| 摘要 |
PURPOSE:To enable a low-pressure molding under a normal pressure and prepare the title board free from void by deaerating a prepreg under specified conditions in preparing the board comprising a specific surface layer and a specific intermediate layer. CONSTITUTION:In preparing a laminate board comprising a surface layer consisting of a woven glass fabric impregnated with a thermoset resin (e.g. an epoxy resin) and an intermediate layer consisting of a nonwoven glass fabric impregnated with a thermoset resin contg. 10-200wt.% inorg. filler (e.g. silica and Al2O3.3H2O), a prepreg used for preparing the board is deaerated in vacuo before thermal press molding. |
