WO2023068044A1 - 樹脂組成物およびその硬化物ならびにそれを用いた積層体、静電チャックおよびプラズマ処理装置 - Google Patents
樹脂組成物およびその硬化物ならびにそれを用いた積層体、静電チャックおよびプラズマ処理装置 Download PDFInfo
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- WO2023068044A1 WO2023068044A1 PCT/JP2022/037230 JP2022037230W WO2023068044A1 WO 2023068044 A1 WO2023068044 A1 WO 2023068044A1 JP 2022037230 W JP2022037230 W JP 2022037230W WO 2023068044 A1 WO2023068044 A1 WO 2023068044A1
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
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- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
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- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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Definitions
- the present invention relates to a resin composition that can be suitably used in electronic parts and electronic materials. More particularly, the present invention relates to an adhesive sheet with high thermal conductivity and low elastic modulus even at low temperatures, which is used for heat dissipation materials and the like.
- a plasma processing apparatus that performs plasma processing on a semiconductor wafer is provided with a mounting table on which the wafer is placed inside the vacuum chamber.
- the mounting table is mainly composed of an electrostatic chuck that attracts and holds the wafer and a cooler that controls the temperature of the electrostatic chuck.
- Patent Document 1 mentions a method of etching at an extremely low temperature of -30°C or lower. For this reason, it is necessary to cool the electrostatic chuck by setting the temperature of the cooler to ⁇ 30° C. or less. Silicone-based and acrylic-based adhesive sheets have been widely used to join coolers and electrostatic chucks. High thermal conductivity is required for the purpose of lowering the temperature of the chuck.
- Patent No. 6621882 specification Japanese Unexamined Patent Application Publication No. 2011-151280
- the present invention aims to provide a thermally conductive sheet that has high thermal conductivity by controlling the dispersibility of a thermally conductive filler, has a low elastic modulus in a low temperature range of -30 ° C. or less, and has excellent adhesive strength. aim.
- the gist of the present invention is to provide (A) a polyimide resin containing a siloxane skeleton, (B) an epoxy resin, (C) a siloxane diamine, and (D) a thermally conductive filler. It is a resin composition that
- the dispersibility of the thermally conductive filler is controlled, and while maintaining high thermal conductivity, the elastic modulus is low even in the temperature range of -30 ° C. or lower, and the adhesive strength at -30 ° C. or lower, It is possible to obtain an adhesive sheet which has a high elongation and hardly causes peeling or cracking even in a low temperature range of -30°C or lower.
- the resin composition of the present invention contains (A) a polyimide resin containing a siloxane skeleton, (B) an epoxy resin, (C) a siloxane diamine, and (D) a thermally conductive filler.
- the (A) polyimide resin containing a siloxane skeleton used in the present invention preferably has a weight average molecular weight of 5000 or more. By setting the weight average molecular weight to 5000 or more, the toughness and flexibility of the heat conductive sheet can be improved. Also, the weight average molecular weight is preferably 1,000,000 or less. By setting the weight-average molecular weight to 1,000,000 or less, the dispersibility of (D) the thermally conductive filler can be improved, and the utilization efficiency of the particles can be increased from the viewpoint of improving the thermal conductivity.
- a solution in which polyimide containing a siloxane skeleton is dissolved is used, and a GPC (gel permeation chromatograph) device is used to calculate the weight-average molecular weight in terms of polystyrene.
- GPC gel permeation chromatograph
- the polyimide resin containing a siloxane skeleton in the present invention is desirably solvent-soluble. If it is solvent-soluble, the viscosity can be kept low when preparing the resin composition, and the dispersibility of the thermally conductive filler can be further improved.
- Solvent-soluble includes amide solvents such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, N,N-dimethylformamide, N-vinylpyrrolidone, N,N-diethylformamide, ⁇ -butyrolactone, Methyl monoglyme, methyl diglyme, methyl triglyme, ethyl monoglyme, ethyl diglyme, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether At 25°C, 1 g or more dissolves in 100 g of an organic solvent such as an ether solvent.
- an organic solvent such as an ether solvent.
- the polyimide resin containing a siloxane skeleton in the present invention can be easily obtained mainly by the reaction of a tetracarboxylic dianhydride and a diamine, and the residue of the tetracarboxylic dianhydride and the residue of the diamine have a group.
- the polyimide containing a siloxane skeleton in the present invention has a residue corresponding to a tetracarboxylic dianhydride having a structure represented by the following general formula (1), and the total amount of tetracarboxylic dianhydride residues is It is preferably contained in an amount of 20 mol % or more based on 100 mol %.
- the linearity and rigidity of the polyimide molecular chain are lowered, and the glass transition temperature can be lowered, particularly to -30° C. or lower.
- the glass transition temperature By lowering the glass transition temperature, the elastic modulus at low temperatures can be lowered.
- the content of tetracarboxylic dianhydride residues having a structure represented by the following general formula (1) is 100 mol% of the total amount of tetracarboxylic dianhydride residues. , it is more preferably 30 mol % or more.
- the upper limit is not particularly limited, and 100 mol % is preferable if possible, but about 95 mol % is practical from the viewpoint of improving the handleability of the sheet.
- m represents an integer of 1 or more and 100 or less.
- R 7 and R 8 may be the same or different and represent an alkylene or arylene group having 1 to 30 carbon atoms.
- the arylene group may have a substituent, and although the substituent is not particularly limited, it may be an alkyl group having 1 to 24 carbon atoms.
- R 1 to R 6 may be the same or different and represent an alkyl group having 1 to 30 carbon atoms, a phenyl group or a phenoxy group.
- R 1 to R 6 may be the same or different and represent an alkyl group having 1 to 30 carbon atoms, a phenyl group or a phenoxy group.
- alkyl group having 1 to 30 carbon atoms is not particularly limited, methyl group, ethyl group, propyl group and butyl group are preferred.
- the alkylene group having 1 to 30 carbon atoms is not particularly limited, but methylene group, ethylene group, propylene group and butylene group are preferred.
- the alkyl group and the alkylene group do not need to have a linear structure.
- Y 1 and Y 2 may be the same or different and represent a trivalent hydrocarbon group having 1 to 20 carbon atoms.
- Products corresponding to the tetracarboxylic dianhydride represented by the general formula (1) include X-22-168AS, X-22-168A, X-22-168B and X-22 manufactured by Shin-Etsu Chemical Co., Ltd. -168-P5-B and the like, but are not limited to these.
- tetracarboxylic dianhydrides include, for example, pyromellitic anhydride (PMDA), oxydiphthalic dianhydride (ODPA), 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA).
- tetracarboxylic dianhydrides 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA), 3,3′,4,4′-diphenylsulfonetetracarboxylic dianhydride (DSDA), 2,2′- Bis[(dicarboxyphenoxy)phenyl]propane dianhydride (BSAA), 4,4′-hexafluoroisopropylidene diphthalic anhydride (6FDA), 1,2-ethylenebis(anhydrotrimellitate) (TMEG) ) and other tetracarboxylic dianhydrides. A plurality of these may be used. Examples of tetracarboxylic dianhydrides that can be used in the present invention are not limited to these.
- the (A) polyimide resin containing a siloxane skeleton used in the present invention has a residue corresponding to a diamine having a structure represented by the following general formula (2), and 50 mol when the total amount of diamine residues is 100 mol%. % or more is preferable. Since the siloxane skeleton is highly flexible, an adhesive sheet obtained using a polyimide having such a structure has a low elastic modulus and improved adhesion to the substrate. From the viewpoint of lowering the elastic modulus, the content corresponding to the diamine residue having the structure represented by the following general formula (2) should be 60 mol% or more when the total amount of diamine residues is 100 mol%. is more preferable, and from the viewpoint of compatibility with (B) the epoxy resin, the upper limit is preferably 99 mol% or less, more preferably 95 mol% or less.
- n represents an integer of 1 or more and 100 or less.
- R 7 and R 8 may be the same or different and represent an alkylene or arylene group having 1 to 30 carbon atoms.
- the arylene group may have a substituent, and although the substituent is not particularly limited, it may be an alkyl group having 1 to 24 carbon atoms.
- R 1 to R 6 may be the same or different and represent an alkyl group having 1 to 30 carbon atoms, a phenyl group or a phenoxy group. Although the alkyl group having 1 to 30 carbon atoms is not particularly limited, methyl group, ethyl group, propyl group and butyl group are preferred.
- the alkylene group having 1 to 30 carbon atoms is not particularly limited, but methylene group, ethylene group, propylene group and butylene group are preferred. In addition, the alkyl group and the alkylene group do not need to have a linear structure.
