WO2011092963A1 - セラミックグリーンシート用スラリー組成物、セラミックグリーンシート及び積層セラミックコンデンサ - Google Patents
セラミックグリーンシート用スラリー組成物、セラミックグリーンシート及び積層セラミックコンデンサ Download PDFInfo
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- WO2011092963A1 WO2011092963A1 PCT/JP2010/072563 JP2010072563W WO2011092963A1 WO 2011092963 A1 WO2011092963 A1 WO 2011092963A1 JP 2010072563 W JP2010072563 W JP 2010072563W WO 2011092963 A1 WO2011092963 A1 WO 2011092963A1
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- Prior art keywords
- green sheet
- ceramic green
- mol
- slurry composition
- ceramic
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- 238000010556 emulsion polymerization method Methods 0.000 description 1
- LPUZTLKYAOOFDX-QXMHVHEDSA-N ethenyl (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC=C LPUZTLKYAOOFDX-QXMHVHEDSA-N 0.000 description 1
- YCUBDDIKWLELPD-UHFFFAOYSA-N ethenyl 2,2-dimethylpropanoate Chemical compound CC(C)(C)C(=O)OC=C YCUBDDIKWLELPD-UHFFFAOYSA-N 0.000 description 1
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- 230000003472 neutralizing effect Effects 0.000 description 1
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- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
- FSAJWMJJORKPKS-UHFFFAOYSA-N octadecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C=C FSAJWMJJORKPKS-UHFFFAOYSA-N 0.000 description 1
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- 150000007524 organic acids Chemical class 0.000 description 1
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- HVAMZGADVCBITI-UHFFFAOYSA-M pent-4-enoate Chemical compound [O-]C(=O)CCC=C HVAMZGADVCBITI-UHFFFAOYSA-M 0.000 description 1
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- 150000002978 peroxides Chemical class 0.000 description 1
- 229940100595 phenylacetaldehyde Drugs 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- AAYRWMCIKCRHIN-UHFFFAOYSA-N propane-1-sulfonic acid;prop-2-enamide Chemical compound NC(=O)C=C.CCCS(O)(=O)=O AAYRWMCIKCRHIN-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 238000010992 reflux Methods 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
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 description 1
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- KOZCZZVUFDCZGG-UHFFFAOYSA-N vinyl benzoate Chemical compound C=COC(=O)C1=CC=CC=C1 KOZCZZVUFDCZGG-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
- C04B35/4682—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62625—Wet mixtures
- C04B35/6264—Mixing media, e.g. organic solvents
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/6342—Polyvinylacetals, e.g. polyvinylbutyral [PVB]
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63424—Polyacrylates; Polymethacrylates
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/636—Polysaccharides or derivatives thereof
- C04B35/6365—Cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/48—Isomerisation; Cyclisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
- C04B2235/3234—Titanates, not containing zirconia
- C04B2235/3236—Alkaline earth titanates
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5445—Particle size related information expressed by the size of the particles or aggregates thereof submicron sized, i.e. from 0,1 to 1 micron
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/61—Mechanical properties, e.g. fracture toughness, hardness, Young's modulus or strength
Definitions
- the present invention relates to a slurry composition for a ceramic green sheet, a ceramic green sheet, and a multilayer ceramic capacitor.
- a binder resin such as polyvinyl butyral resin and a plasticizer are added, and a slurry composition for a ceramic green sheet is prepared by uniformly mixing with a ball mill or the like.
- the slurry composition is cast-molded on a releasable support such as a polyethylene terephthalate film, the solvent and the like are distilled off by heating or the like, and then peeled from the support to produce a ceramic green sheet.
- These ceramic green sheets are used by being peeled off from the peelable support.
- a plurality of laminates obtained by alternately applying a conductive paste serving as an internal electrode on the surface of a ceramic green sheet by screen printing or the like are heated and pressed to obtain a laminate.
- a laminated body is formed by various processes and cut into a predetermined shape. Then, through a process of thermally decomposing and removing the binder component contained in the laminate, so-called degreasing treatment, and then sintering the external electrode on the end face of the ceramic fired product obtained by firing.
- a multilayer ceramic capacitor is manufactured. Therefore, the ceramic green sheet is required to have good workability in preparing the slurry composition for a ceramic green sheet and strength to withstand these processing steps.
