WO2019142688A1 - 熱伝導性薄膜状硬化物及びその製造方法、ならびに熱伝導性部材 - Google Patents
熱伝導性薄膜状硬化物及びその製造方法、ならびに熱伝導性部材 Download PDFInfo
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- WO2019142688A1 WO2019142688A1 PCT/JP2019/000139 JP2019000139W WO2019142688A1 WO 2019142688 A1 WO2019142688 A1 WO 2019142688A1 JP 2019000139 W JP2019000139 W JP 2019000139W WO 2019142688 A1 WO2019142688 A1 WO 2019142688A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
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- 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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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/48—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
- C08G77/50—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms by carbon linkages
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5425—Silicon-containing compounds containing oxygen containing at least one C=C bond
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- 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
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
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- C09J2483/00—Presence of polysiloxane
Definitions
- the present invention is a thermally conductive material that can be interposed between the thermal interface of a heat generating element and a heat dissipation member such as a heat sink or a circuit board for cooling a thermally conductive cured product, particularly a heat generating element.
- the present invention relates to a thin film cured product, a method for producing the same, and a thermally conductive member.
- a thermally conductive material is used as a heat sink for a heat sink using a metal plate having a high thermal conductivity such as aluminum or copper, or a cooling member such as a housing in order to suppress the temperature rise of the semiconductor during operation.
- the heat generated from the semiconductor is transmitted to the outside through the temperature difference with the atmosphere.
- a thermally conductive sheet having an insulating property is often used as the thermally conductive material.
- a cooling member and a semiconductor, a screw, a clip, etc. are used. Further, the thermally conductive sheet interposed therebetween is also fixed by pressing with a screw or a clip.
- a thermally conductive silicone adhesive tape using silicone as a polymer is known from the viewpoint of its heat resistance, cold resistance and durability (Patent Document 4: Patent No. 5283346).
- the pressure-sensitive adhesive tape has a problem in that the adhesive strength is particularly poor at high temperatures as compared with general adhesive materials.
- coating becomes complicated depending on the heat-hardening type adhesive agent, the subject that it was inferior to workability
- the present invention has been made in view of the above circumstances, and is a cured product of a silicone composition which can be easily handled even in a single layer or thin film, and has good transferability to a member and handleability after peeling. It is an object of the present invention to provide a thermally conductive thin film-like cured product which exhibits good adhesive strength with a heat-generating element, a method for producing the same, and a thermally conductive member using the same.
- the present inventors have blended a thermally conductive filler into an addition reaction-curable silicone rubber composition, and also incorporated an appropriate amount of silicone resin and a specific adhesive component.
- the thermally conductive thin film-like cured product of the composition exhibits good transferability to a member and handleability after peeling, as shown in the examples described later, and exhibits good adhesive strength with the heat-generating element even at high temperatures.
- the heat conductive member is very effective as a heat conductive member for transmitting heat generated from the heat generating element to the heat radiating member by being interposed between the heat generating element and the heat radiating member. It is
- the present invention provides the following thermally conductive thin film cured product, a method for producing the same, and a thermally conductive member.
- A Organopolysiloxane having at least two alkenyl groups in one molecule: 100 parts by mass, (B) thermally conductive filler: 200 to 2,000 parts by mass, (C) an organohydrogenpolysiloxane having hydrogen atoms directly bonded to at least two silicon atoms in one molecule: (number of hydrogen atoms directly bonded to silicon atoms of component (c)) / (component (a)) The number of alkenyl groups in the group) is 0.5 to 50.0, (D) Platinum group metal based compound: 0.1 to 1,000 ppm (mass) of platinum group metal based element with respect to the component (a), (E) Reaction control agent: necessary amount, (F) Silicone resin: 50 to 300 parts by mass, and (g) an adhesive component selected from the following (g-1) and (g-2):
- R 1 3 SiO 1/2 units (R 1 is a monovalent hydrocarbon radical unsubstituted or substituted free of aliphatic unsaturation.) A and the SiO 4/2 units, (R 1 3 SiO 1/2 units) / thermal conductivity thin film-like cured product of the molar ratio represented by (SiO 4/2 units), wherein 1 is a silicone resin is 0.1 to 3.0. 3.
- the silicone composition has the following (h-1) and (h-2) (H-1): The following general formula (2) R 2 a R 3 b Si (OR 4 ) 4-ab (2) (Wherein, R 2 is independently an alkyl group having 6 to 15 carbon atoms, R 3 is independently an unsubstituted or substituted monovalent hydrocarbon group having 1 to 8 carbon atoms, and R 4 is independently Is an alkyl group having 1 to 6 carbon atoms, a is an integer of 1 to 3 and b is an integer of 0 to 2, provided that a + b is an integer of 1 to 3.) Alkoxysilane compound (h-2) represented by the following general formula (3) (Wherein, R 5 is independently an alkyl group having 1 to 6 carbon atoms, and c is an integer of 5 to 100).
- At least one surface treatment agent selected from dimethylpolysiloxanes blocked with a trialkoxy group at one molecular chain end a thermally conductive thin film as described in 1 or 2 containing 0.1 to 40 parts by mass Cured product. 4.
- a thermally conductive member comprising the above-mentioned base material and a thermally conductive thin film-like cured product, wherein the above-mentioned silicone composition is formed into a thin film on a surface release-treated base material for silicone adhesive and cured.
- the treatment component used for surface release treatment is a modified silicone containing a fluorine substituent in the main chain.
- the thermally conductive thin film-like cured product of the present invention has good transferability to a member, and even a single layer or thin film, has good handleability after peeling, and can be easily fixed by adhering to a heat generating element or a heat dissipating member. In addition, it exhibits good adhesive strength with heat-generating elements even at high temperatures.
- the component (a) is an organopolysiloxane having at least two alkenyl groups in one molecule, and can be used singly or in appropriate combination of two or more.
- Specific examples of the component (a) include those represented by the following average structural formulas (4) to (6).
- R 6 is independently an unsubstituted or substituted monovalent hydrocarbon group containing no aliphatic unsaturated bond
- X is an alkenyl group.
