What does wool, nylon, cotton, chemical fiber and silk taste when burned?

Wool and silk belong to protein fiber, and both have the smell of burning hair when burning. Ashes are very small particles, which are broken with a gentle twist by hand.

Nylon, the trade name of nylon, generally includes nylon 6 and nylon 66. When burning, it melts and contracts first, and then burns slowly, which may automatically extinguish from the fire source, with celery flavor and hard brown granular ash.

Pure cotton, a cellulose fiber, burns quickly and smells like burning paper.

Chemical fiber, which is a big category, includes the above nylon, generally including the most widely used polyester, polypropylene fiber, acrylic fiber, spandex and so on.

Polyester: easy to ignite, it will melt and shrink when it is close to the flame. When burning, it emits black smoke while melting, showing a yellow flame and emitting an aromatic smell. After burning, the ash is a dark brown lump that can be crushed with your fingers.

Polyacrylonitrile fiber, the scientific name of acrylic fiber, softens and melts when it meets fire, and emits black smoke and white flame after fire. After leaving the flame, it burns quickly, giving off the bitter taste of burnt meat. The ash after burning is an irregular black block, which is fragile by hand twisting.

Polypropylene fiber, the scientific name of polypropylene fiber, is flammable when it melts near the flame. It burns slowly away from the fire, emitting black smoke. The upper end of the flame is yellow and the lower end is blue, giving off a smell of oil. After burning, the ash is hard, light yellow-brown particles and fragile by hand twisting.

Polyvinyl formal fiber, the scientific name of vinylon, is not easy to ignite and melts and shrinks near the flame. When it burns, there is a little flame at the top. When all the fibers melt into gel, the flame becomes bigger, thick black smoke comes out, and there is a bitter taste. After burning, small black beads will be left, which can be crushed with your fingers.