| 摘要 |
Polymeric films exhibiting piezoelectric properties have such properties enhanced by being subjected to improved poling apparatus of the present invention comprising a textured corona discharge electrode roller oscillating over the polymeric film, preferably polyvinylidene fluoride, while the film is simultaneously slowly transported on a rotating drum. The electrode continuously discharges corona through the film while sweeping back and forth thereover. Comparatively low voltages are employed and dielectric breakdown of the film is substantially non-existent. A protective reuseable co-film is preferably interposed between the oscillating electrode and film to be poled. |
