| 摘要 |
<p>PURPOSE:To make it possible to manufacture epoxy resin forming material, which highly contains inorganic filler and, at the same time, has low viscosity and is excellent in formability by a method wherein setting assistant is added subsequently. CONSTITUTION:Resin composition, which consists of epoxy resin (a), phenol- novolak setting agent (b) and inorganic filler, is heated, melted and kneaded and, after that, cooled and ground into particulates. Hardening assistant is dispersed in the resultant particulates. From ten to twenty pts.wt. of the epoxy resin (a) is used. As the phenol-novolak setting agent (b), 5-10 pts.wt. of setting agent such as phenol-novolak resin, cresol-novolak resin, xylenol-novolak resin or the like is used. As the inorganic filler, 400-1000 pts.wt. of powder singly such as crystal silica, fused silica or the like or their combination is used with respect to 100 pts.wt. of the sum of the components (a) and (b). As the setting assistant, imidazoles, tertiary amine or the like is preferable and 0.05-5 pts.wt. of the setting assistant is used with respect to 100 pts.wt. of the sum of the components (a) and (b). Further, the particulate is preferably a finely divided particle having a particle diameter below 100 mesh.</p> |
