abstract |
(57) [Summary] [Problem] A material for an insulating substrate having excellent mechanical properties, dimensional stability, heat resistance, flame retardancy, and the like, and particularly capable of exhibiting an excellent flame retardant effect by a shape retaining effect upon combustion. , Printed circuit boards, laminates, copper foil with resin, copper-clad laminates, polyimide films, TAB films and prepregs. SOLUTION: The insulating material contains 100 parts by weight of a thermoplastic resin or a mixture of a thermoplastic resin and a thermosetting resin, and 0.1 to 100 parts by weight of a layered silicate. Substrate material. |