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γ-Fe_2O_3是制造磁记录材料的主要原料之一.用不同表面活性剂处理的γ-Fe_2O_3在同一种分散介质中的分散性有明显的不同.本文选用磁记录材料生产中常用的甲苯-丁酮为分散介质,研究表面活性剂对γ-Fe_2O_3分散性的影响以及分散性与吸附类型的关系.要特别说明的是这里讲的表面活性剂仍是沿用水溶液体系的术语,在甲苯-丁酮中,这些助剂并没有表面活性.二、实验二.γ-Fe_2O_3悬浮体
γ-Fe_2O_3 is one of the main raw materials for making magnetic recording material.The dispersibility of γ-Fe_2O_3 treated with different surfactants in the same dispersion medium is obviously different.In this paper, the common toluene-butyl Ketone as a dispersion medium to study the influence of the surfactant on the dispersibility of γ-Fe 2 O 3 and the relationship between the dispersibility and the type of adsorption. It should be particularly noted that the surfactant here is still the term used in the aqueous solution system, , These additives do not have surface activity. 二, Experiment 二 .γ-Fe_2O_3 suspension