WO2004065489A1 - 複合誘電体材料および基板 - Google Patents
複合誘電体材料および基板 Download PDFInfo
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- WO2004065489A1 WO2004065489A1 PCT/JP2003/017000 JP0317000W WO2004065489A1 WO 2004065489 A1 WO2004065489 A1 WO 2004065489A1 JP 0317000 W JP0317000 W JP 0317000W WO 2004065489 A1 WO2004065489 A1 WO 2004065489A1
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- Prior art keywords
- ceramic powder
- dielectric
- dielectric ceramic
- oxide
- substrate
- Prior art date
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- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
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- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 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
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-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
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 238000005563 spheronization Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0373—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/10—Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/002—Inhomogeneous material in general
- H01B3/004—Inhomogeneous material in general with conductive additives or conductive layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/12—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/024—Dielectric details, e.g. changing the dielectric material around a transmission line
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed capacitors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0206—Materials
- H05K2201/0209—Inorganic, non-metallic particles
Definitions
- the present invention relates to a composite dielectric material and a substrate suitable for use in a high frequency band.
- the frequency band of radio waves used is from mega to giga Hz band (hereinafter referred to as “GH z band”). , U) in the high frequency band.
- GH z band giga Hz band
- housings, substrates, and electronic elements have been reduced in size and density.
- materials such as substrates used for communication equipment have excellent high-frequency transmission characteristics in the GHz band (low dielectric loss). ).
- the dielectric loss is proportional to the product of the frequency, the dielectric constant ⁇ of the substrate, and the dielectric loss tangent (hereinafter referred to as ta ⁇ ). Therefore, in order to reduce the dielectric loss, it is necessary to reduce the ta ⁇ ⁇ of the substrate. Also, since the wavelength of the electromagnetic wave is reduced to 1 1 ⁇ in the substrate, the larger the dielectric constant ⁇ , the smaller the substrate can be.
- circuit boards used in small communication devices, electronic devices, and information devices used in the high-frequency band are required to have material characteristics with a high dielectric constant ⁇ and a small ta ⁇ ⁇ .
- a dielectric ceramic material As a material for such a circuit board, a dielectric ceramic material (hereinafter, the dielectric ceramic material is referred to as a “dielectric material”) is used as an inorganic material, and a fluororesin is used as an organic material.
- a substrate made of a dielectric material has excellent dielectric constant ⁇ ta ⁇ ⁇ , but has disadvantages in dimensional accuracy and workability, and is brittle. There was a problem that chipping and cracking easily occurred.
- a substrate made of an organic material such as a resin has an advantage of being excellent in formability and workability and having a small ta ⁇ ⁇ , and has a problem of having a small dielectric constant ⁇ .
- the dispersibility refers to the degree to which the dielectric powder is dispersed in the resin material, and it is desirable that the dielectric powder be more uniformly dispersed in the resin material.
- the filling property refers to the amount of the dielectric powder filled in the resin material, and the more the powder is filled in the resin material, the higher the dielectric constant can be.
- the particle size of the powder is the particle size of the powder.
- a powder produced from a liquid phase such as a precipitation method, is too fine to ensure dispersibility and filling properties for a resin material.
- the so-called pulverized powder is obtained by mixing the raw materials, drying and calcining, then pulverizing with a pulverizing device such as a ball mill, further drying with a drier, and finely pulverizing with a pulverizer such as an airflow pulverizing device. Can be obtained.
- the pulverized powder has an irregular particle shape, and dispersibility and filling property for the resin material cannot be ensured.
- the particle form is another factor for ensuring the dispersibility and filling property of the resin material.
- Japanese Patent Application Laid-Open No. 2002-158815 As a prior art focusing on the morphology of these particles, there is Japanese Patent Application Laid-Open No. 2002-158815.
- Japanese Patent Application Laid-Open No. 2002-158581 a composite dielectric material in which a dielectric having a shape (projection shape) of a circle, a flat circle, or an ellipse is dispersed in a resin, and a composite dielectric material is disclosed.
- An electronic component used is disclosed. More specifically, Japanese Patent Laid-Open Publication No.
- 2002-158581 discloses a dielectric having a projected shape of a circle having an average particle diameter of 1 to 50 ⁇ and a sphericity of 0.9. There is a description that a material having a value of ⁇ 1.0 is used.
- the term “powder” means a set of particles. When it is judged that it is appropriate to call the powder as an aggregate of particles, the term “powder” is used, and a unit constituting the powder is used. When it is deemed appropriate to call “particles” I will be a child. However, it goes without saying that since the basic units are common, there may be no difference in the actual situation. Therefore, in some cases, the expressions “powder” and “particle” can be used.
- high dielectric constant titanium oxide particles are selected as a dielectric material, and the surface of the titanium oxide particles is coated with an inorganic coating made of an inorganic hydroxide and / or an inorganic oxide. It has been proposed to disperse the applied particles in the resin to ensure dispersibility in the resin material.
- the substrate manufactured using the composite dielectric material disclosed in Japanese Patent No. 2617639 has a problem that t ⁇ in a high frequency (especially, 10 OMHz or more) band is large.
- the composite dielectric material described in Japanese Patent Application Laid-Open No. 2002-158135 when used, even if the substrate pattern has a shape that is difficult to fill the composite dielectric material, there is an advantage that the filling property is good. There is.
- the composite dielectric material disclosed in Japanese Patent Application Laid-Open No. 2002-158155 has a dielectric material content of 30 V ⁇ when the total of the resin material and the dielectric material is 100 V ⁇ 1%. If it exceeds 1%, there is a problem that the electrical resistivity drops rapidly.
- a high dielectric constant ⁇ and a low ta ⁇ ⁇ that is, a high Q value, are required.
- the content of the dielectric material needs to be at least 30 V ⁇ 1% or more.
- the electrical resistivity decreases.
- an object of the present invention is to provide a composite dielectric material having both a high dielectric constant ⁇ , a low ta ⁇ , and a high electric resistivity.
- the present invention has both of the above-mentioned characteristics, is excellent in moldability and workability, and is easily applicable to small devices. It is an object to provide a composite dielectric material and a substrate using the same. Disclosure of the invention
- the present inventor conducted various studies. As a result, it was found that the spherical dielectric ceramic powder contained an oxide of a transition metal element having a plurality of valences. Was found to be extremely effective in improving That is, the present invention relates to a composite dielectric material comprising a resin material and a substantially spherical dielectric ceramic powder mixed with the resin material, wherein the dielectric ceramic powder is BaO—R 2 0 3 - T I_ ⁇ 2 system (R: rare earth element, R 2 0 3: oxides of rare earth elements), and and the dielectric ceramic powder, little is smaller than 4 valence ions Kutomo 2 A composite dielectric material comprising an oxide of a transition metal element having the above valence state is provided.
- the dielectric ceramic powder for example, particles having a sphericity of 0.8 to 1 and desirably 0.85 to 1 can be used.
- B a 0_R 2 0 3 as a dielectric ceramic powder - With those T i 0 2 system, it is effective in improving the dielectric constant at high frequency.
- the dielectric ceramics powder is a B a O- R 2 0 3 _T i 0 2 system
- the valence of T i is four.
- the oxide of Ti easily generates oxygen vacancies and easily becomes an n-type semiconductor. Therefore, the electric resistivity can be improved by adding an additive which can easily fill the vacancies and can change the valence.
