Cotton
Small cotton cloth, close to the flame, you will see that the fabric does not melt or shrink. When exposed to the flame, the fabric burns very quickly. The flame will be yellow with blue smoke. The residue after burning is relatively small, generally black or gray. The ashes.
Linen
The ignition point of hemp is relatively low, and the burning speed is relatively fast. The flame of hemp burning is also yellow, and the smoke is also blue. After the flame is extinguished, the nose smells a faint smell of vegetation; the residue of hemp is also relatively small, generally shallow Gray or white.
Wool
When it encounters a fire, it will smoke first, and there will be bubbles in the burning part, and the burning speed of the wool is relatively slow. When it burns, it emits a scorching smell of burning hair. After burning, the ashes are shiny black spherical particles, which are crushed by pressing them with your fingers.
Silk
When the flame is close to the silk material, it curls up but does not melt. The burning speed is relatively slow. You can hear the sizzling sound. The flame will be extinguished by gently fanning it with your hand. It smells of burning hair. The residue is not all ashes. Black particles.
Polyester
Polyester is easy to ignite and catches fire quickly. When burning, it melts and burns at the same time. It emits black smoke. The flame is yellow. When the flame is extinguished, it emits an aromatic smell. The burning residue is a dark brown lumpy, which can be crushed with your fingers.
Viscose fiber
The composition of rayon is mostly viscose fiber, easy to burn, the burning speed is fast, the flame is yellow, and the smell is burning paper. After burning, the ash is relatively small, and the residue is relatively delicate, generally light gray or off-white fine powder .