Aircraft interior sandwich panel development

Three resin systems (bismaleimide, polyimide and modified phenolic) and several decorative films for use in aircraft interior panelling were subjected to flammability, smoke and gas emission, and toxicity testing. Cost, weight and appearance were also taken into account in assessing the feasibility of the materials for applications in passenger seating areas as well as in unoccupied compartments (galleys, lavatories, closets). Heat release studies and burn-through tests provided an additional measure of the fire safety characteristics of the panelling. A modified phenolic resin system and Tedlar-polycarbonate decorative film were selected as the most promising candidates for replacing conventional epoxy resin-impregnated fiberglass materials.