Experimental Study on the Combustion Characteristics and Human Hazard of Flame-retardant Plywood

Abstract

This study was carried out to improve the flame-retardant performance of plywood for wood and woody materials used in buildings. The flame retardant used in this study was prepared by mixing boron, phosphorus, and ammonium species, and the prepared chemical composites were treated at the time of plywood production using the conventional wood-preservative treatment standard. Test results confirmed that the flame-retardant-treated plywood test specimens exhibited a fire safety improvement of about 50% compared with the untreated plywood test specimens. In addition, it was confirmed by scanning electron microscopy that a form of char was generated on the surface of the flame-retardant-treated test specimen after combustion, and the results of the gas harmfulness evaluation showed that the average behavior downtime in a laboratory rat was more than 7 min. The aim of this study is to develop flame retardancy in wood and wood materials, for fire safety and to reduce human hazard in the future.