METHOD FOR MANUFACTURING SILVER POWDER AND CONDUCITVE PASTE INCLUDING SILVER POWDER

• Main Authors: CHOI JAE WON, KIM YOUNG HWAN, LEE CHANG GUN, JIN WOO MIN, LEE MI YOUNG, KANG TAE HOON
• Format: Patent
• Language: English; Korean
• Published: 09.05.2019
• 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

According to the present invention, a manufacturing method of silver powder includes a silver salt reducing step (S2) including: a reaction solution manufacturing step (S21) manufacturing a first reaction solution containing silver ions, ammonia (NH_3), organic acid alkali metal salts, and ammonium nitrate and a second reaction solution containing a reducing agent; and a precipitation step (S22) reacting the first reaction solution and the second reaction solution to obtain the silver powder. 본 발명에 따른 은 분말의 제조방법은 은 이온, 암모니아(NH), 유기산 알칼리 금속염 및 암모늄 나이트레이트를 포함하는 제1 반응액 및 환원제를 포함하는 제2 반응액을 제조하는 반응액제조단계(S21); 및 제1 반응액 및 제2 반응액을 반응시켜 은 분말을 얻는 석출단계(S22)를 포함하는 은 염 환원단계(S2);를 포함한다.