SILVER POWDER MIXTURE, METHOD FOR PRODUCING SAME, AND CONDUCTIVE PASTE

[Problem] To provide a silver powder mixture that is suitable for forming a conductive film on a surface of a member having a stretchability, a method for producing the same, and a conductive paste using the silver powder mixture.[Solution] A silver powder mixture containing filamentous silver powde...

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Hauptverfasser: OKANO Taku, SASAKI Genta, SAITO Yu, MOTEKI Yoshio
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:[Problem] To provide a silver powder mixture that is suitable for forming a conductive film on a surface of a member having a stretchability, a method for producing the same, and a conductive paste using the silver powder mixture.[Solution] A silver powder mixture containing filamentous silver powder including a spherical part and a filamentous part and flaky silver powder having an average particle diameter of 1 µm or more and 50 µm or less and an aspect ratio, which is defined by a ratio of an average long diameter and an average thickness, of 1.5 or more, which are mixed at a prescribed ratio, is obtained by retaining a solution obtained by adding one kind or two or more kinds of a salt of copper and aluminum and ethylenediaminetetraacetic acid to a silver nitrate aqueous solution, for 60 seconds or more, and then adding a reducing agent containing one kind or two or more kinds of L-ascorbic acid, erythorbic acid, and salts thereof.