Nothing Special   »   [go: up one dir, main page]

Flame Retardant Finish: Submitted By:-Ravi Bhushan Ritesh Raman

Download as pptx, pdf, or txt
Download as pptx, pdf, or txt
You are on page 1of 11

FLAME RETARDANT FINISH

SUBMITTED BY :-
Ravi bhushan
Ritesh raman
Textiles consist of highly ignitable materials and
are the primary source of ignition. They
contribute to rapid fire spread
However, reduction of ignitability can be
obtained by :-

1: Use of Inorganic materials {Asbestos, Glass


etc}
2: Through chemical treatment with FR {Flame
Retardant chemicals}
3: Through modification of the polymer.
Flammability of Fabrics
• Cotton and linen also have a high burning
rate
• Acetate and triacetate are as flammable or
slightly less flammable than cotton
• Nylon, polyester and acrylic tend to be slow
to ignite but once ignited, severe melting
and dripping occurs.
• Wool is comparatively flame-retardant
• Glass fibers and monoacrylic are almost
flame-resistant
Flame retardant
• The flammability of fabric can be drastically
reduced through the use of fire retardants
• Resistant to catching fire.
• Flame retardants are chemicals used in
textiles and leather goods that inhibit or
resist the spread of fire
• Fire retardant fabrics are textiles that are
naturally more resistant to fire than others
through chemical treatment or
manufactured fireproof fibers.
Features of flame retardant
chemicals
•Suppress smoke generators
•Will not stain most fabrics
•Can be sprayed, brushed, rolled on or dipped
•Non hazardous
•Non toxic
•Dries clear
How Do Chemicals Work?
When exposed to flame, fire retardant
chemicals cause a reaction that changes the
gases and tars in the fabric to carbon char.
Flame retardant fabric would eventually burn if
exposed to flame long enough. Slowing the
rate of burning however, is a big advantage
during a fire
Function of a Flame Retardant:
They interfere with combustion at various stages of the
process e.g. during heating, decomposition, ignition of flame
spread. Fire is gas phase reaction. For a substance to burn,
it must become a gas. As with any solid, a textile fabric
exposed to a heat source experiences a temperature rise. If
the temperature of the source is high enough and the net
rate of heat transfer to the fabric is great,pyrolytic
decomposition of the fiber substrate will occur. The
combustible gases mix with the ambient air and its oxygen.
The mixture ignites, yielding a flame, when its composition
and temperature are favorable. Part of the heat generated
within the flame is transferred to the fabric to sustain the
burning process and part is lost to the surroundings.
Durability of flame retardant
• permanently fire retardant, or durably fire retardant,
the flame retardancy will last for the life of the fabric.
The drapery can be laundered or dry-cleaned as
recommended by the drapery manufacturer
• Non –durable fire retardant, that have been topically
treated with chemicals, the flame retardancy of the
fabric will dissipate over time, particularly with
repeated cleaning. These fabrics must be dry-cleaned
with a non-liquid cleaning agent.
• Typically, the flame retardancy of topically treated
fabric is certified for one year
APPLICATION

Kevlar vest Fire fighter dress


Space traveller dress Kids wear

You might also like