- composite dielectrics can be prepared by adding an oxide of a transition metal element in which a substantially spherical dielectric ceramic powder has a valence state of at least 2 with at least two ions having a valence of less than 4. It is a feature of the present invention to improve the electrical resistivity of the material.
- the reason why elements with multiple valences are considered is that these elements are liable to change in valence during oxidation or reduction, and are likely to fill oxygen vacancies.
- transition metal element in which an ion having a valence of less than 4 has a valence state of at least 2 examples include Mn, Cr, Fe, Co, Ni, and Cu. And Cr are preferred. Mn has five valences of 2 to 4, 6, and 7 And it is a stable element when the valence is 2 or 3, so it functions effectively as an acceptor. For the same reason, Cr, which can take four valences of 2 to 4, and 6, is also preferable as an element to be contained in the substantially spherical dielectric ceramic powder.
- the desired composition of the dielectric ceramic powder, B aO 6. 67 ⁇ 2 1. 67mo l%, R 2 ⁇ 3:. 6. 67 ⁇ 26 67mo l% , T i 0 2: 61. 66 ⁇ 76. 66 mol%.
- the specific surface area of the dielectric ceramic powder becomes as small as 1.2 m 2 / g or less (excluding 0), the electrical resistivity will decrease.
- the present inventor studied to solve this problem, and found that Mn oxide, Cr oxide, Fe oxide, Co oxide, Ni oxide and Cu oxide were added to the dielectric ceramic powder. It has been found that by including at least one oxide selected from the group consisting of (1) and (2), a decrease in electrical resistivity can be suppressed even when the dielectric ceramic powder has a small specific surface area.
- the present invention is a composite dielectric material comprising a resin material and a dielectric ceramic powder mixed with the resin material, wherein the dielectric ceramic powder comprises Mn oxide, Cr oxide, F oxide, e oxide, Co oxide, Ni oxide and at least one oxide selected from Cu oxide (hereinafter referred to as Mn oxide, Cr oxide, Fe oxide, Co oxide, N oxide i oxides and Cu oxides are sometimes collectively referred to as “Mn oxides, etc.” and have a specific surface area of 1.2 m 2 / g or less (not including 0) And a composite dielectric material as follows.
- Mn oxide is particularly preferred.
- the content of the Mn oxide is desirably 0.12 wt% or less (not including 0) in terms of MnO.
- the electrical resistivity can be maintained at a high value of 1.0 X 10 12 Q cm or more and 1.0 X 10 13 ⁇ cm or more while maintaining good dielectric properties. It becomes possible.
- a more desirable content of the Mn oxide is 0.01 to 0.1 wt%. Further, in the composite dielectric material of the present invention, by setting the dielectric ceramic powder to have a sphericity of 0.8 to 1, the filling property of the dielectric ceramic powder into the resin is improved.
- the dielectric ceramic powder has an average particle size of 0.5 to: L 0 im.
- the composite dielectric material of the present invention it is possible to obtain characteristics such that the dielectric constant ⁇ is 10 or more (measuring frequency: 2 G ⁇ ⁇ ) and the Q value is 300 or more (measuring frequency: 2 GHz). it can.
- the content of the dielectric ceramic powder is 40 Vo 1% or more and 70%. V o 1% or less.
- the Mn oxide or the like in the dielectric ceramic powder By including the Mn oxide or the like in the dielectric ceramic powder, a decrease in the electrical resistivity can be suppressed even when the content of the dielectric ceramic powder becomes 40 V o 1% or more.
- a polyvinyl benzoyl ether compound is preferable as the resin material in the composite dielectric material of the present invention.
- the present invention provides a substrate comprising a mixture of a resin material and a dielectric ceramic powder, wherein the dielectric ceramic powder is substantially spherical, and the total of the resin material and the dielectric ceramic powder is 100
- Vo is 1%
- the content of the dielectric ceramic powder is 40 Vo 1% or more and 70 Vo 1 ° / 0 or less
- the electrical resistivity of the composite dielectric material is 1.0 X providing a substrate and Toku ⁇ that is 1 0 1 2 ⁇ cm or more.
- a substrate having such characteristics can be obtained, for example, by mixing a dielectric ceramic powder containing Mn oxide or the like with a resin.
- the present invention can provide a substrate composed of a base material having projections on its surface and a composite dielectric material covering the base on which the projections are formed.
- the composite dielectric material can include a resin material and a substantially spherical dielectric ceramic powder containing Mn oxide mixed with the resin material.
- the substantially spherical dielectric ceramic powder for example, those having a sphericity of 0.8 to 1 can be used.
- the substrate of the present invention described above can be used for electronic components, and is particularly suitable as a substrate for electronic components used in the GHz band.
- the dielectric constant ⁇ of 10 or more (measurement frequency: 2GH Z), the force Q value is 300 or more (measurement frequency: 2 GHz) shows a property that.
- FIG. 1 is a flowchart showing the manufacturing process of the spherical powder
- FIG. 2 is a graph showing a change in electric resistivity with a change in the amount of dielectric ceramic
- FIG. 3 is a diagram showing a chemical formula of a polyvinyl benzyl ether compound
- FIG. 4 shows a specific example of the compound represented by the formula (1) in FIG. 3.
- FIG. 5 shows the types of additives added in the first experimental example (anneal temperature: 1100 ° C.).
- Fig. 6 shows the dielectric properties of the composite dielectric material obtained in the experimental example.
- Fig. 6 shows the types of additives added in the first experimental example (anneal temperature: 1150 ° C).
- FIG. 1 is a flowchart showing the manufacturing process of the spherical powder
- FIG. 2 is a graph showing a change in electric resistivity with a change in the amount of dielectric ceramic
- FIG. 3 is a diagram showing a chemical formula of a polyvinyl benz
- FIG. 7 is a table showing the dielectric properties of the composite dielectric material obtained in the example
- FIG. 7 is a graph showing the electrical resistivity of the composite dielectric material produced in the second experimental example
- FIG. Fig. 8 (b) is a graph showing the dielectric constant ⁇ (2 GHz) of the composite dielectric material prepared in Example 2
- Fig. 8 (b) is the composite dielectric material prepared in Example 2.
- Fig. 9 (a) is a graph showing the particle size distribution of the calcined coarse powder
- Fig. 9 (b) is a graph showing the particle size distribution of the finely ground powder
- Fig. 9 (a) c) is a graph showing the particle size distribution of the spray granules
- Fig. 9 (a) is a graph showing the particle size distribution of the spray granules
- FIG. 10 (a) is a graph showing the particle size distribution of the molten powder
- Fig. 10 (b) is a graph showing the particle size distribution of the crushed powder
- Fig. 11 the second experimental example (Ani Le temperature: 1 100 ° C) table showing the variation of dielectric characteristics Contact Yopi electric resistance rate with the addition amount of Mn CO 3 in
- FIG. 12 second experimental example (Aniru temperature : Table showing the variation of the dielectric properties and electrical resistivity with the addition amount of Mn CO 3 at 1150 ° C).
- Fig. 13 is the composition and ratio table of the dielectric ceramic powder used in the third experimental example. Table showing area, electric resistivity, etc. of the composite dielectric material produced in the third experimental example, FIG.
- FIG. 14 is a graph showing the relationship between specific surface area and electric resistivity
- FIG. FIG. 15 (b) is a diagram schematically showing a cross section of a substrate using spherical powder
- FIG. 16 is a diagram schematically showing a cross section of the substrate using spherical powder.
