Abstract
The paper studies kinetic properties of aerosols formed in thermal degradation of wood. The impact of modifying agents in wood surface layer on the quantitative composition of smoke aerosol solids was analyzed. For this purpose, grain-size of aerosol solids was analyzed, and the physical and chemical properties of source and modified wood were assessed.
Highlights
One of the most hazardous factors causing humans’ death in a fire is smoke formation
Based on the above mentioned, the objective of this paper is to evaluate the effect of wood surface layer modifiers on the smoke aerosol formation and stability
To evaluate the stability of aerosols, it is necessary to determine its kinetic parameters: coagulation rate and sedimentation rate, which are determined by the structure of solid particles in the disperse phase and the Brownian motion [16-21]
Summary
One of the most hazardous factors causing humans’ death in a fire is smoke formation. As a result of the combustion of flammable construction materials, smoke formation in evacuation routes occurs, causing possible visibility deterioration that can lead to disorientation in space and panic under the increased hazard conditions. Modern scientific works are aimed at studying the influence of the wood species and various methods of its modification on smoke formation, which is characterized by the indices of decreasing light transmission capacity. The issue of the effect on the structure and properties of the smoke aerosol is poorly investigated. The study of this issue is urgent to ensure humans’ safety in the event of a fire [1,2]
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