- the ceramic powder used in the ceramic green sheet has a fine particle size of 0.5 ⁇ m or less, and is coated on a peelable support in a thin film shape of 5 ⁇ m or less. Attempts have been made.
- Patent Document 1 At least dialdehyde is added at a ratio of 0.005 to 2 mol% with respect to the vinyl alcohol unit of polyvinyl alcohol having a saponification degree of 80 mol% or more.
- the ceramic paste for ceramic green sheets is disclosed, and a slurry composition for ceramic green sheets with excellent mechanical strength is realized.
- the present invention provides a slurry composition for a ceramic green sheet, a ceramic green sheet, and a multilayer ceramic capacitor that are capable of obtaining a ceramic green sheet having sufficient mechanical strength and less warpage in view of the above-described present situation.
- the present inventors have found that the degree of polymerization is more than 1000 and less than 4500 as the binder resin of the ceramic green sheet slurry composition, the vinyl ester unit content is less than 1 mol%, and the degree of acetalization is By using a polyvinyl acetal resin of 60 to 83 mol%, it is possible to achieve excellent coating properties, and even when the thickness is reduced, the mechanical strength is high, and further, it is difficult to warp.
- the inventors have found that a ceramic green sheet can be obtained and have completed the present invention.
- the polymerization degree of the polyvinyl acetal resin used in the present invention is more than 1000 and 4500 or less.
- the degree of polymerization is 1000 or less, the mechanical strength becomes insufficient when a thin film ceramic green sheet having a thickness of 2 ⁇ m or less is produced.
- the degree of polymerization exceeds 4500, it does not sufficiently dissolve in an organic solvent. Or the solution viscosity becomes too high, and the coatability and dispersibility are reduced.
- the minimum with a preferable polymerization degree of polyvinyl acetal resin is 1500, and an upper limit is 3500.
- the degree of polymerization is determined from both the viscosity average degree of polymerization of the polyvinyl alcohol resin used in the production of the polyvinyl acetal resin and the viscosity average degree of polymerization of the polyvinyl acetal resin. That is, since the polymerization degree does not change by acetalization, the polymerization degree of the polyvinyl alcohol resin and the polyvinyl acetal resin obtained by acetalizing the polyvinyl alcohol are the same.
- the viscosity average degree of polymerization of the polyvinyl alcohol resin refers to an average degree of polymerization determined based on JIS K6726.
- the apparent viscosity average polymerization degree of the whole polyvinyl alcohol resin after mixing is said.
- the degree of polymerization of the polyvinyl acetal resin it means a value obtained by measuring the viscosity average degree of polymerization after acetalizing the polyvinyl alcohol resin based on the method described in JIS K6728.
- the content of vinyl ester units in the polyvinyl acetal resin is less than 1 mol%, and the preferred upper limit is 0.99 mol%. If it is 1 mol% or more, the flexibility of the thin film green sheet becomes too strong, and the ceramic green sheet cannot maintain sufficient mechanical strength.
- the polyvinyl acetal resin having a vinyl ester unit content of less than 1 mol% is an acetal of a polyvinyl alcohol resin having a vinyl ester unit content of less than 1 mol%, that is, a polyvinyl alcohol resin having a saponification degree higher than 99 mol%. Can be obtained.
- a preferable lower limit of the saponification degree of the polyvinyl alcohol resin is 99.01 mol%.
- the preferable lower limit of the content of the vinyl ester unit in the polyvinyl acetal resin is 0.01 mol%.
- a polyvinyl acetal resin having a vinyl ester unit content of 0.01 mol% or less can be obtained by acetalizing a polyvinyl alcohol resin having a saponification degree of 99.99 mol% or more. It is difficult to industrially produce polyvinyl alcohol having a saponification degree of 99.99 mol% or more, and the acetalization reaction may be difficult due to poor solubility in water. Therefore, the upper limit with preferable saponification degree of polyvinyl alcohol resin is 99.99 mol%.
- the lower limit of the degree of acetalization of the polyvinyl acetal resin is 60 mol%, and the upper limit is 83 mol%. If it is less than 60 mol%, the polyvinyl acetal resin is highly hydrophilic and difficult to dissolve in an organic solvent, which hinders the production of a ceramic green sheet slurry composition. If it exceeds 83 mol%, there are few residual hydroxyl groups. Thus, the toughness of the polyvinyl acetal resin is impaired, and it is difficult to obtain industrially from the viewpoint of productivity and reactivity, leading to a decrease in productivity.
