Abstract
It has been shown that the direct piezoelectric effect occurs in low density, extruded polyethylene cable insulators and a piezoelectric d constant typical for such samples has been evaluated. Heat-treatment of the polyethylene, and oil absorption into it, both reduced the level of charge output. A probable mechanism for the piezoelectric effect in these polyethylene samples is given.
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Greaves, R.W., Fowler, E.P., Goodings, A. et al. The direct piezoelectric effect in extruded polyethylene. J Mater Sci 9, 1602–1608 (1974). https://doi.org/10.1007/BF00540758
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DOI: https://doi.org/10.1007/BF00540758