Polypropylene film

A technology of polypropylene film and polypropylene resin, applied in the direction of film/thick film capacitors, ion implantation plating, coating, etc., can solve the problem of increased electrical breakdown rate of materials, shortened life of film capacitors, and poor heat dissipation of film capacitors Uniformity and other problems, to achieve the effect of reduced life and reduced capacity
CN111635548AInactive Publication Date: 2020-09-08孔维恒
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
孔维恒
Publication Date
2020-09-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a polypropylene film which comprises a shell, a core and leading-out lines. The core comprises a substrate layers, metal film layers and a heat conduction layer. The two substrate layers are made of modified polypropylene resin films; the metal film layers are fixedly connected to both sides of thesubstrate layers through evaporation, and the area of the metal film layers is smaller than that of the substrate layers; the heat conduction layer is made of a heat conduction silicone grease material; the surfaces, away from the heat conduction layer, of the metal film layers are coated with an insulating paint layer; the metal film layers on two adjacent substrate layers are in a staggered state; the leading-out wires are respectively conducted with the metal film layers on the two substrate layers; the MAH graft modified polyethylene wax and the active manganese dioxide are added into thepolypropylene film, so that the softness of the prepared polypropylene film is effectively and remarkably enhanced, meanwhile, the active manganese dioxide is self-decomposed to release oxygen ions togenerate an aluminum oxide film, and the service life of a film capacitor is further prolonged.
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Description

technical field

[0001] The invention belongs to the technical field of polymer materials, in particular to a polypropylene film. Background technique

[0002] Polypropylene capacitors use metal foil as an electrode, and after overlapping it with polypropylene film from both ends, it is a capacitor with a cylindrical structure. Since the film capacitor has no polarity, its insulation resistance is high and its frequency characteristics are excellent (frequency response Wide), and the dielectric loss is very small. Based on the above advantages, film capacitors are widely used in analog circuits, especially in the part of signal cross-connection. It is necessary to use capacitors with good frequency characteristics and extremely low dielectric loss. To ensure that there will not be too much distortion when the signal is transmitted, the dielectric constant is high, the volume is small, the capacity is large, and the stability is relatively good. It is suitable for bypass capac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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