- the preferable lower limit of the degree of acetalization is 65 mol%, and the preferable upper limit is 75 mol%.
- the polyvinyl acetal resin used in the present invention is usually produced using a polyvinyl alcohol resin as a raw material.
- the polyvinyl alcohol resin can be obtained by a conventionally known method, that is, by polymerizing a vinyl ester monomer and saponifying the obtained polymer.
- a method for polymerizing the vinyl ester monomer a conventionally known method such as a solution polymerization method, a bulk polymerization method, a suspension polymerization method, and an emulsion polymerization method can be applied.
- As the polymerization initiator an azo initiator, a peroxide initiator, a redox initiator, or the like is appropriately selected depending on the polymerization method.
- a conventionally known alcoholysis or hydrolysis using an alkali catalyst or an acid catalyst can be applied.
- a saponification reaction using methanol as a solvent and a caustic soda (NaOH) catalyst is simple and most preferable.
- vinyl ester monomers examples include vinyl formate, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl isobutyrate, vinyl pivalate, vinyl versatate, vinyl caproate, vinyl caprylate, vinyl laurate, palmitic acid.
- vinyl, vinyl stearate, vinyl oleate, vinyl benzoate and the like can be mentioned, with vinyl acetate being particularly preferred.
- the polyvinyl alcohol resin in the present invention is a concept including a polymer composed of vinyl alcohol units and other monomer units.
- Examples of other monomers include, for example, ⁇ -olefins such as ethylene, propylene, n-butene and isobutylene; acrylic acid and its salts; methyl acrylate, ethyl acrylate, n-propyl acrylate, i-acrylate Acrylic acid esters such as propyl, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, dodecyl acrylate, octadecyl acrylate; methacrylic acid and salts thereof; methyl methacrylate, Methacrylic acid such as ethyl methacrylate, n-propyl methacrylate, i-propyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate
- the acid catalyst used for acetalization is not particularly limited, and any of organic acids and inorganic acids can be used. Examples thereof include acetic acid, paratoluenesulfonic acid, nitric acid, sulfuric acid, hydrochloric acid and the like. Among these, hydrochloric acid, sulfuric acid, and nitric acid are preferably used, and hydrochloric acid is particularly preferably used.
- the polyvinyl acetal resin of the present invention can be obtained by the following method. First, an aqueous solution of polyvinyl alcohol resin having a concentration of 3 to 15% by mass is adjusted to a temperature range of 80 to 100 ° C., and the temperature is gradually cooled over 10 to 60 minutes. When the temperature drops to ⁇ 10 to 40 ° C., an aldehyde and an acid catalyst are added, and an acetalization reaction is performed for 10 to 300 minutes while keeping the temperature constant. Thereafter, the reaction liquid is heated to a temperature of 45 to 80 ° C. over 30 to 200 minutes, and the temperature is maintained for 60 to 360 minutes. The aging temperature of the reaction (temperature after the temperature rise) is preferably 45 ° C. or higher.
- the reaction solution is preferably cooled to room temperature, washed with water, then added with a neutralizing agent such as alkali, washed and dried to obtain the desired polyvinyl acetal resin.
- a neutralizing agent such as alkali
- the monoaldehyde used for acetalizing the polyvinyl alcohol resin is not particularly limited.
- acetaldehyde including paraacetaldehyde
- propionaldehyde propionaldehyde
- butyraldehyde amylaldehyde
- hexylaldehyde hexylaldehyde
- heptylaldehyde examples include 2-ethylhexyl aldehyde, cyclohexyl aldehyde, furfural, benzaldehyde, 2-methylbenzaldehyde, 3-methylbenzaldehyde, 4-methylbenzaldehyde, p-hydroxybenzaldehyde, m-hydroxybenzaldehyde, phenylacetaldehyde, ⁇ -phenylpropionaldehyde, and the like.
- acetaldehyde and butyraldehyde are preferable from the viewpoint of productivity and property balance.
- These aldehydes may be used alone or in combination of two or more.
- a polyvinyl acetal resin using an aldehyde having 2 to 6 carbon atoms, particularly an aldehyde having 2 to 4 carbon atoms, particularly a polyvinyl butyral resin using n-butyraldehyde is a ceramic green sheet. It is preferable in terms of mechanical strength and coatability.
