一、什么叫驻极体驻极体是一种永久保持电极化状态的电介质。电介质的这种特性就像铁磁物质在外磁场作用下能够获得永久磁性一样。驻极体这个概念首先是由英国物理学家奥利弗·亥维赛在1885年提出的,然而,世界上第一个驻极体是在1919年由日本江口元太朗教授制成的。他在研究油类、蜡类的导电过程时把相等分量的巴西棕榈蜡和树脂混合,缓慢加热到熔融状态后加上高压静电场(场强为每厘米15KV),并在这样的高压作用下让其缓慢冷却到室温固化,切断电压之后,发现同电极接触的两个面上有正负电荷存在,最初与正电极接触的面带负电荷,与负电极接触的面带正电荷,后来这些电荷 First, what is the electret electret is a permanently maintain the electrode state of the dielectric. This characteristic of a dielectric is like a ferromagnetic substance that can acquire permanent magnetism under an external magnetic field. The concept of electret was first proposed by British physicist Oliver Hayves in 1885. However, the first elephant in the world was made in 1919 by Prof. Eguchi Yuntate of Japan. He studied the conductivity of oils and waxes by mixing equal parts of carnauba wax and resin, heating slowly to a molten state and applying a high-voltage electrostatic field (field strength of 15 kV per centimeter), and under such high pressure Let it slowly cooled to room temperature curing, after cutting off the voltage, found on both sides of the contact with the electrode there is a positive and negative charges, the first contact with the positive electrode negative charge, the negative electrode contact with the positive charge side, and later these Charge