What is an intumescent material? Where is it used?
Solution
An intumescent material is one that undergoes a chemical change when exposed to heat or
flames, becoming viscous then forming expanding bubbles that harden into a dense, heat
insulating multi-cellular char.
The objectives of intumescent technology are the containment of fire and toxic gases by
inhibiting flame penetration, heat transfer and transport of toxic gases from the site of a fire to
other parts of a structure.
A typical, practical application of intumescence is in fire seal technology, where stips of
intumescent material in a carrier are fitted around the perimeter of a fire door. During a fire the
fire seals intumescence (expand and char) to resist fire penetration and prevent the spread of
fumes.
Intumescent technologies are widely used in passive fire protection systems, where potential
pathways for the spread of flames and fumes, such as conduits, wall openings and ventilation
grilles are fitted with fire retardant products. Passive fire protection materials are usually
combined with \"active\" fire supression technologies such as sprinklers, foam generation and
inert gas systems.
fireproofing items such as - fire seals, smoke seals, letter box systems, pipe collars, pipe sleeves,
pipe wraps, duct wrap, fire grilles, cladding seals, fire rated foams, downlighter covers, lighting
canopies, luminaire covers.
Intumescents are used to achieve passive fire protection for such applications as firestopping,
fireproofing, gasketing and window casings. Such applications are relevant for buildings,
offshore constructions, ships and aircraft..
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What is an intumescent material Where is it used SolutionAn .pdf
1. What is an intumescent material? Where is it used?
Solution
An intumescent material is one that undergoes a chemical change when exposed to heat or
flames, becoming viscous then forming expanding bubbles that harden into a dense, heat
insulating multi-cellular char.
The objectives of intumescent technology are the containment of fire and toxic gases by
inhibiting flame penetration, heat transfer and transport of toxic gases from the site of a fire to
other parts of a structure.
A typical, practical application of intumescence is in fire seal technology, where stips of
intumescent material in a carrier are fitted around the perimeter of a fire door. During a fire the
fire seals intumescence (expand and char) to resist fire penetration and prevent the spread of
fumes.
Intumescent technologies are widely used in passive fire protection systems, where potential
pathways for the spread of flames and fumes, such as conduits, wall openings and ventilation
grilles are fitted with fire retardant products. Passive fire protection materials are usually
combined with "active" fire supression technologies such as sprinklers, foam generation and
inert gas systems.
fireproofing items such as - fire seals, smoke seals, letter box systems, pipe collars, pipe sleeves,
pipe wraps, duct wrap, fire grilles, cladding seals, fire rated foams, downlighter covers, lighting
canopies, luminaire covers.
Intumescents are used to achieve passive fire protection for such applications as firestopping,
fireproofing, gasketing and window casings. Such applications are relevant for buildings,
offshore constructions, ships and aircraft.
