| 摘要 |
PURPOSE:To obtain a reflector surface material which excels in the size accuracy, reflection factor and smoothness with stable temperature characteristcs, by controlling the thermosetting process of a polymer composite material obtained by mixing an inorgaic filler into synthetic resin and therefore eliminating the use of a release agent. CONSTITUTION:A glass rod 1 having a rotary paraboloid 2 which is polished with high accuracy and washed is used as a mold material. A thin film 3 of a metal (Al, Ag, Au, Cu, etc.) having a high reflection factor is formed on the paraboloid 2. Then the film 3 is transcribed to a polymer composite material 4. The material 4 is obtained by mixing an inorganic filler such as alumina, graphite, glass beads, etc. into synthetic resin such as epoxy resin, unsaturated polyester resin, etc. If the material 4 contains an inorganic filler of glass beads, the heat expansion coefficient is reduced to decrease the heat deformation due to the heating and cooling processes. Thus, easy exfoliations as well as the highly accurate transcription of a curved surface is facilitated. |
