Viscose Rayon
All viscose including High Wet Modulus scorch and ignite quickly when brought near the flame. Like cotton
they burn quickly with yellow flame when in the flame. When removed
from the flame they continue to burn. There is no afterglow unlike
cotton. The smell is that of burning paper. They leave a light gray and
feathery ash.
Acetate Rayon ( And Triacetate Rayon)
When
brought near the flame, it fuses away from flame turning black. When in
the flame, it flames quickly. The fabric puckers, sputters and melts.
It drips like burning tar. When removed from the flame, it continues to
burn and melt. It smells like vinegar. It leaves a brittle hard,
irregular black ash which is difficult to crush.
Nylon
Nylon
fuses and shrinks away from the flame when brought near the flame. In
flame, it burns slowly without melting. When removed from flame the
flame diminishes and tends to die out. It has somewhat pungent odor. It
leaves a hard, round, tough and gray bead.
Aramid ( Nomex)
When
brought near the flame, it shrinks away from the flame. When in the
flames it puckers and chars. When removed from flame, it extinguishes by
itself. It has no smell and it leaves a hard black bead.
Polyester
Polyester
fuses and shrinks away from flame. When in flame, it burns slowly with
melting. When removed from the flame, it burns with difficulty. It has
slightly sweetish smell. It leaves a hard round brittle, black bead.
Acrylics
Orlon,
Acrilan and Creslan and Zefran fuse and melt away from Flame when
brought near the flame. When in flame Orlon flames rapidly. The fiber
puckers, sputters and melts. Acrilan flames rapidly and melts. Creslan
flames and melts and Zefran sputters slightly and flames. When removed
flame all of acrylics continue to burn and melt. Orlon has a slightly
burning meat-like smell. Acrilan has a buring steak smell. Creslan has
sharp sweet smell and Zefran has a turmeric like smell. Orlon, Acrilan
and Cresla have hard, brittle and irregular black bead. Zefran has
irregular black ash that can be crushed easily.
Modacrylics
Verel
and SEF fuse and shrink away from the flame when approached near a
flame. When in flame, Verel burns very slowly with melting. SEF shrinks,
melts and smolders. When removed from flames, all modacrylics are self
extinguishing. Verel has a gunpower smell whereas SEF has a sharp sweet
smell. Verel leaves a hard and irregular black bead whereas SEF leaves a
hard and irregular black bead.
Spandax
Fuses
but doesn’t shrinks away from the flame when approached near the flame.
When in flame, it burns with melting. It has an acrid smell. It leaves a
soft, fluffy black bead.
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