- Examples of products corresponding to the diamine represented by the general formula (2) include X-22-161A, X-22-161B, KF8012, KF8008, X-22-1660B-3 manufactured by Shin-Etsu Chemical Co., Ltd. be done.
- the (A) polyimide resin having a siloxane skeleton used in the present invention preferably contains a diamine residue having a hydroxyl group or a carboxyl group.
- a diamine residue having a hydroxyl group or a carboxyl group By having a diamine residue having a hydroxyl group or a carboxyl group, the reaction with the (B) epoxy resin proceeds and the toughness of the cured film after the curing reaction can be improved.
- a diamine having a carboxyl group is preferably used because it has stronger acidity and can improve the dispersibility of the thermally conductive filler to improve the thermal conductivity.
- the diamine residue having a hydroxyl group or a carboxyl group is preferably contained in an amount of 1 mol % or more when the total amount of diamine residues is 100 mol %. From the viewpoint of improving the flexibility of the adhesive sheet, it is preferably 40 mol % or less, more preferably 30 mol % or less.
- diamine residues with hydroxyl or carboxyl groups include:
- the (A) polyimide resin containing a siloxane skeleton used in the present invention is of course allowed to contain other diamine residues in addition to the residue of the diamine containing the siloxane skeleton.
- diamines include one benzene ring such as 1,4-diaminobenzene, 1,3-diaminobenzene, 2,4-diaminotoluene, 1,4-diamino-2,5-dihalogenobenzene.
- Diamines including, bis(4-aminophenyl) ether, bis(3-aminophenyl) ether, bis(4-aminophenyl) sulfone, bis(3-aminophenyl) sulfone, bis(4-aminophenyl ) methane, bis(3-aminophenyl)methane, bis(4-aminophenyl)sulfide, bis(3-aminophenyl)sulfide, 2,2-bis(4-aminophenyl)propane, 2,2-bis(3 -aminophenyl)propane, 2,2-bis(4-aminophenyl)hexafluoropropane, o-dianisidine, o-tolidine, diamines containing two benzene rings such as tolidinesulfonic acids, 1,4-bis(4 -aminophenoxy)benzene, 1,4-bis(3-aminophenoxy)
- the residues of the tetracarboxylic dianhydride and the residues of the diamine are: 1) less benzene rings, 2) larger molecular weight and bulkier, 3) ether bonds, etc. It is preferable to satisfy either one or a plurality of the number of bent portions. Having such a structure weakens the interaction between molecular chains and improves the solubility of the polyimide in an organic solvent.
- the (A) polyimide resin containing a siloxane skeleton in the present invention may consist only of polyimide structural units, or may be a copolymer having other structures as copolymerization components in addition to polyimide structural units. good too.
- a precursor (polyamic acid structure) of polyimide structural units may be included. A mixture thereof may also be used.
- any of these may be mixed with a polyimide represented by another structure.
- the types and amounts of structures used for copolymerization or mixing are preferably selected within a range that does not impair the effects of the present invention.
- the method for synthesizing (A) a polyimide resin containing a siloxane skeleton used in the present invention is not particularly limited, and it can be synthesized by a known method using a diamine and a tetracarboxylic dianhydride.
- a method of reacting a tetracarboxylic dianhydride and a diamine compound (partially substituted with an aniline derivative) at a low temperature a method of reacting a tetracarboxylic dianhydride with an alcohol to obtain a diester, and then a diamine (a portion of which may be substituted with an aniline derivative) in the presence of a condensing agent, a diester is obtained by reacting a tetracarboxylic dianhydride and an alcohol, and then the remaining two carboxyl groups are converted to an acid chloride.
- a polyimide precursor using a method such as a method of reacting with a diamine (which may be partially substituted with an aniline derivative) and the like, and synthesize it using a known imidization method. can.
- the resin composition of the present invention contains (B) an epoxy resin.
- the epoxy resin is contained, the cross-linking reaction of (A) the polyimide resin containing the siloxane skeleton proceeds, and the toughness of the adhesive sheet is improved, thereby improving the adhesive strength.
- the (B) epoxy resin used in the present invention is preferably an epoxy resin containing a siloxane skeleton from the viewpoint of lowering the elastic modulus of the adhesive sheet after curing and improving the flexibility.
- epoxy resins include X-40-2695B and X-22-2046 manufactured by Shin-Etsu Chemical Co., Ltd.
- the (B) epoxy resin used in the present invention preferably has an epoxy equivalent of 400 g/eq or more from the viewpoint of keeping the cross-linking density of the epoxy resin low after curing the adhesive sheet and lowering the glass transition temperature.
- epoxy resins include YX7105, YX7110, YX7400, YX7400N and JER871 manufactured by Mitsubishi Chemical Corporation, and EXA-4850-150 manufactured by DIC Corporation.
- the (B) epoxy resin used in the present invention is preferably a crystalline epoxy resin from the viewpoint of improving the structural regularity of the adhesive sheet and improving the thermal conductivity.
- a crystalline epoxy resin is an epoxy resin having a mesogenic skeleton such as a biphenyl group, a naphthalene skeleton, an anthracene skeleton, a phenylbenzoate group, and a benzanilide group.
- Products compatible with such epoxy resins include JERYX4000, JERYX4000H, JERYX8800, JERYL6121H, JERYL6640, JERYL6677, and JERYX7399 manufactured by Mitsubishi Chemical Corporation, and NC3000, NC3000H, NC3000L, and CER-3000L manufactured by Nippon Kayaku Co., Ltd. , YSLV-80XY and YDC1312 manufactured by Nippon Steel Chemical Co., Ltd., and HP4032, HP4032D and HP4700 manufactured by DIC Corporation.
- the (B) epoxy resin used in the present invention is preferably an epoxy resin having a fluorene skeleton from the viewpoint of improving the dispersibility of the (D) thermally conductive filler and improving the thermal conductivity.
- epoxy resins include PG100, CG500, CG300-M2, EG200, EG250 manufactured by Osaka Gas Chemicals Co., Ltd., and the like.
- the (B) epoxy resin used in the present invention is preferably a liquid epoxy resin from the viewpoint of lowering the viscosity when the (D) thermally conductive filler is dispersed.
- the liquid epoxy resin is one that exhibits a viscosity of 150 Pa ⁇ s or less at 25° C. and 1.013 ⁇ 10 5 N/m 2 .
- Oxide-modified epoxy resins, glycidylamine-type epoxy resins, and the like are included.
- Products compatible with such epoxy resins include JER827, JER828, JER806, JER807, JER801N, JER802, JER604, JER630, and JER630LSD manufactured by Mitsubishi Chemical Corporation and Epiclon 840S, Epiclon 850S and Epiclon manufactured by DIC Corporation. 830S, Epiclon 705, Epiclon 707, YD127, YD128, PG207N, PG202 manufactured by Nippon Steel Chemical Co., Ltd. and TEPIC-PASB26L, TEPIC-PASB22, TEPIC-VL, TEPIC-FL, TEPIC- manufactured by Nissan Chemical Co., Ltd. UC and the like.
- the epoxy resin (B) used in the present invention may be of one type or may be used in combination of two or more types.
- the content of the epoxy resin is preferably 0.1 parts by weight or more with respect to 100 parts by weight of the polyimide resin (A) containing a siloxane skeleton from the viewpoint of improving the toughness and adhesive strength of the adhesive sheet. 15 parts by weight or less is preferable from the viewpoint of improving the flexibility and keeping the elastic modulus low at low temperatures.
- the resin composition of the present invention contains (C) siloxane diamine.
- This siloxane diamine can act as a curing agent for the (B) epoxy resin.
- the siloxane diamine has a highly flexible siloxane skeleton, and can lower the elastic modulus at low temperatures especially after curing.
- the epoxy resin (B) reacts with the siloxane diamine (C)
- the crosslink density is low and the flexibility is high, so that the shear strain at low temperatures can be increased.
- the siloxane diamine preferably has a structure represented by the general formula (3).
- N is more preferably 6 or more.
- N is preferably 30 or less, more preferably 25 or less, from the viewpoint of improving the crosslink density and increasing the adhesive strength through the curing reaction with the (B) epoxy resin.
- Products corresponding to the diamine represented by general formula (3) include KF8010, X-22-161A and X-22-9409 manufactured by Shin-Etsu Chemical Co., Ltd.
- C The content of siloxane diamine is 5% by weight or more and 20% by weight when the total of (A) a polyimide resin containing a siloxane skeleton, the (B) epoxy resin, and (C) siloxane diamine is 100% by weight.
