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    • 3. 发明授权
    • 초고온 자기유도발열능 및 높은 비손실력을 갖는 페라이트계 초상자성 나노입자, 이의 제조방법 및 이를 포함하는 고온 열소작법 제재
    • 具有超高磁感应发热能力和高特定功率的基于铁氧体的超级纳米颗粒,其制备方法和包含其的热解剂
    • KR101280808B1
    • 2013-07-02
    • KR1020120078220
    • 2012-07-18
    • 천선주
    • 천선주배성태전민홍
    • B82B3/00H01F1/10A61K9/14A61P25/00
    • H01F1/11A61K9/141A61K9/51A61K41/0057B82Y5/00B82Y40/00
    • PURPOSE: A manufacturing method of super-paramagnetic nanoparticles in a ferrite system is provided to synthesize super-paramagnetic nanoparticles with high self induction caloricity and specific loss power (SLP) in a low magnetic field and a frequency range by performing a previous process and a bumping process in a nucleus generating step. CONSTITUTION: A manufacturing method of super-paramagnetic nanoparticles in a ferrite system comprises (1) a nucleus generation step and (2) a particle growth step. The (1) nucleus generation step includes the following steps; (a) a raw solution at a room temperature is heated to 190-195 degreeC and is kept at the same temperature; and (b) the raw solution at 190-195 degree C is heated to be at 200-204 degreeC and the raw solution contains one or more substance selected from Fe (III) acetylacetonate, Mg, Mn, Ni, Zn and Co. The (2) particle growth step includes the following steps; the raw solution obtained from the nucleus generation step is heated until it meets a boiling point of a solvent and is kept at the same temperature. [Reference numerals] (AA) Nucleation step; (BB) Growth step; (CC) 7 minute (bumping process); (DD) 20 minute; (EE) 60 minute; (FF) 54 minute 30 second; (GG) Temperature; (HH) Time (minute)
    • 目的:提供一种铁氧体系中超顺磁纳米颗粒的制造方法,通过执行以前的工艺和低温磁场,在低磁场和频率范围内合成具有高自感量热和特定损耗功率(SLP)的超顺磁性纳米粒子 细胞核产生步骤中的碰撞过程。 构成:铁氧体系中的超顺磁性纳米颗粒的制造方法包括:(1)核产生步骤和(2)颗粒生长步骤。 (1)核产生步骤包括以下步骤: (a)将室温下的原溶液加热至190-195℃,并保持在相同的温度; 和(b)将190-195℃的原料溶液加热至200-204℃,原料溶液含有一种或多种选自乙酰丙酮铁(III),Mg,Mn,Ni,Zn和Co的物质。 (2)颗粒生长步骤包括以下步骤: 将从核生成工序得到的原料溶液加热至满足溶剂的沸点并保持在相同的温度。 (AA)成核步骤; (BB)生长步骤; (CC)7分钟(碰撞过程); (DD)20分钟; (EE)60分钟; (FF)54分30秒; (GG)温度; (HH)时间(分钟)