| 摘要 |
PROBLEM TO BE SOLVED: To provide an electret which enhances an electrostatic charge amount and further suppresses an attenuation of electrostatic charges to liquid particles since an electret which contains a known additive for the improvement in electrostatic charges causes more remarkable attenuation of electrostatic charges than an electret which contains no additive in the case of deposition of liquid particles such as those of oil mist.SOLUTION: An electret is configured by depositing polytetrafluoroethylene with melting points of 35°C or more and 320°C or less on a carrier containing 0.01-15.0 wt% of at least a kind of hindered amine and triazine additives to provide at least one of the carrier and the polytetrafluoroethylene with electrostatic charges. |