- the content of the ⁇ -olefin segment in the polyvinyl acetal resin of the present invention is preferably 1 mol% at the lower limit and 20 mol% at the upper limit. If the content of the ⁇ -olefin segment is less than 1 mol%, the effect of containing the ⁇ -olefin becomes insufficient, and if it exceeds 20 mol%, the hydrophobicity becomes too strong and the dispersibility of the ceramic powder decreases. Or the solubility of the polyvinyl alcohol resin decreases, making the acetalization reaction difficult.
- the slurry composition for ceramic green sheets of the present invention may contain an acrylic resin or a cellulose resin in addition to the polyvinyl acetal resin as a binder resin.
- an acrylic resin, a cellulose resin, or the like is contained as the binder resin, a preferable lower limit of the content of the polyvinyl acetal resin in the entire binder resin is 30% by mass. If it is less than 30% by mass, the resulting ceramic green sheet may have insufficient mechanical strength.
- the polyvinyl acetal resin used in the present invention can be produced by acetalizing a polyvinyl alcohol resin having a polymerization degree exceeding 1000 and not exceeding 4500 with an aldehyde.
- the average value of each polymerization degree should just exceed 1000 and 4500 or less.
- the preferable lower limit of the average value of the degree of polymerization is 1500 and the upper limit is 3500.
- the ceramic powder is not particularly limited, and examples thereof include alumina, zirconia, aluminum silicate, titanium oxide, zinc oxide, barium titanate, magnesia, sialon, spinelmullite, silicon carbide, silicon nitride, aluminum nitride, and the like. Can be mentioned. These ceramic powders may be used alone or in combination of two or more.
- the upper limit of the content of the ceramic powder with respect to the total amount of the slurry composition for a ceramic green sheet of the present invention is 80% by mass, and the lower limit is 30% by mass. When the content of the ceramic powder is less than 30% by mass, the viscosity becomes too low and the handling property when forming the ceramic green sheet is deteriorated. When the content is more than 80% by mass, the viscosity of the ceramic green sheet slurry composition is high. It becomes too much and the kneadability tends to decrease.
- the organic solvent is not particularly limited, and examples thereof include ketones such as acetone, methyl ethyl ketone, dipropyl ketone, and diisobutyl ketone; alcohols such as methanol, ethanol, isopropanol, and butanol; aromatic hydrocarbons such as toluene and xylene; Methyl propionate, ethyl propionate, butyl propionate, methyl butanoate, ethyl butanoate, butyl butanoate, methyl pentanoate, ethyl pentanoate, butyl pentanoate, methyl hexanoate, ethyl hexanoate, butyl hexanoate, acetic acid 2 -Esters such as ethylhexyl and 2-ethylhexyl butyrate; methyl cellosolve, ethyl cellosolve, butyl cell
- organic solvents may be used independently and 2 or more types may be used together.
- the upper limit of the content of the organic solvent with respect to the total amount of the slurry composition for a ceramic green sheet of the present invention is 80% by mass, and the lower limit is 20% by mass. If it is in the said range, moderate kneading
- the amount is more than 80% by mass, the viscosity becomes too low and the handling property at the time of forming the ceramic green sheet is deteriorated.
- the amount is less than 20% by mass, the viscosity of the slurry composition for the ceramic green sheet becomes too high and is kneadable. Tend to decrease.
- the slurry composition for ceramic green sheets is conventionally known as binder resins such as acrylic resins and cellulose resins, plasticizers, lubricants, dispersants, antistatic agents, antioxidants and the like as long as the effects of the present invention are not impaired.
- binder resins such as acrylic resins and cellulose resins, plasticizers, lubricants, dispersants, antistatic agents, antioxidants and the like as long as the effects of the present invention are not impaired.
- the additive may be contained.
- the slurry composition for ceramic green sheets of the present invention can contain a plasticizer as necessary.
- the type of plasticizer to be added is not particularly limited.
- Phthalic acid plasticizers such as dihexyl adipate and di (2-ethylhexyl) adipate (DOA)
- glycol plasticizers such as ethylene glycol, diethylene glycol and triethylene glycol
- triethylene glycol examples include glycol ester plasticizers such as dibutyrate, triethylene glycol di (2-ethylbutyrate), and triethylene glycol di (2-ethylhexanoate).
