BIAXIALLY ORIENTED POLYARYLENE SULFIDE FILM, METALLIZED FILM, AND CAPACITOR

• Main Authors: OKURA MASATOSHI, IMANISHI YASUYUKI, MACHIDA TETSUYA
• Format: Patent
• Language: English
• Published: 18.06.2009
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

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