| 摘要 |
<p>PURPOSE:To improve adhesive bond strength among prepregs in layering epoxy prepreg at high temperature by making a film, copolymerized after a mixing ratio of tetrafluoroethylene and ethylene and a third component to be added to them are specified, to be a release film for a thermosetting resin laminated sheet. CONSTITUTION:To a tetrafluoethylene of 30-60mol%/an ethylene of 70-40mol%, a third component to be represented by a general formula CX<1>X<2>X=CX<3>X<4>(in the formula, X<1>, X<2>, X<3>, X<4> represent groups to be selected from among H, F, FH3, CF3, CF2H, where H or F does not synchronize) is added. A film containing as a main component a fluoroplastic in which the third component of 0.1-10mol% for the total quantity of the tetrafluoreoethylene and the ethylene is copolymerized is used as a release film for a thermosetting resin laminated sheet. Thus, adhesive bond strength among prepregs in the case that the epoxy prepregs are laminated by pressure at 190 deg.C or above can be improved.</p> |
