Physicochemical, electrical and stability properties of carbon black/polyesterimide thick-film resistors

This paper describes carbon/polyesterimide thick-film resistive composites. Polyesterimide (PEI) resin with high thermal durability served as an insulative matrix whereas medium structure carbon black (MSCB), blend of MSCB and graphite (G), and high structure carbon black (HSCB) have been used as an active phase. Chosen physicochemical investigations, standard electrical measurements (dependence of basic electrical properties on kind and content of conductive filler, curing method and curing temperature) as well as nonstandard electrical methods (1/f noise and voltage nonlinearity properties) and various stability tests have been used for complete description of MSCB/PEI, (MSCB+G)/PEI and HSCB/PEI thick-film resistor series.