| 초록 |
My talks will be on our group’s recent works to develop liquid crystalline epoxy resins (LCERs) with high thermal conductivity. First, we synthesized a typical LCER bearing 4,4’-biphenyl mesogenic moieties and fabricated its polymer composite containing alumina of several type as a filler. In addition, the filler effect of alumina’s geometrical factors on the thermal conductivity of the resulting-composites was surveyed. Next, we developed a new type hardener which enabled catalytic polymerization of the LCER. As a result, the content of curing agent was greatly lowered, which obviously contributed to the improvement of crystallinity. It was possible to maximize the self-orientation of the LCER, which influenced the improvement of the thermal conductivity. In the same manner, LCER composites with h-BN were also fabricated. The composites showed remarkably high thermal conductivity as we intended. In presentation, the details will be discussed. |
