▎ 摘　　要

NOVELTY - Preparation of core-shell composite material involves (s1) preparing carbon material which is at least one of carbon fiber, carbon nanotube, and graphene oxide, and (s2) mixing the carbon material and modified inorganic salt dispersion liquid to obtain inorganic salt/carbon material as the product. USE - Preparation of core-shell composite material used for preparing polypropylene, PVC and polyethylene composite material used in fused deposition modeling three-dimensional printing applications (all claimed) and electronic and electrical applications. ADVANTAGE - The method realizes the ultra-short carbon fiber coated on the copper calcium titanate surface, to solve the carbon fiber tube easy to agglomerate, difficult to disperse, and at low filling quantity polymer breakdown and so a series, it solves the problem that the current ceramic/polymer high dielectric composite material improves the dielectric constant with high dielectric loss.