Olefin-based laminated film and film capacitor
A technology of laminated film and olefin resin, which can be used in fixed capacitor dielectrics, electronic equipment, components of fixed capacitors, etc., and can solve the problems of insufficient voltage resistance and lack of dimensional stability.
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Embodiment 1
[0162] Basell Co., Ltd. polypropylene resin ( High melt tension polypropylene (Profax PF-814) 1.0% by mass was supplied to a single-screw melt extruder A for layer A at a temperature of 260°C. 99.7 parts by mass of "TOPAS" (registered trademark) 6013F-04 (resin obtained by copolymerizing ethylene and norbornene, glass transition temperature: 138°C) manufactured by Polyplastics as a COC of cyclic olefin resin, and As an antioxidant, 0.3 parts by mass of IRGANOX 1010 manufactured by Chiba Specialty Chemicals was mixed separately, and supplied to a single-screw melt extruder B for the B layer at a temperature of 260°C. Melt extrusion with layer A and layer B extruders, remove foreign matter with a sintered filter with a cut-off of 80 μm, and then use a feed block to make a 3-layer laminate of A / B / A and adjust the extrusion amount to make the laminate Thickness ratio becomes 1 / 1 / 1 (total ratio of both surface layers A layers relative to the total thickness of the film is 66.7%), ...
Embodiment 2～5
[0164] The change of casting drum temperature and lamination ratio (Example 2), the casting drum temperature, the change of the total layer thickness of the laminated film (Examples 3 and 4), and the change of casting drum temperature (Example 5) are Except for the conditions shown in Table 1, an olefin-based laminated film was obtained in the same manner as in Example 1. Table 1 shows the characteristics and capacitor characteristics of the olefin-based laminated film of each example. The capacitor element of the film of Example 2 was excellent in processing suitability, and was inferior in withstand voltage and reliability, but it was at a level that did not cause any problems in practical use. The film of Example 3 was very excellent in process suitability, withstand voltage, and reliability of a capacitor element. The film of Example 4 was excellent in processability and reliability as a capacitor element, and its withstand voltage was slightly inferior, but it was at a l...
Embodiment 6
[0166] Polypropylene resin produced by Prime Polymer Co., Ltd. with a meso-pentad fraction of 0.98, a melting point of 167° C., and a melt flow rate (MFR) of 2.6 g / 10 minutes relative to the polypropylene resin used as the A layer 100 parts by mass, kneading and extruding with an extruder set at 240°C so that the average particle diameter of 0.1 μm silica particles manufactured by Tokuyama Co., Ltd.: Sunsil SSP-M01 is 0.25 parts by mass, and the strands ( Strand) was water-cooled and then chipped, and supplied to a single-screw melt extruder for layer A as a polypropylene resin raw material (A-1), and film-formed under the conditions shown in Table 1. , in the same manner as in Example 1, an olefin-based laminated film was obtained. The characteristics and capacitor characteristics of the olefin-based laminated film of this example are shown in Table 1. The capacitor element was excellent in processing suitability and withstand voltage, and its reliability was poor, but it was...
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Abstract
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