- 4 is a table showing characteristics and insulation resistance.
- a substantially spherical dielectric ceramic powder mixed with a resin material contains an oxide of a transition metal element in which at least two valence ions have a valence state of at least 2 or more. Is one of the features.
- the dielectric ceramic powder examples include barium titanate-based, lead titanate-based, strontium titanate-based, and titanium dioxide-based oxides.
- a barium titanate-based dielectric ceramic powder is preferable.
- B a O- R 2 0 3 _T i 0 2 system (R: rare earth element, R 2 0 3: rare earth oxides of the elements) paraelectric ceramic powder showing the tungsten bronze structure, the good at high frequency It is preferable because it shows dielectric properties.
- the rare earth element R is defined as Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu). At least one element selected.
- Nd is abundant in resources and relatively inexpensive, it is preferable to use Nd as the main component as the rare earth element R.
- B a O-R 2 ⁇ 3 - In the case of using a T i 0 2 system, B in the final composition a 0: 6. 67 ⁇ 21 67mo l% , R 2 0 3: 6 .. 67 ⁇ 26 67mo l%, T i 0 2:. 6 1. 66 ⁇ 76 66mo l%, and Do so that Shi desirable to blend in Les. Also, B a 0-R 2 0 3 -T i 0 2 system composition, optionally B i, Z r, T a , Ge, L i, B, it may also be added oxides such as M g Rere. By adding Bi, the temperature characteristics are improved and the dielectric constant ⁇ is improved. Zr, Ta, Ge, Li, B, and Mg are effective in improving the temperature characteristics. You.
- transition metal element oxides include Mn oxide, Cr oxide, Fe oxide, Co oxide, Ni oxide, and Cu oxide.
- Mn, Cr, Fe, Co, Ni, and Cu are all elements that can have multiple valences. In other words, each of these elements has a valence state in which ions having a valence of less than 4 are at least 2 or more.
- Elements such as Mn are prepared as oxide or carbonate powder. As will be described later, elements such as Mn are added before spheroidizing the dielectric ceramic powder as a base material, but since the base material is an oxide, the elements such as Mn also oxidize during melting. I will. Therefore, elements such as Mn are finally contained as oxides in the dielectric ceramic powder.
- the content of Mn oxide in the composite dielectric material shall be 0.12 wt% or less (not including 0) in terms of MnO.
- the content of the Cr oxide, the content of the Fe oxide, the content of the Co oxide, the content of the Ni oxide, and the content of the Cu oxide are respectively set as follows. Just fine.
- the electrical resistivity of the composite dielectric material is 1.0 X 10 12 ⁇ cm or more. It can be.
- the content of the Mn oxide and the like is a converted value obtained from the content of the Mn, Cr and the like after firing.
- the dielectric ceramic powder of the present invention containing Mn oxide or the like has a spherical shape of particles of 0.8 to 1 and a shape close to a true sphere.
- a method suitable for obtaining such a spherical dielectric ceramic powder will be described with reference to FIG.
- FIG. 1 is a flowchart showing a process for producing a spherical dielectric ceramic powder according to the present invention.
- a weighing step (step S101), a mixing / drying step (step S103), a calcination step (step S105), a fine pulverizing step (step S107),
- the transition is made through the slurrying step (step S109), the granulation 'spheroidizing step (step S111), the annealing step (step S113), and the agglomeration / crushing step (step S115).
- a spherical dielectric ceramic powder containing an oxide of a metal element is produced.
- the raw material powder is weighed.
- B a 0-R 2 0 3 has the composition -T i 0 2 system, and when it is desired finally to obtain a dielectric ceramics powder containing Mn oxide, B aO-as a raw material powder,
- the R compound for example, 2Nd (OH) 3
- Tio 2 and MnC ⁇ 3 are weighed respectively.
- a dispersant is added to each raw material powder weighed in the weighing step (step S101) and mixed using a ball mill or the like.
- the dispersant may be added in an amount of about 0.1 to 0.3 wt% in solid content based on the total amount of the starting raw material powder.
- the mixture to which the dispersant has been added is placed on a pad or the like and dried for about 10 to 40 hours, and then the process proceeds to the pre-baking step (Step S105).
- the mixed material to which the dispersant has been added is fired at 110 to 140 ° C for about 1 to 5 hours.
- the calcined mixed material is finely pulverized in the pulverization step (step S107) until the average particle size becomes 0.8 to 1.2 ⁇ . Note that a ball mill can also be used for fine pulverization.
- a dispersion medium of about 0.1 to 0.3 wt% in solid content is added to the finely ground mixed material, and then a mixing machine such as a ball mill or an agitator is used. And a slurry is produced.
- a mixing machine such as a ball mill or an agitator is used.
- a slurry is produced.
- water can be used as a dispersion medium, it is recommended to add a dispersant to improve the dispersibility of the starting material powder.
- a binder for mechanically bonding the starting material powders together for example, PVA (polyvinyl alcohol).
- step S111 granule powder is produced using a spray granulation method using a spray' nozzle, and this is melted in a parner furnace to produce a spherical powder.
- the slurry (slurry containing the starting material powder) prepared in the slurrying step (step S109) is sprayed with a spray nozzle or a rotating disk to form droplets.
- the spray nozzle is for atomizing the slurry and the compressed gas, and a two-fluid nozzle or a four-fluid nozzle can be used.
- the slurry discharged from the spray nozzle together with the compressed gas is atomized to form a spray.
- the particle size of the droplets during spraying can be controlled by the ratio between the slurry flow rate and the compressed gas pressure. By controlling the particle size of the droplets, the particle size of the finally obtained granular powder can be controlled.
- This heat can be provided by using the gas discharged from the spray nozzle as the heating gas, or by supplying the heating gas to the spray atmosphere. For drying, a heated gas of 100 ° C. or more may be used.
- the process of spraying and drying with a spray nozzle is performed in a predetermined chamber.
- the powder obtained by the spray mist granulation method using a spray nozzle is usually a granular powder.
- the particle size of the granule powder is controlled by the ratio of the slurry to the compressed gas as described above. Can be Small droplets can also be produced by colliding the slurries.
- the granulated powder obtained as described above is supplied into a combustion flame.
- the supplied granular powder stays for a predetermined time in the combustion flame.
- the granular powder is heat-treated. Specifically, the granular powder melts to form spherical particles.
- the granular powder is composed of particles of two or more types of elements, it reacts during melting to form a dielectric material finally obtained, for example, a dielectric material containing Mn oxide or the like.
- the granular powder supplied during the combustion flame can be supplied in a dry state, but can also be supplied in a wet state as a slurry containing the granular powder.
- the combustion gas for obtaining the combustion flame is not particularly limited.
- Known combustion gases such as LPG, hydrogen, and acetylene can be used.
- LPG low-density gas
- acetylene is used as the combustion gas
- hydrogen is used as the combustion gas.
- the temperature of the combustion flame varies depending on the type and amount of combustion gas, the ratio to oxygen, the supply amount of granular powder, and the like.
- LPG low-density polyethylene
- a temperature of up to about 210 ° C. can be obtained
- acetylene is used, a temperature of up to about 260 ° C. can be obtained.
- Granule powder is supplied using a carrier gas such as oxygen.
- a carrier gas such as oxygen.
- Use of good granular powder enhances carrier's gas transportability.
- the pulverized powder has an irregular shape and a large particle size distribution, so that the flowability is poor and the transportability is poor.