- the content is preferably 20% by weight or less, more preferably 15% by weight or less.
- N is an integer of 5 or more and 30 or less.
- R 7 and R 8 may be the same or different and represent an alkylene group or an arylene group having 1 to 30 carbon atoms.
- R 1 to R 6 may be the same or different and represent an alkyl group having 1 to 30 carbon atoms, a phenyl group or a phenoxy group.
- the resin composition of the present invention may contain a curing accelerator if necessary.
- the curing accelerators imidazoles, polyhydric phenols, acid anhydrides, amines, hydrazides, polymercaptans, Lewis acid-amine complexes, latent curing agents and the like can be used.
- Examples of imidazoles include Curezol 2MZ, Curezol 2PZ, Curezol 2MZ-A, and Curezol 2MZ-OK (these are trade names, manufactured by Shikoku Kasei Co., Ltd.).
- Examples of polyhydric phenols include SUMILITERESIN PR-HF3, SUMILITERESIN PR-HF6 (trade names, manufactured by Sumitomo Bakelite Co., Ltd.) Kayahard KTG-105, Kayahard NHN (trade names, Nippon Kayaku Co., Ltd.) ), Phenolite TD2131, Phenolite TD2090, Phenolite VH-4150, Phenolite KH-6021, Phenolite KA-1160, Phenolite KA-1165 (all trade names, manufactured by DIC Corporation).
- latent curing accelerator dicyandiamide type latent curing accelerator, amine adduct type latent curing accelerator, organic acid hydrazide type latent curing accelerator, aromatic sulfonium salt type latent curing accelerator, microcapsules type latent curing accelerators and photocurable latent curing accelerators.
- Amicure PN-23, Amicure PN-40, Amicure MY-24, Amicure MY-H (trade names, manufactured by Ajinomoto Fine-Techno Co., Ltd.), Fujicure FXR-1030 (product (manufactured by Fuji Kasei Co., Ltd.).
- organic acid hydrazide-type latent curing accelerators include Amicure VDH and Amicure UDH (both trade names, manufactured by Ajinomoto Fine-Techno Co., Ltd.).
- aromatic sulfonium salt-type latent curing accelerators include San-Aid SI100, San-Aid SI150, and San-Aid SI180 (all trade names, manufactured by Sanshin Chemical Industry Co., Ltd.).
- microcapsule-type latent curing accelerators include those obtained by encapsulating each of the above curing agents with a vinyl compound, a urea compound, or a thermoplastic resin.
- microcapsule-type latent curing accelerators obtained by treating an amine adduct-type latent curing accelerator with isocyanate include Novacure HX-3941HP, Novacure HXA3922HP, Novacure HXA3932HP, and Novacure HXA3042HP (all trade names, manufactured by Asahi Kasei Chemicals Co., Ltd.).
- examples of the photocurable latent curing accelerator include Optomer SP and Optomer CP (both trade names, manufactured by ADEKA Corporation).
- the content is preferably 0.1 parts by weight or more and 35 parts by weight or less with respect to 100 parts by weight of the (B) epoxy resin.
- the resin composition of the present invention contains (D) a thermally conductive filler.
- the thermally conductive filler refers to inorganic particles having a thermal conductivity of 2 W/m ⁇ K or more at 25°C.
- the thermal conductivity can be determined by measuring according to JIS R1611 (2010) after obtaining a sintered body having a thickness of about 1 mm and a porosity of 10% by volume or less.
- JIS R1611 (2010) “7.2 Measurement method” states that "c) bulk density thermal diffusivity is measured according to JIS R1634", but in the measurement of the present invention, "c) bulk density ” refers to the value obtained according to JIS R1634 (1998).
- thermally conductive fillers include inorganic fillers such as carbon black, silica, magnesium oxide, zinc oxide, alumina, aluminum nitride, boron nitride, silicon carbide, and silicon nitride, and copper, aluminum, magnesium, and silver. , zinc, iron, lead and other metal fillers. These fillers may be used alone or in combination of multiple fillers.
- the shape of the filler is not particularly limited, and examples include spherical, spherical, scale-like, flake-like, foil-like, fibrous, needle-like, and the like. From the viewpoint of containing the thermally conductive filler at a high density, it is preferable to use a spherical filler.
- the thermally conductive filler is preferably spherical.
- the viscosity of the resin composition can be lowered to increase the adhesion to the substrate.
- the spherical shape in the present invention means that the primary particles of the thermally conductive filler are observed with a scanning electron microscope (for example, manufactured by Hitachi, Ltd., trade name: FE-SEM S4700), and the primary particles are arbitrarily selected.
- the content of (D) the thermally conductive filler preferably accounts for 50% by volume or more of the cured film.
- the content is 50% by volume or more, the thermal conductivity of the cured film becomes high. More preferably, it is 60% by volume or more.
- the content of the (D) thermally conductive filler is preferably 90% by volume or less, more preferably 80% by volume or less.
- thermogravimetric analysis As a method for calculating the volume content of the filler from the cured film, the following method using thermogravimetric analysis or an equivalent method is used. First, a sheet-shaped cured product is heated to 600 to 900° C. to decompose and volatilize the resin content, the weight of the filler contained is measured, and the weight of the resin is calculated. After that, a method of calculating the volume by dividing by the specific gravity of the filler and the resin can be used.
- the thermally conductive filler preferably contains two or more fillers with different average particle sizes.
- the two or more types may of course have the same composition but different average particle sizes, but may have different compositions.
- the particle size distribution curve shows at least two peaks when the peaks are divided, and the average particle size of the thermally conductive particles constituting one of the peaks is 2 ⁇ m or more, preferably 2.5 ⁇ m or more, From the viewpoint of increasing thermal conductivity, the thickness is more preferably 25 ⁇ m or more. It is preferable that the average particle size of the thermally conductive particles constituting another peak is 1 ⁇ m or less, preferably 0.8 ⁇ m or less.
- the particle size distribution of the thermally conductive filler is measured by a laser diffraction/scattering method, and as a measuring instrument, it is measured by SLD3100 manufactured by Shimadzu Corporation, LA920 manufactured by Horiba, Ltd., or an equivalent product. .
- the (D) thermally conductive filler can be filled at a high density, and a higher thermal conductivity can be obtained.
- the average particle diameter of the peak with the smallest average particle diameter is preferably 0.001 ⁇ m or more, and from the viewpoint of smoothing the surface of the cured film.
- the peak average particle size of the largest average particle size is preferably 100 ⁇ m or less.
- a thermally conductive filler having an average particle size of 1.0 ⁇ m or less is blended, and as having a frequency peak of 2 ⁇ m or more, a thermally conductive filler having an average particle size of 2 ⁇ m or more is blended, and these are mixed.
- a method of forming a resin composition may be mentioned.
- the content of the thermally conductive filler having a peak at 2 ⁇ m or more when the peak is divided is from the viewpoint of obtaining high thermal conductivity (D)
- the volume of the entire thermally conductive filler is 100 volumes %, it is preferably at least 40% by volume, more preferably at least 50% by volume.
- the content is preferably 80% by volume or less, more preferably 70% by volume or less.
- thermally conductive filler it is preferable to use alumina, boron nitride, aluminum nitride, zinc oxide, magnesium oxide, and silica as the thermally conductive filler. This is because the thermal conductivity of the filler is high and the effect of increasing the thermal conductivity of the resin composition is high. It is particularly preferable to use aluminum nitride. Since aluminum nitride has a high thermal conductivity of about 170 W/m ⁇ K as an insulating thermally conductive filler, a higher thermal conductivity can be obtained. Examples of such aluminum nitride particles include FAN-f10, FAN-f30, FAN-f50 and FAN-f80 manufactured by Furukawa Denshi Co., Ltd. and M30, M50 and M80 manufactured by MARUWA.
- particles having an average particle diameter of 2 ⁇ m or more preferably have a specific surface area of 0.2 m 2 /g or more.
- the specific surface area is preferably 0.2 m 2 /g or more, more preferably 0.25 m 2 /g or more.
- the specific surface area can be calculated by measuring the BET specific surface area by the gas adsorption method based on JIS R 1626.
- the mass of the thermally conductive filler is measured, then gas molecules of an inert gas such as nitrogen gas or helium gas are adsorbed, and the BET specific surface area is calculated from the monomolecular adsorption amount.
- the specific surface area is greatly influenced by the size and shape of the primary particles of the thermally conductive filler and the state of aggregation. In order to increase the specific surface area, there is a method of crushing aggregated particles of the thermally conductive filler with a dry jet mill, a crusher, or the like.
