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Method for producing dielectric ceramic powder and method for producing composite dielectric material

A dielectric material and ceramic powder technology, applied in the field of dielectric ceramic powder, can solve the problems that the mixture is difficult to flow into the circuit pattern and cannot form the circuit pattern, etc., and achieve the effect of excellent fluidity, excellent formability and high dielectric properties

Inactive Publication Date: 2005-11-02
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this press molding, if the mixture (resin) does not have sufficient fluidity, it will be difficult for the mixture (resin) to flow to the edge of the circuit pattern, and a correct circuit pattern may not be formed.

Method used

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  • Method for producing dielectric ceramic powder and method for producing composite dielectric material
  • Method for producing dielectric ceramic powder and method for producing composite dielectric material
  • Method for producing dielectric ceramic powder and method for producing composite dielectric material

Examples

Experimental program
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Effect test

Embodiment 1

[0079] Examples of the present invention will be described below.

[0080] Weigh SrCO 3 Powder, CaCO 3 Powder and TiO 2 The powders were made so that they became the main components shown in Fig. 3 after firing, mixed only for 16 hours with a wet ball mill, and pulverized. Next, the mixed raw material powders were calcined at 1200° C. for 2 hours.

[0081] Next, the obtained calcined product (subcomponents shown in FIG. 3 were added to a part) was pulverized by a wet ball mill for only 16 hours. After the first firing of the obtained pulverized powder under the conditions shown in FIG. ) to obtain the first pulverized product.

[0082] Next, after the 1st pulverized material was subjected to the 2nd firing under the conditions shown in FIG. 2 crushing) to obtain the second crushed product.

[0083] Next, for several kinds of second pulverized products, after the third firing under the conditions shown in Fig. 3, coarse pulverization is carried out using a mortar until it ...

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Abstract

A method for producing a dielectric ceramic powder which can secure fluidity of the mixture thereof with a resin, even when produced by milling, is provided. A composite dielectric material which secures, the fluidity of the mixture thereof with a resin and is excellent in dielectric properties can be obtained on the basis of the method for producing a dielectric ceramic powder, comprising a first firing step for firing a starting material at a first temperature to obtain a first fired substance; a first milling step for milling the first fired substance to obtain a first milled substance; a second firing step for firing the first milled substance at a second temperature lower than the first temperature to obtain a second fired substance; and a second milling step for milling the second fired substance to obtain a second milled substance.

Description

technical field [0001] The present invention relates to dielectric ceramic (also referred to as dielectric ceramic) powder, and in particular to dielectric ceramic powder capable of exhibiting high characteristics by forming a composite substrate together with an organic resin material. Background technique [0002] In recent years, miniaturization, weight reduction, and speed-up of communication equipment have been strongly demanded. Among them, the frequency range of electromagnetic waves used in portable mobile communications such as digital mobile phones and satellite communications is a high frequency range from megahertz to gigahertz (hereinafter referred to as "GHz band"). With the rapid development of communication equipment used, attempts are being made to achieve small and high-density mounting of housings, substrates, and electronic components. In order to further promote miniaturization and weight reduction of communication equipment compatible with high-frequen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/628C01B13/14C01G23/00C04B35/465C04B35/468C04B35/47C04B35/80C08K3/22H01B3/00H05K1/03
CPCC04B2235/3454C04B2235/5409C04B35/6261C04B2235/3206H05K2203/1126C04B35/803C04B35/47C01B13/145C04B2235/3215H05K2201/0209C04B2235/3213C01P2002/72C04B35/62625H05K1/0373C04B2235/661C01G23/006C04B2235/5463C04B35/4682C04B2235/3208C01P2004/61C01P2006/12C04B35/64H05K3/1291C04B2235/3436C04B35/465C04B35/6262C04B2235/5436C04B2235/3225C04B35/80A63B47/002A63B47/02A63B69/36
Inventor 金田功坂本典正
Owner TDK CORPARATION
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