- the process proceeds to the annealing process (step S113).
- the spherical granular powder is held at a heat treatment temperature of 1000 to 1300 ° C for about 2 to 5 hours.
- the heat treatment atmosphere can be, for example, the air.
- the powders may react with each other and partially adhere.
- the agglomeration and disintegration step (step S115) is performed to eliminate this sticking.
- partially adhered powders are crushed using a ball mill or the like.
- the average particle diameter of the spherical powder obtained through the above steps S101 to S115 is about 0.1 to 50 ⁇ , and in particular, particles of about 0.5 to 10 m can be obtained. Yes (Microtrac manufactured by Nippon Seiki Co., Ltd. was used for measuring the average particle size. The same applies to the examples described later).
- the average particle size of the dielectric ceramic powder is 0.5 to 10 ⁇ . If the average particle size of the dielectric ceramic powder is less than 0.5 ⁇ m, it is difficult to obtain high dielectric properties, specifically, a dielectric constant ⁇ of 8 or more at 2 GHz, and even 10 or more. . If the average particle size of the dielectric ceramic powder is as small as less than 0.5 ⁇ , there is a disadvantage that it is difficult to knead the resin with the resin. Handling becomes difficult, as the powder particles aggregate and form a non-uniform mixture.
- the average particle size of the dielectric ceramic powder is set to 0.5 to 10 ⁇ .
- the desirable average particle diameter of the dielectric ceramic powder is 1 to 6 ⁇ , and the more desirable average particle diameter is 1 to 3 ⁇ .
- a dielectric ceramic powder having a particle sphericity of 0.8 to 1 can be obtained.
- a dielectric ceramic powder having a sphericity of 0.85 to 1, or even 0.9 to 1 can be obtained.
- the term “spherical” includes not only a perfect spherical shape with a smooth surface but also a polyhedron that is very close to a true sphere. Specifically, it includes polyhedral particles having isotropic symmetry surrounded by stable crystal planes as represented by the Wulff model and having a sphericity close to 1. Further, even particles having fine irregularities formed on the surface or particles having an elliptical cross section fall under the spherical shape in the present invention if the sphericity is in the range of 0.8 to 1. .
- “sphericity” is Wadell's practical sphericity, that is, the ratio of the diameter of a circle equal to the projected area of a particle to the diameter of the smallest circle circumscribing the projected image of the particle.
- each particle is regarded as one particle, and the sphericity is calculated.
- B a 0 as a raw material powder, R compound (eg if 2Nd (OH) 3), T i 0 2, the MnC_ ⁇ 3, an example of mixing in the mixing 'drying step (step S 103) described above, Les, such limited thereto finally Mn oxide become MnC0 3 timing added pressure.
- step SI07 prior to granulation 'spheronization step (scan Tetsupu S 1 1 1), since it is sufficient that the Mn C_ ⁇ 3 is added, for example, It is also possible to add in the pulverization step (step SI07).
- the content of the dielectric ceramic powder is 40 Vo 1% or more and 70 Vo 1 % Or less.
- the amount of the dielectric ceramic powder is less than 40 V o 1% (the amount of the resin exceeds 60 V o 1%), the filling property of the dielectric ceramic powder becomes poor, and the dielectric constant ⁇ decreases. I will. That is, the effect of containing the dielectric ceramic powder is not so much observed.
- the amount of the dielectric ceramic powder exceeds 70 V ⁇ 1% (the amount of the resin becomes less than 30 V ⁇ 1%), the fluidity during press molding becomes extremely poor, and A molded product cannot be obtained.
- the content of the dielectric ceramic powder is set to 40 V ⁇ 1% or more and 70 V ⁇ 1% or less. Desirable content of the dielectric ceramic powder is 40 to 65 VO 1%, and more preferable content of the dielectric ceramic powder is 45 to 60 VO 1%. However, the optimum content of the dielectric ceramic powder varies depending on the shape of the substrate pattern. If the shape of the substrate pattern is relatively fine, the desirable content of the dielectric ceramic powder is 45 to 55 V ⁇ about 1%.
- the dielectric ceramic powder of the present invention is spherical, the content of the dielectric ceramic powder is set to 40 V ⁇ 1% or more, and more preferably 50 V ⁇ 1% or more.
- the resin has good dispersibility in the resin material, and can be filled without impairing the fluidity of the resin material. Therefore, when the dielectric ceramic powder of the present invention is mixed with a resin material and a substrate is manufactured using this mixture, the filling amount of the dielectric ceramic powder is improved as compared with the case where the ground powder is used. As a result, a substrate having a high dielectric constant ⁇ can be obtained.
- a dielectric ceramic powder that is not spherical, for example, a pulverized powder produced by a conventional method when the content of the dielectric ceramic powder in the substrate reaches about 40 V ⁇ 1%, the resin becomes The fluidity of the material is impaired, and the content of dielectric ceramic powder in the substrate should be 45 V ⁇ 1% or more. Is very difficult. Even if 45 VO 1% or more can be filled, it becomes difficult for the dielectric ceramic powder to enter the pattern edge, etc. during substrate fabrication, and as a result, a substrate with low strength with partial voids formed would.
- FIG. 2 is a diagram showing a change in electrical resistivity with a change in the amount of dielectric ceramics.
- the final composition of the spherical powder (with MnO) is 16. 596 B a 0- 38. 863Nd 2 0 3 - 41. 702 T i 0 2 - 2. 751 B i 2 0 3 - 0. 088MnO (wt%).
- final set formed of spherical powders (no MnO) is 18. 932B aO-41 188Nd 2 0 3 - is 39. 88 T i 0 2 (wt %).
- the spherical ceramic powder containing no Mn oxide in the final composition has a dielectric ceramic content of 30 V o 1% or less, and a small amount of 1.0 X 10 12 ⁇ cm or less. Shows a high dielectric constant ⁇ . However, when the content of the dielectric ceramic powder exceeds 40 V ⁇ 1%, the electrical resistivity decreases to around 1.0 X 10 11 ⁇ cm. On the other hand, in the case of a spherical powder containing Mn oxide in the final composition, a high electric resistivity can be maintained even when the content of the dielectric ceramic powder is 50 V o 1%.
- the spherical powder containing Mn oxide in the final composition has a dielectric ceramic powder content of 40 V o 1% or more (that is, the content of the dielectric ceramic powder is higher than that of the high dielectric constant). Even if it is the amount required to obtain ⁇ ), it is possible to maintain an electrical resistivity of 1.0 X 10 12 Q cm or more, and even 1.0 X 10 13 ⁇ cm or more It turns out that it becomes.
- FIG. 2 shows an example in which Mn oxide is used as an oxide of a transition metal element in which ions having a valence smaller than 4 have a valence state of at least 2 or more.
- transition metal elements in which low-valent ions have at least two valence states, such as Cr oxide, Fe oxide, Co oxide, Ni oxide, and Cu oxide Even if you get the same effect be able to.
- the improvement in the electrical resistivity by including the force Mn oxide and the like described in the case of using the dielectric ceramic powder and the spherical powder is based on the case where the specific surface area of the dielectric ceramic powder is 1.2 m 2 Zg or less. It is remarkable. As the specific surface area of the dielectric ceramic powder decreases, the electrical resistivity tends to decrease.
- the specific surface area of the dielectric ceramic powder can be reduced by adding a predetermined amount of the Mn oxide recommended by the present application to the dielectric ceramic powder. Is less than or equal to 1.2 m 2 Zg, and even less than or equal to 1. ⁇ m 2 / g, an electrical resistivity of 1.0 ⁇ 10 12 ⁇ cm or more can be obtained.
