| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-quality biaxially oriented polyarylene sulfide film, which is excellent in heat resistance, dimensional stability and electric properties and has less variation of physical properties in a film plane, such as a polyarylene sulfide film capable of forming a highly reliable capacitor, in particular, a laminated chip capacitor improving its voltage resistance and self-healing property (SH property), reducing particle drop defects during capacitor processing and dimensional change due to heat during a surface mounting process, and increasing a yield in capacitor manufacturing, and to provide a metallized film of the polyarylene sulfide film and a capacitor using the same. SOLUTION: The biaxially oriented film is composed of a thermoplastic resin containing a polyarylene sulfide and another thermoplastic resin A other than the polyarylene sulfide, and the thermoplastic resin A forms a dispersion phase with an average dispersion diameter of 50-500 nm. The glass transition temperature of the film is observed at≥85°C and <95°C and not observed at≥95°C and≤130°C. When the film is heated at 150°C for 30 minutes, a longitudinal thermal contraction rate is 1.5% or less, while a width directional thermal contraction rate is≤0.2% and≥-1.0%. A molten crystallization temperature of the film is≥170°C and≤220°C. COPYRIGHT: (C)2009,JPO&INPIT |
