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Polyparaxylylene electrets usable at high temperatures
Author(s) -
Raschke C. R.,
Nowlin T. E.
Publication year - 1980
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1980.070250811
Subject(s) - electret , materials science , corona (planetary geology) , layer (electronics) , charge (physics) , composite material , polymer chemistry , physics , quantum mechanics , astrobiology , venus
Thin coatings of various polyparaxylylenes were transformed into electrets by corona charging them and then overcoating with more polyparaxylylene to protect the charge layer. For such electrets, the extrapolated ten‐year use temperature depended on the thermo‐oxidative stability of the polyparaxylylene layer and was greater than 100°C for the most stable electrets. The voltage levels and surface charge densities were always greater than or equal to those of charged Teflon electrets, similar to those used in commercial devices.