WO2023189310A1 - 熱伝導性樹脂組成物および組成物を硬化させてなる放熱部材 - Google Patents
熱伝導性樹脂組成物および組成物を硬化させてなる放熱部材 Download PDFInfo
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- WO2023189310A1 WO2023189310A1 PCT/JP2023/008719 JP2023008719W WO2023189310A1 WO 2023189310 A1 WO2023189310 A1 WO 2023189310A1 JP 2023008719 W JP2023008719 W JP 2023008719W WO 2023189310 A1 WO2023189310 A1 WO 2023189310A1
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- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- WIBFFTLQMKKBLZ-SEYXRHQNSA-N n-butyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCC WIBFFTLQMKKBLZ-SEYXRHQNSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- KZAUOCCYDRDERY-UHFFFAOYSA-N oxamyl Chemical compound CNC(=O)ON=C(SC)C(=O)N(C)C KZAUOCCYDRDERY-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- MHVJRKBZMUDEEV-KRFUXDQASA-N sandaracopimaric acid Chemical compound [C@H]1([C@](CCC2)(C)C(O)=O)[C@@]2(C)[C@H]2CC[C@@](C=C)(C)C=C2CC1 MHVJRKBZMUDEEV-KRFUXDQASA-N 0.000 description 1
- YZVSLDRKXBZOMY-KNOXWWKRSA-N sandaracopimaric acid Natural products CC(=C)[C@]1(C)CCC[C@]2(C)[C@H]3CC[C@](C)(C=C)C=C3CC[C@@H]12 YZVSLDRKXBZOMY-KNOXWWKRSA-N 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 229940095070 tetrapropyl orthosilicate Drugs 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 229940093635 tributyl phosphate Drugs 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- GKASDNZWUGIAMG-UHFFFAOYSA-N triethyl orthoformate Chemical compound CCOC(OCC)OCC GKASDNZWUGIAMG-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- CVZWWWLVWNAYQZ-UHFFFAOYSA-J tris(2,2-dimethylpropanoyloxy)stannyl 2,2-dimethylpropanoate Chemical compound [Sn+4].CC(C)(C)C([O-])=O.CC(C)(C)C([O-])=O.CC(C)(C)C([O-])=O.CC(C)(C)C([O-])=O CVZWWWLVWNAYQZ-UHFFFAOYSA-J 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
Definitions
- the present invention relates to a thermally conductive resin composition and a heat dissipating member formed by curing the composition.
- Patent Document 1 discloses a room temperature-curable thermally conductive silicone rubber composition that can be cured at room temperature after applying a liquid material highly filled with a thermally conductive filler to uncured silicone rubber.
- Patent Document 2 discloses a thermally conductive material in which silicone gel contains aluminum oxide powder and zinc oxide powder with controlled particle diameters. Since these products are liquid or gel-like products, they have very good adhesion to a heating body or a heat radiating body, and are therefore suitable. However, since these products are uncured silicone rubber compositions, there is a problem in that the low molecular weight siloxane component and/or cyclic siloxane component volatilizes to a large extent during use. It has often been pointed out that silicone resins have problems in that the volatilization of cyclic siloxane, a low-molecular component, can cause contact failures in electrical parts and read failures in precision equipment such as hard disks.
- Patent Document 3 describes (A-1) a filler component with an average particle size of 0.1 to 2 ⁇ m, (A-2) a filler component with an average particle size of 2 to 20 ⁇ m, and (A-3) a filler component with an average particle size of 20 to 20 ⁇ m.
- a composition containing a 100 ⁇ m filler component, (B) a polyalkylene glycol having a hydrolyzable silyl group, (C) a curing catalyst, and (D) a silane coupling agent is disclosed.
- the component (B) of this product is polyalkylene glycol alone, and although it exhibits flexibility, it has a low heat resistance and sometimes deteriorates when it comes into contact with a high-temperature heat source.
- the present invention not only has high heat conductivity and storage stability, but also has a low possibility of contact failure due to cyclic siloxane, which is considered a problem with conventional technology, and has low viscosity, making operations such as application easy.
- An object of the present invention is to provide a thermally conductive resin composition that can be cured at room temperature, and a heat dissipating member obtained by curing the composition.
- One aspect of the present invention is a thermally conductive resin composition including a binder and a thermally conductive filler, wherein the thermally conductive filler includes at least aluminum oxide and zinc oxide, and the thermally conductive resin It is an object of the present invention to provide a thermally conductive resin composition characterized in that the thermal conductivity after curing of the composition is 3 W/mK or more, and a heat dissipating member obtained by curing the composition.
- the present inventor has completed the present invention as a result of intensive studies to solve the above problems.
- a thermally conductive resin composition according to an embodiment of the present invention is a thermally conductive resin composition containing a binder and a thermally conductive filler, wherein the thermally conductive filler includes at least aluminum oxide and zinc oxide.
- a thermally conductive resin composition characterized in that the thermally conductive resin composition has a thermal conductivity of 3 W/mK or more after curing.
- a heat dissipating member according to an embodiment of the present invention is a heat dissipating member obtained by curing the thermally conductive resin composition according to an embodiment of the present invention while being integrated with a heating element and/or a heat dissipating element. .
- One aspect of the present invention is a thermally conductive resin composition that can have both high thermal conductivity and low viscosity, and has excellent curability and storage stability, and the thermally conductive resin composition comprises: It has the feature of being able to improve contact failure caused by cyclic siloxane, etc., which has been seen as a problem in the prior art.
- the present invention can also contribute to achieving Goal 9 of the Sustainable Development Goals (SDGs) advocated by the United Nations, "Create a foundation for industry and technological innovation.”
- SDGs Sustainable Development Goals
- One aspect of the present invention is a thermally conductive resin composition including a binder and a thermally conductive filler, wherein the thermally conductive filler includes at least aluminum oxide and zinc oxide, and the thermally conductive resin
- a thermally conductive resin composition characterized in that the thermal conductivity after curing of the composition is 2 W/mK or more.
- One aspect of the present invention is a thermally conductive resin composition including a binder and a thermally conductive filler, wherein the thermally conductive filler includes at least aluminum oxide and zinc oxide, and the thermally conductive resin
- a thermally conductive resin composition characterized in that the thermal conductivity after curing of the composition is 3 W/mK or more.
- the thermal conductivity after curing of the thermally conductive resin composition is 3.1 W/mK or more, 3.2 W/mK or more, 3.3 W/mK or more, 3.4 W/mK or more, 3.5 W/mK or more. , 4.0 W/mK or more, 5.0 W/mK or more, 7.0 W/mK or more, 10 W/mK or more, or 20 W/mK or more.
- the upper limit of the thermal conductivity after curing of the thermally conductive resin composition is not limited, and may be 50 W/mK, 40 W/mK, 30 W/mK, 20 W/mK, or 10 W/mK.
- the binder in the present invention may be a curable liquid resin that has a reactive group in its molecule and can be cured by reaction of the reactive group.
- binders include, for example, curable acrylic resins, curable acrylic resins such as curable methacrylic resins, curable polyether resins such as curable polypropylene oxide resins, and curable polyether resins such as curable polypropylene oxide resins.
