silicon-dioxide, the intensity of silicon rubber can improve significantly, if but when reaching a high temperature, just intensity can significantly reduce.This can think because the hydroxyl of silica sphere and combining of siloxane polymer are thermo-labile causes.Therefore, in the present invention, be 100m by using the BET specific surface area 2The carbon black that/g is above, the intensity in the time of can suppressing high temperature reduces by a small margin, and the weather resistance of hot pressing silicon rubber sheet material is improved.
And then, by in silicon rubber, cooperating carbon black, make the silicon rubber sheet material have electroconductibility, therefore can remove the static that produces in the pressing working procedure, therefore can prevent the destruction of the electronic unit that carries in the absorption of rubbish, dust etc. and the circuit.
The mean polymerisation degree of employed conduct (A) composition is the organopolysiloxane more than 200 among the present invention, and it is represented with a following average group accepted way of doing sth (1).
R nSiO (4-n)/2?????????(1)
In the formula, n is 1.95～2.05 positive number, R represents to replace or unsubstituted monovalence alkyl, particularly, it comprises halogenation alkyl that the hydrogen atom of aryl such as alkenyls such as cycloalkyl such as alkyl such as methyl, ethyl, propyl group, cyclopentyl, cyclohexyl, vinyl, allyl group, phenyl, tolyl or these groups is partly replaced by chlorine atom, fluorine atom etc. etc.In the present invention, usually, the main chain of organopolysiloxane preferably is made of dimethyl siloxane units, or in the main chain of this organopolysiloxane, imported vinyl, phenyl, trifluoro propyl etc.The end of molecular chain can be with three organic radical silyls or hydroxy-end capped in addition, and as this three organic radicals silyl, it comprises trimethyl silyl, dimethyl vinyl silyl, trivinyl silyl etc.Preferably, the polymerization degree of this composition is more than 200, and the viscosity in the time of 25 ℃ is more than the 300cs.If the polymerization degree is below 200, the physical strength deterioration after then solidifying becomes fragile.
Secondly, as (B) composition, exceptionally the volatile component of dewatering is that the following and BET specific surface area of 0.5 weight % is 100m 2The carbon black that/g is above, it also makes its physical strength when the thermotolerance that makes the silicon rubber sheet material improves, and the intensity when particularly heating improves, and then owing to making its conduction give its charged preventing property.According to the difference of its manufacture method, carbon black can be divided into furnace treated black, thermally oxidized black, pyrolytic carbon black, Shawinigan black etc.As volatile component is carbon black below the 0.5 weight %, the Shawinigan black of preferred specific surface area prosperity.The measuring method of volatile component is on the books in " the rubber grade carbon black test method " of JIS K 6221.Particularly, the carbon black of specified amount is packed in the alms bowl, be determined at 950 ℃ of heating volatile loss after 7 minutes.
For (A) composition of 100 weight parts, be somebody's turn to do preferred 10～100 weight parts of use level of (B) composition, use in the scope particularly preferably in 20～80 weight parts.If be below 10 weight parts, then heat conductivity and physical strength deficiency if be more than 100 weight parts, then not only cooperate the difficulty that becomes, and the forming process extreme difference that also becomes.
As the solidifying agent of (C) composition, can from be generally used for the known so far solidifying agent of silicon rubber solidified, suitably select to use.As this solidifying agent, it comprises the ditertiary butyl peroxide, 2 that for example is used for free radical reaction, 5-dimethyl-2, organo-peroxides such as 5-two (tert-butyl hydroperoxide) hexane, dicumyl peroxide; As the addition reaction solidifying agent, when the organopolysiloxane of (A) composition had alkenyl, it was by containing the material of forming with the poly-organohydrogensiloxanes and the platinum metal catalysts of Siliciumatom bonded hydrogen atom more than 2 in the molecule; As the condensation reaction solidifying agent, when the organopolysiloxane of (A) composition has silanol group, for example for having the silicoorganic compound that 2 above alkoxyl groups, acetoxyl group, ketoxime base, propoxy-etc. add the water decomposition group.The addition of these solidifying agent can be identical with the situation of common silicon rubber.
