Resonator piece edge material for electroacoustic transducer, resonator piece for electroacoustic transducer, resonator piece for microspeaker, and film

• Main Author: HASUIKE MAHO
• Format: Patent
• Language: Chinese; English
• Published: 04.03.2022
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

Provided is a resonator element edge material for an electro-acoustic transducer, which contains a crystalline polyimide resin (A) that is composed of a tetracarboxylic acid component (a-1) and a diamine component (a-2) that is mainly composed of an aliphatic diamine. Furthermore, the present invention provides a polyimide resin composition which contains a polyetherimide resin (B) and a crystalline polyimide resin (A) that contains a tetracarboxylic acid component (a-1) and an aliphatic diamine component (a-2), with respect to the mass of the tetracarboxylic acid component (a-1) being less than the mass of the aliphatic diamine component (a-2), and with respect to the mass of the aliphatic diamine component (a-2) being less than the mass of the tetracarboxylic acid component (a-1). The content ratio of the polyetherimide resin (B) to the crystalline polyimide resin (A) is (B)/(A) = 1/99-99/1. 本发明提供一种电声变换器用振动片边缘材料，其含有结晶性聚酰亚胺树脂(A)，所述结晶性聚酰亚胺树脂(A)由四羧酸成分成分(a-1)和以脂肪族二胺为主成分的二胺成分(a-2)构成。另外，本发明提供一种聚酰亚胺类树脂组合物，其含有聚醚酰亚胺