▎ 摘　　要

NOVELTY - Conductive nanocomposite comprises a mixed polymer matrix comprising an isobutylene isoprene rubber and a polyethylene oxide, graphene nanoparticles in the form of nanosheets in an amount of 0.1-5 wt.% based on the total weight of the conductive nanocomposite and carbonyl iron metal nanoparticles having a mean particle diameter of 8 nm in the amount of 1-4 wt % based on the total weight of the conductive nanocomposite, where the conductive nanocomposite has a nonlinear relationship between resistivity and temperature in the region of 25-180degreesC characterized by an exponential increase reaching a peak resistivity followed by an exponential decrease and where the conductive nanocomposite has a peak resistivity of 2500-18000 ohmcm at a temperature of 100-180degreesC. USE - The conductive nanocomposite is useful in a heater and a thermistor. ADVANTAGE - The conductive nanocomposite has a nonlinear relationship between resistivity and temperature characterized by an exponential increase reaching a peak resistivity followed by an exponential decrease as temperature increases and forms a component of the heater that is self-regulating as a result of the nonlinear relationship between resistivity and temperature of the conductive nanocomposite and forms a component of the thermistor. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a heater comprising the conductive nanocomposite sandwiched between metal electrodes; and (2) a thermistor comprising the conductive nanocomposite.