Determination of the efficiency of fire protection of wood by a composition based on ammonium polyphosphate

Abstract

Experimental studies were conducted to determine the effectiveness of fire protection of compositions using experimental samples of ammonium polyphosphate and it was established that fire-resistant wood belongs to non-flammable materials. It is shown that experimental wood samples after treatment with a composition using ammonium polyphosphate and ammonium polyphosphate heat-stabilized with melamine polyphosphate belong to the materials of the first efficiency group (flammable materials) in terms of fire protection efficiency. The studied composition provides fire protection efficiency, respectively, for objects of classes I...V. According to the results of experimental studies, it was established that the use of "Silol" hydrophobic mixtures delays the penetration and accumulation of water in fire-resistant wood. An increase in the fire-resistant efficiency of fire-resistant wood during the joint action of "DSA-2" and the hydrophobizing mixture "Silol" after processing the samples was also revealed. The atmospheric resistance of fire-resistant wood as a result of the joint action of the composition was investigated using experimental samples of ammonium polyphosphate and ammonium polyphosphate heatstabilized with melamine polyphosphate and the "Silol" mixture.