| 摘要 |
PURPOSE:To improve the anticorrosion and lubricating properties of titled medium, by making high-molecular surface active agents adsorbed on a ferromagnetic metallic thin film. CONSTITUTION:After an aqueous solution of an ionic high-molecular surface active agent such as a carboxylic acid type high-molecular surface active agent, a sulfate type high-molecular surface active agent, a sulfonic acid type high- molecular surface active agent, an amine type high-moleacular surface active agent and a quat. ammonium salt type high-molecular surface active agent is applied on a ferromagnetic metallic thin film, this substance is washed with a large quantity of pure water to wash away the high-molecular surface active agent which is not adsorbed. Polyvinyl potassium sulfate, sodium naphthalenesulfonate-formalin condensate, sodium alpha-olefin-sulfonate and sodium polyacrylate etc. are used actually used as surface active agents. |
