AGGREGATE OF FIBROUS COPPER FINE PARTICLE, MANUFACTURING METHOD OF AGGREGATE OF FIBROUS COPPER FINE PARTICLE

摘要

PROBLEM TO BE SOLVED: To provide an aggregate of fibrous copper fine particles having an average crystallite diameter limited in a specific range.SOLUTION: An aggregate of fibrous copper fine particles has an average crystalline diameter of 450 to 1000 and an average fiber diameter of 500 to 1500 . The aggregate of the fibrous copper fine particles is manufactured by depositing an aggregate with continuously conducting following process (I) and (II) in this order. Process (I): a process of heating a solution containing copper ion, an alkaline compound, a nitrogen-containing compound which may form a stable chelate with the copper ion, and a reductive compound to 50 to 100°C. Process (II): a process of maintaining the temperature of the solution after the Process (I) for 30 minutes or more.