POLYMER COMPOSITE PRODUCING INSULATING MATERIAL OF A HIGH VOLTAGE DIRECT CURRENT CABLE FOR POWER TRANSMISSION AND METHOD THEREOF

摘要

PURPOSE: A polymer composite for producing insulating material of high voltage direct current cable for transmission is provided to minimize insulation voltage degradation which occurs dielectric breakdown at voltage lower than initially designed dielectric breakdown voltage. CONSTITUTION: A polymer composite for producing insulating material of high voltage direct current cable comprises a graphite nanofiber partially carbonized by 80-0.01 %, or graphite nanoparticles partially carbonized to 80-0.01%. A manufacturing method the polymer composite comprises a step of manufacturing a graphite nanofiber partially carbonized by carbonizing the graphite nano fiber; a step of manufacturing a polymer composite comprising the partially carbonized graphite nanofiber. [Reference numerals] (AA) Embodiment; (BB) Comparative embodiment