- the amount of the plasticizer to be used is not particularly limited, but is preferably 0.1 to 10% by mass, more preferably 1 to 8% by mass with respect to the total amount of the ceramic green sheet slurry composition.
- DOP, DOA, and triethylene glycol 2-ethylhexyl are preferable because they are low in volatility and easily maintain the flexibility of the sheet.
- the method for producing a slurry composition for a ceramic green sheet using the polyvinyl acetal resin of the present invention is not particularly limited.
- a binder resin containing the polyvinyl acetal resin, a ceramic powder, an organic solvent, and an addition as necessary A method of mixing various additives using various mixers such as a ball mill, a blender mill, and a three-roll mill.
- the slurry composition for ceramic green sheets of the present invention has the above-described configuration, a thin film ceramic green sheet having sufficient mechanical strength can be produced even if the thickness is 2 ⁇ m or less.
- the ceramic green sheet obtained using the slurry composition for ceramic green sheets of the present invention and having a thickness of 2 ⁇ m or less is also one aspect of the present invention.
- the method for producing the ceramic green sheet of the present invention is not particularly limited, and can be produced by a conventionally known production method.
- the slurry composition for a ceramic green sheet of the present invention can be peeled off such as a polyethylene terephthalate film. Examples include a method of casting on a body, removing the solvent by heating or the like, and then peeling from the support.
- a multilayer ceramic capacitor can be produced by laminating a ceramic green sheet of the present invention coated with a conductive paste.
- the multilayer ceramic capacitor obtained by using the ceramic green sheet and the conductive paste of the present invention is also one aspect of the present invention.
- the production method of the multilayer ceramic capacitor of the present invention is not particularly limited and can be produced by a conventionally known production method.
- a conductive paste serving as an internal electrode is applied to the surface of the ceramic green sheet of the present invention by screen printing or the like.
- a ceramic fired product obtained by stacking a plurality of coated materials alternately and heat-pressing them to obtain a laminate, pyrolyzing and removing the binder components contained in the laminate (degreasing treatment), and firing.
- a method of sintering an external electrode on the end face For example, a method of sintering an external electrode on the end face.
- the said electrically conductive paste it is not specifically limited as a manufacturing method of the said electrically conductive paste,
- it can manufacture with a well-known manufacturing method, for example, conductive powder, such as a metal, a dispersing agent, a plasticizer, a solvent, etc. to polyvinyl acetal resin.
- conductive powder such as a metal, a dispersing agent, a plasticizer, a solvent, etc. to polyvinyl acetal resin.
- the method of mixing etc. is mentioned.
- the physical properties of the polyvinyl acetal resin and the antioxidant were measured according to the following method.
- Example 1 Preparation of polyvinyl acetal resin
- a glass container having an internal volume of 2 liters equipped with a reflux condenser, a thermometer and a squid type stirring blade
- 1295 g of ion-exchanged water and 105 g of polyvinyl alcohol (PVA-1: polymerization degree 1050, saponification degree 99.2 mol%)
- PVA-1 polymerization degree 1050, saponification degree 99.2 mol
- the whole was heated to 98 ° C. to completely dissolve the polyvinyl alcohol, thereby forming an aqueous polyvinyl alcohol solution (concentration 7.5 mass%).
- the aqueous polyvinyl alcohol solution thus formed was gradually cooled to 5 ° C.
- the concentration of the aqueous solution was 70 g of butyraldehyde and an acid catalyst that was a butyralization catalyst.
- 100 ml of 20% by mass hydrochloric acid was added to start butyralization of polyvinyl alcohol. After butyralization was performed for 30 minutes, the whole was heated to 70 ° C. over 120 minutes, held at 70 ° C. for 180 minutes, and then cooled to room temperature.
- the resulting polyvinyl butyral resin (PVB-1) had a degree of butyralization of 71.0 mol%, a vinyl ester unit content of 0.8 mol%, and a vinyl alcohol unit content of 28.2 mol%. It was.
