| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat radiation sheet excellent in heat conductivity and moisture resistance, and a hexagonal boron nitride powder used in the heat radiation sheet. <P>SOLUTION: The hexagonal boron nitride powder has been subjected to a surface modification treatment with a silane coupling agent having an organic functional group containing a vinyl group, and has an aggregate shape formed by aggregating scale-like primary particles of hexagonal boron nitride having a methanol-soluble B<SB POS="POST">2</SB>O<SB POS="POST">3</SB>content of 0.01-0.10% without orientation. The high heat conductivity and high moisture resistance heat radiation sheet is prepared by formulating the hexagonal boron nitride powder into a resin and/or rubber. <P>COPYRIGHT: (C)2012,JPO&INPIT |