- the resin composition of the present invention may contain a surfactant as necessary, which can improve the surface smoothness of the cured film and the adhesion to the substrate.
- a silane coupling agent such as methylmethacryloxydimethoxysilane and 3-aminopropyltrimethoxysilane, a titanium chelating agent, and the like may be contained in the resin composition in an amount of 0.5 to 10% by weight.
- a method for forming a laminate by applying the resin composition of the present invention onto a support will be described.
- a varnish obtained by mixing the resin composition in a solvent is coated on a support, dried, and processed into a sheet.
- the solvent used here may be appropriately selected from those capable of dissolving the above-mentioned components.
- the solvent has a boiling point of 120° C. or less under atmospheric pressure, the solvent can be removed at a low temperature in a short period of time, so that sheet formation is facilitated.
- the method of making the resin composition of the present invention into a varnish is not particularly limited, (A) polyimide resin containing siloxane skeleton, (B) epoxy resin, (C) siloxane diamine, (D) heat conduction After mixing the thermally conductive filler and other components, if necessary, in the above solvent using a propeller stirrer, homogenizer, kneader, etc., (D) from the viewpoint of improving the dispersibility of the thermally conductive filler, a bead mill, Mixing with a ball mill, a three-roll mill, or the like is preferable.
- Methods for applying the varnish to the support include spin coating using a spinner, spray coating, roll coating, screen printing, blade coater, die coater, calendar coater, meniscus coater, bar coater, roll coater, and comma roll coater. , a gravure coater, a screen coater, a slit die coater, and the like.
- a roll coater As the coating machine, a roll coater, a comma roll coater, a gravure coater, a screen coater, a slit die coater, etc. can be used, but the slit die coater is preferably used because the solvent volatilizes less during coating and the coatability is stable. be done.
- the thickness of the sheeted resin composition is not particularly limited, but is preferably in the range of 100 to 500 ⁇ m or less from the viewpoint of adhesion to the substrate, handleability of the adhesive sheet, and heat dissipation.
- Ovens, hot plates, infrared rays, etc. can be used for drying.
- the drying temperature and drying time may be within a range in which the organic solvent can be volatilized, and it is preferable to appropriately set a range such that the adhesive sheet is in an uncured or semi-cured state (B stage state). Specifically, it is preferable to hold the temperature in the range of 40° C. to 120° C. for 1 minute to several tens of minutes. Further, these temperatures may be combined and the temperature may be increased stepwise, for example, heat treatment may be performed at 70° C., 80° C., and 90° C. for 1 minute each.
- the support is not particularly limited, various commercially available films such as polyethylene terephthalate (PET) film, polyphenylene sulfide film, and polyimide film can be used.
- PET polyethylene terephthalate
- polyphenylene sulfide film polyphenylene sulfide film
- polyimide film can be used.
- the bonding surface of the support with the resin composition may be surface-treated with silicone, silane coupling agents, aluminum chelating agents, polyurea, etc., in order to improve adhesion and releasability.
- the thickness of the support is not particularly limited, but from the viewpoint of workability, it is preferably in the range of 10 to 200 ⁇ m.
- the sheet-shaped laminate may have a protective film to protect its surface.
- the sheet surface can be protected from contaminants such as dirt and dust in the atmosphere.
- protective films examples include polyethylene films, polypropylene (PP) films, and polyester films. It is preferable that the protective film has a small adhesive force to the laminate processed into a sheet.
- the resin composition is preferably used in the form of a varnish as described above.
- a film of a resin composition is formed on one surface of a substrate or a member to be bonded using a resin composition varnish.
- Other members include thin plates of metal materials such as copper and SUS (stainless steel), semiconductor devices (the lead frame portion thereof, etc.) to be bonded thereto, and the like.
- the method for applying the varnish-like resin composition include spin coating using a spinner, spray coating, roll coating, screen printing, and the like.
- the coating film thickness varies depending on the coating method, the solid content concentration and viscosity of the resin composition, etc., but it is usually preferable to apply the coating so that the film thickness after drying is 50 ⁇ m or more and 400 ⁇ m or less.
- the substrate coated with the adhesive composition varnish is then dried to obtain an adhesive composition coating. Ovens, hot plates, infrared rays, etc. can be used for drying.
- the drying temperature and drying time may be within a range in which the organic solvent can be volatilized, and it is preferable to appropriately set a range such that the adhesive resin composition film is in an uncured or semi-cured state. Specifically, it is preferable to carry out the heating at a temperature in the range of 50 to 150° C. for 1 minute to several hours.
- the laminated body processed into a sheet shape if it has a protective film, it is peeled off, and the laminated body and another member are faced and bonded together by pressure bonding.
- Crimping may be performed by application of temperature, such as heat press treatment, heat lamination treatment, heat vacuum lamination treatment, or the like.
- the bonding temperature is preferably 40° C. or higher from the viewpoint of adhesion to the substrate and embedding.
- the application temperature is preferably 250° C. or less.
- the support may be peeled off before lamination, or may be peeled off at any point in the thermocompression bonding process or after thermocompression bonding.
- the substrate on which the film of the resin composition thus obtained is formed is thermocompression bonded to the substrate or other members.
- the thermocompression bonding temperature is preferably in the temperature range of 100 to 400°C.
- the pressure during crimping is preferably in the range of 0.01 to 10 MPa.
- the time is preferably 1 second to several hours.
- a cured product may be obtained by applying a temperature of 120°C to 400°C.
- a temperature is selected and the temperature is raised stepwise, or a temperature range is selected and the temperature is raised continuously for 5 minutes to 24 hours.
- heat treatment is performed at 130° C. and 200° C. for 30 minutes each.
- a method of linearly raising the temperature from room temperature to 250° C. over 1 hour can be used.
- the heating temperature is preferably 100° C. or higher and 300° C. or lower, more preferably 120° C. or higher and 200° C. or lower.
- the thus obtained sheet-like resin composition or cured film can reduce the contact heat resistance at the substrate interface and can be cooled to a lower temperature.
- the thermal conductivity of the adhesive sheet at -70°C is preferably 0.8 W/m ⁇ K or more, more preferably 1.0 W/m ⁇ K or more.
- the elastic modulus of the sheet-shaped resin composition or cured film at -50°C is preferably 1 MPa or more and 100 MPa or less, and the elastic modulus at -70°C is also preferably 1 MPa or more and 100 MPa or less. . These are preferably 1 MPa or more, more preferably 2 MPa or more, from the viewpoint of improving the adhesive strength at -50°C. From the viewpoint of reducing the thermal stress of the laminate at low temperatures to prevent peeling and cracking of the sheet-like resin composition or cured film, the pressure is preferably 100 MPa or less, more preferably 50 MPa or less.
- the modulus of elasticity of the cured film can be obtained by the method shown in the section of Examples.
- the sheet-like resin composition or cured film preferably has a shear strain of 2 or more and 10 or less at -50°C.
- the shear strain is the value obtained by dividing the amount of strain until breakage by the thickness of the adhesive sheet when tested according to JIS K 6850 (testing method for tensile shear bond strength of rigid adherends). It is preferably 2 or more, more preferably 3 or more, from the viewpoint of suppressing peeling and cracking by following the dimensional change due to the temperature change of the adhered base material. From the viewpoint of suppressing dimensional change of the sheet-like resin composition or cured film, it is preferably 10 or less, more preferably 8 or less.
- the above shear strain can be obtained by the method shown in the section of Examples.
- the thickness of the cured film can be set arbitrarily, but is preferably 100 ⁇ m or more and 500 ⁇ m or less.
- the resin composition and sheet-shaped laminate of the present invention can be widely used as an adhesive sheet for semiconductor devices, and are particularly suitable for plasma processing equipment used in the semiconductor manufacturing process.
- a substrate to be processed such as a semiconductor wafer is placed on an electrostatic chuck provided in a processing chamber, and a high frequency voltage is applied to the processing chamber in a vacuum environment. , plasma is generated to perform etching or the like.
- An electrostatic chuck is a laminate in which a ceramic plate containing a heater electrode and an electrostatic electrode and a cooling plate having a coolant flow path formed therein are joined with an adhesive sheet.
- the accuracy of semiconductor processing has increased, and etching is performed at a low temperature of ⁇ 30° C.
- the adhesive sheet of the present invention can reduce the thermal resistance at the interface and cool efficiently.
- An adhesive layer is formed by attaching an adhesive sheet to the cooling plate or by applying a varnish of a resin composition and drying it. After that, the ceramic plate is pressure-bonded or heat-pressure-bonded to obtain an electrostatic chuck free from peeling and cracking even at low temperatures.
