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Wood Precharring: A Novel Fire-retardancy Technique.
Lee-CK; Chaiken-RF; Singer-JM
NTIS: PB 290 123 :22 pages
This Bureau of Mines report describes a simple fire-retardant treatment for wood. The treatment involves preheating the wood surface at high heat flux (approximately 0.6 Cal/cm2 sec) to form an in situ surface char layer (approximately 3 mm thick) on the wood. Laboratory-scale fire tests show that the precharring technique improves the fire-resistance of virgin wood by decreasing and delaying generation of volatile gases through thermal insulation effect of the surface prechar layer.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 290 123
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division