JPS58199516A - Self-recovery condenser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to self-recovering capacitors.

Conventional self-healing capacitors are formed by vapor-depositing metals such as Ae and Zn on one side or both sides of insulating paper or insulating film, and then all the volumes are the same size or laminated. Depending on the type, that is, the chemical structure of the dielectric material: there are those in which the self-healing action progresses extremely well, and those in which the self-healing action does not progress well, leading to destruction of local dimensions or the entire capacitor. Films and film contents such as vinylidene fluoride are examples of the latter, and these have not been put to practical use in this type-7 capacitor. Even in this type of capacitor made of twisted insulating paper and other films, if the self-recovery function is further improved, it is possible to further enhance the advantages such as the possibility of increasing the total potential gradient used.

As a result of various experiments and autopsies regarding the self-recovery function of this type of capacitor, the present inventor has found that a polyacetylene film is formed on insulating paper or an insulating film, and a metal vapor-deposited electrode is formed on this surface, or a metal vapor-deposited electrode is formed on the surface of the polyacetylene film. Capacitors constructed using single-sided or double-sided metallized dielectrics with an acetylene film formed on the opposite side show extremely good self-healing properties, and the amount of free carbon in that area is extremely low. I confirmed that it would be a small amount.

The above insulating film is a plastic film, such as polystyrene, polyethylene, polypropylene, polycarbonate-1, polyethylene terephthalate, polybutylene terephthalate, polyethylene natsuta l/-1-, acetylcellulose, ethylcellulose, polyvinyl fluoride, polyvinyl fluoride, These are insulating films made of vinyl 3-benidene fluoride, polyamide, polyamideimide, etc.

A polyacetylene film is obtained as a polymer film by uniformly coating a Ziegler-Natta catalyst on the surface of an insulating paper or an insulating film, and passing acetylene gas thereon.

The following is a main configuration example of the insulating film of the self-healing capacitor according to the present invention.

(Il Single-sided metallized dielectric with a polyacetylene film formed on one side of an insulating film and electrodes formed on the surface; Single-sided metallized dielectric with a polyacetylene film formed on one side of the insulating film and electrodes formed on the other side) , a single-sided metalized dielectric in which a polyacetylene film is formed on both sides of an insulating film, and an electric field is completely formed on the surface of one of the polyacetylene films.

+II) A capacitor constructed using a double-sided metallized dielectric material and a non-metalized dielectric material, in which electrodes are formed on both surfaces of a dielectric material having a polyacetylene film formed on one or both surfaces of an insulating film.

Each embodiment of the above invention is shown in a table.

As is clear from the table above, the present invention provides a self-healing capacitor with excellent characteristics, without decreasing the residual rate or increasing the amount of free carbon even after a forced test. It is possible to obtain this, and its industrial potential is great.

Claims (1)

[Claims] A self-healing capacitor characterized in that it is constructed using a dielectric material having a polyacetylene film formed on at least one surface of an insulating paper or an insulating film, and a metalized dielectric material on one or both surfaces of which an electrode is fully formed on at least one surface.