- ODPA 4,4'-oxydiphthalic dianhydride
- X-22-168AS Maleic anhydride-modified polysiloxane at both ends (manufactured by Shin-Etsu Chemical Co., Ltd.)
- X-22-168A Maleic anhydride-modified polysiloxane at both ends (manufactured by Shin-Etsu Chemical Co., Ltd.)
- BAHF 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (manufactured by AZ Electronic Materials Co., Ltd.)
- X-22-161A Amine-modified polysiloxane at both ends (manufactured by Shin-Etsu Chemical Co., Ltd.)
- X-22-161B Amine-modified polysiloxane at both ends (manufactured by Shin-Etsu Chemical Co.
- ⁇ Epoxy resin> YX7400N rubber elastic liquid epoxy resin (manufactured by Mitsubishi Chemical Corporation) ⁇ Curing agent> LP7100: Bis (3-aminopropyl) tetramethyldisiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.) KF8010: diaminopolysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.) X-22-161A: diaminopolysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.) X-22-161B: diaminopolysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.) 3,3′-DDS: 3,3′-diaminodiphenylsulfone (manufactured by Wakayama Seika Kogyo Co., Ltd.).
- DAW45 Alumina particles (average particle diameter: 45 ⁇ m, specific surface area: 0.21 m 2 /g, thermal conductivity: 26 W/m K) (manufactured by Denki Kagaku Kogyo Co., Ltd.)
- AA3 Alumina particles (average particle diameter: 3 ⁇ m, specific surface area: 0.60 m 2 /g, thermal conductivity: 20 W/m K) (manufactured by Sumitomo Chemical Co., Ltd.)
- AA04 Alumina particles (average particle diameter: 0.4 ⁇ m, specific surface area: 4.10 m 2 /g, thermal conductivity: 20 W/m K) (manufactured by Sumitomo Chemical Co., Ltd.)
- FAN-30 Aluminum nitride particles (average particle diameter: 30 ⁇ m, specific surface area: 0.15 m 2 /g, thermal conductivity: 170 W/m K) (manufactured by Furukawa Denshi Co., Ltd.
- Triglyme triethylene glycol dimethyl ether.
- NMP N-methyl-2-pyrrolidone
- the weight average molecular weight of was calculated.
- the GPC measurement conditions were as follows: NMP in which LiCl and phosphoric acid were each dissolved at a concentration of 0.05 mol/l was used as the moving layer, and the developing rate was 0.4 ml/min.
- Detector Waters996 System controller: Waters2690 Column oven: Waters HTR-B Thermo controller: Waters TCM Column: TOSOH grade comn Column: THSOH TSK-GEL ⁇ -4000 Column: TOSOH TSK-GEL ⁇ -2500.
- ⁇ Imidization rate of polyimide First, the infrared absorption spectrum of the polymer was measured, and the presence of absorption peaks (near 1780 cm ⁇ 1 and 1377 cm ⁇ 1 ) of the imide structure due to polyimide was confirmed. Next, after heat-treating the polymer at 350° C. for 1 hour, the infrared absorption spectrum was measured again to compare peak intensities near 1377 cm ⁇ 1 before and after the heat treatment. Taking the imidization rate of the polymer after the heat treatment as 100%, the imidization rate of the polymer before the heat treatment was determined.
- ⁇ Average particle size of thermally conductive filler> The filler was dispersed in methanol, and the particle size distribution was measured by a laser diffraction/scattering method using LA920 manufactured by Horiba, Ltd.
- the particle diameter D50 at which the cumulative particle diameter distribution from the small particle diameter side based on the volume is 50% was defined as the average particle diameter.
- ⁇ Content of thermally conductive filler> The volume was calculated by dividing the weight of each component by the specific gravity, and the content of the thermally conductive filler with respect to a total of 100 parts by volume of the polyimide resin, epoxy resin, siloxane diamine, and thermally conductive filler was calculated.
- the resin composition is applied to a PET film having a thickness of 38 ⁇ m using a comma roll coater so that the cured film has a thickness of 250 ⁇ m, and dried at 100 ° C. for 30 minutes. C. for 4 hours to obtain a sheet-like laminate. Thereafter, the PET film was peeled off, and the thermal diffusivity of the cured film was measured using a laser flash method thermal diffusivity measuring device LFA447 manufactured by Netch Co., Ltd. Further, the specific gravity of the cured film was measured by the Archimedes method, and the specific heat of the adhesive sheet was measured by the DSC method. Thermal conductivity was calculated from the obtained measured value by the formula of thermal diffusivity (m 2 /s) ⁇ specific gravity (kg/m 3 ) ⁇ specific heat (J/kg ⁇ K).
- ⁇ Elastic modulus> The PET film of the sheet-like laminate obtained by the above method is peeled off, the sheet is cut into a shape of 30 mm ⁇ 5 mm, and the film is measured with a dynamic viscoelasticity measuring device DVA-200 manufactured by IT Keisoku Control Co., Ltd. was measured.
- the temperature rise rate is 5°C/min
- the measurement frequency is 1Hz
- the storage modulus is measured at each temperature in the range from -100°C to 300°C
- the elastic modulus at -50°C is obtained. rice field.
- ⁇ Shear bond strength/shear strain> The resin composition is coated on a 38 ⁇ m thick PET film using a comma roll coater so that the cured film has a thickness of 250 ⁇ m, and dried at 100 ° C. for 30 minutes. A laminate was obtained. This laminate before curing was cut into a size of 12.5 x 25 mm, laminated on an aluminum plate of 100 x 25 mm and a thickness of 1.6 mm at 60 ° C. and 0.1 MPa, and after peeling off the PET film, Aluminum plates having a size of 100 ⁇ 25 mm and a thickness of 1.6 mm were laminated and heat-pressed at 180° C. and 0.5 MPa for 1 hour.
- ⁇ Cold-heat cycle reliability test> The resin composition is coated on a 38 ⁇ m thick PET film using a comma roll coater so that the cured film has a thickness of 250 ⁇ m, and dried at 100 ° C. for 30 minutes. A laminate was obtained. This laminate before curing was cut to 150 mm, laminated on an aluminum plate having a diameter of 100 mm and a thickness of 3 mm at 60 ° C. and 0.1 MPa, and after peeling off the PET film, an alumina substrate having a diameter of 100 mm and a thickness of 3 mm. was laminated and heat-pressed at 120° C. and 0.5 MPa for 24 hours.
- the laminate thus obtained was observed with an ultrasonic flaw detector FS300 manufactured by Hitachi Power Solutions Co., Ltd. to see if there was any peeled portion. After that, using a thermal shock tester, treatment at -65 ° C. for 30 minutes and 100 ° C. for 30 minutes is treated as one cycle, and after 250 cycles, 500 cycles, and 1000 cycles, there are no cracks in the alumina substrate in the peeling state and appearance. I checked. If delamination or cracking occurs immediately after manufacturing the laminate, describe each phenomenon in the table.In addition, if delamination or cracking is observed in the cycle test, it is at the time of confirmation. The number of cycles at which peeling or cracking was confirmed for the first time was described.
- Example 1 A 300 ml four-necked flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube and a dropping funnel, and under a nitrogen atmosphere, 78.53 g of triglyme and 40.40 g of X-22-168AS were charged and dissolved with stirring at 60°C. rice field. After that, 7.33 g of BAHF and 30.80 g of X-22-161A were added while stirring at 60° C. and stirred for 1 hour. After that, the mixture was heated to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution A (solid concentration: 50.0% by weight). As a result of measuring the weight average molecular weight of the polyimide, it was 28,600, and as a result of measuring the imidization rate, it was 99%.
- Example 2 A 300 ml four-necked flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube and a dropping funnel, and under a nitrogen atmosphere, 87.92 g of triglyme and 40.40 g of X-22-168AS were charged and dissolved with stirring at 60°C. rice field. After that, 4.40 g of BAHF and 43.12 g of X-22-161A were added while stirring at 60° C. and stirred for 1 hour. After that, the mixture was heated to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution B (solid concentration: 50.0% by weight).
- Example 3 A 300 ml four-necked flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube and a dropping funnel, and under a nitrogen atmosphere, 72.98 g of triglyme and 30.30 g of X-22-168AS were charged and dissolved with stirring at 60°C. rice field. After that, 1.10 g of BAHF and 41.58 g of X-22-161A were added while stirring at 60° C. and stirred for 1 hour. After that, the temperature was raised to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution C (solid concentration: 50.0% by weight).
