| 摘要 |
PURPOSE:To form a protecting film having excellent surface hardness and chemical resistance on the surface of a plastic, by carrying out the plasma polymerization of an aromatic compound to apply an undercoating to the surface, and then carrying out the plasma polymerization of a silicon compound to apply a top-coating thereto. CONSTITUTION:A protecting film is formed on the surface of a plastic (e.g. polymethyl methacrylate) by applying an undercoating to the surface by the plasma polymerization of an aromatic compound (e.g. benzene) using a plasma polymerization apparatus, and then applying a top-coating to the surface by the plasma polymerization of a silicon compound (e.g. tetramethoxysilane) in combination with one or more gases selected from oxygen, nitrogen, argon, ammonia, etc. The thickness of the undercoating and the top-coating layers are preferably 0.01-1mu and 1-10mu, respectively. |
