SILVER POWDER AND METHOD FOR MANUFACTURING SAME

• Main Authors: YOON, Chi Ho, LEE, Young Ho, LIM, Jong Chan, LIM, Moo Hyun, KWAK, Jin Ho
• Format: Patent
• Language: English; French; Korean
• Published: 09.04.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CASTING; CONDUCTORS; ELECTRICITY; INSULATORS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TRANSPORTING; WORKING METALLIC POWDER

The present invention relates to a silver powder and a method for manufacturing same, wherein the silver powder can have excellent dispersibility and a uniform particle distribution. The method comprises: preparing a first aqueous solution containing a silver precursor and a complexing agent, and a second aqueous solution containing a hydrazine-based compound and a polysaccharide-based polymer dispersant having a carboxyl group or a salt thereof; and dropping the first aqueous solution into the second aqueous solution. La présente invention concerne une poudre d'argent et son procédé de fabrication, la poudre d'argent pouvant avoir une excellente dispersibilité et une distribution de particules uniforme. Le procédé comprend : la préparation d'une première solution aqueuse contenant un précurseur d'argent et un agent complexant, et une seconde solution aqueuse contenant un composé à base d'hydrazine et un dispersant polymère à base de polysaccharide ayant un groupe carboxyle ou un sel de celui-ci; et le versement de la première solution aqueuse dans la seconde solution aqueuse. 본 발명은 분산성이 탁월하며, 입자분포가 균일하고, 은 전구체 및 착화제를 포함하는 제1수용액 및 카르복실기 또는 그 염을 가지는 다당류계 고분자 분산제(polysaccharide)와 하이드라진계 화합물을 포함하는 제2수용액을 제조하고 상기 제1수용액을 제2수용액에 적하하는 것인 은 분말 및 이의 제조방법에 관한 것이다.