- Example 2 A polyvinyl butyral resin (PVB-2) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-2: polymerization degree 1700, saponification degree 99.6 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-2 was 69.8 mol%, the content of vinyl ester units was 0.4 mol%, and the content of vinyl alcohol units was 29.8 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 3 A polyvinyl butyral resin (PVB-3) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-3: polymerization degree 2400, saponification degree 99.9 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-3 was 74.3 mol%, the content of vinyl ester units was 0.1 mol%, and the content of vinyl alcohol units was 25.6 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 4 A polyvinyl butyral resin (PVB-4) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-4: polymerization degree 3500, saponification degree 99.8 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-4 was 73.2 mol%, the content of vinyl ester units was 0.2 mol%, and the content of vinyl alcohol units was 26.6 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 5 A polyvinyl butyral resin (PVB-5) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-5: polymerization degree 4200, saponification degree 99.9 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-5 was 69.0 mol%, the content of vinyl ester units was 0.1 mol%, and the content of vinyl alcohol units was 30.9 mol%.
- a slurry composition for a ceramic green sheet was obtained in the same manner as in Example 1 except that 8 parts by mass of polyvinyl butyral resin and 8 parts by mass of DOA as a plasticizer were added.
- Example 6 A polyvinyl butyral resin (PVB-6) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-6: polymerization degree 1700, saponification degree 99.95 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-6 was 74.25 mol%, the content of vinyl ester units was 0.05 mol%, and the content of vinyl alcohol units was 25.70 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 7 A polyvinyl butyral resin (PVB-7) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-7: polymerization degree 1700, saponification degree 99.9 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-7 was 80.6 mol%, the content of vinyl ester units was 0.1 mol%, and the content of vinyl alcohol units was 19.3 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 8 A polyvinyl butyral resin (PVB-8) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-8: polymerization degree 1700, saponification degree 99.8 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-8 was 65.2 mol%, the content of vinyl ester units was 0.2 mol%, and the content of vinyl alcohol units was 34.6 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 1 A polyvinyl butyral resin (PVB-A) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-A: polymerization degree 850, saponification degree 99.2 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-A was 71.0 mol%, the content of vinyl ester units was 0.8 mol%, and the content of vinyl alcohol units was 28.2 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 2 A polyvinyl butyral resin (PVB-B) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-B: polymerization degree 1700, saponification degree 99 mol%) was used instead of PVA-1.
- the degree of butyralization of PVB-B was 70 mol%, the content of vinyl ester units was 1 mol%, and the content of vinyl alcohol units was 29 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- Example 3 A polyvinyl butyral resin (PVB-C) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-C: polymerization degree 3500, saponification degree 98.5 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-C was 71.5 mol%, the content of vinyl ester units was 1.5 mol%, and the content of vinyl alcohol units was 27 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- a polyvinyl butyral resin (PVB-D) was obtained in the same manner as in Example 1 except that polyvinyl alcohol (PVA-D: polymerization degree 4800, saponification degree 99.9 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-D was 71.9 mol%, the content of vinyl ester units was 0.1 mol%, and the content of vinyl alcohol units was 28 mol%.
- a slurry composition for a ceramic green sheet was obtained in the same manner as in Example 1, but the slurry viscosity was high, the coating property was poor, and spots were observed in the particle dispersibility in the green sheet.
- Example 6 A polyvinyl butyral resin (PVB-F) was obtained in the same manner as in Comparative Example 5 except that polyvinyl alcohol (PVA-F: polymerization degree 1700, saponification degree 99.5 mol%) was used instead of PVA-1. .
- the degree of butyralization of PVB-F was 71.0 mol%, the content of vinyl ester units was 0.5 mol%, and the content of vinyl alcohol units was 28.5 mol%.
- a ceramic green sheet slurry composition was obtained in the same manner as in Example 1.
- the slurry compositions for ceramic green sheets prepared in Examples 1 to 8 and Comparative Examples 1 to 6 were coated on a polyester film that had been subjected to a release treatment so as to have a dry thickness of 2 ⁇ m using a coater bar. And then dried at 80 ° C. for 3 hours and then at 120 ° C. for 2 hours to obtain a ceramic green sheet.
- Green sheet evaluation A ceramic green sheet was cut out from polyethylene terephthalate in a size of 60 mm ⁇ 50 mm and left at 20 ° C. for 3 minutes, and then the side surface of the sheet was observed with an optical microscope. ⁇ : No warpage of the ceramic sheet was observed.
- Table 1 shows the results of mechanical strength evaluation and green sheet evaluation.
- a ceramic green sheet slurry composition a ceramic green sheet, and a multilayer ceramic capacitor capable of obtaining a ceramic green sheet having sufficient mechanical strength and little warpage.
