Lawson, D.I., 1971. INTUMESCENT MATRICES AS FIRE RESISTANT PARTITIONS. Fire Research Notes 859
ABSTRACT
The application of intumescent paint to honeycombs provides a lightweight fire resisting partition which may be made of paper and board. The painted honeycomb itself has the property of being perforate, under normal conditions and will close once a fire occurs. It may therefore have application in ventilation ducts to stop the spread of fire and for suspended ceilings to prevent fire, attacking lighting fitments and services.
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