Manufacturing process of a capacitor with delayed ageing and a capacitor manufactured according to this process
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United States of America Patent
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-
Feb 21, 1995
Grant Date -
N/A
app pub date -
Dec 8, 1992
filing date -
Dec 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The manufacturing process of a capacitor with a polypropylene dielectric film by introducing pre-cross-linking elements of the polypropylene at the time of manufacturing. When the capacitor is used, the electrical field and/or temperature generated trigger the cross-linking process of the polypropylene, delaying and slowing down the ageing phenomena, i.e. the decrease of the dielectric strength. The pre-cross-linking agent is a polyfunctional monomer to which an activation accelerator and/or a stabilizing agent can be added.
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