- Organic polymer resin is desirable as the resin material.
- the organic polymer resin is a resin composition composed of one or more resins having a weight average absolute molecular weight of 1000 or more, and the sum of the number of carbon atoms and hydrogen atoms is 99% or more.
- the material is a heat-resistant low-dielectric polymer material in which some or all of the resin molecules are chemically bonded to each other.
- the reason for using a heat-resistant low-dielectric polymer material of a resin composition having a weight average absolute molecular weight of 1000 or more is to obtain sufficient strength, adhesion to metal, and heat resistance. If the weight average absolute molecular weight is less than 1000, mechanical properties and heat resistance will be insufficient. .
- the reason why the sum of the number of atoms of carbon and hydrogen is 99% or more is to make the existing chemical bond a non-polar bond, thereby easily obtaining a high Q value.
- the sum of carbon and hydrogen atoms is less than 99%, especially when the number of atoms forming polar molecules such as oxygen atoms and nitrogen atoms is more than 1%, the Q value is small. It will be connected.
- Particularly preferred weight average absolute molecular weight is 3000 or more, more preferably 500
- the upper limit of the weight average absolute molecular weight at this time is not particularly limited. It is always around 1,000,000.
- organic polymer resin examples include low-density polyethylene, ultra-low-density polyethylene, ultra-low-density polyethylene, high-density polyethylene, low-molecular-weight polyethylene, ultra-high-molecular-weight polyethylene, ethylene-propylene copolymer, and polypropylene.
- Non-polar ⁇ -olefins such as pyrene, polybutene, poly 4-methylpentene, etc.
- (co) polymer [hereafter, also referred to as (co) polymer], butadiene, isoprene, pentadiene, hexadiene, hexadiene, octadiene, fue (Co) polymer, styrene, nucleus-substituted styrene, such as methyl styrene, dimethylol styrene, ethynylene styrene, isopropynole styrene, chlorostyrene, ⁇ —Substituted styrene, for example ⁇ -methyl Resuchiren, alpha-Echinoresuchiren, divinyl - Norebenzen, hexane and the like of each monomer of the carbon ring-containing vinyl (co) polymers, and the like to Bininoreshikuro.
- the resin used in the present invention is a polybibenzylbenzyl compound.
- Ri represents a methyl group or an ethyl group.
- R 2 represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms.
- the hydrocarbon group represented by R 2 is an alkyl group, an aralkyl group, an aryl group, and the like, each of which may have a substituent.
- Examples of the alkyl group include a methyl group, an ethyl group, a propyl group, and a butyl group.
- the aralkyl group includes a benzyl group and the like, and the aryl group includes a phenyl group and the like.
- R 3 represents a hydrogen atom or a benzyl group, and the hydrogen atom is derived from the starting compound when synthesizing the compound of the formula (1), and the molar ratio of the hydrogen atom to the vinyl benzyl group is 60: 4. 0 to 0: 100 is preferable, and 40: 60 to 0: 100 is more preferable.
- n is a number of 2 to 4.
- the curing reaction for obtaining the dielectric can be sufficiently advanced, and Dielectric properties can be obtained.
- the curing reaction does not proceed sufficiently, and it becomes difficult to obtain sufficient dielectric properties.
- the polybutylbenzyl ether compound of the present invention may be used alone or in combination of two or more. Further, the polyvinyl benzyl ether compound of the present invention may be used by polymerizing it alone as a resin material, or may be used by being copolymerized with another monomer, and further used in combination with another resin. be able to.
- copolymerizable monomer examples include styrene, vinyl toluene, divinyl benzene, divinyl benzyl ether, aryno phenol, arylene oxybenzene, diaryl phthalate, acrylate, ester methacrylate, and butyl pyrrolidone. Can be Proportion of these monomers, with respect to polyvinylidine Le benzyl ether compound, 2 to 5 0 mass 0/0 approximately.
- thermosetting resins such as vinyl ester resins, unsaturated polyester resins, maleimide resins, polyphenol polyacrylate resins, epoxy resins, phenol resins, and vinylbenzyl compounds.
- resins and thermoplastic resins such as polyether imide, polyether sulfone, polyacetal, and dicyclopentadiene resin.
- the compounding ratio is about 5 to 90% by mass based on the polybutylbenzyl ether compound of the present invention.
- Particularly preferred is at least one selected from the group consisting of vinyl ester resins, unsaturated polyester resins, maleimide resins, polyphenolic polyacrylate resins, epoxy resins, and mixtures thereof.
- Curing can be performed by a known method. Curing can be in the presence or absence of a curing agent.
- a curing agent for example, known radical polymerization initiators such as benzoyl peroxide, methyl ethyl ketone peroxide, dicumyl peroxide, and t-ptinoleperbenzoate can be used. The amount used is 10 parts by mass or less based on 100 parts by mass of the polyvinyl benzyl ether compound.
- the curing temperature varies depending on whether or not a curing agent is used and the type of the curing agent, but is set at 20 to 250 ° C, preferably 50 to 250 ° C for sufficient curing. .
- Hydroquinone, benzoquinone, copper salts and the like may be added for adjusting the curing.
- a reinforcing material can be added to the resin in the present invention.
- Reinforcing materials are effective in improving mechanical strength and dimensional stability, and when manufacturing a circuit board, a predetermined amount of reinforcing material is usually added to a resin.
- the reinforcing material examples include non-fibrous reinforcing materials such as fibrous, plate-like, and granular materials.
- fibrous reinforcing material glass fiber, alumina fiber, aluminum borate fiber, ceramic fiber, silicon carbide fiber, asbestos fiber, gypsum fiber, brass fiber, stainless steel fiber, steel fiber, metal fiber, magnesium borate or magnesium borate
- fibers include inorganic fibers and carbon fibers, such as fibers of potassium titanate, or fibers thereof, zinc oxide whiskers, and polyethylene fibers, aromatic polyamide fibers, aramide fibers, and polyimide fibers.
- a fibrous reinforcing material a so-called impregnation method described in JP-A-2001-187831, etc. can be employed.
- a sheet-like fibrous reinforcing material may be immersed in a coating tank in which the dielectric ceramic powder and the resin are adjusted to a slurry state.
- Non-fibrous reinforcing materials include silicates such as wollastenite, sericite, kaolin, myriki, clay, bentonite, asbestos, tanolek, anoremina silicate, pyrophyllite and montmorillonite, and molybdenum disulfide.
- silicates such as wollastenite, sericite, kaolin, myriki, clay, bentonite, asbestos, tanolek, anoremina silicate, pyrophyllite and montmorillonite, and molybdenum disulfide.
- reinforcing materials may be used alone or in combination of two or more.
- a silane-based resin can be pretreated with a titanium-based coupling agent before use.
- Particularly preferred reinforcements are glass fibers.
- the type of glass fiber is not particularly limited as long as it is generally used for reinforcing a resin.For example, long fiber type ⁇ short fiber type chopped strand, chopped strand mat, continuous long fiber mat, woven fabric, knitted fabric, etc. Glass, mill fiber, etc. can be selected and used.
- the content of the reinforcing material in the composite dielectric material is preferably in the range of 10 to 30 wt%. A more preferred content of the reinforcing material is 15 to 25 wt%.
