| 摘要 |
PURPOSE:To easily obtain a samll-sized and highly reproducible separating board having the high efficiency of separation to separate each component from a mixture of various compounds, by using a photosensitive glass plate as a base plate and forming the flow passage of fluid on the surface of the base plate by photoetching. CONSTITUTION:A negative mask having a pattern for flow passage 2 shown in the figure is laid on a well-known photosensitive glasspalte (Ex. ''Photoform '' glass manufactured by CORNING GLASS Co. Ltd., in U.S.A.) including photosensitive elements such as gold and silver, and after irradiating ultraviolet rays, the mask is removed and the glass plate is heated at 500 deg.C for 1hr to crystallize the exposed part. After irradiating ultraviolet rays to the whole surface for about 5min, the crystallized part is etched by using 10% hydrofluoric acid to form an etched part on the glass plate 1. Subsequently the etched part is trated with n-dodecanol solution of silane or siloxane to melt and adhere a hard glass plate on the etched surface of the glass plate 1 and the whole is heated at 850 deg.C to obtain a separating board having ceramic construction. Thus a thin, small-sized and highly productive separating board having the high efficiency of separation is obtained. |
