UNITARY FILTER FOR PYROTECHNIC AIRBAG INFLATOR

摘要

UNITARY FILTER FOR PYROTECHNIC AIRBAG INFLATOR A unitary rigid filter for use in a high temperature, high pressure application in a pyrotechnic airbag inflator includes a matrix structure formed of porous carbonaceous foam material coated with silicon material and having a high thermal conductivity coefficient for absorbing heat from the gases generated on ignition of a pyrotechnic material. The porous, carbonaceous foam has a porosity rating or permeability of approximately 40 ppi to 80 ppi and a thin, sheet-like liner of porous, ceramic paper is mounted on the body of the foam matrix structure for improving operational characteristics.