- the composite dielectric material of the present invention preferably follows the following manufacturing method. First, according to the method described above, a dielectric ceramic powder having a spherical particle shape (or a specific surface area of 1.2 m 2 / g or less) and containing Mn oxide and the like is obtained. Then, a predetermined amount of the dielectric ceramic powder having a spherical particle shape (or a dielectric ceramic powder having a specific surface area of 1.2 m 2 / g or less) and a predetermined amount of the resin are mixed and mixed. The mixing can be carried out, for example, by dry mixing, but it is desirable that the mixing is sufficiently carried out in an organic solvent such as toluene or xylene using a ball mill or a stirrer.
- an organic solvent such as toluene or xylene
- the slurry is dried at 90 to 120 ° C. to obtain a lump of dielectric ceramic powder and resin. This mass is pulverized to obtain a mixed powder of dielectric ceramic powder and resin.
- a granule manufacturing apparatus such as a spray dryer.
- the average particle size of the mixed powder may be about 50 to 100 m.
- the mixed powder was pressed into a desired shape at 100 to 150 ° C.
- the molded article is cured at 100 to 200 ° C. for 30 to 900 minutes. In this curing, the above-mentioned reinforcing material may be present.
- the dielectric ceramic powder is preferably mixed before the polymerization or curing of the resin such as a polyvinyl benzyl ether compound. Good. However, mixing of the dielectric ceramic powder after it is completely cured is not desirable.
- the composite dielectric material of the present invention can be used in various forms, such as as a film, as a molded body having a Balta shape or a predetermined shape, and as a lamination in a film shape. Therefore, various substrates for high-frequency electronic devices and electronic components (resonators, filters, capacitors, inductors, antennas, etc.), filters as chip components (for example, C filters that are multilayer substrates) and resonators (for example, triple-type resonance) Or a support for a dielectric resonator, etc., as well as a housing (eg, antenna rod housing) for various substrates or electronic components, a casing, or an electronic component or its housing / casing.
- resonators filters, capacitors, inductors, antennas, etc.
- filters as chip components for example, C filters that are multilayer substrates
- resonators for example, triple-type resonance
- a support for a dielectric resonator, etc. as well as a housing (eg, antenna
- Substrates are expected to be used as substitutes for conventional glass epoxy substrates, and specifically include on-board boards for mounting components, Cu-clad laminates, and metal base / metal core boards. Furthermore, it can be used for a circuit-containing board and an antenna board (such as a patch antenna). It can also be used for on-board substrates for CPU.
- the electrodes are formed by pressing the powder with a metal foil such as Cu and curing it while pressing, or by attaching a metal foil such as a Cu foil on one or both surfaces before complete curing. Hardening while pressing, or pre-curing by applying a metal foil with a press, and then proceeding with hardening by a separate heat treatment.After hardening the molded product, metal deposition and sputtering It can be performed by electroplating or application of (resin) electrode.
- the composite dielectric material of the present invention and the substrate using the same can be suitably used in the GHz band, and when the frequency band is 2 GHz, the dielectric constant ⁇ is 10 or more, and 300 or more. Can have a Q value of Moreover, these It can have an electrical resistivity of 1.0 ⁇ 10 12 ⁇ cm or more while maintaining high dielectric properties.
- B a C0 3, T i 0 2 and N d 2 0 3 powder was 1. 5 kg prepared in a total amount, were mixed in pure water to prepare a 60% concentration slurry.
- a dispersing agent product name: A-30 SL (10% solution) manufactured by Toa Gosei Co., Ltd.
- A-30 SL (10% solution) manufactured by Toa Gosei Co., Ltd. was added to 2.5 kg of the slurry, and 30 cc of the slurry was added. Mix for hours.
- the mixed material was dried for 24 hours, and calcined in air at 1225 ° C. for 2 hours to obtain a dielectric ceramic material.
- This dielectric ceramic material was made into a slurry having a concentration of 60% using water, and finely pulverized with a ball mill so as to have an average particle diameter of 0.4 to 1.5 im. Then, this was dried to obtain a dielectric ceramic powder. With the addition of M n CO 3 0. 025 ⁇ 0. 2 wt% as an additive to the powder, water was added to prepare a 60% concentration slurry. Further, 200 cc of a PVA (polyvinyl alcohol) solution (product name: PVA205C (15% solution) manufactured by Kuraray Co., Ltd.) and 40 cc of the above-mentioned dispersant are added to 3.1 kg of the slurry, and the mixture is ball milled.
- PVA polyvinyl alcohol
- spherical dielectric ceramic powder was produced by applying the above-described method.
- the conditions for setting of spray / dryer and Pana furnace, annealing and release are as follows.
- the average particle size of the finally obtained powder was 3.8 to 4.9 ⁇ m, and the sphericity of the particles constituting the powder reached 0.85 to 0.92.
- the composition of the spherical dielectric ceramic powder was analyzed. And where, B a 0, Nd 2 0 3, T i O 2 and Mn O that are contained sure i " ⁇
- N 2 amount 20 L / min (for transferring granules)
- Spherical dielectric ceramic powder was produced under the same conditions as in Example 1 except that Si 2 was added instead of MnC 3 as an additive.
- a spherical dielectric ceramic powder was prepared under the same conditions as in Example 1 except that the additive was not added.
- the dielectric constant ⁇ (2 GHz) of each of the five types of composite dielectric materials was measured by the cavity resonator method (perturbation method) (Scalar Synthesizer Wiper 8362 OA, Network Analyzer 87, Hewlett-Packard Co., Ltd.) 57 C). Furthermore, the Q value was determined. Figure 5 shows the results. The electrical resistivity was measured using Ultra High Resistance Meter Advantest R 834 OA manufactured by Hewlett-Packard Co., Ltd. Figure 5 also shows the results.
- the first example and the comparative examples 1 to 3 with the additive show higher electric resistivity than the comparative example 4 with the additive.
- the sample with Mn CO 3 added as an additive (first example) ⁇
- the amount added was as small as 0.15 wt%. Nevertheless, it is noted that it exhibits the highest electrical resistivity of 5.5 ⁇ 10 13 ⁇ cm.
- this sample (Example 1) also has a good dielectric property, having a dielectric constant ⁇ of 10.71 and a Q value of 304 at 2 GHz.
- annealing was performed under the condition of baking in air at 1000 ° C. for 4 hours.
- examples in which the annealing conditions were set as follows and dielectric ceramic powders were produced are shown as a second example and comparative examples 5 to 8.
- the annealing conditions were as follows: firing at 1100 ° C for 4 hours in air. Except for the above, the second embodiment is performed in the same manner as the first embodiment.
- Comparative Example 5 corresponds to Comparative Example 1
- Comparative Example 6 corresponds to Comparative Example 2
- Comparative Example 7 corresponds to Comparative Example 3
- Comparative Example 8 corresponds to Comparative Example 4, except for the annealing condition.
- Resins were mixed with the spherical powders produced in the second example and comparative examples 5 to 8, respectively, to obtain five types of composite dielectric materials.
- the content of the dielectric ceramic powder in the composite dielectric material was 50 vol 1%, and the resin used was a polybutylbenzyl ether compound represented by the formula (1).
- FIG. 6 shows the results.
- the electric resistivity was measured by the same method as described above.
- Figure 6 also shows the results.
- FIG. 6 shows the dielectric constant ⁇ (2GH ⁇ ), the Q value, and the electric resistivity of the first embodiment and comparative examples 1 to 4.
