Conductive effect of an electronic/ionic complex conductivity modifier for silicone elastomers

摘要

This study examined silicone, which demonstrated an ionic/electronic compounding conductivity effect through the complexation of polypyrrole (Ppy), carbon black (CB), and a poly(propylene oxide)-poly(ethylene oxide) copolymer with 20 wt LiClO4 (PEL). Rigid-body pendulum rheometry was used to observe the processing conditions for the polymer blends, and energy-dispersive X-ray spectrometry was used to analyze the distribution depth of the polymer blend surfaces for Ppy. In addition, a digital electrometer was used to test the surface resistance of the composites, and an impedance meter was used to test the dielectric constant and loss factor. The results showed that PEL-obstructed silicone molecular chain crosslinking, transformed from liquid to solid films, required a higher temperature for curing than silicone because the linear molecular structure of the polymer electrolyte was wound around the silicone polymer network structure, forming a semi-inferpenetrating network. This showed that the Ppy molecule could permeate SPIO blends more deeply. After the silicone was treated with the PEL modifier, the conductivity of Ppy was obstructed. On the other hand, the conductivity ity of CB showed no significant difference in the SPIO blends. Therefore, after the silicone matrix treatment of the electronic/ionic complex conduction process, there was no incremental effect on the conductivity. (c) 2005 Wiley Periodicals, Inc.