木材の発熱速度におよぼす難燃剤の効果.pdfVIP

Abstracts 53 5 276-282 2007 *1 Effects of Fire Retardant Chemicals and Retention on Heat Release Rate of Wood Shinichi KIKUCHI Satoshi MAEDA Heat release of interior materials is an important fire property which influences propagation and enlargement of room fires. In this study, nine kinds of fire retardant chemicals were impregnated into 15 mm thick specimens of sugi (Cryptomeria japonica D. Don) and yachidamo (Fraxinus mandshurica Rupr. var. japonica Maxim.) at various concentrations, and heat release performance was tested by the cone calorimeter test at an irradiance of 50 kW/m2. The chemicals used for treatment have been widely used in fire-retardant treated wood materials. The maximum heat release rate and the total heat release were reduced with increasing amounts of chemicals. The effect of decreasing total heat release was in the following order; guanidine phosphate, ammonium dihydrogenphosphate, diammonium hydrogenphosphate diguanidine phosphate guanylurea phosphate boric acid, ammonium borate, sodium octaborate ammonium sulfate. Phosphorus compound decreased flaming remarkably, but glowing was difficult to control. Key words: heat release, phosphorus compound, boron compound, cone calorimeter, fire retardant 9 9 CH5 N3H3PO4 NH4H2PO4 (NH4)2HPO4 (CH5 H3BO3 (NH4)2O 5B2O3 Na2B8O13 4H2O (NH4)2SO4 N3)2H3PO4 50kW/m2 C2H6N4O H3PO4 21 3 31 Abstracts *1 J. Hokkaido For. Prod. Res. Inst. Vol.21, No.3, 2007 32