- the sample was added M n C_ ⁇ 3 as an additive (a second embodiment), the dielectric constant ⁇ is the 12. 10, Q values 355 at 2 GHz, good dielectric characteristics Indicated.
- the electric resistivity was 9.9 ⁇ 10 13 Q cm, which was higher than that in the case where the annealing temperature was 1000 ° C. (first embodiment).
- MnC0 3 added amount is 0. 05wt% of (Mn O amount in the analysis values after firing: 0. 03 wt%), 0. 1 wt% (Mn O amount in the analysis values after firing: 0. 06 wt %), 0.15 wt% (Mn O content in the analysis value after firing: 0.09 wt%), 0.2 wt% (Mn O content in the analysis value after firing: 0.12 wt%) As it increased, the electrical resistivity also increased. When the added amount of Mn CO 3 is 0.1 wt% or more (the amount of Mn O in the analysis value after firing: 0.06 wt%), the electrical resistivity is as good as 1.0 X 10 14 ⁇ cm or more. The value was shown.
- MnCO 3 is an effective additive for improving the electrical resistivity, and that the electrical resistivity increases in proportion to the amount of Mn CO 3 added.
- the effect of the addition was also remarkable when the amount of MnO in the analysis value after firing was only 0.015 wt%. Therefore, even when the content of the Mn oxide in the dielectric ceramic powder is as small as about 0.01 wt%, it is considered that the effect of improving the electrical resistivity by the Mn oxide can be enjoyed.
- the added MnCO 3 (molecular weight 114.94) is melted and spheroidized with other raw material powders, and becomes MnO (molecular weight 70.94).
- MnO amount in the final analysis can be calculated by dividing the amount of MnC0 3 in l. 62. Then, 0. lw t% the amount of MnC_ ⁇ 3, 0. 3 wt%, 1. for the composite dielectric material using a dielectric ceramic powder was 0 wt%, the dielectric constant in a way similar to that described above ⁇ (2 GHz) and Q value were measured.
- Fig. 8 (a) shows the measurement results of the dielectric constant ⁇ (2 GHz)
- Fig. 8 (b) shows the measurement results of the Q value.
- the dielectric constant ⁇ (2 GHz) and the Q value of the sample to which MnCO 3 was not added are also shown in FIGS. 8 (a) and 8 (b).
- the dielectric constant ⁇ is gradually reduced, the amount of M n C Omicron 3 is 1. 0 wt% (after firing When the amount of MnO in the analysis value is 0.62wt%), it drops to about 11. Cowpea Te, 1 1.2 or more, in order to further obtain a dielectric constant of about 1 1. 5 epsilon is the amount of MnC0 3 0. 3 wt% (MnO content in the analysis value after firing: 0. 19 wt%) is considered to be effective.
- the 1 1 A dielectric constant ⁇ of 2 or more and a Q value of 345 or more can be obtained.
- 0. 3 wt% the amount of MnC_ ⁇ 3 below, i.e. amount of MnO in the final analysis 0. 1 9 wt% It is preferable to make the following.
- the more desirable content of MnO is 0.12 wt% or less (excluding 0), and the more desirable content of MnO is 0.01 to 0.1 wt%.
- FIGS. 9 and 10 show the observation results of the particle size distribution in each step when producing the spherical powder.
- Fig. 9 (a) shows the particle size distribution of the calcined coarse powder after the calcination step (step S105) shown in Fig. 1, and
- Fig. 9 (b) shows the fine pulverization step (Fig. 1).
- the particle size distribution of the finely pulverized powder after step S107) shows the particle size distribution of the spray granules produced in the granulation and spheroidization process (step S111) shown in Fig. 1.
- FIG. 9 (a) shows the particle size distribution of the calcined coarse powder after the calcination step (step S105) shown in Fig. 1
- Fig. 9 (b) shows the fine pulverization step (Fig. 1).
- the particle size distribution of the finely pulverized powder after step S107) shows the particle size distribution of the spray granules produced in the granulation and sphe
- FIG. 10 (a) shows the particle size distribution of the molten powder melted in the granulation and spheroidizing process (step S111) shown in FIG. 1, and FIG. 10 (b) shows the particle size distribution shown in FIG.
- the particle size distribution of the crushed powder after the agglomerated crushing step (step S115) is shown.
- 10% means 10% diameter.
- the term “10% diameter” refers to the particle diameter at which the cumulative curve becomes 10% when the cumulative carp is determined with the total volume of the measured powder being 100%.
- “50%” means the 50% diameter
- “100%” means the 100% diameter, and the particle at the point where the cumulative curves are 50% and 100%, respectively.
- peak indicates the peak value of the accumulated carp.
- Fig. 11 and Fig. 12 show these respectively.
- Fig. 11 shows the characteristics of the sample when the anneal condition was kept at 1100 ° C for 4 hours
- Fig. 12 shows the characteristics of the sample when the anneal condition was kept at 1150 ° C for 4 hours. Is shown.
- the electrical resistivity also showed a high value of 2.0 ⁇ 10 13 ⁇ cm or more when the annealing temperature was 1100 ° C. or 1150 ° C.
- the change in electric resistivity due to the amount of Mn CO 3 a peak was not observed, looking at the first 1 view and FIG. 12, ⁇ of Mn C0 3 [pi It can be seen that when the amount is 0.15 wt% (MnO amount in the final analysis value: 0.09 wt%), the highest electrical resistivity is exhibited. Therefore, when mixing the MnC_ ⁇ 3 in milling step (Step S 107), it MnO content in the dielectric ceramic powder, 0. 05 ⁇ 0. 25w t%, more 0. 01-0.
- the raw material powder was blended to obtain the composition shown in Fig. 13, and 17 types of dielectric ceramic A mixed powder was prepared.
- a resin was mixed with each dielectric ceramic powder to obtain 17 types of composite dielectric materials.
- the sample No. 14 shown in the first FIG. 3, for the samples No. 1 7 was added respectively Mn C0 3, B i 2 0 3 as an additive after crushing.
- Fig. 14 shows the relationship between the specific surface area and the electrical resistivity.
- a dielectric material having the above composition was ground using a pole mill to obtain a crushed powder (dielectric ceramic powder) having an average particle size of 2 ⁇ .
- a resin was mixed with the spherical powder and the ground powder to obtain a composite dielectric material.
- the content of the dielectric ceramic powder in the composite dielectric material was 50 vo 1% for both the spherical powder and the crushed powder, and a polyvinyl benzyl ether compound represented by the formula (1) was used as the resin.
- Sample 1 the flowability of the composite dielectric material using spherical powder
- Sample 2 it is composed of glass epoxy resin. Create a pattern on the base material, sample 1, sample
- the temperature was raised from room temperature to 150 ° C. and maintained for 30 minutes. Thereafter, the temperature was raised to 195 ° C. and maintained for 3 hours.
- FIG. 15 (a) voids were confirmed near the pattern edge in the substrate fabricated using sample 2.
- FIG. 15 (b) it was confirmed that in the case of using sample 1, that is, the spherical powder, spherical particles entered even near the pattern edge. From the above results, it was found that the composite dielectric material using the spherical powder according to the present invention had good flowability.
- the dielectric constant ⁇ (2 GHz) of the substrate manufactured using the composite dielectric material of the present invention was measured by the cavity resonator method (perturbation method) (Hewlett-Packard method).
