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采用有机／无机原位复合技术，将酞菁钴（CoPc）的DMF溶液与Fe（CO）5混合、加热回流制备出稳定的、规则球形的、平均粒径为1．4μm／的酞菁钴／铁纳米填充母粒．其内部为10～15nm的α－Fe填充，外部为厚50～150nm的酞菁钴层包覆．纳米填充母粒的填实密度为3.664g／cm3，比饱和磁化强度为76．3Am2／kg,矫顽力为4．15kA／m．纳米填充母粒的热稳定性高于150℃，与甲基硅油组成的磁流变液有良好的抗沉降性．
An organic / inorganic in-situ composite technique was used to mix cobalt phthalocyanine (CoPc) in DMF with Fe (CO) 5 to prepare a stable, regularly spherical cobalt phthalocyanine with an average particle size of 1.4 μm / / Iron nano-filled masterbatch. The interior is filled with α-Fe of 10-15 nm, and the exterior is coated with a cobalt phthalocyanine layer with a thickness of 50-150 nm. The filling density of nano-filled masterbatch is 3.664g / cm3, the specific saturation magnetization is 76.3Am2 / kg and the coercivity is 4.15kA / m. The thermal stability of nano-filled masterbatch is higher than 150 ℃, and the MR fluid composed of methyl silicone oil has good anti-settling property.