Formation of Liquid Crystalline Order and Its Effect on Thermal Conductivity of AlN/Liquid Crystalline Epoxy Composite

Shingo Tanaka, Fusao Hojo, Yoshitaka Takezawa, Kiyoshi Kanie, Atsushi Muramatsu

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The liquid crystalline (LC) order was introduced on aluminum nitride particles by the surface effect to increase the thermal conductivities of aluminum nitride/LC epoxy composites. X-ray diffraction and grazing incidence small-angle X-ray scattering analyses revealed that the LC epoxy resin cured on the surface of an α-Al2O3 substrate formed homeotropically aligned smectic layers to increase the thermal conductivity. Therefore, thermally treated aluminum nitride particles, which formed α-Al2O3 layers on their surfaces, were applied to prepare the composites with high thermal conductivity. The thermal conductivities of the resulting composites were 11–36% higher than those with the composites prepared using untreated aluminum nitride particles.

Original languageEnglish
Pages (from-to)269-275
Number of pages7
JournalPolymer - Plastics Technology and Engineering
Volume57
Issue number4
DOIs
Publication statusPublished - 2018 Mar 4

Keywords

  • AlN
  • composite
  • liquid crystalline epoxy
  • thermal conductivity
  • thermosetting polymer

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Materials Chemistry

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