Burning method to determine the fabric material

First, cotton fiber and hemp fiber
Cotton fiber and hemp fiber are the recent flame that is burning, burning rapidly, the flame was yellow, blue smoke. The difference between burning smell and burnt ashes is that the cotton burns and emits a smell of grass, and burns wood to give a sooty odor. After burning, the cotton has very little powdery ash, black or gray, while the hemp produces a small amount of ashes of gray powder.
Second, wool and silk
Mao in smoke, burning bubbles, burning slower, emitting a burning smell of stinky hair, burning ashes and more shiny black spherical particles, a finger that is broken. Silk shrinks into a group when the fire, burning slower, accompanied by sobbing sound, emits hair burnt smell, after burning to form dark brown ball-shaped ashes, hand twist that broken. The company is located in:
Third, nylon and polyester
Polyamide fiber nylon name, near the flame that is rapidly curled into a white gel-like, melting in the flame dripping and foaming, burning no flame, leaving the flame is difficult to continue burning, emitting a celery flavor, cooling light brown melts Material is not easy to grind. Polyester scientific name polyester fiber, easy to ignite, near the flame that is fused, burning while melting black smoke, was *** flame, emitting aroma, after burning ashes dark brown lumps, with your fingers can twist. The company is located in:
Fourth, acrylic and polypropylene
Acrylic fiber name polyacrylonitrile fiber, near the fire softening and melting, black smoke after the fire, the flame is white, quickly flames from the flame, emitting the bitter smell of fire burning meat, ashes after burning as irregular black lumps, hand twist fragile . Polypropylene fiber name polypropylene, near the flame that is melted, flammable, away from the fire burning slowly and black smoke, the upper flame ***, the bottom of the blue, exudes an oil taste, ashes after burning hard yellowish brown particles, hand Twist fragile. The company is located in:
Fifth, vinylon and vinylon
Vinyl name PVA valence fiber, not easy to ignite, near the flame melt contraction, the top of the combustion a little flame, until the fibers melt into a gel-shaped flame becomes larger, thick black smoke, exudes a bitter smell, burning black Beads, crushed by fingers. Polychlorophenylene name of polyvinyl chloride fiber, hard to burn, the fire is extinguished, the flame was ***, the bottom of the green white smoke, spicy irritating spicy sour, burning ash after dark brown irregular lumps, fingers hard to twist. The company is located in:
Six, spandex and fluoride
Spandex academic name polyurethane fiber, near the edge of the fire while melting the fire, the flame was burning blue, leaving the fire continued to melt, emitting a special irritating odor, ashes after burning soft fluffy black ash. Teflon fiber name PTFE, ISO organization called the fluorite fiber, near the flame only melting, it is difficult to ignite, do not burn, the edge of the flame was blue-green carbonization, melting and decomposition, toxic gas, the melt is hard round black Beads Freon fibers are commonly used in the textile industry to make high-performance sewing threads. The company is located in:
Seven, viscose fiber and copper ammonium fiber
Viscose fiber flammable, burning fast, the flame was ***, the smell of burning paper, burning less ashes, was smooth and smooth ribbon of light gray or gray powder. Cuprum ammonium fiber common name tiger cotton, near the flame that is burning, burning speed, the flame was ***, Ester scent distribution, after-burning little ashes, only a small amount of gray-black ash.

Flame-retardant fabrics in the prevention of fire has a good protective effect, fire-retardant overalls can effectively reduce the fire and sputter metal droplets on the human body injury - YuLong Safety