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Abstract
Description
JIS K6728に記載の方法に基づき測定した。
JIS K6728に記載の方法に基づき測定した。
(ポリビニルアセタール樹脂の調製)
還流冷却器、温度計およびイカリ型攪拌翼を備えた内容積2リットルのガラス製容器に、イオン交換水1295gと、ポリビニルアルコール(PVA-1:重合度1050、けん化度99.2モル%)105gとを仕込み、全体を98℃に昇温してポリビニルアルコールを完全に溶解させ、ポリビニルアルコール水溶液(濃度7.5質量%)を形成した。形成したポリビニルアルコール水溶液を、回転速度120rpmにて攪拌し続けながら、約30分かけて5℃まで徐々に冷却した後、当該水溶液に、ブチルアルデヒド70g、および、ブチラール化触媒である酸触媒として濃度20質量%の塩酸100mlを添加して、ポリビニルアルコールのブチラール化を開始した。ブチラール化を30分間行った後、120分かけて全体を70℃まで昇温し、70℃にて180分間保持した後に、室温まで冷却した。冷却によって析出した樹脂をろ過した後、イオン交換水(樹脂に対して100倍量のイオン交換水)で複数回洗浄し、中和のために0.3質量%水酸化ナトリウム溶液を加え、70℃で5時間保持した後、遠心脱水し、さらに100倍量のイオン交換水で複数回再洗浄し、脱水したのち、40℃、減圧下で18時間乾燥し、ポリビニルブチラール樹脂(PVB-1)を得た。得られたポリビニルブチラール樹脂(PVB-1)は、ブチラール化度が71.0モル%、ビニルエステル単位の含有量が0.8モル%、ビニルアルコール単位の含有量が28.2モル%であった。
PVA-1に代わって、ポリビニルアルコール(PVA-2:重合度1700、けん化度99.6モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-2)を得た。PVB-2のブチラール化度は69.8モル%、ビニルエステル単位の含有量は0.4モル%、ビニルアルコール単位の含有量は29.8モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-3:重合度2400、けん化度99.9モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-3)を得た。PVB-3のブチラール化度は74.3モル%、ビニルエステル単位の含有量は0.1モル%、ビニルアルコール単位の含有量は25.6モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-4:重合度3500、けん化度99.8モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-4)を得た。PVB-4のブチラール化度は73.2モル%、ビニルエステル単位の含有量は0.2モル%、ビニルアルコール単位の含有量は26.6モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-5:重合度4200、けん化度99.9モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-5)を得た。PVB-5のブチラール化度は69.0モル%、ビニルエステル単位の含有量は0.1モル%、ビニルアルコール単位の含有量は30.9モル%であった。次いで、ポリビニルブチラール樹脂を8質量部、可塑剤であるDOAを8質量部添加した以外は実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-6:重合度1700、けん化度99.95モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-6)を得た。PVB-6のブチラール化度は74.25モル%、ビニルエステル単位の含有量は0.05モル%、ビニルアルコール単位の含有量は25.70モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-7:重合度1700、けん化度99.9モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-7)を得た。PVB-7のブチラール化度は80.6モル%、ビニルエステル単位の含有量は0.1モル%、ビニルアルコール単位の含有量は19.3モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-8:重合度1700、けん化度99.8モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-8)を得た。PVB-8のブチラール化度は65.2モル%、ビニルエステル単位の含有量は0.2モル%、ビニルアルコール単位の含有量は34.6モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-A:重合度850、けん化度99.2モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-A)を得た。PVB-Aのブチラール化度は71.0モル%、ビニルエステル単位の含有量は0.8モル%、ビニルアルコール単位の含有量は28.2モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-B:重合度1700、けん化度99モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-B)を得た。