- D and e are each 0 or 1 or more positive numbers, and f is 1 or more positive number, g is 2 or more positive number
- unsubstituted or substituted monovalent hydrocarbon group which does not contain an aliphatic unsaturated bond of R 6 for example, methyl group, ethyl group, propyl group, isopropyl group, butyl group, butyl group, isobutyl group, tert-butyl group, pentyl Alkyl group such as neopentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group and dodecyl group, cycloalkyl group such as cyclopentyl group, cyclohexyl group and cycloheptyl group, phenyl group, tolyl group and xylyl group , Aryl groups such as naphthyl group and biphenylyl group, aralkyl groups such as benzyl group, phenylethyl group, phenylpropyl group and methylbenzyl
- substituted or unsubstituted alkyl groups having 1 to 3 carbon atoms such as 3,3,3-trifluoropropyl and cyanoethyl; and unsubstituted or substituted phenyl such as phenyl, chlorophenyl and fluorophenyl. It is a group.
- R 6 may be all the same or different. Unless special characteristics such as solvent resistance are required for R 6 , it is preferable that all methyl groups be selected from the viewpoints of cost, availability, chemical stability, environmental impact and the like.
- alkenyl group for X examples include those having 2 to 8 carbon atoms, such as vinyl group, allyl group, propenyl group, isopropenyl group, butenyl group, hexenyl group, cyclohexenyl group, etc., among which vinyl group, Lower alkenyl groups such as allyl are preferred, and vinyl is more preferred.
- d is a positive number of 0 or 1 or more, preferably 10 ⁇ d ⁇ 10,000, more preferably 50 ⁇ d ⁇ 2,000, and still more preferably 100 ⁇ d ⁇ 1,000.
- e is a positive number of 0 or 1 or more, 0 ⁇ e / (d + e) ⁇ 0.5 is preferable, and 0 ⁇ e / (d + e) ⁇ 0.1 is more preferable.
- f is a positive number of 1 or more, preferably 0 ⁇ f / (d + f) ⁇ 0.5, and more preferably 0 ⁇ f / (d + f) ⁇ 0.1.
- g is a positive number of 2 or more, preferably 0 ⁇ g / (d + g) ⁇ 0.5, and more preferably 0 ⁇ g / (d + g) ⁇ 0.1.
- the organopolysiloxane (A) may be in the form of oil or gum, and may be used alone or in combination of two or more different viscosities.
- the average degree of polymerization is preferably 10 to 100,000, more preferably 100 to 10,000.
- the degree of polymerization can be determined as a polystyrene conversion value in gel permeation chromatography (GPC) analysis using toluene as a developing solvent, and is the number average degree of polymerization (the same applies hereinafter).
- the thermally conductive filler as component (b) is not particularly limited. Specifically, nonmagnetic copper, metals such as aluminum, aluminum oxide (alumina), silica, magnesia, bengala, beryllia, titania, zirconia, etc. Examples thereof include oxides, nitrides such as aluminum nitride, silicon nitride and boron nitride, artificial diamond, silicon carbide and the like. Among them, metals, oxides and nitrides are preferable, and aluminum oxide, boron nitride and aluminum hydroxide are more preferable.
- the average particle size of the thermally conductive filler is preferably 0.1 to 100 ⁇ m, more preferably 0.5 to 50 ⁇ m, and still more preferably 0.5 to 30 ⁇ m. These heat conductive fillers may be used alone or in combination of two or more. It is also possible to use two or more types of particles having different average particle sizes.
- the average particle size is a volume average particle size (MV value) according to microtrack (laser diffraction and confusion method), and can be measured, for example, with a microtrack particle size distribution measuring apparatus MT3300EX (Nikkiso Co., Ltd.) .
- the compounding amount of the component (b) is 200 to 2,000 parts by mass, preferably 500 to 1,500 parts by mass with respect to 100 parts by mass of the component (a).
- the compounding amount of the component (b) is 200 to 2,000 parts by mass, preferably 500 to 1,500 parts by mass with respect to 100 parts by mass of the component (a).
- Organohydrogenpolysiloxanes having hydrogen atoms directly bonded to at least two silicon atoms in one molecule preferably have at least two hydrogen atoms (ie, Si—H groups) directly bonded to silicon atoms in the molecular chain. Has three or more.
- the organohydrogenpolysiloxane of component (c) does not have a phenylene skeleton. Specific examples of such organohydrogenpolysiloxanes include those represented by the following average structural formulas (7) to (9).
- R 7 is independently an unsubstituted or substituted monovalent hydrocarbon group containing no aliphatic unsaturated bond, h is a positive number of 0 or 1 or more, i is a positive number of 2 or more, j is 1 or more positive number, k is 0 or 1 or more positive number)
- examples of the unsubstituted or substituted monovalent hydrocarbon group which does not contain an aliphatic unsaturated bond of R 7 include, for example, methyl group, ethyl group, propyl group, isopropyl group, butyl Alkyl group such as isobutyl group, tert-butyl group, pentyl group, neopentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, dodecyl group, etc., cyclopentyl group, cyclohexyl group, cycloheptyl group etc.
- Aryl group such as alkyl group, phenyl group, tolyl group, xylyl group, naphthyl group, biphenylyl group, etc., benzyl group, phenylethyl group, aralkyl group such as phenylpropyl group, methyl benzyl group etc.
- halogen atom such as fluorine, chlorine or bromine, a cyano group or the like
- 1 to 10 carbon atoms such as 1 to 6 carbon atoms, such as 6,6,6,6-nonafluorohexyl group.
- methyl, ethyl and propyl groups are preferred.
- R 7 may be all identical or different, but is preferably the same substituent as R 6 .
- R 7 is preferably a methyl group in terms of cost, availability, chemical stability, environmental impact, etc. unless special properties such as solvent resistance are required.
- h in the formula is a positive number of 0 or 1 or more, preferably 0 to 500, and more preferably 5 to 100.
- i is a positive number of 2 or more, preferably 2 to 100, more preferably 2 to 50.
- j is a positive number of 1 or more, preferably 1 to 100, more preferably 1 to 50.
- k is a positive number of 0 or more, preferably 0 to 100, more preferably 0 to 50.