- curable acrylic resins curable acrylic resins such as curable methacrylic resins
- curable polyether resins such as curable polypropylene oxide resins
- curable polyether resins such as curable polypropylene oxide resins.
- curable polyolefin resins typified by isobutylene resins.
- the binder in the present invention includes, for example, a non-curing acrylic resin, a non-curing acrylic resin such as a non-curing methacrylic resin, a non-curing polypropylene oxide resin, and a non-curing polypropylene oxide resin. It can contain non-curing polyether resins such as resins, non-curing polyolefin resins such as non-curing polyisobutylene resins, and the like.
- the reactive group examples include an epoxy group, a hydrolyzable silyl group, a vinyl group, an acryloyl group, a SiH group, a urethane group, a carbodiimide group, or a combination of a carboxylic anhydride group and an amino group.
- Examples include reactive functional groups.
- the binder of the present invention is preferably a polymer containing a hydrolyzable silanol group or a hydrolyzable silyl group having at least one hydroxyl group or hydrolyzable group on the silicon atom at the end of the polymer.
- these polymers exhibit room-temperature curability and can be cured at room temperature when applied inside electronic materials, and the thermally conductive resin composition after curing has high thermal conductivity and storage stability. This is because it can exhibit heat resistance and durability.
- curable liquid resins it is less likely to cause contamination inside electronic devices due to low molecular weight siloxane, has excellent heat resistance, can optimally control adhesive strength, and can impart toughness to cured products. It is preferable to use a curable acrylic resin or a curable polyether resin. Further, as the non-curing resin used in combination, it is preferable to use a non-curing acrylic resin from the viewpoint of imparting toughness to the resin.
- the curable acrylic resin various known reactive acrylic resins can be used. Among these, it is preferable to use an acrylic oligomer having a reactive group at the molecular end in order to improve heat resistance. Kaneka XMAP manufactured by Kaneka Corporation is known as an example of such a curable acrylic resin.
- curable polyether resins can be used as the curable polyether resin.
- Kaneka MS Polymer manufactured by Kaneka Corporation is known as an example of such a reactive polypropylene oxide resin.
- the binder of the present invention the combined use of a curable acrylic resin and a curable polyether resin imparts heat resistance and toughness to the thermally conductive resin composition, and the thermally conductive resin This is preferred because the adhesive strength of the composition can be controlled.
- non-curing acrylic resin various known non-reactive acrylic resins can be used. Among these, it is preferable to use an acrylic oligomer that does not have a reactive group at the molecular end in order to improve toughness.
- ARUFON registered trademark
- resins other than the present resin may be added to the binder.
- thermally conductive filler it is preferable to use aluminum oxide and zinc oxide as the thermally conductive filler because they can improve thermal conductivity and reduce the viscosity of the thermally conductive resin composition.
- the aluminum oxide contained in the thermally conductive resin composition of the present invention preferably contains first particles having an average particle size D50 of 20 ⁇ m to 40 ⁇ m and second particles having an average particle size D50 of 5 ⁇ m to 19 ⁇ m. .
- the thermal conductivity of the thermally conductive resin composition after curing can be controlled to 3 W/mK or more.
- the average particle diameter D50 of the first particles (first aluminum oxide particles) is set to 25 ⁇ m to 35 ⁇ m
- the average particle diameter D50 of the second particles (second aluminum oxide particles) is set to 9 ⁇ m to 18 ⁇ m.
- the average particle diameter D50 of the first particles may be 20 ⁇ m to 37 ⁇ m, 20 ⁇ m to 35 ⁇ m, 20 ⁇ m to 30 ⁇ m, or 23 ⁇ m to 30 ⁇ m.
- the average particle diameter D50 of the second particles may be 5 ⁇ m to 17 ⁇ m, 5 ⁇ m to 15 ⁇ m, 7 ⁇ m to 15 ⁇ m, or 9 ⁇ m to 12 ⁇ m.
- the content of aluminum oxide contained in the thermally conductive resin composition is 30 to 50 parts by weight for the first particles and 30 parts by weight for the second particles based on 100 parts by weight of the total thermally conductive filler.
- the amount is preferably from 45 parts by weight.
- the thermal conductivity of the thermally conductive composition after curing can be improved.
- the first particles are in an amount of 30 to 45 parts by weight (more specifically, 35 to 45 parts by weight)
- the second particles are is preferably 30 to 40 parts by weight (more specifically, 35 to 40 parts by weight) in order to improve the thermal conductivity of the thermally conductive resin composition after curing.
- the zinc oxide contained in the thermally conductive composition has an average particle size D50 of 0.1 ⁇ m to 3 ⁇ m, which improves the thermal conductivity of the thermally conductive resin composition after curing, and This is preferable for reducing the viscosity of the thermally conductive resin composition.
- the average particle diameter D50 is 0.1 ⁇ m to 1 ⁇ m, so that zinc oxide is finely dispersed inside the thermally conductive resin composition and improves the thermal conductivity of the thermally conductive resin composition after curing. This is preferable in terms of increasing the temperature and suppressing an increase in the viscosity of the thermally conductive resin composition.
- the upper limit of the average particle diameter D50 is not limited, and may be 0.3 ⁇ m, 0.5 ⁇ m, 0.7 ⁇ m, or 0.8 ⁇ m.
- the content of zinc oxide contained in the thermally conductive resin composition is preferably 15 parts by weight to 30 parts by weight based on 100 parts by weight of the total thermally conductive filler. According to the configuration, it is possible to improve the thermal conductivity of the thermally conductive resin composition after curing, and to reduce the viscosity of the thermally conductive resin composition.
- zinc oxide is contained in the thermally conductive resin in an amount of 15 to 25 parts by weight (more specifically, 20 to 25 parts by weight) based on 100 parts by weight of the total thermally conductive filler. It is preferable to be finely dispersed inside the composition to improve the thermal conductivity of the thermally conductive resin composition after curing and to suppress an increase in the viscosity of the thermally conductive resin composition.
- the total content of the thermally conductive filler contained in the thermally conductive resin composition is 90 parts by weight or more based on 100 parts by weight of the thermally conductive resin composition after curing of the thermally conductive resin composition. It is preferable to control the thermal conductivity of 3 W/mK or more, and more preferably 91 parts by weight or more.
- thermally conductive fillers include carbon compounds such as graphite and diamond; metal oxides such as magnesium oxide, beryllium oxide, titanium oxide, and zirconium oxide; boron nitride, aluminum nitride, Metal nitrides such as silicon nitride; Metal carbides such as boron carbide, aluminum carbide, and silicon carbide; Metal hydroxides such as aluminum hydroxide and magnesium hydroxide; Metal carbonates such as magnesium carbonate and calcium carbonate; Crystalline silica; Organic polymer fired products such as acrylonitrile based polymer fired products, furan resin fired products, cresol resin fired products, polyvinyl chloride fired products, sugar fired products, charcoal fired products; Composite ferrite with Zn ferrite; Fe-Al- Si-based ternary alloy; metal powder; etc. can also be used in combination.