- Example 4 A 300 ml four-necked flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube and a dropping funnel, and under a nitrogen atmosphere, 74.93 g of triglyme and 20.20 g of X-22-168AS were charged and dissolved with stirring at 60°C. rice field. Then, while stirring at 60° C., 0.73 g of BAHF and 54.00 g of X-22-161B were added and stirred for 1 hour. After that, the mixture was heated to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution D (solid concentration: 50.0% by weight).
- Example 5 A 300 ml four-necked flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube, and a dropping funnel, and 68.45 g of triglyme and 40.00 g of X-22-168A were charged under a nitrogen atmosphere, and stirred and dissolved at 60°C. rice field. Then, while stirring at 60° C., 0.73 g of BAHF and 27.72 g of X-22-161A were added and stirred for 1 hour. After that, the temperature was raised to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution E (solid concentration: 50.0% by weight).
- Example 6 A 300 ml four-neck flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube and a dropping funnel, and charged with 83.31 g of triglyme, 20.20 g of X-22-168A, and 6.20 g of ODPA under a nitrogen atmosphere. C. to dissolve with stirring. After that, 1.47 g of BAHF and 55.44 g of X-22-161A were added while stirring at 60° C. and stirred for 1 hour. After that, the temperature was raised to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution F (solid concentration: 50.0% by weight).
- Example 7 A 300 ml four-neck flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube and a dropping funnel, and charged with 72.11 g of triglyme, 4.04 g of X-22-168A, and 11.17 g of ODPA under a nitrogen atmosphere. C. to dissolve with stirring. After that, 1.47 g of BAHF and 55.44 g of X-22-161A were added while stirring at 60° C. and stirred for 1 hour. After that, the temperature was raised to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution G (solid concentration: 50.0% by weight).
- Example 8 0.5 g of YX7400N, 0.1 g of LP7100, and 0.02 g of 2P4MZ were added to 10.8 g of polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred. 12 g of AA04 was added and kneaded repeatedly 5 times with a 3-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 9 0.25 g of YX7400N, 0.35 g of X-22-161A, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred. 18 g of AA3 and 12 g of AA04 were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 10 0.2 g of YX7400N, 0.4 g of X-22-161B, and 0.02 g of 2P4MZ were added to 10.8 g of polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred. 18 g of AA3 and 12 g of AA04 were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 11 0.9 g of YX7400N, 0.9 g of KF8010, and 0.02 g of 2P4MZ were added to 8.4 g of the polyimide solution C (solid content: 4.2 g) obtained in Example 3, and mixed and stirred. 12 g of AA04 was added and kneaded repeatedly 5 times with a 3-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 12 1.5 g of YX7400N, 1.5 g of KF8010, and 0.02 g of 2P4MZ were added to 6.0 g of the polyimide solution C (solid content: 3.0 g) obtained in Example 3, and mixed and stirred. 12 g of AA04 was added and kneaded repeatedly 5 times with a 3-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 13 A viscous liquid resin composition was obtained in the same manner as in Example 3, except that 18 g of AA3 was changed to 18 g of DAW45. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 14 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (5.4 g of solid content) obtained in Example 3, and mixed and stirred. 15 g of AA04 was added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 15 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred, and FAN-30 was added thereto. 16.5 g and 10 g of AA04 were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 16 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (5.4 g of solid content) obtained in Example 3, mixed and stirred, and 30 g of AA04 was added thereto. Then, the mixture was repeatedly kneaded five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 17 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (5.4 g of solid content) obtained in Example 3, mixed and stirred, and 30 g of AA3 was added thereto. Then, the mixture was repeatedly kneaded five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 18 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C obtained in Example 3 (solid content: 5.4 g), mixed and stirred, and 30 g of DAW45 was added thereto. Then, the mixture was repeatedly kneaded five times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 19 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred. 12 g of AA04 was added and kneaded repeatedly 5 times with a 3-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 20 0.3 g of YX7400N, 0.3 g of KF8010 and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (solid content: 5.4 g) obtained in Example 3, and the mixture was stirred.
- FAN-30 was ground in a mortar and pulverized to a specific surface area of 0.26 m 2 /g. 16.5 g of FAN-30 and 10 g of AA04 pulverized in this manner were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition.
- the obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 21 0.3 g of YX7400N, 0.3 g of KF8010 and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (solid content: 5.4 g) obtained in Example 3, and the mixture was stirred.
- FAN-30 was ground in a mortar and pulverized to a specific surface area of 0.36 m 2 /g. 16.5 g of FAN-30 and 10 g of AA04 pulverized in this manner were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition.
- the obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Example 22 0.3 g of YX7400N, 0.3 g of KF8010 and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (solid content: 5.4 g) obtained in Example 3, and the mixture was stirred.
- FAN-30 was ground in a mortar and pulverized to a specific surface area of 0.51 m 2 /g. 16.5 g of FAN-30 and 10 g of AA04 pulverized in this manner were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition.
- the obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Comparative example 1 0.35 g of YX7400N, 0.25 g of 3,3′-DDS, and 0.02 g of 2P4MZ were added to 10.8 g of polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred. 18 g of AA3 and 12 g of AA04 were added to the mixture, and kneaded repeatedly 5 times with a three-roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Comparative example 2 0.6 g of YX7400N and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution C (solid content: 5.4 g) obtained in Example 3, and mixed and stirred, and 18 g of AA3 and 12 g of AA04 were added to obtain 3 bottles. Kneading was repeated five times with a roll mill to obtain a viscous liquid resin composition. The obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
- Comparative example 3 A 300 ml four-necked flask was equipped with a stirrer, a thermometer, a nitrogen inlet tube, and a dropping funnel. After that, 73.25 g of BAHF was added while stirring at 60° C. and stirred for 1 hour. After that, the temperature was raised to 180° C. and stirred for 3 hours, and then cooled to room temperature to obtain a polyimide solution H (solid concentration: 50.0% by weight). As a result of measuring the weight average molecular weight of the polyimide, it was 38,500, and as a result of measuring the imidization rate, it was 99%.
- 0.3 g of YX7400N, 0.3 g of KF8010, and 0.02 g of 2P4MZ were added to 10.8 g of the polyimide solution H obtained by the above method (solid content: 5.4 g), mixed and stirred, and then 18 g of AA3 was added. , and 12 g of AA04 were added and kneaded repeatedly five times with a three-roll mill to obtain a viscous liquid resin composition.
- the obtained resin composition was measured for thermal conductivity, elastic modulus, shear bond strength, shear strain, and thermal cycle reliability test by the methods described above.
