A polyimide resin composition and molded body
A technology of polyimide resin and polyetherimide resin, which is applied in the field of vibration plates for electroacoustic transducers, can solve the problems of difficult impact resistance, low flexibility, high rigidity, etc., and achieve excellent secondary processability and high durability excellent impact resistance
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Embodiment 1
[0186] (A)-1, which is a crystalline polyimide resin (A), was melt-kneaded at 340°C using a Φ40mm single-screw extruder, and then extruded through a T-die, followed by casting at about 200°C. The roll was heated and crystallized to form a crystallized film with a thickness of 25 μm. The measurements of (1) to (5) above were performed on the obtained film. The results are shown in Table 1.
Embodiment 2
[0196] The mixing mass ratio ((B) / (A)) of (B)-1 and (A)-1 was dry-mixed at a ratio of 80 / 20, and then used a Φ40mm co-rotating twin-screw extruder at 340°C After kneading, it extruded through a T-die, and then quenched with a casting roll at about 200° C. to produce a film with a thickness of 0.1 mm. The glass transition temperature, tensile modulus, tensile elongation at break, and flexural strength of the obtained film were evaluated. The results are shown in Table 1.
Embodiment 3
[0198] Production and evaluation of the film were performed in the same manner as in Example 1 except that the mixing mass ratio ((B) / (A)) of (B)-1 and (A)-1 was set to 60 / 40. . The results are shown in Table 1.
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Abstract
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