Use of intumescent compounds in fire curtains

Abstract

Abstract. Automatic fire curtains are designed to divide sections of premises and structures into fire compartments for the purpose of localizing a fire, as well as filling openings in fire barriers. If a fire occurs due to a signal from a fire alarm sensor or a signal from a fire station, the blind automatically falls and locates the source of ignition. The paper presents the results of testing nine samples of fire curtains with an applied intumescent composition. Tests were conducted for 60 minutes before loss of sample integrity. The average temperature from the heated side of the sample reached 800 ~ 1000 ° C. Depending on the sample, the temperature from the unheated side ranged from 70 ° C to 294 ° C. The best result was shown by a sample from a layer of needle-punched heat-insulating material with a thermal conductivity of 0.036 W/(m×K) placed between layers of foil and treated with water-based intumescent composition of silica material.

New fire retardant compositions for fire-resistant automatic curtains

“…A several compositions for fire-resistant curtains have been developed (table 1). Hypothesis is that the charred layer which forms as a result of exposing an intumescent composition to high temperatures should increase the fire resistance limit of the curtain due to the charred layer's high thermal durability [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. An intumescent compound swells and increases in volume as a result of heating; swelling coefficient is used to measure the efficiency of a compound.…”

The enhancement of operating properties of intumescent fire-protective compositions

“…Fireproofing charring compositions are frequently used and well-known: first patents were published in 1930s [1,2]. A significant amount of researches [3][4][5][6][7][8][9] which purpose is to improve fire resistance of building constructions and materials shows that the work on enhancing the properties of swelling compositions continues nowadays. As intumescent materials exist for such a long period of time, researchers have found the optimal technological complex for producing intumescent compositions which ensure effective fire protection of constructions and materials.…”