- the substrate produced using the composite dielectric material of the present invention exhibited a high electrical resistivity of 4.5 ⁇ 10 13 ⁇ cm.
- this substrate shows a dielectric constant ⁇ of 11 or more and a Q value of 350 or more, showing good dielectric properties.
- the present invention it is possible to obtain a composite dielectric material having both a high dielectric constant ⁇ and a high Q value and a high electric resistivity. According to the present invention, for example, it is possible to obtain a composite dielectric material having good dielectric properties and electric resistivity, excellent in moldability and workability, and easily applicable to small devices, and a substrate using the same.
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Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03768356A EP1589073A4 (en) | 2003-01-24 | 2003-12-26 | DIELECTRIC COMPOSITE MATERIAL AND SUBSTRATE |
US10/535,477 US20060211800A1 (en) | 2003-01-24 | 2003-12-26 | Composite deelectric material and substrate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003016741A JP3930814B2 (ja) | 2003-01-24 | 2003-01-24 | 複合誘電体材料および基板 |
JP2003-16741 | 2003-01-24 |
Publications (1)
Publication Number | Publication Date |
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WO2004065489A1 true WO2004065489A1 (ja) | 2004-08-05 |
Family
ID=32767499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/017000 WO2004065489A1 (ja) | 2003-01-24 | 2003-12-26 | 複合誘電体材料および基板 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060211800A1 (ja) |
EP (1) | EP1589073A4 (ja) |
JP (1) | JP3930814B2 (ja) |
KR (1) | KR100687180B1 (ja) |
CN (1) | CN100497484C (ja) |
WO (1) | WO2004065489A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102477209A (zh) * | 2011-04-28 | 2012-05-30 | 深圳光启高等理工研究院 | 一种超材料介质基板的加工方法 |
CN104157951B (zh) * | 2012-11-27 | 2016-08-17 | 张家港保税区灿勤科技有限公司 | 通信基站波导滤波器的制造方法 |
EP2957602A4 (en) | 2013-02-15 | 2016-09-28 | Mitsubishi Gas Chemical Co | RESIN COMPOSITION FOR MATERIALS WITH HIGH DIELECTRIC CONSTANT, MOLDED ARTICLE CONTAINER AND MIXTURE MASTER FOR COLORING |
CN103387704B (zh) * | 2013-08-02 | 2015-12-02 | 清华大学 | 一种陶瓷-聚合物复合微波材料及其制备和应用方法 |
CN107428620B (zh) * | 2015-03-27 | 2020-09-18 | 株式会社村田制作所 | 电介质材料的制造方法 |
WO2018056106A1 (ja) * | 2016-09-26 | 2018-03-29 | パナソニックIpマネジメント株式会社 | ミリ波反射用樹脂組成物、それを用いた樹脂シート、繊維及びミリ波反射用物品 |
CN106816821A (zh) * | 2017-04-01 | 2017-06-09 | 林愿 | 一种绝缘高防爆园林用高压配电箱设备 |
EP4249557B1 (en) | 2020-11-17 | 2024-12-04 | Asahi Kasei Kabushiki Kaisha | Component for communication devices |
CN116615493A (zh) | 2021-08-05 | 2023-08-18 | 旭化成株式会社 | 天线部件 |
CN114751733B (zh) * | 2022-04-25 | 2023-03-21 | 中国振华集团云科电子有限公司 | 一种具备低温度系数球形陶瓷填料生产方法 |
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JPH05234420A (ja) * | 1991-12-28 | 1993-09-10 | Tdk Corp | 誘電体セラミック材料および多層セラミック部品 |
JPH0869712A (ja) * | 1994-08-29 | 1996-03-12 | Kyocera Corp | 樹脂−セラミックス複合材及びこれを用いた電子部品用配線板 |
JPH0931006A (ja) * | 1995-07-24 | 1997-02-04 | Showa Highpolymer Co Ltd | ポリビニルベンジルエーテル化合物およびその製造方法 |
EP1113459A2 (en) * | 1999-12-28 | 2001-07-04 | TDK Corporation | Composite dielectric material containing ceramic powders and substrate coated with this material |
EP1262450A1 (en) * | 2001-05-31 | 2002-12-04 | TDK Corporation | Method for manufacturing single crystal ceramic powder, and single crystal ceramic powder, composite material, and electronic element |
JP2003213146A (ja) * | 2001-10-24 | 2003-07-30 | Furukawa Electric Co Ltd:The | 樹脂−セラミックス粉末複合材 |
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JPS5918160A (ja) * | 1982-07-20 | 1984-01-30 | 三菱鉱業セメント株式会社 | 誘電体磁器組成物 |
US4540676A (en) * | 1984-05-23 | 1985-09-10 | Tam Ceramics | Low temperature fired dielectric ceramic composition with flat TC characteristic and method of making |
GB2284416B (en) * | 1993-12-02 | 1997-09-17 | Kyocera Corp | Dielectric ceramic composition |
JP2002158135A (ja) * | 2000-11-16 | 2002-05-31 | Tdk Corp | 電子部品 |
JP2002355544A (ja) * | 2001-05-30 | 2002-12-10 | Tdk Corp | 球状セラミックス粉末の製造方法、球状セラミックス粉末および複合材料 |
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2003
- 2003-01-24 JP JP2003016741A patent/JP3930814B2/ja not_active Expired - Fee Related
- 2003-12-26 WO PCT/JP2003/017000 patent/WO2004065489A1/ja active Application Filing
- 2003-12-26 US US10/535,477 patent/US20060211800A1/en not_active Abandoned
- 2003-12-26 EP EP03768356A patent/EP1589073A4/en not_active Withdrawn
- 2003-12-26 CN CNB2003801011978A patent/CN100497484C/zh not_active Expired - Fee Related
- 2003-12-26 KR KR1020057005940A patent/KR100687180B1/ko not_active Expired - Fee Related
Patent Citations (6)
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JPH05234420A (ja) * | 1991-12-28 | 1993-09-10 | Tdk Corp | 誘電体セラミック材料および多層セラミック部品 |
JPH0869712A (ja) * | 1994-08-29 | 1996-03-12 | Kyocera Corp | 樹脂−セラミックス複合材及びこれを用いた電子部品用配線板 |
JPH0931006A (ja) * | 1995-07-24 | 1997-02-04 | Showa Highpolymer Co Ltd | ポリビニルベンジルエーテル化合物およびその製造方法 |
EP1113459A2 (en) * | 1999-12-28 | 2001-07-04 | TDK Corporation | Composite dielectric material containing ceramic powders and substrate coated with this material |
EP1262450A1 (en) * | 2001-05-31 | 2002-12-04 | TDK Corporation | Method for manufacturing single crystal ceramic powder, and single crystal ceramic powder, composite material, and electronic element |
JP2003213146A (ja) * | 2001-10-24 | 2003-07-30 | Furukawa Electric Co Ltd:The | 樹脂−セラミックス粉末複合材 |
Non-Patent Citations (1)
Title |
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See also references of EP1589073A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20060211800A1 (en) | 2006-09-21 |
EP1589073A4 (en) | 2008-01-23 |
EP1589073A1 (en) | 2005-10-26 |
KR100687180B1 (ko) | 2007-02-26 |
CN1703463A (zh) | 2005-11-30 |
KR20050092693A (ko) | 2005-09-22 |
JP3930814B2 (ja) | 2007-06-13 |
CN100497484C (zh) | 2009-06-10 |
JP2004224983A (ja) | 2004-08-12 |
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