- metal oxides such as magnesium oxide, beryllium oxide, titanium oxide, and zirconium oxide
- thermally conductive fillers include silane coupling agents (vinylsilane, epoxysilane, (meth)acrylic silane, isocyanatosilane, chlorosilane, aminosilane, etc.), titanate coupling agents (alkoxytitanate, aminotitanate, etc.), Fatty acids (saturated fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, etc.) saturated fatty acids, etc.), resin acids (abietic acid, pimaric acid, levopimaric acid, neoapitic acid, parastric acid, dehydroabietic acid, isopimaric acid, sandaracopimaric acid, colmic acid, secodehydroabietic acid, dihydroabietic acid, etc.), and Alternatively, the surface may be treated with silicone resin or the like.
- silane coupling agents vinylsilane, epoxysilane, (
- various additives such as a curing catalyst, a heat anti-aging agent, a plasticizer, a thixotropic agent, and a dehydrating agent for curing the thermally conductive resin composition are used depending on the purpose of the thermally conductive resin composition. It may be added as appropriate to the resin composition.
- a curing catalyst for curing the thermally conductive resin composition for example, a carboxylic acid metal salt in which the carbon atom adjacent to the carbonyl group is a quaternary carbon is preferable because it can achieve both good curability and storage stability. .
- carboxylic acid metal salts include tin carboxylate, lead carboxylate, bismuth carboxylate, potassium carboxylate, calcium carboxylate, barium carboxylate, titanium carboxylate, zirconium carboxylate, hafnium carboxylate, vanadium carboxylate, and manganese carboxylate.
- iron carboxylate, cobalt carboxylate, nickel carboxylate, and cerium carboxylate are preferred because of their high catalytic activity.
- tin carboxylate, lead carboxylate, bismuth carboxylate, titanium carboxylate, iron carboxylate, and zirconium carboxylate are more preferred because they have high catalytic activity.
- tin carboxylate is preferred in terms of curability and storage stability.
- carboxylic acids having acid groups of carboxylic acid metal salts are preferred, and examples of the carboxylic acids include bivaric acid, neodecanoic acid, Most preferred are metal salts of versatic acid, 2,2-dimethyloctanoic acid, and 2-ethyl-2,5-dimethylhexanoic acid.
- tin pivalate tin neodecanoate
- tin versatate tin 2,2-dimethyloctanoate
- tin 2-ethyl-2,5-dimethylhexanoate tin 2-ethyl-2,5-dimethylhexanoate
- the carboxylic acid metal salts may be used alone or in combination of two or more.
- the amount of these carboxylic acid metal salts is preferably about 0.1 to 30 parts by weight based on 100 parts by weight of the polymer having a crosslinkable silyl group. If the amount of carboxylic acid metal salt is less than 0.1 parts by weight, the curing speed may be extremely slow, and the curing reaction may be difficult to proceed sufficiently. On the other hand, if the amount of carboxylic acid metal salt exceeds 30 parts by weight, the pot life may become too short, which is not preferable from the viewpoint of workability.
- a thermal aging inhibitor for example, a hindered phenol compound
- hindered phenol compounds include 2,6-di-tert-butyl-4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, mono(or di- or tri)( ⁇ -methyl benzyl)phenol, 2,2'-methylenebis(4ethyl-6-tert-butylphenol), 2,2'-methylenebis(4methyl-6-tert-butylphenol), 4,4'-butylidenebis(3-methyl-6 -tert-butylphenol), 4,4'-thiobis(3-methyl-6-tert-butylphenol), 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, triethylene glycol- Bis-[3-(3-t-butyl-5-methyl-4-hydroxypheny
- the product names of the heat aging inhibitors are Nokrac 224, Nokrac AW, Nokrac B, Nokrac PA, Nokrac ODA, Nokrac AD-F, Nokrac CD, Nokrac TD, Nokrac 200, Nokrac SP, Nokrac SP-N, Nokrac NS.
- the amount of the heat aging inhibitor used is preferably in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the polymer having a crosslinkable silyl group.
- plasticizers include phthalate esters such as dibutyl phthalate, diheptyl phthalate, di(2-ethylhexyl) phthalate, diisodecyl phthalate, butylbenzyl phthalate; dioctyl adipate, dioctyl sebacate, dibutyl sebacate, isodecyl succinate, etc.
- non-aromatic dibasic acid esters such as butyl oleate and methyl acetylrisilinolate; esters of polyalkylene glycols such as diethylene glycol dibenzoate, triethylene glycol dibenzoate, and pentaerythritol ester; Phosphoric acid esters such as dilyphosphate and tributylphosphate; trimellitic acid esters; polystyrenes such as polystyrene and poly- ⁇ -methylstyrene; polybutadiene, polybutene, polyisobutylene, butadiene-acrylonitrile, alkyldiphenyl, partially hydrogenated terphenyl , etc.; polyether polyols such as polyethylene glycol, polypropylene glycol, ethylene oxide-propylene oxide copolymer, polytetramethylene glycol; one or both or all ends of the hydroxyl groups of these polyether polyols are alkyl
- Polyester plasticizers obtained from dibasic acids such as acids and dihydric alcohols such as ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, and dipropylene glycol; including pyromellitic acid esters and acrylic plasticizers.
- dibasic acids such as acids and dihydric alcohols
- examples include vinyl polymers obtained by polymerizing vinyl monomers by various methods, cyclohexanedicarboxylates, dipentaerythritol esters, and the like.
- the present plasticizers may be used alone or in combination of two or more types, but are not necessarily required.
- trimellitic acid esters can increase the thermal conductivity of the thermally conductive composition after curing and improve the heat resistance. This is preferable because it can be done.
- the product names of plasticizers are ADEKASIZER C-8, C-880, C-9N, UL-6, UL-80, UL-100 (all manufactured by ADEKA Corporation), Hexamol DINCH (BASF Corporation). ) is preferably used.
- the thixotropic agent is not particularly limited, but includes, for example, amide wax represented by Disparon (manufactured by Kusumoto Kasei), hydrogenated castor oil, hydrogenated castor oil derivatives, fatty acid derivatives, calcium stearate, aluminum stearate, and stearin.
- Metal soaps such as barium acid, organic compounds such as 1,3,5-tris(trialkoxysilylalkyl) isocyanurate, and inorganic compounds such as calcium carbonate, finely powdered silica, and carbon black surface-treated with fatty acids or resin acids. Examples include compounds.
- Hydrolyzable ester compounds include trialkyl orthoformates such as trimethyl orthoformate, triethyl orthoformate, tripropyl orthoformate, and tributyl orthoformate; trimethyl orthoacetate, triethyl orthoacetate, tripropyl orthoacetate; Trialkyl orthoacetates such as tributyl orthoacetate; and compounds thereof.
- hydrolyzable ester compounds include those having the formula R 4-n SiY n (wherein, Y is a hydrolyzable group, and R is an organic group, which may or may not contain a functional group). n is an integer from 1 to 4, preferably 3 or 4).
