| Name | polytetrafluoroethylene fluoroethylene polymer electret |
| Synonyms | polytetrafluoroethylene fluoroethylene polymer electret |
| Use | It is used in the manufacture of thin films, electret as a diaphragm electret microphone, electret filter, Radioactive measuring instrument and so on. |
corona discharge treatment is carried out on the surface of the film of polyvinylidene fluoride (PVDF) and PTFE or FEP, so that charges will be trapped on the surface of the polymer to form an electret. In addition, when the PTFE or FEP film is irradiated with electron rays, the charge is captured not only on the surface of the film, but also on the inside of the film. Therefore, a more stable.