Inorganic dielectric powder for composite dielectric material and composite dielectric material

A dielectric material and dielectric technology, applied in fixed capacitor dielectrics, inorganic chemistry, inorganic insulators, etc., can solve the problems of difficult secondary processing, filling problems, coarse particles, etc.

Inactive Publication Date: 2007-03-21
NIPPON CHECMICAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The perovskite-type composite oxides proposed so far have proposed technical proposals using ceramized sintered products (for example, refer to Patent Documents 1 to 3), but since the sintered products are hard particles, further secondary processing is difficult. problems, and due to the coarse particles, there will also be problems in filling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 44.1 g of a 0.5 mol / kg niobium ethoxide solution (toluene solvent) was added to 750 g of titanium butoxide (titan butoxide), and stirred to prepare a complex metal alkoxide additive solution. Put 2500g of water in a 10L reaction vessel, slowly add the complex metal alkoxide solution dropwise while stirring to carry out hydrolysis. 975 g of barium hydroxide octahydrate was added to 3000 g of water, dissolved at 80° C., and this aqueous solution was added dropwise to the suspension obtained here. Heat the container, adjust the heating rate to 10°C per hour, raise the temperature to 90°C, and keep it at 90°C for 1 hour, then stop heating and stirring, and then cool down. A Buchner funnel was installed on the filter bottle, and solid-liquid separation was performed while suctioning with an aspirator. In order to make the obtained synthetic powder have a barium-rich composition, while washing with an aqueous solution added with acetic acid, adjust the molar ratio of barium ...

Embodiment 2

[0081] Put 2500g of water in a 10L reaction vessel, add 2.6g of ammonium vanadate and stir to obtain a solution. While stirring this solution, 750 g of titanium butoxide (titan butoxide) was slowly added dropwise for hydrolysis. 975 g of barium hydroxide octahydrate was added to 3000 g of water, dissolved at 80° C., and this aqueous solution was added dropwise to the suspension obtained here. Heat the container, adjust the heating rate to 10°C per hour, raise the temperature to 90°C, and keep it at 90°C for 1 hour, then stop heating and stirring, and then cool down. A Buchner funnel was installed on the filter bottle, and solid-liquid separation was performed while suctioning with an aspirator. In order to make the obtained synthetic powder have a barium-rich composition, while washing with an aqueous solution added with acetic acid, adjust the molar ratio of barium to titanium to 1.000 to 0.005, then carry out solid-liquid separation, and dry the obtained filter cake at 120°...

Embodiment 3

[0085] 1000 g of water was put into a 10 L reaction vessel, and 9 g of calcium chloride dihydrate was added to obtain a solution. A mixed solution of 715 g of titanium butoxide and 175 g of zirconium butoxide was slowly added dropwise thereto for hydrolysis. 1250 g of barium hydroxide octahydrate was added to 2500 g of water, dissolved at 80° C., and this aqueous solution was added dropwise to the suspension obtained here. Heat the container, adjust the heating rate to 30°C per hour, raise the temperature to 90°C, and keep the temperature at 90°C for 1 hour, then stop heating and stirring, and then cool down. A Buchner funnel was installed on the filter bottle, and solid-liquid separation was performed while suctioning with an aspirator. In order to make the obtained synthetic powder have a barium-rich composition, while washing with an aqueous solution added with acetic acid, adjust the ratio of the total moles of barium and calcium to the total moles of titanium and zirconi...

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Abstract

The object of the present invention is to provide a kind of inorganic dielectric powder for composite dielectric material which has high filling property and exhibits high relative permittivity when it forms a complex with polymer materials, and also provides a kind of powder which can be used as electronic components, especially printing powder. Composite dielectric material with high relative permittivity for the dielectric layer of electronic components such as circuit boards, semiconductor components, capacitors, high-frequency antennas, and inorganic EL. The inorganic dielectric powder for composite dielectric materials of the present invention is mainly used for composite dielectric materials composed of polymer materials and inorganic dielectric powders, and is characterized in that it is composed of perovskite-type powders in which subcomponent elements are solid-dissolved in barium titanate particles. Composition of composite oxide particles, and the above-mentioned perovskite composite oxide particles are perovskite composite oxide particles produced by wet reaction of titanium compounds, barium compounds and compounds containing subcomponents, and then calcining the resulting products. thing.

Description

technical field [0001] The present invention relates to an inorganic dielectric powder mainly used in a composite dielectric material composed of a polymer material and an inorganic dielectric powder, and a composite dielectric material containing the powder. Background technique [0002] In order to make electronic equipment smaller, thinner, and denser, printed wiring boards mostly use multilayer boards. The inner layer or the surface layer of the multilayer printed wiring board is provided with a high dielectric constant layer, so that the assembly density can be increased, and the electronic equipment can be made smaller, thinner, and higher in density. [0003] Conventional high dielectric constant materials use ceramic sintered bodies obtained by molding ceramic powders and firing them. Therefore, their size and shape are restricted by the molding method. In addition, since the sintered body has high hardness and high brittleness, it is difficult to freely process it,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/12H01B3/00H01G4/12C01G23/00H01G4/20H05K1/16
CPCC01P2006/12H05K1/162C01G23/006H01B3/12C01P2002/34H01G4/206C01P2006/40H05K2201/0209C01P2002/50C01G23/00H01B3/00
Inventor 田边信司成重尚昭
Owner NIPPON CHECMICAL IND CO LTD
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