| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a thermally conductive material satisfying both of the high heat conductivity and the softness at a low cost by reducing the amount of a thermally conductive filler added. SOLUTION: This method for producing the thermally conductive material comprises mixing and dispersing a thermally conductive filler having high polarity into a nonpolar and crosslinkable polymer material to prepare a composition, carrying out heat treatment of the composition once under conditions not causing crosslinkage and then crosslinking the heat-treated composition. By formulating the thermally conductive filler having high polarity into the non-polar polymer material lowering viscosity at high temperature, the viscosity of the polymer material is lowered and fluidity of the polymer material is raised when heat-treated, and thermally conductive fillers are made to aggregate to each other and link is readily formed by affinity among thermally conductive fillers. As a result, the thermally conductive material having high thermal conductivity can be obtained. In addition, the production method, does not require formulation of the thermally conductive filler in high content and impart flexibility as well as high thermal conductivity to the thermally conductive material, because thermal conductivity obtained when the conductive material is formulated in a small amount is equivalent to or higher than the thermal conductivity obtained when formulated in a large amount. COPYRIGHT: (C)2006,JPO&NCIPI
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