- the average polymerization degree of the component (c) is preferably 5 to 100, more preferably 10 to 50.
- the blending amount of the component (c) has a ratio represented by (the number of hydrogen atoms (Si-H group) directly bonded to the silicon atom of the component (c)) / (the number of alkenyl groups of the component (a))
- the amount is 0.5 to 50.0, preferably 1.0 to 30.0, and more preferably 2.0 to 20.0.
- the amount of the Si-H group of the component (c) is less than 0.5 with respect to one alkenyl group in the component (a)
- curing of the formed sheet does not progress so much, and the strength of the formed sheet is insufficient. Problems such as being unable to handle as a molded body occur. If the amount is more than 50.0, the sheet after forming becomes insufficient in tackiness, and there is a problem that it can not fix itself by its own stickiness.
- the component (d) is a platinum group metal compound and can be used singly or in appropriate combination of two or more.
- the platinum group metal based compound (platinum group based curing catalyst) of the component (d) is a catalyst for promoting the addition reaction of the alkenyl group in the component (a) and the Si-H group in the component (c).
- platinum including platinum black
- rhodium platinum group metal simple substance such as palladium
- Platinum chloride, chloroplatinic acid and chloroplatinic acid salt such as Na 2 HPtCl 4 .m'H 2 O (wherein, m 'is an integer of 0 to 6, preferably 0 or 6); Alcohol-modified chloroplatinic acid, complex of chloroplatinic acid and olefin, platinum black, platinum group metal such as palladium supported on a support such as aluminum oxide, silica, carbon, etc., rhodium-olefin complex
- the amount of the component (d) used may be a so-called catalytic amount, and is usually 0.1 to 1,000 ppm (mass) relative to the component (a) in the amount of a platinum group metal-based element, and 0.5 to 200 ppm Preferably, 1.0 to 100 ppm is more preferable.
- the reaction control agent of the component (e) is an addition reaction control agent which adjusts the reaction rate of the components (a) and (c) which proceeds in the presence of the component (d).
- One type alone or two types The above can be used in combination as appropriate.
- the component (e) include acetylene alcohol compounds such as ethynyl methylidene carbinol, amine compounds, phosphorus compounds, sulfur compounds and the like, among which acetylene alcohol compounds are preferable.
- the compounding amount of the component (e) is optional as long as it is a necessary amount capable of adjusting to a desired reaction rate, but 0.01 to 2.0 parts by mass is preferable with respect to 100 parts by mass of the component (a).
- the silicone resin of the component (f) used in the present invention is added to impart tackiness to the cured product of the present invention.
- R 1 is an unsubstituted or substituted monovalent hydrocarbon group containing no aliphatic unsaturated bond, and examples thereof include a methyl group, an ethyl group, a propyl group, an isopropyl group, an isopropyl group, a butyl group, an isobutyl group, an tert-butyl group, and pentyl.
- Alkyl group such as neopentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group and dodecyl group, cycloalkyl group such as cyclopentyl group, cyclohexyl group and cycloheptyl group, phenyl group, tolyl group and xylyl group ,
- An aryl group such as naphthyl group and biphenylyl group, an aralkyl group such as benzyl group, phenylethyl group, phenylpropyl group and methylbenzyl group, and part or all of hydrogen atoms bonded to carbon atoms of these groups
- a halogen atom such as fluorine, chlorine or bromine, a group substituted with a cyano group or the like, for example, a chloromethyl group 2-bromoethyl group, 3-chloropropyl group,
- R 1 may be the same or different from each other, but is preferably the same substituent as R 6 .
- R 1 is preferably a methyl group in terms of cost, availability, chemical stability, environmental impact, etc. unless special properties such as solvent resistance are required.
- the compounding amount of the component (f) is 50 to 300 parts by mass, preferably 60 to 200 parts by mass, and more preferably 70 to 150 parts by mass with respect to 100 parts by mass of the component (a). If the amount of the component (f) added is less than 50 parts by mass and more than 300 parts by mass, desired adhesiveness can not be obtained.
- the component (f) itself is a solid or viscous liquid at room temperature, but can also be used in the state of being dissolved in a solvent. In that case, the amount added to the composition is determined by the amount excluding the solvent.
- the component (g) is an adhesive component selected from the following (g-1) and (g-2), and can be used singly or in appropriate combination of two or more. By blending the component (g) into the composition, the cured product can have good adhesiveness even at high temperatures.
- (G-1) a compound represented by the following general formula (1)
- N is an integer of 1 to 15
- (G-2) an organosilicon compound having 1 to 100 silicon atoms and having at least one phenylene skeleton in one molecule and having a hydrogen atom bonded to at least one silicon atom
- the component (g-1) is a compound represented by the above general formula (1), and n is an integer of 1 to 15, preferably 2 to 10, and more preferably 4 to 10 from the viewpoint of adhesiveness.
- the component (g-2) is an organic having 1 to 100 silicon atoms, having at least one phenylene skeleton in one molecule and having a hydrogen atom (Si-H group) bonded to at least one silicon atom. It is a silicon compound.
- phenylene-based skeleton is intended to include a di- to hexa-valent, particularly bi- to tetra-valent phenylene skeleton or an aromatic polycyclic skeleton such as a naphthalene skeleton or an anthracene skeleton.
- the organic silicon compound has at least one, preferably 1 to 4 phenylene skeleton in one molecule, and at least one, preferably 1 to 20, more preferably 2 to 1 in one molecule.
- Those having about 10 Si—H groups are preferred.
- epoxy group such as glycidoxy group, alkoxysilyl group such as trimethoxysilyl group, triethoxysilyl group, methyldimethoxysilyl group, ester group, acrylic group, methacrylic group, anhydrous carboxy group, isocyanate group, amino group, amide group Etc. may contain one or more functional groups.
- the number of silicon atoms is 1 to 100, preferably 2 to 30, more preferably 2 to 20, and still more preferably 4 to 10.
- the structure is not particularly limited, and linear or cyclic organosiloxane oligomers and organosilicon compounds such as organosilanes can be suitably used.
- R w and R x each represents an unsubstituted or substituted monovalent hydrocarbon group.
