ANISOTROPIC GRAPHITE THIN FILM SUBSTRATE, AND APPLICATION DEVICE AND APPLICATION ELEMENT USING THE SAME

• Main Authors: TSUCHIYA SOJI, KUWATA JUN, HOSHI TOSHIHARU
• Format: Patent
• Language: English
• Published: 03.06.1997
• Edition: 6
• Subjects: APPARATUS FOR MAKING BEVERAGES; BASIC ELECTRIC ELEMENTS; BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COFFEE MILLS; COMPOUNDS THEREOF; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; DOMESTIC ARTICLES OR APPLIANCES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FURNITURE; HEAT EXCHANGE IN GENERAL; HEATING; HUMAN NECESSITIES; INORGANIC CHEMISTRY; KITCHEN EQUIPMENT; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEMICONDUCTOR DEVICES; SPICE MILLS; SUCTION CLEANERS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To obtain an anisotropic graphite thin film substrate strong in electric and thermal anisotropic properties, exhibiting mechanically good flexibility and improved in thermal conductivity by calcining a polymer film in an inert gas atmosphere to bend the C surfaces and form pores between the C surfaces. SOLUTION: The film of at least one kind of polymers selected from polyoxadiazole, polybenzothiazole, polybenzobisthiazole, polybenzoxazole, polybenzobisoxazole, polyimide, polyamide, polypenylenebenzoimidazole, polyphenylenebenzobisimidazole, polythiazole and polyparaphenylenevinylene is calcined in an inert gas atmosphere at 400-1200 deg.C, while forcibly releasing gases (excluding carbon gas) generated on the thermal degradation, thus producing the anisotropic graphite substrate having a film thickness of 0.1-1mm and a density of 0.8-1.5g/cc and imparted in flexibility due to pares 4 formed between C surfaces by the curvature 3 of the C surfaces.