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应用科学学报 ›› 1989, Vol. 7 ›› Issue (3): 263-266.

• 论文 • 上一篇    下一篇

表面活性剂在γ-Fe2O3上的吸附与γ-Fe2O3在甲苯-丁酮中的分散性

王平, 于淑华, 郭洪猷, 黄毓礼   

  1. 北京化工学院
  • 收稿日期:1986-09-10 修回日期:1987-05-02 出版日期:1989-09-30 发布日期:1989-09-30

ADSORPTION OF SOME SURFACETANTS ON SURFACEOF-γ-Fe2O3 AND DISPERSIBILITY OF THE γ-Fe2O3 PARTICLES IN TOLUNE-BUTANONE

WANG PING, YU SHUHUA, GUO HONGYOU, HUANG YULI   

  1. Beijing Institute of Chemical Technology
  • Received:1986-09-10 Revised:1987-05-02 Online:1989-09-30 Published:1989-09-30

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摘要： γ-Fe2O3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-Fe2O3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-Fe2O3分散性的影响以及分散性与吸附类型的关系.

Abstract: The authors made a research on the dispersibilities of γ-Fe2O3 treated by three kinds of surfacetants. The characters of adsorption of the surfacetants are studied by thermogravimetry-differential thermal analysis. It is found that the temperature,enthalpy, and energy of activation of phase transition from γ-Fe2O3 to α-Fe2O3 distinctly change after desorption of different surfacetants from γ-Fe2O3. Thus this phenomenon can be used to judge between chemical and physical adsorption. We find that two kinds of surfacetants of chemical adsorption can improve the dispersibility of γ-Fe2O3 in toluene-butanone.