- vinyltrimethoxysilane vinyltriethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane, methyltriacetoxysilane, tetramethyl orthosilicate (tetramethoxysilane or Silane compounds such as methyl silicate), tetraethyl orthosilicate (tetraethoxysilane or ethylsilicate), tetrapropyl orthosilicate, tetrabutyl orthosilicate, or partially hydrolyzed condensates thereof, ⁇ -aminopropyltrimethoxysilane, ⁇ -glycidoxy Propyltrimethoxysilane, N-( ⁇ -aminoethyl)- ⁇ -aminopropyltrimethoxysilane, ⁇ -acryloxypropyltrimethoxysilane,
- the dehydrating agent is preferably added to the thermally conductive resin composition in order to improve the storage stability of the thermally conductive resin composition. More specifically, the amount of the dehydrating agent is preferably 0.1 to 30 parts by weight, more preferably 0.3 to 20 parts by weight, and 0.5 to 20 parts by weight, based on 100 parts by weight of the polymer having a crosslinkable silyl group. More preferably 10 parts by weight.
- the thermally conductive resin composition of the present invention can be prepared by mixing the above-mentioned components using a mixing device such as a dough mixer (kneader), gate mixer, planetary mixer, butterfly mixer, disperser, or three rolls. Prepared by.
- a mixing device such as a dough mixer (kneader), gate mixer, planetary mixer, butterfly mixer, disperser, or three rolls.
- the viscosity of the thermally conductive resin composition before curing is determined by measuring the viscosity at 23°C with a No. B viscometer (BSII viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity can be obtained by measuring the viscosity after two rotations at 10 rpm using a No. 7 rotor.
- the viscosity of the thermally conductive resin composition of the present invention is preferably 100 Pa ⁇ s to 600 Pa ⁇ s.
- the thickness of the film obtained from the thermally conductive resin composition can be controlled to a predetermined thickness. Furthermore, since the coating speed of the thermally conductive resin composition is increased, the takt time can be shortened.
- the viscosity of the thermally conductive resin composition before curing is particularly preferably from 150 Pa ⁇ s to 550 Pa ⁇ s.
- the tensile elongation rate of the thermally conductive resin composition after curing can be measured by a method based on ASTM D882.
- the tensile elongation rate of the thermally conductive resin composition of the present invention is preferably 10% or more, particularly preferably 15% or more. Since the thermally conductive resin composition after curing has a high tensile elongation rate, when the thermally conductive resin composition is applied to a base material, cured, and then peeled off, there is no residual peeling and it can be peeled off well. Therefore, it is preferable.
- a heat dissipation member according to one embodiment of the present invention is obtained by curing the thermally conductive resin composition according to one embodiment of the present invention in a state where it is integrated with a heating element and/or a heat dissipation body.
- the thermally conductive resin composition of the present invention has a thermal conductivity of 3 W/mK or more after curing, it can be applied between two objects (for example, between a CPU and a coolant) to transfer the heat from the CPU to the coolant. It can function as a thermally conductive material that conducts heat more efficiently.
- the thermally conductive resin composition of the present invention can be used as a thermal interface for transmitting heat between a heat generating material and a heat spreader or between a heat spreader and a cooling member. Furthermore, the thermally conductive resin composition of the present invention can also be used as a heat spreader itself.
- the heat-generating material examples include, but are not particularly limited to, electronic components such as heat-generating heaters, temperature sensors, arithmetic elements, transistors, and light-emitting elements.
- the cooling member is not particularly limited, but examples of heat dissipation materials include heat sinks such as heat dissipation fins, graphite sheets (graphite films), liquid ceramics, Peltier elements, and the like.
- the thermally conductive resin composition of the present invention is suitably used as a thermally conductive material that dissipates heat from these heat generating materials to a cooling member, etc., and can be used as a heat dissipating material itself. Further, the heat dissipating material may serve both as a heat spreader and a cooling member.
- the thermally conductive resin composition of the present invention can also be used as a heat dissipation material by filling it into a sealing material on a thin base chip in a mobile phone or into a shield can. be.
- the present invention can be configured as follows.
- a thermally conductive resin composition containing a binder and a thermally conductive filler, wherein the thermally conductive filler contains at least aluminum oxide and zinc oxide, and after curing the thermally conductive composition.
- a thermally conductive resin composition having a thermal conductivity of 3 W/mK or more.
- the content of the aluminum oxide contained in the thermally conductive resin composition is such that the content of the first particles is 30 to 50 parts by weight, based on 100 parts by weight of the total thermally conductive filler.
- the content of the zinc oxide contained in the thermally conductive resin composition is 15 parts by weight to 30 parts by weight based on 100 parts by weight of the total thermally conductive filler.
- the thermally conductive resin composition according to any one of [1] to [4].
- thermoly conductive resin composition according to any one of [1] to [5], wherein the binder contains a curable acrylic resin and a curable polyether resin.
- thermoly conductive resin composition according to any one of [1] to [5], wherein the binder contains a non-curing acrylic resin and a curable polyether resin.
- a heat radiating member obtained by curing the thermally conductive resin composition according to any one of [1] to [9] in a state where it is integrated with a heating element and/or a heat radiating element.
- the present invention can be configured as follows.
- a thermally conductive resin composition containing a binder and a thermally conductive filler, wherein the thermally conductive filler contains at least aluminum oxide and zinc oxide, and after curing the thermally conductive composition.
- a thermally conductive resin composition having a thermal conductivity of 3 W/mK or more.
- the content of the aluminum oxide contained in the thermally conductive resin composition is such that the content of the first particles is 30 to 50 parts by weight, based on 100 parts by weight of the total thermally conductive filler.
- the content of the zinc oxide contained in the thermally conductive resin composition is 15 parts by weight to 30 parts by weight based on 100 parts by weight of the total thermally conductive filler.
- the thermally conductive resin composition according to any one of [1] to [4].
- the binder is a reactive silicon-containing polymer having at least one hydroxyl group or hydrolyzable group on a silicon atom at the end of the polymer, and the polymer component of the reactive silicon-containing polymer is a curable acrylic resin. and a curable polypropylene oxide-based resin, the thermally conductive resin composition according to any one of [1] to [5].
- the binder is a reactive silicon-containing polymer having at least one hydroxyl group or hydrolyzable group on the silicon atom at the end of the polymer, and the polymer component of the reactive silicon-containing polymer is a non-curing acrylic resin. and a curable polypropylene oxide-based resin, the thermally conductive resin composition according to any one of [1] to [5].
- a heat radiating member obtained by curing the thermally conductive resin composition according to any one of [1] to [7] in a state where it is integrated with a heating element and/or a heat radiating element.
- Example 1 As a binder, 50 parts by weight of a curable acrylic resin Kaneka - 100 parts by weight of isononyl-cyclohexane-dicarboxylate (DINCH) (manufactured by BASF), and 900 parts by weight of aluminum oxide (manufactured by DENKA Corporation, average particle size D50, 12 ⁇ m) as a thermally conductive filler, oxidized 950 parts by weight of aluminum (manufactured by DENKA Co., Ltd., average particle size D50, 23 ⁇ m) and 550 parts by weight of zinc oxide (1st class zinc oxide, manufactured by Sakai Chemical Co., Ltd., average particle size D50, 0.75 ⁇ m) were added to a 5L butterfly mixer.
