MELT PROCESSIBLE FLUOROPOLYMER COMPOSITION WITH EXCELLENT HEAT CONDUCTIVITY, MOLDED PRODUCT MANUFACTURED FROM THE COMPOSITION AND MANUFACTURING METHOD

摘要

The present invention is a polymer composition, containing: 30 to 60 volume% of a melt processable fluoropolymer; and 40 to 70 volume% of boron nitride particles; wherein the boron nitride particles are made from particles (A) and particles (B), the particles (A) are spherical aggregate particles with an average particle diameter of 55 µm to 100 µm, and an aspect ratio of 1 to 2, the particles (B) are particles with an average particle diameter of 8 µm to 55 µm, and the volume ratio of the particles (A) to the total amount of boron nitride is 80 to 99 volume%. The polymer compositions have excellent moldability, insulation properties, heat conductivity, and heat resistance, and are suitable as raw materials for a sufficiently strong molded products, such as thin films.