▎ 摘　　要

NOVELTY - Preparing Negative temperature coefficient (NTC) thermistor ceramic material involves (a) adding analytically pure iron, iron oxide, nickel oxide, manganese oxide and chromic oxide powder into the ball milling tank, then adding 5-6 wt.% modified graphene, then putting the atomizing deionized water into the ball milling tank; (b) after drying the pre-burning slurry by hot air, obtaining the mixture A, passing the mixture A through the screen and then entering the pre-burning furnace to be pre-sintered, obtaining the mixture B; (c) drying and sieving the mixture B after ball milling and drying, then sieving to obtain mixture C; (d) adding agglomerant into the mixture C and stirring and then pressing to obtain NTC thermistor ceramic material primary blank; (e) sintering the NTC thermistor ceramic material primary blank and parallel glue to obtain NTC thermistor ceramic material; and (f) depositing the pyrrole on the NTC thermo-sensitive ceramic resistance material. USE - Method for preparing Negative temperature coefficient (NTC) thermistor ceramic material. ADVANTAGE - The method enables to prepare NTC thermistor ceramic material that has improved anti-aging performance. DETAILED DESCRIPTION - Preparing Negative temperature coefficient (NTC) thermistor ceramic material involves (a) adding analytically pure iron, iron oxide, nickel oxide, manganese oxide and chromic oxide powder into the ball milling tank, then adding 5-6 wt.% modified graphene, then putting the atomizing deionized water into the ball milling tank, ball milling for 3.5-4.5 hours to obtain the slurry, the ball milling speed is 300-400 revolution/minutes; (b) after drying the pre-burning slurry by hot air, obtaining the mixture A, passing the mixture A through the screen and then entering the pre-burning furnace to be pre-sintered, obtaining the mixture B; (c) drying and sieving the mixture B after ball milling and drying, then sieving to obtain mixture C; (d) adding agglomerant into the mixture C and stirring and then pressing to obtain NTC thermistor ceramic material primary blank; (e) sintering the NTC thermistor ceramic material primary blank and parallel glue to obtain NTC thermistor ceramic material; and (f) depositing the pyrrole on the NTC thermo-sensitive ceramic resistance material and obtaining the NTC thermistor ceramic coated with pyrrole material, where the modified graphene has represented by the formula Fe1-xNi0.5Mn1.5CrxO4.