- DINCH isononyl-cyclohexane-dicarboxylate
- aluminum oxide manufactured by DENKA Corporation, average particle size D50, 12 ⁇ m
- oxidized 950 parts by weight of aluminum manufactured by DENKA Co.
- the mixture was dehydrated by vacuuming while heating and kneading. After the dehydration was completed, the kneaded product was cooled, and 5 parts by weight of a dehydrating agent (vinyltrimethoxysilane) and 5 parts by weight of a curing catalyst tin neodecanoate (Neostan U50, manufactured by Nitto Kasei Co., Ltd.) were mixed into the kneaded product. In this way, a thermally conductive resin composition was prepared. This product was filled and stored in a high barrier cartridge manufactured by Showa Marutsutsu Co., Ltd. The blending ratio of the thermally conductive filler is shown in Table 1.
- Average particle diameter D50 The average particle diameter D50 was measured using Microtrac MT3300EX II manufactured by Microtrac Bell Co., Ltd.
- the viscosity of the thermally conductive resin composition at 23° C. was measured using a B-type viscometer (BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity was measured after two rotations at 10 rpm using a No. 7 rotor. As a result, the viscosity was 380 Pa ⁇ S.
- the thermally conductive resin composition was poured into a 100 mm x 100 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet. This sheet was cut into a size of 15 mm x 15 mm x 2 mm, and the thermal conductivity was measured using a HOT DISK measuring device (TPS 2500S, manufactured by Kyoto Denshi Co., Ltd.). The thermal conductivity was 3.0 W/mK.
- the thermally conductive resin composition was poured into a 150 mm x 150 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet.
- the tensile elongation of this sheet was measured in accordance with ASTM D882.
- the tensile elongation rate was 17%.
- the cured sheet produced from the thermally conductive resin composition of this example had a high tensile elongation rate and good releasability after being applied to a substrate.
- Example 2 As a binder, 50 parts by weight of a curable acrylic resin Kaneka - 100 parts by weight of isononyl-cyclohexane-dicarboxylate (DINCH) (manufactured by BASF), and 850 parts by weight of aluminum oxide (manufactured by DENKA Corporation, average particle size D50, 12 ⁇ m) as a thermally conductive filler, oxidized 5L of 1,000 parts by weight of aluminum (manufactured by DENKA Co., Ltd., average particle size D50, 23 ⁇ m) and 500 parts by weight of zinc oxide (1st class zinc oxide, manufactured by Sakai Chemical Co., Ltd., average particle size D50, 0.75 ⁇ m) The mixture was heated and kneaded using a butterfly mixer while being vacuumed and dehydrated.
- DINCH isononyl-cyclohexane-dicarboxylate
- aluminum oxide manufactured by DENKA Corporation, average particle size D50, 12 ⁇ m
- the kneaded product was cooled, and 5 parts by weight of a dehydrating agent (A171) and 5 parts by weight of a curing catalyst tin neodecanoate (Neostane U50, manufactured by Nitto Kasei Co., Ltd.) were mixed into the kneaded product.
- a thermally conductive resin composition was prepared.
- This product was filled and stored in a high barrier cartridge manufactured by Showa Marutsutsu Co., Ltd.
- the blending ratio of the thermally conductive filler is shown in Table 1.
- Average particle diameter D50 The average particle diameter D50 was measured using Microtrac MT3300EX II manufactured by Microtrac Bell Co., Ltd.
- the viscosity of the thermally conductive resin composition at 23° C. was measured using a B-type viscometer (BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity was measured after two rotations at 10 rpm using a No. 7 rotor. As a result, the viscosity was 420 Pa ⁇ S.
- the thermally conductive resin composition was spread on a 100 mm x 100 mm x 2 mm thick mold placed on a Teflon (registered trademark) plate and held in an atmosphere of 23°C/50% RH for 12 hours to produce a cured sheet. did. This sheet was cut into a size of 15 mm x 15 mm x 2 mm, and the thermal conductivity was measured using a HOT DISK measuring device (TPS 2500S, manufactured by Kyoto Denshi Co., Ltd.). The thermal conductivity was 3.1 W/mK.
- the thermally conductive resin composition was poured into a 150 mm x 150 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet.
- the tensile elongation of this sheet was measured in accordance with ASTM D882.
- the tensile elongation rate was 15%.
- the cured sheet produced from the thermally conductive resin composition of this example had a high tensile elongation rate and good releasability after being applied to a substrate.
- Example 3 As a binder, 50 parts by weight of a curable acrylic resin Kaneka - 100 parts by weight of isononyl-cyclohexane-dicarboxylate (DINCH) (manufactured by BASF), and 950 parts by weight of aluminum oxide (manufactured by DENKA Corporation, average particle size D50, 9 ⁇ m) as a thermally conductive filler, oxidized 900 parts by weight of aluminum (manufactured by SHANDONG JCT ABRASIVES CO., LTD, average particle size D50, 30 ⁇ m), and 600 parts by weight of zinc oxide (1st class zinc oxide, manufactured by Sakai Chemical Co., Ltd., average particle size D50, 0.75 ⁇ m), The mixture was heated and kneaded using a 5L butterfly mixer while being vacuumed and dehydrated.
- DINCH isononyl-cyclohexane-dicarboxylate
- aluminum oxide manufactured by DENKA Corporation, average particle size D50, 9
- the kneaded product was cooled, and 5 parts by weight of a dehydrating agent (A171) and 5 parts by weight of a curing catalyst tin neodecanoate (Neostane U50, manufactured by Nitto Kasei Co., Ltd.) were mixed into the kneaded product.
- a thermally conductive resin composition was prepared.
- This product was filled and stored in a high barrier cartridge manufactured by Showa Marutsutsu Co., Ltd.
- the blending ratio of the thermally conductive filler is shown in Table 1.
- Average particle diameter D50 The average particle diameter D50 was measured using Microtrac MT3300EX II manufactured by Microtrac Bell Co., Ltd.
- the viscosity of the thermally conductive resin composition at 23° C. was measured using a B-type viscometer (BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity was measured after two rotations at 10 rpm using a No. 7 rotor. As a result, the viscosity was 410 Pa ⁇ S.
- the thermally conductive resin composition was spread on a 100 mm x 100 mm x 2 mm thick mold placed on a Teflon (registered trademark) plate and held in an atmosphere of 23°C/50% RH for 12 hours to produce a cured sheet. did. This sheet was cut into a size of 15 mm x 15 mm x 2 mm, and the thermal conductivity was measured using a HOT DISK measuring device (TPS 2500S, manufactured by Kyoto Denshi Co., Ltd.). The thermal conductivity was 3.2 W/mK.
- the thermally conductive resin composition was poured into a 150 mm x 150 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet.
- the tensile elongation of this sheet was measured in accordance with ASTM D882.
- the tensile elongation rate was 18%.
- the cured sheet produced from the thermally conductive resin composition of this example had a high tensile elongation rate and good releasability after being applied to a substrate.