- p is 1 to 4
- q is 1 to 50
- r is 0 to 100, preferably q is 1 to 20, and r is 1 to 50.
- Y ′ is a group selected from
- R w and R x are the same as above, p is 1 to 4, q is 1 to 50, r is 0 to 100, preferably q is 1 to 20, and r is 1 to 50.) z is 1 to 50. ]
- the unsubstituted or substituted monovalent hydrocarbon group represented by R w and R x preferably has 1 to 12 carbon atoms, and more preferably 1 to 8 carbon atoms, and is preferably an alkyl group, an aryl group, an aralkyl group, an alkenyl group, etc.
- a substituted monovalent hydrocarbon group those substituted with an alkoxy group, an acryl group, an acryl group, an acryl group, an acryloyl group, an methacryloyl group, an amino group, an alkylamino group or the like can be mentioned.
- an alkoxysilyl group such as a trimethoxysilyl group, a triethoxysilyl group, a methyldimethoxysilyl group, an acryl group, a methacryl group, an ester group, an anhydrous carboxy group
- an organosilicon compound having an isocyanate group, an amino group, an amido group or the like introduced can also be used.
- the content of hydrogen atoms (Si-H groups) to be bonded to silicon atoms of the organosilicon compound of component (g-2) is preferably 0.001 to 0.01 mol / g, more preferably 0. 002 to 0.01 mol / g. From the point of sufficient adhesiveness, 0.001 mol / g or more is preferable, and when it is more than 0.01 mol / g, the organosilicon compound of the (g-2) component may become an unstable substance at room temperature. is there.
- Component (g) is compounded in an amount of 0.1 to 20 parts by weight, preferably 0.5 to 15 parts by weight, and more preferably 1.0 to 10 parts by weight, per 100 parts by weight of component (a). If the amount of the component (g) added is less than 0.1 parts by mass and more than 20 parts by mass, desired adhesiveness can not be obtained.
- the ratio represented by the number of Si—H groups / the number of alkenyl groups is preferably 0.5 to 50.0, and is preferably 1.0 to 30.0. More preferably, an amount of 2.0 to 20.0 is more preferable.
- the silicone composition of the present invention preferably contains one or more surface treatment agents selected from the following (h-1) and (h-2).
- the thermally conductive filler which is the component (b) can be uniformly dispersed in the matrix composed of the component (a) when preparing the silicone composition.
- R 2 is independently an alkyl group having 6 to 15 carbon atoms
- R 3 is independently an unsubstituted or substituted monovalent hydrocarbon group having 1 to 8 carbon atoms
- R 4 is independently Is an alkyl group having 1 to 6 carbon atoms
- a is an integer of 1 to 3
- b is an integer of 0 to 2
- a + b is an integer of 1 to 3.
- Examples of the alkyl group represented by R 2 include hexyl group, octyl group, nonyl group, decyl group, dodecyl group, tetradecyl group and the like.
- the number of carbon atoms of the alkyl group represented by R 2 is in the range of 6 to 15, the wettability of the component (C) is sufficiently improved, the handleability is good, and the low temperature properties of the composition become good. .
- R 3 As the unsubstituted or substituted monovalent hydrocarbon group represented by R 3 , for example, methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, tert-butyl group, pentyl group, neopentyl group, Alkyl group such as hexyl group, heptyl group, octyl group, nonyl group, decyl group, dodecyl group, cycloalkyl group such as cyclopentyl group, cyclohexyl group, cycloheptyl group, phenyl group, tolyl group, xylyl group, naphthyl group, biphenylyl And aryl groups such as benzyl, aralkyl groups such as benzyl, phenylethyl, phenylpropyl and methylbenzyl, and part or all of hydrogen atoms having
- Unsubstituted or substituted alkyl group having 1 to 3 carbon atoms such as methyl group, bromoethyl group, 3,3,3-trifluoropropyl group, cyanoethyl group and the like; unsubstituted group such as phenyl group, chlorophenyl group, fluorophenyl group and the like A substituted phenyl group is mentioned.
- (H-2) The following general formula (3) (Wherein, R 5 is independently an alkyl group having 1 to 6 carbon atoms, and c is an integer of 5 to 100). A dimethylpolysiloxane in which one molecular chain terminal end is blocked with a trialkoxy group, and the alkyl group represented by R 5 is the same as the alkyl group represented by R 4 in the above general formula (2) Can be mentioned.
- either one or both of the (h-1) component and the (h-2) component may be combined.
- the blending amount of the component (h) is preferably 0.1 to 40 parts by mass, and more preferably 1 to 20 parts by mass with respect to 100 parts by mass of the component (a).
- the compounding amount of the (h) component is less than 0.1 parts by mass, it may be difficult to fill the (b) component into the (a) component, and when it exceeds 40 parts by mass, adhesion of the cured product There is a risk that the strength may decrease.
- the silicone composition of the present invention further includes a surface treatment agent for the thermally conductive filler, a pigment / dye for coloring, a flame retardancy imparting agent, and various other additives for improving the function. It is possible to add in the range which does not impair the objective of invention.
- the thermally conductive thin film cured product is obtained, for example, by uniformly mixing the above-mentioned essential components and optional components to obtain a silicone composition, and applying the silicone composition to a substrate, preferably a substrate subjected to surface release treatment. It can be obtained by a manufacturing method including the step of forming into a thin film and curing.
- Examples of the method of forming on the substrate include applying a liquid material on the substrate using a bar coater, a knife coater, a comma coater, a spin coater, etc. Absent.
- the heating temperature condition for heating after molding may be a temperature at which the solvent used volatilizes and the components (a) and (c) can react when the solvent is added, productivity, etc. 60 to 150 ° C. is preferable, and 80 to 150 ° C. is more preferable. If the temperature is less than 60 ° C., the curing reaction is slow and the productivity is deteriorated. If the temperature exceeds 150 ° C., the film used as the substrate may be deformed.
- the curing time is usually 0.5 to 30 minutes, preferably 1 to 20 minutes.