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Abstract
Description
さらに本発明の樹脂組成物は必要により硬化促進剤を含有しても良い。(B)エポキシ樹脂と硬化促進剤を組み合わせることにより、エポキシ樹脂の硬化を促進して短時間で硬化させることができる。硬化促進剤としては、イミダゾール類、多価フェノール類、酸無水物類、アミン類、ヒドラジド類、ポリメルカプタン類、ルイス酸-アミン錯体類、潜在性硬化剤などを用いることができる。
ODPA:4,4’-オキシジフタル酸二無水物(マナック(株)製)
X-22-168AS:両末端無水マレイン酸変性ポリシロキサン(信越化学(株)製)
X-22-168A:両末端無水マレイン酸変性ポリシロキサン(信越化学(株)製)
BAHF:2,2-ビス(3-アミノ-4-ヒドロキシフェニル)ヘキサフルオロプロパン(AZエレクトロニックマテリアルズ(株)製)
X-22-161A:両末端アミン変性ポリシロキサン(信越化学(株)製)
X-22-161B:両末端アミン変性ポリシロキサン(信越化学(株)製)。
YX7400N:ゴム弾性液状エポキシ樹脂(三菱化学(株)製)
<硬化剤>
LP7100:ビス(3-アミノプロピル)テトラメチルジシロキサン(信越化学(株)製)
KF8010:ジアミノポリシロキサン(信越化学(株)製)
X-22-161A:ジアミノポリシロキサン(信越化学(株)製)
X-22-161B:ジアミノポリシロキサン(信越化学(株)製)
3,3’-DDS:3,3’―ジアミノジフェニルスルホン(和歌山精化工業(株)製)。
DAW45:アルミナ粒子(平均粒子径:45μm、比表面積:0.21m2/g、熱伝導率:26W/m・K)(電気化学工業(株)製)
AA3:アルミナ粒子(平均粒子径:3μm、比表面積:0.60m2/g、熱伝導率:20W/m・K)(住友化学(株)製)
AA04:アルミナ粒子(平均粒子径:0.4μm、比表面積:4.10m2/g、熱伝導率:20W/m・K)(住友化学(株)製)
FAN-30:窒化アルミニウム粒子(平均粒子径:30μm、比表面積:0.15m2/g、熱伝導率:170W/m・K)(古河電子(株)製)
なお、上記の球状熱伝導性フィラーは、1次粒子の走査型電子顕微鏡による観察によって、それぞれ球状であることを確認した。
UHP-2:窒化ホウ素粒子(平均粒子径:10μm、比表面積:3.8m2/g、熱伝導率:80W/m・K)(昭和電工(株)製)。
2P4MZ:2-フェニル-4-メチルイミダゾール。
トリグライム:トリエチレングリコールジメチルエーテル。
ポリイミドをN-メチル-2-ピロリドン(以下、NMPとする)に溶解した固形分濃度0.1重量%の溶液を用い、下に示す構成のGPC装置Waters2690(Waters(株)製)によりポリスチレン換算の重量平均分子量を算出した。GPC測定条件は、移動層をLiClとリン酸をそれぞれ濃度0.05mol/lで溶解したNMPとし、展開速度を0.4ml/分とした。
検出器:Waters996
システムコントローラー:Waters2690
カラムオーブン:Waters HTR-B
サーモコントローラー:Waters TCM
カラム:TOSOH grard comn
カラム:THSOH TSK-GEL α-4000
カラム:TOSOH TSK-GEL α-2500。
まず、ポリマーの赤外吸収スペクトルを測定し、ポリイミドに起因するイミド構造の吸収ピーク(1780cm-1付近、1377cm-1付近)の存在を確認した。次に、そのポリマーについて、350℃で1時間熱処理した後、再度、赤外吸収スペクトルを測定し、熱処理前と熱処理後の1377cm-1付近のピーク強度を比較した。熱処理後のポリマーのイミド化率を100%として、熱処理前のポリマーのイミド化率を求めた。
フィラーを、メタノール中に分散させて、レーザー回折・散乱法で堀場製作所(株)製のLA920を用いて粒子径分布を測定した。体積を基準とした小粒子径側からの積算粒径分布が50%となる粒子径D50を平均粒子径とした。
(株)マウンテック製の全自動比表面積測定装置Macsorbを用いて、BET流動法にて1点法で測定した。
各成分の重量を比重で割って体積を算出し、ポリイミド樹脂、エポキシ樹脂、シロキサンジアミン、および熱伝導性フィラーの合計100体積部に対する熱伝導性フィラーの含有量を算出した。
樹脂組成物を、厚さ38μmのPETフィルム上にコンマロールコーターを用いて、硬化膜の膜厚が250μmとなるように樹脂組成物を塗布し、100℃で30分間乾燥を行った後、180℃で4時間熱硬化し、シート状の積層体を得た。その後、PETフィルムを剥離し、ネッチ(株)製のレーザーフラッシュ法熱拡散率測定装置LFA447を用いて、硬化膜の熱拡散率を測定した。また、アルキメデス法により硬化膜の比重を測定し、DSC法により接着シートの比熱を測定した。得られた測定値から、熱拡散率(m2/s)×比重(kg/m3)×比熱(J/kg・K)の計算式により熱伝導率を算出した。
上記の方法で得られたシート状の積層体のPETフィルムを剥がし、シートを30mm×5mmの形状にカットして、アイティー計測制御(株)製の動的粘弾性測定装置DVA-200でフィルムの弾性率を測定した。測定条件は、昇温速度を5℃/分、測定周波数を1Hzで測定し、-100℃~300℃までの範囲で各温度での貯蔵弾性率を測定し、-50℃における弾性率を求めた。
樹脂組成物を、厚さ38μmのPETフィルム上にコンマロールコーターを用いて、硬化膜の膜厚が250μmとなるように樹脂組成物を塗布し、100℃で30分間乾燥することで硬化前の積層体を得た。この硬化前の積層体を12.5×25mmにカットして、100×25mmで厚みが1.6mmのアルミ板上に60℃で0.1MPaの条件でラミネートし、PETフィルムを剥離した後、100×25mmで厚みが1.6mmのアルミ板を積層して180℃、0.5MPaで1時間加熱プレスした。その後、JIS K 6850に準拠して、島津製作所(株)製の万能試験機AGX-Vで-50℃の雰囲気下で2mm/分の引っ張り速度でせん断試験をおこない、破断した時の応力をせん断接着強度、せん断歪を測定した。
樹脂組成物を、厚さ38μmのPETフィルム上にコンマロールコーターを用いて、硬化膜の膜厚が250μmとなるように樹脂組成物を塗布し、100℃で30分間乾燥することで硬化前の積層体を得た。この硬化前の積層体を150mmにカットして、φ100mmで厚みが3mmのアルミ板上に60℃で0.1MPaの条件でラミネートし、PETフィルムを剥離した後、φ100mmで厚みが3mmのアルミナ基板を積層して120℃、0.5MPaで24時間加熱プレスした。このようにして得られた積層体を(株)日立パワーソリューションズ製の超音波探傷装置FS300で観察し、剥離部分がないか観察した。その後、冷熱衝撃試験機を用い、-65℃で30分、100℃で30分の処理を1サイクルとして、250サイクル、500サイクル、1000サイクル経過時点の剥離状態や外観でアルミナ基板にクラックがないか確認した。積層体を作製した直後に剥離やクラックが発生しているものは発生したそれぞれの現象を表に記載し、また、サイクル試験において、剥離やクラックが見られた場合は、確認を行った時で初めて剥離やクラックが確認されたサイクル数を記載した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 78.53g、X-22-168AS 40.40gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 7.33g、X-22-161A 30.80gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液A(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、28,600であり、イミド化率を測定した結果、99%であった。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 87.92g、X-22-168AS 40.40gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 4.40g、X-22-161A 43.12gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液B(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、19,400であり、イミド化率を測定した結果、99%であった。このようにして得られたポリイミドB10.8g(固形分5.4g)について、実施例1と同様の方法で表2に記載の各成分と混合し、樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 72.98g、X-22-168AS 30.30gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 1.10g、X-22-161A 41.58gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液C(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、18,800であり、イミド化率を測定した結果、99%であった。このようにして得られたポリイミドC10.8g(固形分5.4g)について、実施例1と同様の方法で表2に記載の各成分と混合し、樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 74.93g、X-22-168AS 20.20gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 0.73g、X-22-161B 54.00gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液D(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、19,200であり、イミド化率を測定した結果、99%であった。このようにして得られたポリイミドD10.8g(固形分5.4g)について、実施例1と同様の方法で表2に記載の各成分と混合し、樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 68.45g、X-22-168A 40.00gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 0.73g、X-22-161A 27.72gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液E(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、16,520であり、イミド化率を測定した結果、99%であった。このようにして得られたポリイミドE10.8g(固形分5.4g)について、実施例1と同様の方法で表2に記載の各成分と混合し、樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 83.31g、X-22-168A 20.20g、ODPA 6.20gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 1.47g、X-22-161A 55.44gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液F(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、23,900であり、イミド化率を測定した結果、99%であった。このようにして得られたポリイミドF10.8g(固形分5.4g)について、実施例1と同様の方法で表2に記載の各成分と混合し、樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 72.11g、X-22-168A 4.04g、ODPA 11.17gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 1.47g、X-22-161A 55.44gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液G(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、30,100であり、イミド化率を測定した結果、99%であった。このようにして得られたポリイミドG10.8g(固形分5.4g)について、実施例1と同様の方法で表2に記載の各成分と混合し、樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.5g、LP7100を0.1g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.25g、X-22-161Aを0.35g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.2g、X-22-161Bを0.4g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C8.4g(固形分4.2g)にYX7400Nを0.9g、KF8010を0.9g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C6.0g(固形分3.0g)にYX7400Nを1.5g、KF8010を1.5g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
