Abstract
The improvement in the thermal conductivity of the matrix resin is effective to improve the thermal conductivity of the composite. The developed mesogenic epoxy resin forms self-arranged domain when cured, which contributes to the high thermal conductivity. But, the higher order structure in the mesogen-containing epoxy composite has not been confirmed. So, we observed the structure directly using X-ray diffraction, and clarified the relationship between higher order structure and thermal conductivity of the mesogen-containing epoxy composite. We also confirmed diffraction peak of the smectic structure of resin by X-ray diffraction. Thus, the higher order structure formed in the filler-rich composite of mesogenic epoxy resin was clarified to contribute to the high thermal conductivity of the composite. In addition, it was clarified that the liquid crystalline ordering of the mesogenic epoxy resin was further enhanced by fillers.
