| 摘要 |
PURPOSE:To improve the leakproof characteristic, by disposing a layer of mixed resins of epoxy resin and fatty acidic polyamide resin between the negative- pole container with its copper-clad surface chemically polished and the gasket and making the gasket integral with the negative-pole container. CONSTITUTION:The negative-pole container 4 constructed by a 3-layer clad plate of nickel 1, stainless steel 2, and copper 3 is treated in a chemical polishing liquid composed, for example, of hydrogen peroxide and sulfuric acid, the mole ratio of the latter to the former being 0.045, to obtain a clean copper surface. Then, on the surface of a gasket 5 made of nylon 66 or the like, a layer of mixed resins 6 of epoxy resin and fatty acidic polyamide resin having more amount of active hydrogen than he equivalent to react with the epoxy resin is formed. The gasket 5 with the resin layer 6 formed thereon is fitted in the chemically polished negative-pole container 4 and they are pressed together under the temperature of 200 deg.C so that the gasket is made integral with the negative-pole container, and the negative-pole container is used for constructing a silver-oxide cell. |
