| abstract |
An object of the present invention is to provide a fiber sheet having high flame retardancy, a synthetic resin foam sheet, a molded product thereof, and a flame-retardant sound absorbing material for automobiles using the molded product. A flame-retardant porous material sheet such as a flame-retardant fiber sheet obtained by adhering a flame-retardant capsule to a fiber or a synthetic resin foam, a flame-retardant synthetic resin foam sheet, or the like. When the flame retardant capsule is exposed to a high temperature, the synthetic resin coating film is broken and the flame retardant is exposed to impart self-extinguishing properties to the fiber sheet and the synthetic resin foam sheet. Since the molded product of the flame-retardant porous material sheet exhibits high flame retardancy and does not impair the air permeability of the fiber sheet or the synthetic resin foam sheet, it is useful, for example, as a flame-retardant sound absorbing material for automobiles and buildings. Is. |