- the thickness of the thermally conductive thin film cured product is 20 to 1,000 ⁇ m, more preferably 30 to 500 ⁇ m. If the molding thickness is less than 20 ⁇ m, the handling may be poor and the tackiness may be reduced. On the other hand, if the molding thickness exceeds 1,000 ⁇ m, the desired thermal conductivity may not be obtained. In addition, when coating and forming, it is also possible to add a solvent such as toluene and xylene for viscosity adjustment.
- a substrate obtained by subjecting a paper or a polyethylene terephthalate (PET) film to a surface release treatment for a silicone adhesive is preferable.
- the thickness of the film is preferably 15 to 100 ⁇ m.
- a surface release treatment component is applied on PET by a gravure coater or a kiss coater.
- the surface release treatment component used for the surface release treatment is preferably a non-dimethyl silicone polymer, and more preferably a modified silicone containing a fluorine substituent such as a perfluoroalkyl group or a perfluoropolyether group in the main chain.
- the perfluoropolyether group can be represented by the following formulas (10) to (12).
- modified silicone having a fluorine substituent examples include X-70-201 and X-70-258 manufactured by Shin-Etsu Chemical Co., Ltd.
- the thermally conductive thin film-like cured product after curing is attached to the surface opposite to the substrate by using the same mold release-treated film as the substrate (film) as a separator film, handling such as transportation and fixed size cut Can be made easier. Under the present circumstances, it is also possible to give light weight of the peeling force of a base film and a separator film by changing the processing amount and kind of mold release agent, and the material of a film with a base film.
- the thermally conductive cured product thus obtained is a thin film by peeling off the separator film or the base material (film) and then attaching it to the heat generating element or the heat radiating member and thereafter peeling the remaining film. However, they can be easily arranged and exhibit excellent heat transfer characteristics.
- 0.7 W / mK or more is preferable and, as for the heat conductivity of thermally conductive thin film cured
- the upper limit is not particularly limited, but may be 5 W / mK or less.
- the measuring method of thermal conductivity is a method of an Example statement.
- the shear bond strength to aluminum at 150 ° C. is preferably 0.5 MPa or more, and the upper limit is not particularly limited, but may be 15 MPa or less, more preferably 1 to 5 MPa.
- the measuring method of the aluminum shear adhesive strength at 150 degrees C is a method of an Example statement.
- a thermally conductive member comprising the above base material and a thermally conductive thin film-like cured product obtained by forming the above silicone composition into a thin film on a base material, preferably a base material subjected to surface release treatment, and curing it be able to.
- component as an addition reaction control agent: Silicone resin toluene solution (nonvolatile content 60%, (R 1 3 SiO 1/2 units: M Units) / (SiO 4/2 unit: Q units), M / Q (molar ratio) 1.15), R 1 Indicates a methyl group) and the amount of silicone resin is indicated by () in the table.
- (H) Component Dimethylpolysiloxane in which one end is capped with a trimethoxysilyl group having an average polymerization degree of 30 represented by the following formula
- ⁇ Molding of hardened material> An appropriate amount of toluene is added to the obtained silicone composition, and surface release treatment (modified silicone containing perfluoroalkyl group in the main chain) is applied on a PET film of 38 ⁇ m thickness, and toluene is volatilized at 80 ° C. It was then allowed to cure at 120 ° C. for 10 minutes to obtain a thermally conductive adhesive tape having a thermally conductive thin film-like cured product having a thickness of 200 ⁇ m.
- surface release treatment modified silicone containing perfluoroalkyl group in the main chain
- Thermal conductivity A thermally conductive adhesive tape was sandwiched between aluminum plates, and after pressure bonding at room temperature / 20 psi / 1 h, the thermal resistance was measured by a laser flash method, and it was derived from the relationship between thickness and thermal resistance.
- Paired aluminum shear adhesive strength A thermally conductive adhesive tape was sandwiched between 10 ⁇ 10 mm square aluminum plates, and after 120 ° C./20 psi / 1 h pressure bonding, the peel shear strength at 150 ° C. was measured.
- the thermally conductive cured product was excellent in transferability and handling after curing, and also in thermal conductivity and adhesive strength at high temperature mounting.
- the thermally conductive filler as the component (b) was 200 parts by mass or less, a desired thermal conductivity could not be obtained.
- Comparative Example 2 since the molar ratio of the hydrogen atom directly bonded to the silicon atom of the organohydrogenpolysiloxane which is the component (c) to the alkenyl group of the component (a) is smaller than 0.5, the handling of the cured product is There was a problem with sex.
- Comparative Example 3 since the silicone resin as the component (f) was less than 50 parts by mass, there was a problem in the transferability of the cured product. In Comparative Examples 4 to 6, since the adhesive component which is the component (g) was not in the range of 0.1 to 20 parts by mass, it was not possible to obtain the desired shear adhesive strength under high temperature. As described above, the present invention provides a thermally conductive cured product which is easy to handle, has excellent transferability to members, and has good adhesive strength at high temperature mounting.
