| Abstract Scope |
BN particles have a hexagonal lattice of alternating B and N atoms that form a layered structure. In contrast to covalent bonding in the planar direction, the bonding force in the thickness direction is a weak van der Waals force. The flaky, platelet-like form of h-BN particles, which is a result of their layered structure, makes them less effective at filling resin than spherical fillers. It was succeeded in developing high-purity plate-like BN with particles selectively grown in the c-axis direction and realized a novel industrial process for producing hexagonal boron nitride powder. This development has greatly improved the resin-filling property, which has been a problem of conventional thin single-particle BN. Furthermore, the weakness of heat-dissipating film using BN single particles, in which the a-axis direction with low thermal conductivity is oriented perpendicularly to the thickness direction of the heat-dissipating sheet, has been greatly improved |