In the present invention, by in this rubber composition, adding ceria oxide powder, can improve thermotolerance.For (A) composition of 100 weight parts, the addition of above-mentioned cerium oxide is in the scope of 0.1～5 weight part, if surpass 5 weight parts, then thermotolerance can reduce on the contrary.In addition, as this ceria oxide powder, preferably use the BET specific surface area to be 50m 2The ceria oxide powder of/g with comparison bigger serface.
In the present invention, in order to improve its heat conductivity, except the carbon black that adds above-mentioned conduct (B) composition, preferably add other heat conductivity weighting agents.As this heat conductivity weighting agent, metal-powders such as the preferably inorganic powders such as crystallinity silicon-dioxide of aluminum oxide, boron nitride, aluminium nitride, aluminium hydroxide, magnesium oxide, zinc oxide, quartz and so on, or aluminium, silver, nickel, copper, iron etc.For the organopolysiloxane of 100 weight parts, preferred 50～2,000 weight part of the use level of these heat conductivity weighting agents particularly preferably in 100～1, uses in the 600 weight part scopes.If be below 50 weight parts, heat conductivity deficiency then, if surpass 2,000 weight parts, forming process variation not only then, the physical strength after the curing reduces, and the flexibility of rubber has also been lost.In addition, from the viewpoint that can effectively conduct heat as heat-transfer medium, more than the preferred 0.5W/mK of the thermal conductivity of rubber composition.
In the present invention, except above-mentioned substance, in rubber composition, can add bonding imparting agents such as dispersion agent, silane coupling agent, titanium coupling agent such as weighting agents such as silica-filled dose of reinforcement such as wetting ability silicon-dioxide, hydrophobic silica, clay, lime carbonate, diatomite, titanium dioxide, low molecular weight polyorganosiloxane ester, silanol in case of necessity, give flame retardant resistance platinum metal catalysts, improve the polytetrafluoroethylparticle particle etc. of the rubber strength of rubber unvulcanizate.
The cooperation of rubber composition of the present invention can be carried out mixingly with mixing machines such as two rollers, kneader, Banbury, planetary stirring machines to mentioned component, usually, preferably added before only using solidifying agent.In addition, forming method as silicon rubber sheet material involved in the present invention, it comprise with calendering or forcing machine will until the rubber composition that has cooperated solidifying agent roll become make its solidified method after the fixed thickness, aqueous rubber composition or the aqueous rubber composition that is dissolved in the toluene equal solvent are applied to make its solidified method etc. on the film afterwards.The silicon rubber sheet material of moulding like this, its thickness is preferably in the scope of 0.1～10mm.If thickness is below the 0.1mm, then owing to can not attach to fully, thereby the pressurization heterogeneity that becomes easily, if be thickness more than the 10mm, then heat transfer aspect variation by on the pressing body.
Silicon rubber sheet material of the present invention, because it has excellent thermotolerance, heat conductivity, intensity, operation and as the elasticity of silicon rubber, therefore in the time of can using effect pressure forming machine shape layer pressing plate, soft printed base plate effectively, when conducting heat, evenly be pressurised into sheet material that purpose uses, with add the hot pressing machine to the electrode contact portion that is used for liquid crystal display or PDP display screen the sheet material during with anisotropic conductive film (ACF) hot pressing that the electrode contact portion that drives with the FPC substrate of LSI lift-launch is connected.
Embodiment
Below in conjunction with embodiment the present invention is described in more detail, but the present invention is not limited to these embodiment.
Embodiment 1
Will be as (B) composition with two rollers, 50 weight part median sizes are that 23nm, volatile component are that 0.10 weight %, BET specific surface area are 130m 2The Shawinigan black of/g and conduct (A) composition, 100 weight parts are cooperated by the poly-ethylene methacrylic radical siloxane of the mean polymerisation degree 8000 that 99.85 moles of % dimethyl siloxane units, 0.15 mole of % methyl vinyl siloxane unit constitute, and carry out mixing making its homogenization.This rubber composition for 100 weight parts, the vinylsiloxane complex compound (platinum content is 1 weight %), 0.05 weight part that add the chlorination platinic acid of 0.1 weight part are as the ethynylcyclohexanol of platinum catalyst control agent and the polymethyl hydrogen siloxane shown in the 1.5 weight part following formulas (2), carry out mixingly fully with two rollers, modulate curable rubber composition.