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Abstract
Description
1.(a)1分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン:100質量部、
(b)熱伝導性充填剤:200~2,000質量部、
(c)1分子中に少なくとも2個のケイ素原子に直接結合する水素原子を有するオルガノハイドロジェンポリシロキサン:((c)成分のケイ素原子に直接結合した水素原子の個数)/((a)成分のアルケニル基の個数)が0.5~50.0となる量、
(d)白金族金属系化合物:白金族金属系元素量で(a)成分に対して0.1~1,000ppm(質量)、
(e)反応制御剤:必要量、
(f)シリコーンレジン:50~300質量部、及び
(g)下記(g-1)及び(g-2)から選ばれる接着成分:0.1~20質量部
(g-1)下記一般式(1)で表される化合物
(g-2)1分子中にフェニレン系骨格を少なくとも1個有し、かつ少なくとも1個のケイ素原子と結合する水素原子を有するケイ素原子数1~100の有機ケイ素化合物
を含有するシリコーン組成物を硬化させた熱伝導性薄膜状硬化物。
2.(f)成分が、R1 3SiO1/2単位(R1は脂肪族不飽和結合を含有しない非置換又は置換の1価炭化水素基を示す。)とSiO4/2単位とを含み、(R1 3SiO1/2単位)/(SiO4/2単位)で表されるモル比が0.1~3.0であるシリコーンレジンである1記載の熱伝導性薄膜状硬化物。
3.さらに、シリコーン組成物が、下記(h-1)及び(h-2)
(h-1):下記一般式(2)
R2 aR3 bSi(OR4)4-a-b (2)
(式中、R2は独立に炭素原子数6~15のアルキル基であり、R3は独立に非置換又は置換の炭素原子数1~8の1価炭化水素基であり、R4は独立に炭素原子数1~6のアルキル基であり、aは1~3の整数、bは0~2の整数であり、但しa+bは1~3の整数である。)
で表されるアルコキシシラン化合物
(h-2):下記一般式(3)
で表される分子鎖片末端がトリアルコキシ基で封鎖されたジメチルポリシロキサン
から選ばれる1種以上の表面処理剤:0.1~40質量部を含有する1又は2記載の熱伝導性薄膜状硬化物。
4.(b)成分が、金属、酸化物及び窒化物から選ばれる熱伝導性充填剤である1~3のいずれかに記載の熱伝導性薄膜状硬化物。
5.上記シリコーン組成物を、表面離型処理された基材に薄膜状に成形して硬化させる工程を含む、1~4のいずれかに記載の熱伝導性薄膜状硬化物を製造する製造方法。
6.表面離型処理に用いる処理成分が、フッ素置換基を主鎖に含む変性シリコーンである5記載の製造方法。
7.上記シリコーン組成物を、シリコーン接着剤用の表面離型処理された基材に薄膜状に成形して硬化させた、上記基材と熱伝導性薄膜状硬化物とを有する熱伝導性部材。
8.表面離型処理に用いる処理成分が、フッ素置換基を主鎖に含む変性シリコーンである7記載の熱伝導性部材。
[(a)成分]
(a)成分は1分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサンであり、1種単独で又は2種以上を適宜組み合わせて用いることができる。(a)成分として具体例には、下記平均構造式(4)~(6)で表されるものが挙げられる。
eは0又は1以上の正数であり、0≦e/(d+e)≦0.5が好ましく、0≦e/(d+e)≦0.1がより好ましい。
fは1以上の正数であり、0<f/(d+f)≦0.5が好ましく、0<f/(d+f)≦0.1がより好ましい。
gは2以上の正数であり、0<g/(d+g)≦0.5が好ましく、0<g/(d+g)≦0.1がより好ましい。
(b)成分の熱伝導性充填剤は特に限定されず、具体的には、非磁性の銅、アルミニウム等の金属、酸化アルミニウム(アルミナ)、シリカ、マグネシア、ベンガラ、ベリリア、チタニア、ジルコニア等の酸化物、窒化アルミニウム、窒化ケイ素、窒化ホウ素等の窒化物、人工ダイヤモンド、炭化ケイ素等が挙げられる。中でも、金属、酸化物、窒化物が好ましく、酸化アルミニウム、窒化ホウ素、水酸化アルミニウムがより好ましい。
1分子中に少なくとも2個のケイ素原子に直接結合する水素原子を有するオルガノハイドロジェンポリシロキサンは、分子鎖にケイ素原子に直接結合する水素原子(即ち、Si-H基)を少なくとも2個、好ましくは3個以上有するものである。なお、(c)成分のオルガノハイドロジェンポリシロキサンはフェニレン系骨格を有するものではない。このようなオルガノハイドロジェンポリシロキサンとして、具体的には、下記平均構造式(7)~(9)で表されるものが挙げられる。
(d)成分は白金族金属系化合物であり、1種単独で又は2種以上を適宜組み合わせて用いることができる。(d)成分の白金族金属系化合物(白金族系硬化触媒)は、(a)成分中のアルケニル基と、(c)成分中のSi-H基との付加反応を促進するための触媒であり、ヒドロシリル化反応に用いられる触媒として周知の触媒が挙げられる。その具体例としては、例えば、白金(白金黒を含む)、ロジウム、パラジウム等の白金族金属単体、H2PtCl4・m’H2O、H2PtCl6・m’H2O、NaHPtCl6・m’H2O、KHPtCl6・m’H2O、Na2PtCl6・m’H2O、K2PtCl4・m’H2O、PtCl4・m’H2O、PtCl2、Na2HPtCl4・m’H2O(但し、式中、m’は0~6の整数であり、好ましくは0又は6である。)等の塩化白金、塩化白金酸及び塩化白金酸塩、アルコール変性塩化白金酸、塩化白金酸とオレフィンとのコンプレックス、白金黒、パラジウム等の白金族金属を酸化アルミニウム、シリカ、カーボン等の担体に担持させたもの、ロジウム-オレフィンコンプレックス、クロロトリス(トリフェニルフォスフィン)ロジウム(ウィルキンソン触媒)、塩化白金、塩化白金酸又は塩化白金酸塩とビニル基含有シロキサンとのコンプレックス等が挙げられる。
(e)成分の反応制御剤は、(d)成分の存在下で進行する(a)成分と(c)成分の反応速度を調整する、付加反応制御剤であり、1種単独で又は2種以上を適宜組み合わせて用いることができる。(e)成分の例としては、エチニルメチリデンカルビノール等のアセチレンアルコール化合物、アミン化合物、リン化合物、硫黄化合物等が挙げられるが、この中でもアセチレンアルコール化合物が好ましい。
