PROCESS FOR PRODUCING DIAPHRAGM FOR ELECTRO-ACOUSTIC TRANSDUCER AND DIAPHRAGM FOR ELECTRO-ACOUSTIC TRANSDUCER

摘要

A diaphragm for electro-acoustic transducer is produced through molding of a composite material composed of a matrix resin reinforced with carbon nanotubes having the surface thereof treated for realizing of a chemical bond with the matrix resin. For one surface treatment, a coating of organic matter having an aluminum base coupling agent compound chemically bonded thereto is formed on the surface of the carbon nanotubes. The composite material composed of the matrix resin reinforced with the surface-treated carbon nanotubes is molded into the diaphragm for electro-acoustic transducer. For another surface treatment, the surface of the carbon nanotubes is furnished with functional groups. The composite material composed of the matrix resin reinforced with the surface-treated carbon nanotubes so as to provide a chemical bond between the carbon nanotubes and the matrix resin is molded into the diaphragm for electro-acoustic transducer.