COMBUSTIBILITY OF BORON-CONTAINING FIRE RETARDANT TREATED BAMBOO FILAMENTS

摘要

As an indoor decorative material, bamboo filaments should be treated with flame retardants for safe use. The effects of different treatment conditions on boron loading of flame retardants (boric acid/borax = 1:1) in bamboo filaments were investigated by single factor experimental design. Furthermore, effects of boron-containing flame retardants on combustibility of bamboo filaments were evaluated by cone analysis. The results showed that boron loading in treated bamboo filaments increased distinctly as treatment duration, temperature, or solution concentration increased. Compared with untreated and ultraviolet (UV)-treated bamboo filaments, heat release decreased obviously in treated bamboo filaments with greater boron loading, heat rates were only 50 and 30 of untreated bamboo filaments and UV bamboo filaments, and the total amount of heat release was decreased by 39.7 and 56.5, respectively. During the combustion process, boron-containing flame retardants had excellent smoke suppression efficacy and total smoke release was decreased by 86.1 and 91.1, respectively. As a result, boron-containing flame retardants promote carbon residue production of treated bamboo filaments and decrease the mass loss during fire.