- Example 4 50 parts by weight of non-curing acrylic resin ARUFON UP1020 (manufactured by Toagosei Co., Ltd.) as a binder, 50 parts by weight of curable polyether resin Kaneka thylyl resin product number SAX530 (manufactured by Kaneka Co., Ltd.), and 50 parts by weight of non-curing acrylic resin ARUFON UP1020 (manufactured by Toagosei Co., Ltd.); 100 parts by weight of isononyl-cyclohexane-dicarboxylate (DINCH) (manufactured by BASF), 950 parts by weight of aluminum oxide (manufactured by DENKA Corporation, average particle size D50, 9 ⁇ m) as a thermally conductive filler, aluminum oxide (manufactured by SHANDONG JCT ABRASIVES CO., LTD, average particle size D50, 30 ⁇ m) 900 parts by weight, and 600 parts by weight of zinc oxide
- Average particle diameter D50 The average particle diameter D50 was measured using Microtrac MT3300EX II manufactured by Microtrac Bell Co., Ltd.
- the viscosity of the thermally conductive resin composition at 23° C. was measured using a B-type viscometer (BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity was measured after two rotations at 10 rpm using a No. 7 rotor. As a result, the viscosity was 420 Pa ⁇ S.
- the thermally conductive resin composition was spread on a 100 mm x 100 mm x 2 mm thick mold placed on a Teflon (registered trademark) plate and held in an atmosphere of 23°C/50% RH for 12 hours to produce a cured sheet. did. This sheet was cut into a size of 15 mm x 15 mm x 2 mm, and the thermal conductivity was measured using a HOT DISK measuring device (TPS 2500S, manufactured by Kyoto Denshi Co., Ltd.). The thermal conductivity was 3.1 W/mK.
- the thermally conductive resin composition was poured into a 150 mm x 150 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet.
- the tensile elongation of this sheet was measured in accordance with ASTM D882.
- the tensile elongation rate was 20%.
- the cured sheet produced from the thermally conductive resin composition of this example had a high tensile elongation rate and good releasability after being applied to a substrate.
- DINCH di-isonony
- the kneaded product was cooled, and 5 parts by weight of a dehydrating agent (A171) and 5 parts by weight of tin neodecanoate (Neostane U50, manufactured by Nitto Kasei Co., Ltd.) as a curing catalyst were mixed into the kneaded product.
- a thermally conductive resin composition was prepared.
- This product was filled and stored in a high barrier cartridge manufactured by Showa Marutsutsu Co., Ltd.
- the blending ratio of the thermally conductive filler is shown in Table 1.
- Average particle diameter D50 The average particle diameter D50 was measured using Microtrac MT3300EX II manufactured by Microtrac Bell Co., Ltd.
- the viscosity of the thermally conductive resin composition at 23° C. was measured using a B-type viscometer (BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity was measured after two rotations at 10 rpm using a No. 7 rotor. As a result, the viscosity was 710 Pa ⁇ S, and a problem occurred in the coatability of the thermally conductive resin composition.
- B-type viscometer BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.
- the thermally conductive resin composition was spread on a 100 mm x 100 mm x 2 mm thick mold placed on a Teflon (registered trademark) plate and held in an atmosphere of 23°C/50% RH for 12 hours to produce a cured sheet. did. This sheet was cut into a size of 15 mm x 15 mm x 2 mm, and the thermal conductivity was measured using a HOT DISK measuring device (TPS 2500S, manufactured by Kyoto Denshi Co., Ltd.). The thermal conductivity was 2.5 W/mK.
- the thermally conductive resin composition was poured into a 150 mm x 150 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet.
- the tensile elongation of this sheet was measured in accordance with ASTM D882.
- the tensile elongation rate was 9%.
- the cured sheet produced from the thermally conductive resin composition of this comparative example had a low tensile elongation rate and poor releasability after being applied to a substrate.
- a curable polyether resin Kaneka thylyl resin SAX580 (manufactured by Kaneka Corporation) as a binder
- DINCH di-isonon
- the kneaded product was cooled, and 5 parts by weight of a dehydrating agent (A171) and 5 parts by weight of a curing catalyst tin neodecanoate (Neostane U50, manufactured by Nitto Kasei Co., Ltd.) were mixed into the kneaded product.
- a thermally conductive resin composition was prepared.
- This product was filled and stored in a high barrier cartridge manufactured by Showa Marutsutsu Co., Ltd.
- the blending ratio of the thermally conductive filler is shown in Table 1.
- Average particle diameter D50 The average particle diameter D50 was measured using Microtrac MT3300EX II manufactured by Microtrac Bell Co., Ltd.
- the viscosity of the thermally conductive resin composition at 23° C. was measured using a B-type viscometer (BSII-type viscometer manufactured by Toki Sangyo Co., Ltd.). The viscosity was measured after two rotations at 10 rpm using a No. 7 rotor. As a result, the viscosity was 650 Pa ⁇ S, which caused a problem in the coatability of the thermally conductive resin composition.
- the thermally conductive resin composition was spread on a 100 mm x 100 mm x 2 mm thick mold placed on a Teflon (registered trademark) plate and held in an atmosphere of 23°C/50% RH for 12 hours to produce a cured sheet. did. This sheet was cut into a size of 15 mm x 15 mm x 2 mm, and the thermal conductivity was measured using a HOT DISK measuring device (TPS 2500S, manufactured by Kyoto Denshi Co., Ltd.). The thermal conductivity was 2.2 W/mK.
- the thermally conductive resin composition was poured into a 150 mm x 150 mm x 2 mm thick mold, spread, and held in an atmosphere of 23° C./50% RH for 12 hours to produce a cured sheet.
- the tensile elongation of this sheet was measured in accordance with ASTM D882.
- the tensile elongation rate was 33%.
- the cured sheet produced from the thermally conductive resin composition of this comparative example had a high tensile elongation rate and good releasability after being applied to a substrate.
- One embodiment of the present invention can be used for a heat radiating member, and more specifically, can be used for a heat radiating member included in an electronic device (for example, a personal computer, a mobile phone, a smartphone).
- an electronic device for example, a personal computer, a mobile phone, a smartphone.
