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포화지방산에 의한 Kerosene - based 자성유체의 제조 및 분산특성
김만(Mahn Kim),오재현(Jaehyun Oh),조명호(Myungho Cho),민동준(Dongjoon Kim) 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.6
The kerosene-based magnetic fluids were prepared with synthesized ultra fine magnetite by allowing saturated fatty acids to adsorb on the surface of magnetite particles. The magnetite powders, which were prepared by drying the stable aqueous dispersion of magnetite colloid obtained by allowing nonanoic acid dissociated with NH₄OH solution to adsorb on the monomolecular adsorption of an saturated fatty acid(C₁₄-C_(18)), were well dispersed in kerosene. These fluids were able to be re-dispersed to kerosene-based magnetic fluids by adding kerosene to dried water-based magnetic colloid powders. The dispersion ratio of magnetic fluids were constantly over 80%.