Film capacitor having a resin film including a cured product of a first organic material and a second organic material, and a resin film
AssigneeMurata Manufacturing Co., Ltd.
InventorShunsuke Akiba
Life of this patent
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Abstract
A film capacitor that includes: a dielectric film; and a metal layer on at least one surface of the dielectric film. The dielectric film is a resin film made of a cured product of a first organic material having multiple hydroxy groups in a molecule and a second organic material having multiple isocyanate groups in a molecule. An intensity ratio of a first peak at 1680 cm−1 to 1770 cm−1 derived from carbonyl groups in urethane bonds to a second peak at 1560 cm−1 to 1620 cm−1 derived from aromatic rings in a Fourier-transform infrared spectroscopy (FT-IR) spectrum of the resin film is 0.50 to 0.94.
Claims16
A film capacitor comprising:
- a dielectric film;
- and
- a metal layer on at least one surface of the dielectric film,
- wherein the dielectric film is a resin film made of a cured product of a first organic material having multiple hydroxy groups in a first molecule and a second organic material having multiple isocyanate groups in a second molecule, and
- an intensity ratio of a first peak at 1680 cm−1 to 1770 cm−1 derived from carbonyl groups in urethane bonds to a second peak at 1560 cm−1 to 1620 cm−1 derived from aromatic rings in a Fourier-transform infrared spectroscopy (FT-IR) spectrum of the resin film is 0.50 to 0.94.
A resin film comprising:
- a cured product of a first organic material having multiple hydroxy groups in a first molecule and a second organic material having multiple isocyanate groups in a second molecule,
- wherein an intensity ratio of a first peak at 1680 cm−1 to 1770 cm−1 derived from carbonyl groups in urethane bonds to a second peak at 1560 cm−1 to 1620 cm−1 derived from aromatic rings in a Fourier-transform infrared spectroscopy (FT-IR) spectrum of the resin film is 0.50 to 0.94.
Dependencies are inferred from the claim text.