| 摘要 |
PURPOSE:A thermosetting resin composition improved in fluidity during molding, comprising a thermosetting resin and amorphous quartz spheres having thermally sprayed fine quartz particles on the surface. CONSTITUTION:A resin composition comprising 100pts.wt. thermosetting resin and 60-400pts.wt. amorphous quartz particles of which the surfaces contain fine quartz particles formed by thermally spraying a silicon-containing substance having a maximum particle diameter <=500mu and an SiO2 purity >=97wt% into an oxyhydrogen flame. Examples of the thermosetting resins include silicone, epoxy, phenolic, polyester, polyimide, polyurethane, and diallyl phthalate resins. When the mixing proportion of the filler is below 60pts.wt., the electrical insulation is poor, while when it exceeds 400pts.wt. the spiral flow length decreases, which are not desirable.
|
