| 摘要 |
<p>An electret material consisting of a molded article which has, as an inner component, a polar polymer with a volume resistivity of greater than 1012 ohms.cm on lateral cross section and a non-polar polymer with a resistivity of greater than 1014 ohms.cm that is intimately arranged on at least the opposing surfaces of the periphery of said inner component, the two polymers having such lateral cross sections being continuously arranged in the lengthwise direction. The invention further provides a method of producing the electret material by placing the composite molded article material between a ground electrode and a discharge electrode, and generating a DC high-tension electric field thereacross to obtain an electret thereof.</p> |