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Abstract
Description
バインダーとして硬化性アクリル系樹脂 カネカXMAP樹脂((株)カネカ社製)50重量部、および硬化性ポリエーテル系樹脂 カネカサイリル樹脂品番SAX530((株)カネカ社製)50重量部、可塑剤としてのジ-イソノニル-シクロヘキサン-ジカルボキシレート(DINCH)(BASF社製)100重量部、並びに、熱伝導性充填材としての酸化アルミニウム(DENKA(株)製、平均粒子径D50、12μm)900重量部、酸化アルミニウム(DENKA(株)製、平均粒子径D50、23μm)950重量部、および酸化亜鉛(堺化学(株)酸化亜鉛1種、平均粒子径D50、0.75μm)550重量部を、5Lバタフライミキサーを用いて加熱混練しながら真空引きを行って脱水した。脱水完了後に混練物を冷却し、当該混錬物へ、脱水剤(ビニルトリメトキシシラン)5重量部、および硬化触媒 ネオデカン酸スズ(日東化成(株)ネオスタンU50)5重量部を混合した。これにより、熱伝導性樹脂組成物を調製した。本製品を昭和丸筒株式会社製のハイバリアカートリッジに充填し保管した。熱伝導性充填材の配合割合は表1に記載している。
平均粒子径D50は、マイクロトラック・ベル株式会社製マイクロトラック MT3300EX IIを用いて測定を行った。
熱伝導性樹脂組成物の23℃での粘度を、B型粘度計(東機産業(株)製BSII型粘度計)でNo.7のローターを使用し10rpmで2回転後の粘度として測定した。その結果、粘度は380Pa・Sであった。
熱伝導性樹脂組成物を100mm×100mm×2mm厚の型枠に流し込み塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートを15mm×15mm×2mmに切り出して、HOT DISK測定装置(京都電子(株) TPS 2500S)を用いて熱伝導率を測定した。熱伝導率は3.0W/mKであった。
熱伝導性樹脂組成物を150mm×150mm×2mm厚の型枠に流し込み塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートをASTM D882に準拠した方法にて引張伸びを測定した。引張伸び率は17%であった。本実施例の熱伝導性樹脂組成物から作製された硬化シートは、引張伸び率が高く、基材への塗布後の剥離性が良好であった。
バインダーとして硬化性アクリル系樹脂 カネカXMAP樹脂((株)カネカ社製)50重量部、および硬化性ポリエーテル系樹脂 カネカサイリル樹脂品番SAX530((株)カネカ社製)50重量部、可塑剤としてのジ-イソノニル-シクロヘキサン-ジカルボキシレート(DINCH)(BASF社製)100重量部、並びに、熱伝導性充填材としての酸化アルミニウム(DENKA(株)製、平均粒子径D50、12μm)850重量部、酸化アルミニウム(DENKA(株)製、平均粒子径D50、23μm)1,000重量部、および酸化亜鉛(堺化学(株)酸化亜鉛1種、平均粒子径D50、0.75μm)500重量部を、5Lバタフライミキサーを用いて加熱混練しながら真空引きを行って脱水した。脱水完了後に混練物を冷却し、当該混錬物へ、脱水剤(A171)5重量部、および硬化触媒 ネオデカン酸スズ(日東化成(株)ネオスタンU50)5重量部を混合した。これにより、熱伝導性樹脂組成物を調製した。本製品を昭和丸筒株式会社製のハイバリアカートリッジに充填し保管した。熱伝導性充填材の配合割合は表1に記載している。
平均粒子径D50は、マイクロトラック・ベル株式会社製マイクロトラック MT3300EX IIを用いて測定を行った。
熱伝導性樹脂組成物の23℃での粘度を、B型粘度計(東機産業(株)製BSII型粘度計)でNo.7のローターを使用し10rpmで2回転後の粘度として測定した。その結果、粘度は420Pa・Sであった。
熱伝導性樹脂組成物をテフロン(登録商標)板の上においた100mm×100mm×2mm厚の型枠に塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートを15mm×15mm×2mmに切り出して、HOT DISK測定装置(京都電子(株) TPS 2500S)を用いて熱伝導率を測定した。熱伝導率は3.1W/mKであった。
熱伝導性樹脂組成物を150mm×150mm×2mm厚の型枠に流し込み塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートをASTM D882に準拠した方法にて引張伸びを測定した。引張伸び率は15%であった。本実施例の熱伝導性樹脂組成物から作製された硬化シートは、引張伸び率が高く、基材への塗布後の剥離性が良好であった。
バインダーとして硬化性アクリル系樹脂 カネカXMAP樹脂((株)カネカ社製)50重量部、および硬化性ポリエーテル系樹脂 カネカサイリル樹脂品番SAX530((株)カネカ社製)50重量部、可塑剤としてのジ-イソノニル-シクロヘキサン-ジカルボキシレート(DINCH)(BASF社製)100重量部、並びに、熱伝導性充填材としての酸化アルミニウム(DENKA(株)製、平均粒子径D50、9μm)950重量部、酸化アルミニウム(SHANDONG JCT ABRASIVES CO., LTD製、平均粒子径D50、30μm)900重量部、および酸化亜鉛(堺化学(株)酸化亜鉛1種、平均粒子径D50、0.75μm)600重量部を、5Lバタフライミキサーを用いて加熱混練しながら真空引きを行って脱水した。脱水完了後に混練物を冷却し、当該混錬物へ、脱水剤(A171)5重量部、および硬化触媒 ネオデカン酸スズ(日東化成(株)ネオスタンU50)5重量部を混合した。これにより、熱伝導性樹脂組成物を調製した。本製品を昭和丸筒株式会社製のハイバリアカートリッジに充填し保管した。熱伝導性充填材の配合割合は表1に記載している。
平均粒子径D50は、マイクロトラック・ベル株式会社製マイクロトラック MT3300EX IIを用いて測定を行った。
熱伝導性樹脂組成物の23℃での粘度を、B型粘度計(東機産業(株)製BSII型粘度計)でNo.7のローターを使用し10rpmで2回転後の粘度として測定した。その結果、粘度は410Pa・Sであった。
熱伝導性樹脂組成物をテフロン(登録商標)板の上においた100mm×100mm×2mm厚の型枠に塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートを15mm×15mm×2mmに切り出して、HOT DISK測定装置(京都電子(株) TPS 2500S)を用いて熱伝導率を測定した。熱伝導率は3.2W/mKであった。
熱伝導性樹脂組成物を150mm×150mm×2mm厚の型枠に流し込み塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートをASTM D882に準拠した方法にて引張伸びを測定した。引張伸び率は18%であった。本実施例の熱伝導性樹脂組成物から作製された硬化シートは、引張伸び率が高く、基材への塗布後の剥離性が良好であった。
バインダーとして非硬化性アクリル系樹脂 ARUFON UP1020(東亞合成株式会社製)50重量部、および硬化性ポリエーテル系樹脂 カネカサイリル樹脂品番SAX530((株)カネカ社製)50重量部、可塑剤としてのジ-イソノニル-シクロヘキサン-ジカルボキシレート(DINCH)(BASF社製)100重量部、並びに、熱伝導性充填材としての酸化アルミニウム(DENKA(株)製、平均粒子径D50、9μm)950重量部、酸化アルミニウム(SHANDONG JCT ABRASIVES CO., LTD製、平均粒子径D50、30μm)900重量部、および酸化亜鉛(堺化学(株)酸化亜鉛1種、平均粒子径D50、0.75μm)600重量部を、5Lバタフライミキサーを用いて加熱混練しながら真空引きを行って脱水した。脱水完了後に混練物を冷却し、当該混錬物へ、脱水剤(A171)5重量部、および硬化触媒 ネオデカン酸スズ(日東化成(株)ネオスタンU50)5重量部を混合した。これにより、熱伝導性樹脂組成物を調製した。本製品を昭和丸筒株式会社製のハイバリアカートリッジに充填し保管した。熱伝導性充填材の配合割合は表1に記載している。
