摘要:
An object of the present invention is to provide a polyolefin-based film that is excellent in withstand voltage characteristics and reliability in high-temperature environments and is suitable for use in, for example, capacitors to be used at high temperatures and high voltages, and a main object is to provide a polyolefin-based film that includes a layer A including a cycloolefin-based resin and a polypropylene-based resin and has a total light transmittance of 85% or more and an internal haze of 4.0% or less.
摘要:
A film capacitor (A) includes a body (5) including a core body (4) formed of an insulating material and metalized films (3a, 3b) which are wound around the core body (4); and first and second terminal electrodes (6a, 6b) disposed on both end surfaces in an axial direction of the body (5), respectively, a cross section perpendicular to an axial direction (z direction) of the core body (4) having an oval outer periphery (7) having a major axis and a minor axis, and an inner periphery (8) defining a slit extending along the major axis. The provision of the core body (4) makes it possible to suppress loosening of the metalized films (3a, 3b) or occurrence of a gap between the metalized films (3a, 3b), thus making the film capacitor (A) having a high insulation property.
摘要:
The present disclosure provides a coiled capacitor comprising a coil formed by a flexible multilayered tape, and a first terminating electrode and a second terminating electrode which are located on butts of the coil. The flexible multilayered tape contains the following sequence of layers: first metal layer, a layer of a plastic, second metal layer, a layer of energy storage material. The first metal layer forms ohmic contact with the first terminating electrode and the second metal layer forms ohmic contact with the second terminating electrode. The energy storage material comprises material selected from the list comprising rylene fragments, doped oligoaniline and p-oligo-phenylene, supramolecular structures, colloidal composite with dispersion (suspension) of electro-conductive anisometric particles in an insulator matrix, material comprises a surfactant.
摘要:
Embodiments of a high-permittivity, low-leakage energy storage device, such as a capacitor, and methods of making the energy storage device are disclosed. The disclosed device includes electrically conductive first and second electrodes, and a sterically constrained dielectric film disposed between the first and second electrodes. The sterically constrained dielectric film comprises a plurality of polymeric molecules, and at least some of the polymeric molecules are bound to the first electrode. The disclosed device may include an insulative layer between the first electrode and the dielectric film and/or between the second electrode and the dielectric film.
摘要:
The present invention addresses the problem of providing a biaxially stretched polypropylene film for capacitors, which has high voltage resistance and excellent breakdown properties. The present invention also addresses the problem of providing a biaxially stretched polypropylene film for capacitors, which can be used suitably in a high-capacity capacitor to which a high voltage is to be applied under a higher temperature, and which preferably has a small thickness. The present invention relates to a biaxially stretched polypropylene film for capacitors, wherein a polypropylene resin which constitutes the polypropylene film has a number average molecular weight of 40,000 to 100,000 inclusive and a Z average molecular weight of 950,000 to 1,500,000 inclusive, wherein, in a molecular weight distribution curve, the value of the difference obtained by subtracting a differential distribution value at a logarithmic molecular weight Log (M) of 6.0 from a differential distribution value at a logarithmic molecular weight Log (M) of 4.5 is -15 to 11% inclusive.
摘要:
The present invention addresses the problem of providing a biaxially stretched polypropylene film for capacitors, which has high voltage resistance and excellent breakdown properties. The present invention also addresses the problem of providing a biaxially stretched polypropylene film for capacitors, which can be used suitably in a high-capacity capacitor to which a high voltage is to be applied under a higher temperature, and which preferably has a small thickness. The present invention relates to a biaxially stretched polypropylene film for capacitors, wherein a polypropylene resin which constitutes the polypropylene film has a number average molecular weight of 40,000 to 100,000 inclusive and a Z average molecular weight of 950,000 to 1,500,000 inclusive, wherein, in a molecular weight distribution curve, the value of the difference obtained by subtracting a differential distribution value at a logarithmic molecular weight Log (M) of 6.0 from a differential distribution value at a logarithmic molecular weight Log (M) of 4.5 is -15 to 11% inclusive.
摘要:
The invention relates to a device (30) for separating at least two strands of material (12a, 12b) from the cutting of a strip of material moving continuously, characterized in that the device includes a spreader (32, 33) for spreading the strands of material apart in a transverse direction (v) extending in the movement plane (P2) of the strands of material, perpendicularly to the movement direction of said strands of material.
摘要:
Provided is a dielectric resin composition for a film capacitor having a low dielectric loss. A resin composition constituting dielectric resin films (3, 4) of a film capacitor (1) includes a first atom group including at least one functional group selected from among a methylene group, an aromatic ring and an ether group and having a relatively small molar polarizability, and a second atom group including at least one functional group selected from among a hydroxyl group, an amino group and a carbonyl group and having a relatively large molar polarizability, and the resin composition satisfies the condition that a value calculated from the formula (sum of absorption band intensities of first atom group)/(sum of absorption band intensities of second atom group) is 1.0 or more. Herein, as absorption band intensities of the functional groups, peak intensities detected in specific wavenumber ranges are employed.