섬유

fire blocking systems for aircraft seat cushions

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 318
a system for fire blocking in aircraft cushions by minimizing release of flammable gaseous decomposition products is disclosed. the system employs a catalytic matrix which cracks the flammable gaseous decomposition products to less flammable species. the system uses a non-fire retarded polyurethane cushion surrounded by an aramid matrix which is in turn covered with an aluminum film, e.g., aluminized norfab 11 ht-26-al. this matrix can be used alone or in combination with one or more additional coverings which enhance the contact of the combustible vapors with the catalytic matrix. these catalytic matrix materials are relatively light weight and permit a reasonably priced final product. the role of aluminum film is two fold: first it serves as a delocalizing heat conductor; and second, it provides a vapor barrier to increase the residence time of gases in the fabric thereby enhancing pryolysis and char-layer formation
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