本発明に用いられる(f)成分のシリコーンレジンは、本発明の硬化物に粘着性を付与させるために添加される。(f)成分としては、R1 3SiO1/2単位(M単位)(R1は脂肪族不飽和結合を含有しない非置換又は置換の1価炭化水素基を示す)とSiO4/2単位(Q単位)とを含み、(R1 3SiO1/2単位)/(SiO4/2単位)で表されるモル比が0.1~3.0のシリコーンレジンが好ましく、0.6~1.4がより好ましく、0.7~1.3がさらに好ましい。上記M/Qが0.1未満の場合、M/Qが3.0を超える場合は、所望の粘着力が得られなくなるおそれがある。
(g)成分は下記(g-1)及び(g-2)から選ばれる接着成分であり、1種単独で又は2種以上を適宜組み合わせて用いることができる。(g)成分を組成物に配合することで、その硬化物が高温下でも良好な接着性を有することができる。
(g-1)下記一般式(1)で表される化合物
(g-2)1分子中にフェニレン系骨格を少なくとも1個有し、かつ少なくとも1個のケイ素原子と結合する水素原子を有するケイ素原子数1~100の有機ケイ素化合物
で示される基、R''は
(Rw,Rxは上記と同様であり、y=1~100である。)
から選ばれる基であり、Y’は
本発明のシリコーン組成物は、下記(h-1)及び(h-2)から選ばれる1種以上の表面処理剤を含有することが好ましい。表面処理剤を配合することで、シリコーン組成物調製の際に、(b)成分である熱伝導性充填材を、(a)成分からなるマトリックス中に均一に分散させることができる。
R2 aR3 bSi(OR4)4-a-b (2)
(式中、R2は独立に炭素原子数6~15のアルキル基であり、R3は独立に非置換又は置換の炭素原子数1~8の1価炭化水素基であり、R4は独立に炭素原子数1~6のアルキル基であり、aは1~3の整数、bは0~2の整数であり、但しa+bは1~3の整数である。)
で表されるアルコキシシラン化合物
で表される分子鎖片末端がトリアルコキシ基で封鎖されたジメチルポリシロキサン
なお、R5で表されるアルキル基は上記一般式(2)中のR4で表されるアルキル基と同種のものが挙げられる。
本発明のシリコーン組成物には、この他に、熱伝導性充填剤の表面処理剤、着色のための顔料・染料、難燃性付与剤、その他機能を向上させるための様々な添加剤を本発明の目的を損なわない範囲で添加することが可能である。
熱伝導性薄膜状硬化物は、例えば、上記必須成分及び任意成分を均一に混合してシリコーン組成物を得て、このシリコーン組成物を、基材、好ましくは表面離型処理された基材に薄膜状に成形して硬化させる工程を含む製造方法で得ることができる。
上記シリコーン組成物を、基材、好ましくは表面離型処理された基材に薄膜状に成形して硬化させた、上記基材と熱伝導性薄膜状硬化物とを有する熱伝導性部材を得ることができる。
(a)成分:平均重合度8,000のジメチルビニル基で両末端封止されたジメチルポリシロキサン
(b)成分:
(b-1)平均粒径1μm:粒状酸化アルミニウム
(b-2)平均粒径1μm:球状酸化アルミニウム
(b-3)平均粒径10μm:球状酸化アルミニウム
(b-4)平均粒径10μm:粒状窒化ホウ素
(b-5)平均粒径45μm:球状酸化アルミニウム
5%塩化白金酸2-エチルヘキサノール溶液
(e)成分:
付加反応制御剤として、エチニルメチリデンカルビノール
(f)成分:
シリコーンレジントルエン溶液(不揮発分60%、(R1 3SiO1/2単位:M単位)/(SiO4/2単位:Q単位)、M/Q(モル比)=1.15)、R1はメチル基)、表中に( )でシリコーンレジンの量を示す。
〈シリコーン組成物の調製〉
(a),(b),(c),(e),(f),(h)成分を品川式万能撹拌機に仕込み、60分間混合し、次いで(d)成分を添加し、均一に混合し、さらに(g)成分を添加してシリコーン組成物を得た。
得られたシリコーン組成物に対して、トルエンを適量添加し、表面離型処理(パーフロロアルキル基を主鎖に含む変性シリコーン)を38μm厚のPETフィルム上に塗布し、80℃でトルエンを揮発させ、続いて120℃・10分で硬化させ、厚さ200μmの熱伝導性薄膜状硬化物を有する熱伝導性粘着テープを得た。
熱伝導性薄膜状硬化物について下記評価を行った。
〇転写性:熱伝導性薄膜状硬化物を、アルミ板に張り付けた際に、所望の密着性が得られるかを評価した。密着性が得られるものを「○」、密着性に難があるものを「×」とした。
〇剥離後の取り扱い性:熱伝導性粘着テープを剥がした後の熱伝導性薄膜状硬化物の手による取り扱い性を本体形状に着目して評価した。取り扱い性の良いものを「○」、取り扱い性に難があるものを「×」とした。
〇熱伝導率:熱伝導性粘着テープをアルミプレートに挟み込み、室温/20psi/1h圧着後、レーザーフラッシュ法で熱抵抗を測定し、厚みと熱抵抗の関係から導いた。
〇対アルミせん断接着強度:熱伝導性粘着テープを10×10mm角のアルミプレートに挟み込み、120℃/20psi/1h圧着後、150℃下での剥離せん断強度を測定した。
比較例1では、(b)成分である熱伝導性充填剤が200質量部以下であるため、所望の熱伝導率を得ることができなかった。
比較例2では、(c)成分であるオルガノハイドロジェンポリシロキサンのケイ素原子に直接結合した水素原子と(a)成分のアルケニル基とのモル比が0.5より小さくなるため、硬化物の取り扱い性に難があった。
比較例3では、(f)成分であるシリコーンレジンが50質量部より少ないため、硬化物の転写性に難があった。
比較例4~6では、(g)成分である接着成分が0.1~20質量部の範囲にないため、所望する高温下でのせん断接着強度を得ることができなかった。
以上述べてきたように、本発明は取り扱い性が容易であり、部材への転写性にも優れ、高温実装時に良好な接着強度を有する熱伝導性硬化物を与える。
Claims (8)
- (a)1分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン:100質量部、
(b)熱伝導性充填剤:200~2,000質量部、
(c)1分子中に少なくとも2個のケイ素原子に直接結合する水素原子を有するオルガノハイドロジェンポリシロキサン:((c)成分のケイ素原子に直接結合した水素原子の個数)/((a)成分のアルケニル基の個数)が0.5~50.0となる量、
(d)白金族金属系化合物:白金族金属系元素量で(a)成分に対して0.1~1,000ppm(質量)、
(e)反応制御剤:必要量、
(f)シリコーンレジン:50~300質量部、及び
(g)下記(g-1)及び(g-2)から選ばれる接着成分:0.1~20質量部
(g-1)下記一般式(1)で表される化合物
(nは1~15の整数である。)
(g-2)1分子中にフェニレン系骨格を少なくとも1個有し、かつ少なくとも1個のケイ素原子と結合する水素原子を有するケイ素原子数1~100の有機ケイ素化合物