With the calendering formation machine resulting rubber composition is rolled into the thickness of 0.25mm, then it is transferred on polyethylene terephthalate (PET) film of 100 μ m, in 160 ℃ process furnace, stopped 5 minutes, rubber composition is solidified.Subsequently, peel off the PET film, in drying machine, carry out 4 hours thermal treatment under 200 ℃, being made into thickness is the heat-resisting heat conductivity silicon rubber sheet material of 0.25mm.
Embodiment 2
Except add 0.5 weight part BET specific surface area in the rubber composition of embodiment 1 is 140m 2Outside the ceria oxide powder of/g, all the other are identical with embodiment 1 prepares the heat-resisting heat conductivity silicon rubber sheet material that thickness is 0.25mm.
Embodiment 3
As (A) composition, by 80 weight parts by 99.85 moles of % dimethyl siloxane units, 0.15 in the basic composition that the poly-ethylene methacrylic radical siloxane of the mean polymerisation degree 8000 that the poly-ethylene methacrylic radical siloxane of the mean polymerisation degree 8000 that mole % methyl vinyl siloxane unit constitutes and 20 weight parts are made up of 99.5 moles of % dimethyl siloxane units and 0.5 mole of % methyl vinyl siloxane unit constitutes, cooperate as (B) composition with the pressurization kneader, 20 weight part median sizes are 23nm, volatile component is 0.10 weight %, the BET specific surface area is 130m 2The Shawinigan black of/g and 250 weight parts are 140m as alumina powder and the 0.5 weight part BET specific surface area of the median size 2.5 μ m of heat conductivity weighting agent 2The ceria oxide powder of/g carries out mixing making its homogenization.This rubber composition for 100 weight parts, the vinylsiloxane complex compound (platinum content is 1 weight %), 0.025 weight part that add the chlorination platinic acid of 0.05 weight part are as the ethynylcyclohexanol of platinum catalyst control agent and the polymethyl hydrogen siloxane shown in the aforementioned formula of 0.7 weight part (2), it is identical with embodiment 1 to mix the back, and preparing thickness is the heat-resisting heat conductivity silicon rubber sheet material of 0.25mm.
Embodiment 4
Except use 150 weight part median sizes be the aluminium powder form instead of alumina powder of 15 μ m as the heat conductivity weighting agent, other are identical with embodiment 3, preparing thickness is the heat-resisting heat conductivity silicon rubber sheet material of 0.25mm.Comparative example 1
Is that 0.10 weight %, BET specific surface area are 69m except using 50 weight part median sizes as 35nm, volatile component 2The Shawinigan black of/g is as outside (B) composition, and all the other are identical with embodiment 1 prepares the silicon rubber sheet material that thickness is 0.25mm.Comparative example 2
Is that 0.6 weight %, BET specific surface area are 50m except using 50 weight part median sizes as 50nm, volatile component 2The furnace treated black of/g is as outside (B) composition, and all the other are identical with embodiment 1 prepares the silicon rubber sheet material that thickness is 0.25mm.Comparative example 3
Use is in the mean polymerisation degree that 100 weight parts are made up of the dimethyl siloxane units of 99.85 moles of % and 0.15 mole of % methyl vinyl siloxane unit is about 8000 poly-ethylene methacrylic radical siloxane, with the mixing 42 weight part reinforcement silicon-dioxide Aerosil 200 of kneader (trade(brand)name that Japanese ア エ ロ ジ Le Co., Ltd. produces), 4 weight parts are as the α shown in the following formula (3) of dispersion agent, the alpha, omega-dihydroxy dimethyl polysiloxane, under 170 ℃, carry out 1 hour heat treated rubber composition, identically with embodiment 1 prepare the silicon rubber sheet material that thickness is 0.25mm.
Figure A0312055600111
The initial stage characteristic of prepared sheet material reaches the characteristic at 200 ℃ in mensuration embodiment 1～4 and the comparative example 1～3.It the results are shown in table 1.
