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    • 3. 发明公开
    • 유기물질을 이용한 담색을 띄는 자성 입자 및 그의 제조 방법
    • 使用有机材料的浅色磁性颗粒及其制备方法
    • KR1020110041302A
    • 2011-04-21
    • KR1020090098398
    • 2009-10-15
    • 한국과학기술원한국조폐공사
    • 강정구권준호김세윤김종균최원균김수동김동후
    • B22F9/00B22F1/02B82B3/00H01F1/00
    • B22F1/02B22F1/0081B22F2304/05H01F1/0054
    • PURPOSE: Light-color magnetic particles and a preparation method thereof are provided to effectively achieve light color of magnetic particles using a small amount of coating material by employing white melamine-formaldehyde resin as the coating material. CONSTITUTION: A method for preparing light-color magnetic particles is as follows. Melamine-formaldehyde resin, surfactant, and magnetic particles are mixed and stirred to coat the magnetic particles. The coated magnetic particles as are separated using a magnet. The melamine-formaldehyde resin is prepared by mixing melamine and formaldehyde aqueous solution and heating the mixture. The surfactant is one selected from the group consisting of pluronic F68, pluronic F127, pluronic P105, and pluronic L44. The magnetic particles are a mixture of one or more selected from the group consisting of iron, iron oxides, nickel, nickel oxide, cobalt, Ni-Co, Fe-Co, and chrome oxide.
    • 目的:提供浅色磁性颗粒及其制备方法,通过采用白色三聚氰胺 - 甲醛树脂作为涂层材料,通过少量的涂料有效地实现磁性颗粒的浅色。 构成:制备浅色磁性颗粒的方法如下。 将三聚氰胺 - 甲醛树脂,表面活性剂和磁性颗粒混合并搅拌以涂覆磁性颗粒。 使用磁体分离的涂覆的磁性颗粒。 三聚氰胺 - 甲醛树脂通过混合三聚氰胺和甲醛水溶液并加热混合物来制备。 表面活性剂是选自由pluronic F68,pluronic F127,pluronic P105和pluronic L44组成的组。 磁性颗粒是选自铁,氧化铁,镍,氧化镍,钴,Ni-Co,Fe-Co和氧化铬中的一种或多种的混合物。