を含有するシリコーン組成物を硬化させた熱伝導性薄膜状硬化物。 - (f)成分が、R1 3SiO1/2単位(R1は脂肪族不飽和結合を含有しない非置換又は置換の1価炭化水素基を示す。)とSiO4/2単位とを含み、(R1 3SiO1/2単位)/(SiO4/2単位)で表されるモル比が0.1~3.0であるシリコーンレジンである請求項1記載の熱伝導性薄膜状硬化物。
- さらに、シリコーン組成物が、下記(h-1)及び(h-2)
(h-1):下記一般式(2)
R2 aR3 bSi(OR4)4-a-b (2)
(式中、R2は独立に炭素原子数6~15のアルキル基であり、R3は独立に非置換又は置換の炭素原子数1~8の1価炭化水素基であり、R4は独立に炭素原子数1~6のアルキル基であり、aは1~3の整数、bは0~2の整数であり、但しa+bは1~3の整数である。)
で表されるアルコキシシラン化合物
(h-2):下記一般式(3)
(式中、R5は独立に炭素原子数1~6のアルキル基であり、cは5~100の整数である。)
で表される分子鎖片末端がトリアルコキシ基で封鎖されたジメチルポリシロキサン
から選ばれる1種以上の表面処理剤:0.1~40質量部を含有する請求項1又は2記載の熱伝導性薄膜状硬化物。 - (b)成分が、金属、酸化物及び窒化物から選ばれる熱伝導性充填剤である請求項1~3のいずれか1項記載の熱伝導性薄膜状硬化物。
- (a)1分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン:100質量部、
(b)熱伝導性充填剤:200~2,000質量部、
(c)1分子中に少なくとも2個のケイ素原子に直接結合する水素原子を有するオルガノハイドロジェンポリシロキサン:((c)成分のケイ素原子に直接結合した水素原子の個数)/((a)成分のアルケニル基の個数)が0.5~50.0となる量、
(d)白金族金属系化合物:白金族金属系元素量で(a)成分に対して0.1~1,000ppm(質量)、
(e)反応制御剤:必要量、
(f)シリコーンレジン:50~300質量部、
(g)下記(g-1)及び(g-2)から選ばれる接着成分:0.1~20質量部
(g-1)下記一般式(1)で表される化合物
(nは1~15の整数である。)
(g-2)1分子中にフェニレン系骨格を少なくとも1個有し、かつ少なくとも1個のケイ素原子と結合する水素原子を有するケイ素原子数1~100の有機ケイ素化合物
を含有するシリコーン組成物を、表面離型処理された基材に薄膜状に成形して硬化させる工程を含む、請求項1~4のいずれか1項記載の熱伝導性薄膜状硬化物を製造する製造方法。 - 表面離型処理に用いる処理成分が、フッ素置換基を主鎖に含む変性シリコーンである請求項5記載の製造方法。
- (a)1分子中に少なくとも2個のアルケニル基を有するオルガノポリシロキサン:100質量部、
(b)熱伝導性充填剤:200~2,000質量部、
(c)1分子中に少なくとも2個のケイ素原子に直接結合する水素原子を有するオルガノハイドロジェンポリシロキサン:((c)成分のケイ素原子に直接結合した水素原子の個数)/((a)成分のアルケニル基の個数)が0.5~50.0となる量、
(d)白金族金属系化合物:白金族金属系元素量で(a)成分に対して0.1~1,000ppm(質量)、
(e)反応制御剤:必要量、
(f)シリコーンレジン:50~300質量部、及び
(g)下記(g-1)及び(g-2)から選ばれる接着成分:0.1~20質量部
(g-1)下記一般式(1)で表される化合物
(nは1~15の整数である。)
(g-2)1分子中にフェニレン系骨格を少なくとも1個有し、かつ少なくとも1個のケイ素原子と結合する水素原子を有するケイ素原子数1~100の有機ケイ素化合物
を含有するシリコーン組成物を、シリコーン接着剤用の表面離型処理された基材に薄膜状に成形して硬化させた、上記基材と熱伝導性薄膜状硬化物とを有する熱伝導性部材。 - 表面離型処理に用いる処理成分が、フッ素置換基を主鎖に含む変性シリコーンである請求項7記載の熱伝導性部材。
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| CN201980008634.2A CN111630084B (zh) | 2018-01-17 | 2019-01-08 | 导热性薄膜状固化物及其制造方法以及导热性构件 |
| JP2019566420A JP7088215B2 (ja) | 2018-01-17 | 2019-01-08 | 熱伝導性薄膜状硬化物及びその製造方法、ならびに熱伝導性部材 |
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| JP7661275B2 (ja) | 2022-05-11 | 2025-04-14 | 信越化学工業株式会社 | 熱伝導性シリコーン接着テープ用組成物及び熱伝導性シリコーン接着テープ |
| WO2024154455A1 (ja) * | 2023-01-16 | 2024-07-25 | 信越化学工業株式会社 | シート状放熱部材 |
| JP2024100396A (ja) * | 2023-01-16 | 2024-07-26 | 信越化学工業株式会社 | シート状放熱部材 |
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| Publication number | Publication date |
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| JPWO2019142688A1 (ja) | 2021-01-07 |
| CN111630084B (zh) | 2023-06-02 |
| US20200354526A1 (en) | 2020-11-12 |
| TW201940657A (zh) | 2019-10-16 |
| US11359111B2 (en) | 2022-06-14 |
| JP7088215B2 (ja) | 2022-06-21 |
| KR102786251B1 (ko) | 2025-03-27 |
| CN111630084A (zh) | 2020-09-04 |
| TWI814766B (zh) | 2023-09-11 |
| PH12020500615A1 (en) | 2021-05-31 |
| KR20200110679A (ko) | 2020-09-24 |
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