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Conductive paste composition, conductive paste and its preparation

一种组合物、金属粒子的技术，应用在导电粘合剂、分散在不导电无机材料中的导电材料、导电涂料等方向，能够解决导电糊混合分散花费的时间长、工作效率低、繁杂等问题，达到提高可靠性及合格率、缩短作业时间、提高工程效率的效果

Inactive Publication Date: 2009-01-21
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to separate the metal aggregated particles from the original metal particles, it takes a long time to mix and disperse when preparing the conductive paste, which will inevitably lead to low work efficiency and increased costs
[0008] In addition, in the past, the conductive paste was mixed with metal powder, carrier and organic solvent, and then kneaded and dispersed with three rolls. When using three rolls for dispersion operation, it was accompanied by various dangers from the perspective of mechanical structure, and the operation itself also required A certain degree of proficiency, so there are many and complicated places that need to be properly managed during preparation, and the scattered work takes a long time, resulting in an increase in cost

Method used

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  • Conductive paste composition, conductive paste and its preparation
  • Conductive paste composition, conductive paste and its preparation
  • Conductive paste composition, conductive paste and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. The preparation method of the composition for conductive paste

[0026] The Ni metal particles obtained by the gas-phase chemical reaction method were washed with water to obtain a specific surface area of ​​1.7m 2 / g of Ni metal particles and water in slurry. The slurry contained 80 parts by weight of water relative to 100 parts by weight of Ni metal particles.

[0027] With respect to the above slurry, 0.2-0.7 parts by weight of the mixed solvent butyl carbitol is used to coagulate and precipitate Ni metal particles and separate water. The thus obtained slurry contains 5 to 10 parts by weight of water relative to 100 parts by weight of Ni metal particles. Therefore, in order to promote the separation of water, 0.2-2.5 parts by weight of solvent butyl carbitol is added to the slurry for mixing, and then the slurry is dried. A Ni metal particle composition in which butyl carbitol remained on the obtained dried Ni metal particles was obtained. figure 1 The schema...

Embodiment 2

[0043] a. Preparation method of metal particle-containing composition

[0044] Wash the Ag metal particles obtained by the precipitation reduction method with water to obtain a particle with a specific surface area of ​​3.6m 2 / g of Ag metal particles and water in slurry. The slurry contained 80 parts by weight of water with respect to 100 parts by weight of the Ag metal particles.

[0045] For the above slurry, 0.4-1.4 parts by weight of butyl carbitol is mixed with a solvent to coagulate and precipitate Ag metal particles and separate water. The thus obtained slurry contains 5 to 10 parts by weight of water with respect to 100 parts by weight of the Ag metal particles. For this reason, in order to further promote the separation of water, add 0.4~5 parts by weight of mixed solvent butyl carbitol to the slurry, and then dry it, so as to obtain the composition containing Ag metal particles, on the dried Ag metal particles Butyl carbitol remained.

[0046] b. Preparation met...

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Abstract

A composite substance for forming a conductive paste, comprises a solvent and metal or metal compound particles. The solvent is compatible with an organic component included in the conductive paste, and the metal or metal compound particles are dried metal or metal compound particles having the second solvent adhering to the surface thereof. The conductive paste comprises an organic vehicle, a solvent, and the composite substance which is mixed with the organic vehicle and the solvent. The method for manufacturing the composite substance comprises the steps of washing metal or metal compound particles with water, adding a solvent that is compatible with an organic component included in the conductive paste, thereby replacing water components, and drying the metal or metal compound particles having the solvent adhering to the surface thereof.

Description

technical field [0001] The invention relates to a composition for conductive paste, a conductive paste and a preparation method thereof. Background technique [0002] In recent years, along with miniaturization of electronic instruments, miniaturization of electronic devices used in such instruments is also required. In particular, functional components such as inductors, capacitors, and filters using ceramics can be improved in their characteristics through a multilayer laminated structure, and at the same time, they can be miniaturized. [0003] The preparation steps of this layered part are: mixing ceramic powder with an organic carrier, printing a conductive paste as an electrode on a substrate made by sheet method or printing method, after lamination, pressure coating and shearing steps , fired, and then form the external electrodes. Conductive paste is formed by dispersing specified metal powder in organic vehicle and organic solvent. [0004] Various methods such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22C09D5/24C09C1/00C09C1/62C09C3/08C09J9/02H01B13/00H01L23/498H05K1/09
CPCH05K1/092H01L2924/0002H01L23/49883H01B1/22Y10T428/29H01L2924/00C09D5/24
Inventor 丸野哲司小田和彦佐佐木昭田中公二
Owner TDK CORPARATION