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Conductive paste, electronic parts, and multilayer ceramic capacitors

A technology of conductivity and paste, which is applied in the field of electronic components, multilayer ceramic capacitors, and conductive paste, can solve the problems of inability to form thickness and increase in viscosity, and achieve excellent printability and excellent viscosity stability.

Active Publication Date: 2020-06-02
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The conductive paste used to form the internal electrode layer has a problem that its viscosity tends to increase over time
Therefore, although a predetermined thickness can be formed on the ceramic green sheet with a desired viscosity at the beginning of printing, the viscosity increases after a predetermined time, and the same thickness under the printing conditions at the beginning of printing may not be formed.

Method used

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  • Conductive paste, electronic parts, and multilayer ceramic capacitors
  • Conductive paste, electronic parts, and multilayer ceramic capacitors
  • Conductive paste, electronic parts, and multilayer ceramic capacitors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] Based on 100 parts by mass of Ni powder as conductive powder, 5.3 parts by mass of ceramic powder, 0.1 parts by mass of acid-based dispersant A, 5 parts by mass of binder resin, and 49 parts by mass of organic solvent were mixed to form Prepare conductive paste. The viscosity (after 60 days) of the prepared conductive paste was evaluated as described above. Table 2 shows the evaluation results of the amount of change in slurry viscosity together with the content of the acid-based dispersant relative to 100 parts by mass of Ni powder.

Embodiment 2

[0125] Except having made content of the acidic dispersant A into 0.5 mass part, it carried out similarly to Example 1, and prepared the electroconductive paste. Table 2 shows the evaluation results of the amount of change in slurry viscosity together with the content of the acid-based dispersant relative to 100 parts by mass of Ni powder.

Embodiment 3

[0127] Except having made content of the acidic dispersant A into 1.0 mass part, it carried out similarly to Example 1, and prepared the electroconductive paste. Table 2 shows the characteristics of the dispersant used and the evaluation results of the amount of change in slurry viscosity, together with the content of the acid-based dispersant relative to 100 parts by mass of Ni powder.

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Abstract

The present invention provides a conductive paste and the like that are very excellent in adhesive strength. Provide conductive paste, etc., containing conductive powder, ceramic powder, dispersant, binder resin, and organic solvent. The dispersant contains an acid-based dispersant with a molecular weight of 500 or less. The acid-based dispersant has one or more branched branched chain hydrocarbons.

Description

technical field [0001] The present invention relates to a conductive paste, an electronic component, and a multilayer ceramic capacitor. Background technique [0002] Along with miniaturization and higher performance of electronic devices such as mobile phones and digital devices, electronic components including multilayer ceramic capacitors are expected to be smaller and have higher capacity. A multilayer ceramic capacitor has a structure in which a plurality of dielectric layers and a plurality of internal electrode layers are stacked alternately, and by reducing the thickness of these dielectric layers and internal electrode layers, miniaturization and high capacity can be achieved. [0003] For example, a laminated ceramic capacitor is manufactured as follows. First, multiple layers are stacked on a layer containing barium titanate (BaTiO 3 ) and other dielectric powder and a binder resin on the surface of a dielectric green sheet, printing a layer formed by printing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01G4/232H01G4/30
CPCH01G4/30H01B1/22H01G4/232H01G4/002
Inventor 中家香织
Owner SUMITOMO METAL MINING CO LTD