PVB-Bのブチラール化度は70モル%、ビニルエステル単位の含有量は1モル%、ビニルアルコール単位の含有量は29モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-C:重合度3500、けん化度98.5モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-C)を得た。PVB-Cのブチラール化度は71.5モル%、ビニルエステル単位の含有量は1.5モル%、ビニルアルコール単位の含有量は27モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-D:重合度4800、けん化度99.9モル%)を用いた以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-D)を得た。PVB-Dのブチラール化度は71.9モル%、ビニルエステル単位の含有量は0.1モル%、ビニルアルコール単位の含有量は28モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得たが、スラリー粘度が高く、塗工性が悪くグリーンシート中の粒子分散性に斑が見られた。
PVA-1に代わって、ポリビニルアルコール(PVA-E:重合度2400、けん化度99.9モル%)を用い、ブチルアルデヒドと同時にグルタルアルデヒド0.08g添加した以外は実施例1と同様にして、ポリビニルブチラール樹脂(PVB-E)を得た。PVB-Eのブチラール化度は71.9モル%、ビニルエステル単位の含有量は0.1モル%、ビニルアルコール単位の含有量は28モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
PVA-1に代わって、ポリビニルアルコール(PVA-F:重合度1700、けん化度99.5モル%)を用いた以外は比較例5と同様にして、ポリビニルブチラール樹脂(PVB-F)を得た。PVB-Fのブチラール化度は71.0モル%、ビニルエステル単位の含有量は0.5モル%、ビニルアルコール単位の含有量は28.5モル%であった。次いで、実施例1と同様にしてセラミックグリーンシート用スラリー組成物を得た。
(機械的強度の評価)
得られたセラミックグリーンシートをポリエステルフィルムから剥離し、セラミックグリーンシートの状態を観察した。
○:セラミックグリーンシートに切れや破れが観察されなかったもの
×:切れや破れがわずかでも観察されたもの
の2段階で評価した。
ポリエチレンテレフタレートからセラミックグリーンシートを60mm×50mmのサイズで切り出し、20℃で3分放置後、シートの側面を光学顕微鏡で観測した。
○:セラミックスシートの反りが認められないもの
×:セラミックスシートにわずかでも反りが認められるもの
の2段階で評価した。
Claims (3)
- 重合度が1000を超え4500以下であり、ビニルエステル単位の含有量が1モル%より少ないポリビニルアルコール樹脂をモノアルデヒドでアセタール化して得られ、アセタール化度が60~83モル%であるポリビニルアセタール樹脂、セラミック粉末、及び、有機溶剤を含有するセラミックグリーンシート用スラリー組成物。
- 請求項1記載のセラミックグリーンシート用スラリー組成物を用いて得られるセラミックグリーンシートであって、厚さが2μm以下であることを特徴とするセラミックグリーンシート。
- 請求項2記載のセラミックグリーンシートと導電ペーストとを用いて得られることを特徴とする積層セラミックコンデンサ。
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JP2011551705A JP5702311B2 (ja) | 2010-01-26 | 2010-12-15 | セラミックグリーンシート用スラリー組成物、セラミックグリーンシート及び積層セラミックコンデンサ |
KR1020127021222A KR101780839B1 (ko) | 2010-01-26 | 2010-12-15 | 세라믹 그린 시트용 슬러리 조성물, 세라믹 그린 시트 및 적층 세라믹 콘덴서 |
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JP2014141394A (ja) * | 2012-12-26 | 2014-08-07 | Murata Mfg Co Ltd | セラミックグリーンシートおよびその製造方法 |
KR101847362B1 (ko) * | 2015-07-22 | 2018-04-09 | 소에이 가가쿠 고교 가부시키가이샤 | 무기 입자 분산 페이스트용의 바인더 수지 및 무기 입자 분산 페이스트 |
CN109563001A (zh) * | 2016-07-28 | 2019-04-02 | 株式会社可乐丽 | 陶瓷生片和涂覆片 |
WO2020137290A1 (ja) * | 2018-12-25 | 2020-07-02 | 住友金属鉱山株式会社 | 導電性ペースト、電子部品、及び積層セラミックコンデンサ |
KR20210118408A (ko) * | 2019-01-29 | 2021-09-30 | 카오카부시키가이샤 | 세라믹 성형체로부터의 유기물 성분의 제거 방법 |
JP6821094B1 (ja) * | 2019-03-29 | 2021-01-27 | 積水化学工業株式会社 | セラミックグリーンシート用樹脂組成物、セラミックグリーンシート及び積層セラミックコンデンサ |
CN112028625A (zh) * | 2020-07-31 | 2020-12-04 | 深圳陶陶科技有限公司 | 氧化锆陶瓷材料及其制备方法和用途 |
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TW201144254A (en) | 2011-12-16 |
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