Fire-resistant glass is intended for installation in fire-prevention
windows, fire-prevention doors, stained-glass windows,
fire-prevention partitions when it is required to provide fire
resistance of designs according to requirements of fire safety. Fire
barriers are installed on escape routes, in corridors, in partitions
separating parts of a building with different types of use, in
vertical openings (elevators, stairways, atriums, curtain walls) .
In accordance with Russian Technical Regulations on Fire Safety Requirements (FZ-123) as well as other national Fire Codes, fire-resistant glass can provide fire resistance for a given time by integrity only (E), or by full insulation included integrity, thermal insulation and limiting flux of thermal radiation (EIW). In the first case, Brand Glass offers monolithic fire-resistant glass, and in the second, PARAFLAM laminated fire-resistant insulating glass.
PARAFLAM fire-resistant glass consists of two sheets of tempered glass, the space between which is filled with a layer of ablative heat-absorbing hydrogel. Hydrogel is a transparent nanocomposite made of organic polymer, which contains water and flame retardant agent. In case of fire, the tempered glass facing the fire is destroyed by overheating, opening access to the fire-resistant gel. After that, the flame retardant comes into effect - the glass is cooled by water evaporating from the hydrogel, the flame is quenched by non combusible gases released during the crystallization of the gel and further cooled by the latent heat of the phase transition. The fire resistance of the glass is proportional to the thickness of the gel layer.
According to the principle of operation, PARAFLAM glass is fundamentally different from intumescent fire-resistant glasses made on the basis of alkali metal silicate, and has no their inherent flaws.