Table 1
Embodiment Comparative example
??1 ?2 ?3 ??4 ?1 ??2 ???3
Thermal conductivity (W/mK) ??0.53 ?0.53 ?0.86 ??0.95 ?0.54 ??0.51 ???0.25
Initial stage characteristic hardness (A type) 55 57 58 60 55 48 50 hot strengths (MPa) 6.6 6.5 5.4 5.0 5.3 3.5 8.7 percentage elongations (%) 355 340 140 130 330 470 500
Tensile strength when being heated to 200 ℃, (MPa) 4.0 3.9 3.5 3.2 2.6 1.7 3.0 elongations, (%) 175 165 100 95 105 150 170
With design spacing being arranged is that 2 soft printed base plate clamping thickness of 25 μ m copper electrodes are the anisotropic conductive film of 22 μ m, placing thickness at it above (making up and down, the position of copper electrode matches) is teflon (registered trademark of the デ ュ Port Application Co., Ltd.) film of 30 μ m, place the sheet material of preparation in embodiment 1～4, the comparative example 1～3 in the above, be placed in the pressing machine thereafter, from sheet material one side with 40kgf/cm 2The pressure pressing be heated to 400 ℃ pressurizing mold, 6 seconds of pressing.Carry out this stitching operation repeatedly, measure until the number of times that can't anisotropic conductive film be heating and curing with the pressure of homogeneous.This number of times is confirmed by the conducting of soft printed base plate copper electrode up and down.It the results are shown in table 2.
Table 2
Durability times (inferior)
Embodiment ????1 ????87
????2 ????110
????3 ????62
????4 ????55
Comparative example ????1 ????36
????2 ????6
????3 Anisotropic conductive film is not solidified

Claims (11)

1, a kind of heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding, it is characterized in that: it is for to be shaped to sheet with rubber composition, make its heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding that is solidified to form, above-mentioned rubber composition is a organopolysiloxane more than 200 by (A) mean polymerisation degree: dewater exceptionally volatile component of 100 weight parts, (B) is that the following and BET specific surface area of 0.5 weight % is 100m 2The carbon black that/g is above: 10～100 weight parts, and (C) solidifying agent form.
2, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 1 record, wherein, above-mentioned rubber composition contains the cerium oxide of 0.1～5 weight part.
3, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 1 or 2 records, wherein, above-mentioned rubber composition also contains the thermal conductivity weighting agent of 50～2,000 weight part.
4, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 3 record, wherein, above-mentioned thermal conductivity weighting agent is at least a powder of choosing among thermal conductivity inorganic powder or metal-powder.
5, the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of putting down in writing according to claim 4, wherein, at least a inorganic powder of above-mentioned inorganic powder among aluminum oxide, aluminium nitride, aluminium hydroxide, zinc oxide, magnesium oxide, crystallinity silicon-dioxide and boron nitride, choosing.
6, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 4 or 5 records, wherein, above-mentioned metal-powder is at least a metal-powder of choosing among aluminium, iron, silver, copper and nickel.
7, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 1 record, wherein, (A) organopolysiloxane of composition becomes composition formula to represent with following average group,
R nSiO (4-n)/2(1) formula, n is 1.95～2.05 positive number, R represents to replace or unsubstituted monovalent hydrocarbon group.
8, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 7 record, wherein, the viscosity of above-mentioned organopolysiloxane in the time of 25 ℃ is more than the 300cs.
9, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 7 record, wherein, the main chain of above-mentioned organopolysiloxane is made up of the dimethyl siloxane units that contains at least one group of choosing among vinyl, phenyl, the trifluoro propyl.
10, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of any one record in the claim 1～9, wherein, the thermal conductivity of above-mentioned rubber composition is more than the 0.5W/mK.
11, according to the heat-resisting heat conductivity silicone rubber sheet for thermocompression bonding of claim 1 record, wherein, the thickness of sheet material is in the scope of 0.1～10mm.
CNB031205569A 2002-03-12 2003-03-12 Silicon rebber sheet material with heat-resistance heat-conductivity for thermocopression seal Expired - Fee Related CN1233747C (en)

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JP2002066422A JP4086222B2 (en) 2002-03-12 2002-03-12 Heat resistant and heat conductive silicone rubber sheet for thermocompression bonding

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CN102061093A (en) * 2010-11-18 2011-05-18 东莞市耀盛硅材料科技有限公司 High-temperature resistant silicon rubber and preparation method thereof
CN100999607B (en) * 2006-01-11 2011-10-26 信越化学工业株式会社 Electroconductive rubber composition
CN101724271B (en) * 2008-10-22 2013-02-06 信越化学工业株式会社 Silicone rubber sheet for thermocompression bonding
CN104371329A (en) * 2014-06-26 2015-02-25 张庆成 Oxide-containing high-molecular carbon paste and preparation method for heating material with PTC effect
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