平均粒子径D50は、マイクロトラック・ベル株式会社製マイクロトラック MT3300EX IIを用いて測定を行った。
熱伝導性樹脂組成物の23℃での粘度を、B型粘度計(東機産業(株)製BSII型粘度計)でNo.7のローターを使用し10rpmで2回転後の粘度として測定した。その結果、粘度は420Pa・Sであった。
熱伝導性樹脂組成物をテフロン(登録商標)板の上においた100mm×100mm×2mm厚の型枠に塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートを15mm×15mm×2mmに切り出して、HOT DISK測定装置(京都電子(株) TPS 2500S)を用いて熱伝導率を測定した。熱伝導率は3.1W/mKであった。
熱伝導性樹脂組成物を150mm×150mm×2mm厚の型枠に流し込み塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートをASTM D882に準拠した方法にて引張伸びを測定した。引張伸び率は20%であった。本実施例の熱伝導性樹脂組成物から作製された硬化シートは、引張伸び率が高く、基材への塗布後の剥離性が良好であった。
バインダーとして硬化性ポリエーテル系樹脂 カネカサイリル樹脂品番SAX580((株)カネカ社製)120重量部、可塑剤としてのジ-イソノニル-シクロヘキサン-ジカルボキシレート(DINCH)(BASF社製)120重量部、並びに、熱伝導性充填材としての酸化アルミニウム(DENKA(株)製、平均粒子径D50、9μm)1190重量部、酸化アルミニウム(SHANDONG JCT ABRASIVES CO., LTD製、平均粒子径D50、30μm)825重量部、および酸化アルミニウム(DENKA(株)製、平均粒子径D50、0.24μm)190重量部を、5Lバタフライミキサーを用いて加熱混練しながら真空引きを行って脱水した。脱水完了後に混練物を冷却し、当該混錬物へ、脱水剤(A171)5重量部、および硬化触媒であるネオデカン酸スズ(日東化成(株)ネオスタンU50)5重量部を混合した。これにより、熱伝導性樹脂組成物を調製した。本製品を昭和丸筒株式会社製のハイバリアカートリッジに充填し保管した。熱伝導性充填材の配合割合は表1に記載している。
平均粒子径D50は、マイクロトラック・ベル株式会社製マイクロトラック MT3300EX IIを用いて測定を行った。
熱伝導性樹脂組成物の23℃での粘度を、B型粘度計(東機産業(株)製BSII型粘度計)でNo.7のローターを使用し10rpmで2回転後の粘度として測定した。その結果、粘度は710Pa・Sであり、熱伝導性樹脂組成物の塗布性に問題が発生した。
熱伝導性樹脂組成物をテフロン(登録商標)板の上においた100mm×100mm×2mm厚の型枠に塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートを15mm×15mm×2mmに切り出して、HOT DISK測定装置(京都電子(株) TPS 2500S)を用いて熱伝導率を測定した。熱伝導率は2.5W/mKであった。
熱伝導性樹脂組成物を150mm×150mm×2mm厚の型枠に流し込み塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートをASTM D882に準拠した方法にて引張伸びを測定した。引張伸び率は9%であった。本比較例の熱伝導性樹脂組成物から作製された硬化シートは、引張伸び率が低く、基材への塗布後の剥離性が悪かった。
バインダーとして硬化性ポリエーテル系樹脂 カネカサイリル樹脂品番SAX580((株)カネカ社製)100重量部、可塑剤としてのジ-イソノニル-シクロヘキサン-ジカルボキシレート(DINCH)(BASF社製)100重量部、並びに、熱伝導性充填材としての酸化アルミニウム(DENKA(株)製、平均粒子径D50、7μm)1200重量部、および酸化亜鉛(堺化学(株)酸化亜鉛1種、平均粒子径D50、0.75μm)550重量部を、5Lバタフライミキサーを用いて加熱混練しながら真空引きを行って脱水した。脱水完了後に混練物を冷却し、当該混錬物へ、脱水剤(A171)5重量部、および硬化触媒 ネオデカン酸スズ(日東化成(株)ネオスタンU50)5重量部を混合した。これにより、熱伝導性樹脂組成物を調製した。本製品を昭和丸筒株式会社製のハイバリアカートリッジに充填し保管した。熱伝導性充填材の配合割合は表1に記載している。
平均粒子径D50は、マイクロトラック・ベル株式会社製マイクロトラック MT3300EX IIを用いて測定を行った。
熱伝導性樹脂組成物の23℃での粘度を、B型粘度計(東機産業(株)製BSII型粘度計)でNo.7のローターを使用し10rpmで2回転後の粘度として測定した。その結果、粘度は650Pa・Sであり、熱伝導性樹脂組成物の塗布性に問題が発生した。
熱伝導性樹脂組成物をテフロン(登録商標)板の上においた100mm×100mm×2mm厚の型枠に塗り広げて、23℃/50%RHの雰囲気下で12時間保持して硬化シートを作製した。本シートを15mm×15mm×2mmに切り出して、HOT DISK測定装置(京都電子(株) TPS 2500S)を用いて熱伝導率を測定した。熱伝導率は2.2W/mKであった。
Claims (10)
- バインダーと熱伝導性充填材とを含む熱伝導性樹脂組成物であって、
前記熱伝導性充填材が、少なくとも酸化アルミニウムと酸化亜鉛とを含み、
前記熱伝導性組成物の硬化後の熱伝導率が、3W/mK以上であることを特徴とする、熱伝導性樹脂組成物。 - 前記酸化アルミニウムは、平均粒子径D50が20μm~40μmの第一の粒子と、平均粒子径D50が5μm~19μmの第二の粒子とを含むことを特徴とする、請求項1に記載の熱伝導性樹脂組成物。
- 前記熱伝導性樹脂組成物に含まれる前記酸化アルミニウムの含有率が、全熱伝導性充填材100重量部に対して、前記第一の粒子が30重量部~50重量部、前記第二の粒子が30重量部~45重量部であることを特徴とする、請求項2に記載の熱伝導性樹脂組成物。
- 前記熱伝導性樹脂組成物に含まれる前記酸化亜鉛が、平均粒子径D50で0.1μm~3μmであることを特徴とする、請求項1に記載の熱伝導性樹脂組成物。
- 前記熱伝導性樹脂組成物に含まれる前記酸化亜鉛の含有率が、全熱伝導性充填材100重量部に対して、15重量部~30重量部であることを特徴とする、請求項1に記載の熱伝導性樹脂組成物。
- 前記バインダーが、硬化性アクリル系樹脂及び硬化性ポリエーテル系樹脂を含むことを特徴とする、請求項1に記載の熱伝導性樹脂組成物。
- 前記バインダーが、硬化性アクリル系樹脂及び硬化性ポリプロピレンオキサイド系樹脂を含むことを特徴とする、請求項6に記載の熱伝導性樹脂組成物。
- 前記バインダーが、非硬化性アクリル系樹脂及び硬化性ポリエーテル系樹脂を含むことを特徴とする、請求項1に記載の熱伝導性樹脂組成物。
- 前記バインダーが、非硬化性アクリル系樹脂及び硬化性ポリプロピレンオキサイド系樹脂を含むことを特徴とする、請求項8に記載の熱伝導性樹脂組成物。
- 請求項1~9の何れか1項に記載の熱伝導性樹脂組成物が、発熱体および/または放熱体と一体化した状態で硬化してなる、放熱部材。
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