ポリマ電解質型帯電防止樹脂中の空間電荷分布の観測

抄録

A polymer dielectric material tends to be easily charged, and may cause an electrostatic discharge which becomes a serious problem because the consequent electromagnetic noise damages electronic circuits in various kinds of apparatus. In order to prevent an electrostatic discharge, the new materials have been developed. The anti-electrostatic polymer includes some kinds of polymer solid-electrolytes, so that space charge originally exists inside the materials. We investigate the mechanism of the anti-electrostatic discharge effect of the polymer by measuring the space charge distribution using the high resolution pulsed-electroacoustic method. The experimental results suggest that the internal space charge of the polymer accumulates at the surface, and forms the hetero charge distribution at the interface between the electrodes and the specimen. Thus, internal space charge compensates the applied electric field, resulting in preventing the increase of the surface potential. In addition, internal space charge behavior relates to the the dispersion condition of the polymer solid-electrolyte that depends on the quantity of the electrolytes and the procedure of the specimen.