POLYMER COMPOSITIONS COMPRISING DIFFERENT SHAPE OF DUAL FILLERS AND METHODS FOR PREPARING THE SAME

PURPOSE: A polymer composition is provided to use two kinds of thermoconductive fillers with a plate shape and a fiber shape, to improve a contact ratio among the thermoconductive fillers, and to improve mechanical strength by having have directionality on thermoconductive fillers in a polymer composition. CONSTITUTION: A polymer composition comprises 20-80 weight% of heat resistant polymer resin and 20-80 weight% of thermoconductive filler. The thermoconductive filler comprises a plate shape thermoconductive filler and a fiber shape thermoconductive filler. The heat resistant polymer resin is one or more selected from polyphenylene sulfide, polycarbonate, and polyamide. A manufacturing method of the polymer composition comprises: a step of melting and mixing the thermoconductive polymer resin and the plate shape thermoconductive filler; and a step of melting and mixing the fiber type thermoconductive filler in the mixture. [Reference numerals] (AA,DD,HH) Perpendicular direction; (BB,FF,GG) Flowing direction; (CC,EE,II) Transversal direction