AA3 18gをDAW45 18gに変更した以外は、実施例3と同様にして粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌し、これにAA3を22g、AA04を15g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌し、これにFAN-30を16.5g、AA04を10g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌し、これにAA04を30g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌し、これにAA3を30g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌し、これにDAW45を30g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌した。FAN-30を乳鉢ですりつぶし、解砕することで比表面積を0.26m2/gにした。このように解砕したFAN-30を16.5g、AA04を10g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌した。FAN-30を乳鉢ですりつぶし、解砕することで比表面積を0.36m2/gにした。このように解砕したFAN-30を16.5g、AA04を10g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.3g、KF8010を0.3g、2P4MZを0.02g添加して混合撹拌した。FAN-30を乳鉢ですりつぶし、解砕することで比表面積を0.51m2/gにした。このように解砕したFAN-30を16.5g、AA04を10g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.35g、3,3’-DDSを0.25g、2P4MZを0.02g添加して混合撹拌し、これにAA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
実施例3で得られたポリイミド溶液C10.8g(固形分5.4g)にYX7400Nを0.6g、2P4MZを0.02g添加して混合撹拌し、AA3を18g、AA04を12g添加して3本ロールミルで5回繰り返し混練して、粘性液体である樹脂組成物を得た。得られた樹脂組成物について、上記の方法で、熱伝導率、弾性率、せん断接着強度、せん断歪、冷熱サイクル信頼性試験について測定した。
300mlの4つ口フラスコに撹拌機、温度計、窒素導入管および滴下ロートを設置して、窒素雰囲気下、トリグライム 135.3g、ODPA 62.40gを仕込み、60℃で撹拌溶解させた。その後、60℃で撹拌しながらBAHF 73.25gを添加して1時間撹拌した。その後180℃まで昇温させて3時間撹拌した後、室温まで冷却してポリイミド溶液H(固形分濃度50.0重量%)を得た。ポリイミドの重量平均分子量を測定した結果、38,500であり、イミド化率を測定した結果99%であった。
Claims (12)
- (A)シロキサン骨格を含んだポリイミド樹脂、(B)エポキシ樹脂、(C)シロキサンジアミン、および(D)熱伝導性フィラーを含有する、樹脂組成物。
- 前記(D)熱伝導性フィラーが球状であることを特徴とする、請求項1に記載の樹脂組成物。
- 前記(A)シロキサン骨格を含んだポリイミド樹脂は、一般式(1)で示される酸無水物の残基を、テトラカルボン酸二無水物残基の総量を100モル%としたとき20モル%以上含有し、一般式(2)で示されるジアミンの残基を、ジアミン残基の総量を100モル%としたとき50モル%以上含有することを特徴とする、請求項1または2に記載の樹脂組成物。
(一般式(1)中、mは1以上100以下の整数を示す。R7およびR8は同じでも異なっていてもよく、炭素数1~30のアルキレン基またはアリーレン基を示す。アリーレン基は置換基を有していてもよい。R1~R6はそれぞれ同じでも異なっていてもよく、炭素数1~30のアルキル基、フェニル基またはフェノキシ基を示す。Y1およびY2はそれぞれ同じでも異なっていてもよく、炭素数1~20の三価の炭化水素基を示す。)
(一般式(2)中、nは1以上100以下の整数を示す。R7およびR8は同じでも異なっていてもよく、炭素数1~30のアルキレン基またはアリーレン基を示す。R1~R6はそれぞれ同じでも異なっていてもよく、炭素数1~30のアルキル基、フェニル基またはフェノキシ基を示す。) - 前記(D)熱伝導性フィラーは、粒度分布曲線においてピーク分割を行った際に少なくとも2つのピークを示し、そのうち一つのピークを構成する熱伝導性フィラーは平均粒子径が2μm以上であり、またそのうち他の一つのピークを構成する熱伝導性フィラーは平均粒子径が1μm以下である、請求項1~4のいずれかに記載の樹脂組成物。
- 平均粒子径が2μm以上の前記(D)熱伝導性フィラーの比表面積が、0.2m2/g以上であることを特徴とする請求項1~5のいずれかに記載の樹脂組成物。
- 前記(A)シロキサン骨格を含んだポリイミド樹脂、前記(B)エポキシ樹脂、および前記(C)シロキサンジアミンの合計を100重量%とした際に、前記(C)シロキサンジアミンの含有量が5重量%以上20重量%以下であることを特徴とする、請求項1~6のいずれかに記載の樹脂組成物。
- 支持体上に、請求項1~7のいずれかに記載の樹脂組成物が付与された積層体であって、厚みが50μm以上、400μm以下であることを特徴とするシート。
- 請求項1~7のいずれかに記載の樹脂組成物を硬化した硬化物。
- -50℃での弾性率が1MPa以上100MPa以下であって、-50℃でのせん断歪が2以上10以下であることを特徴とする、請求項9に記載の硬化物。
- 冷却プレート、請求項9又は10に記載の硬化物、およびセラミックプレートをこの順に有する積層体を含むことを特徴とする、静電チャック。
- 少なくともプラズマ源、および、請求項11に記載の静電チャックを有する、プラズマ処理装置。
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| US18/699,619 US20240400825A1 (en) | 2021-10-19 | 2022-10-05 | Resin composition, cured product thereof, laminate using same, electrostatic chuck, and plasma processing equipment |
| KR1020247006352A KR20240088682A (ko) | 2021-10-19 | 2022-10-05 | 수지 조성물 및 그 경화물 및 그것을 사용한 적층체, 정전 척 및 플라즈마 처리 장치 |
| CN202280070009.2A CN118119667A (zh) | 2021-10-19 | 2022-10-05 | 树脂组合物及其固化物以及使用了该固化物的叠层体、静电卡盘和等离子体处理装置 |
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| WO2024062923A1 (ja) * | 2022-09-21 | 2024-03-28 | 東レ株式会社 | フィルム、積層体、プラズマ処理装置、及び積層体の製造方法 |
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| JP2011123277A (ja) * | 2009-12-10 | 2011-06-23 | Shin-Etsu Chemical Co Ltd | 光硬化性樹脂組成物、該組成物を用いたフィルム状接着剤及び接着シート |
| JP2014024927A (ja) * | 2012-07-25 | 2014-02-06 | Hitachi Chemical Co Ltd | プリプレグ、これを用いた積層板及び多層プリント配線板 |
| JP2018131590A (ja) * | 2017-02-17 | 2018-08-23 | 日立化成株式会社 | コアレス基板用熱硬化性樹脂組成物、コアレス基板用プリプレグ、コアレス基板、コアレス基板の製造方法及び半導体パッケージ |
| JP2021091783A (ja) * | 2019-12-10 | 2021-06-17 | 東レ株式会社 | 組成物、硬化物、多層シート、放熱部品、並びに電子部品 |
| WO2021192935A1 (ja) * | 2020-03-26 | 2021-09-30 | 株式会社巴川製紙所 | 静電チャック装置、静電チャック装置用スリーブ |
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| JP5422413B2 (ja) | 2010-01-25 | 2014-02-19 | 電気化学工業株式会社 | 放熱部材及びその製造方法 |
| JP6621882B2 (ja) | 2018-08-08 | 2019-12-18 | 東京エレクトロン株式会社 | エッチング装置 |
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2022
- 2022-10-05 CN CN202280070009.2A patent/CN118119667A/zh active Pending
- 2022-10-05 US US18/699,619 patent/US20240400825A1/en active Pending
- 2022-10-05 JP JP2022562652A patent/JPWO2023068044A1/ja active Pending
- 2022-10-05 KR KR1020247006352A patent/KR20240088682A/ko active Pending
- 2022-10-05 WO PCT/JP2022/037230 patent/WO2023068044A1/ja not_active Ceased
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10298536A (ja) * | 1997-04-29 | 1998-11-10 | Occidental Chem Corp | 金属部品をセラミックスに結合する為の接着剤シーラント |
| JP2011123277A (ja) * | 2009-12-10 | 2011-06-23 | Shin-Etsu Chemical Co Ltd | 光硬化性樹脂組成物、該組成物を用いたフィルム状接着剤及び接着シート |
| JP2014024927A (ja) * | 2012-07-25 | 2014-02-06 | Hitachi Chemical Co Ltd | プリプレグ、これを用いた積層板及び多層プリント配線板 |
| JP2018131590A (ja) * | 2017-02-17 | 2018-08-23 | 日立化成株式会社 | コアレス基板用熱硬化性樹脂組成物、コアレス基板用プリプレグ、コアレス基板、コアレス基板の製造方法及び半導体パッケージ |
| JP2021091783A (ja) * | 2019-12-10 | 2021-06-17 | 東レ株式会社 | 組成物、硬化物、多層シート、放熱部品、並びに電子部品 |
| WO2021192935A1 (ja) * | 2020-03-26 | 2021-09-30 | 株式会社巴川製紙所 | 静電チャック装置、静電チャック装置用スリーブ |
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| WO2024062923A1 (ja) * | 2022-09-21 | 2024-03-28 | 東レ株式会社 | フィルム、積層体、プラズマ処理装置、及び積層体の製造方法 |
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| US20240400825A1 (en) | 2024-12-05 |
| TW202317706A (zh) | 2023-05-01 |
| KR20240088682A (ko) | 2024-06-20 |
| JPWO2023068044A1 (ja) | 2023-04-27 |
| CN118119667A (zh) | 2024-05-31 |
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