The combustion characteristics of several common fibers are discriminated as follows: 2

Update:25 May 2019
Summary:

  (5) Acrylic fiber: close to the flame: melting; […]

 

(5) Acrylic fiber: close to the flame: melting; contact with the flame: melting, smoking; leaving the flame: continue to burn, black smoke; smell: spicy taste; residue characteristics: black irregular beads, fragile.

(6) Polypropylene fiber: close to the flame: melting; contact flame: melting, burning; leaving the flame: continue to burn; smell: paraffin flavor; residue characteristics: gray-white hard transparent beads.

(7) Spandex fiber: close to the flame: melting; contact flame: melting, burning; leaving the flame: self-extinguishing; smell: specific taste; residue characteristics: white gelatinous.

(8) Chlorine fiber: close to the flame: melting; contact flame: melting, burning, black smoke; leaving the flame: self-extinguishing; smell: pungent smell; residue characteristics: dark brown lumps.

(9) Vinylon fiber: close to the flame: melting; contact flame: melting, burning; leaving the flame: continue to burn, black smoke; smell: characteristic fragrance; residue characteristics: irregular focus brown lumps.