1. Cotton fiber and hemp fiber: Both cotton fiber and hemp fiber are burning near the flame, burning rapidly, the flame is yellow, and blue smoke is emitted. The difference between the scent of burning and the ash after burning is that the cotton fiber burns to emit a paper smell, the hemp fiber burns to give off the ash smell of grass; after burning, the cotton fiber has very little powder ash, which is black or gray, and the hemp fiber is produced. A small amount of off-white powder ash.
2, wool fiber and silk: wool fiber smokes in the fire, foaming when burning, slow burning, exudes the burnt smell of burning hair, after burning, the ash is mostly shiny black spherical particles, the finger is crushed . The silk huddled in a fire, and the burning speed was slower, with some snoring, giving off the smell of burning charcoal. After burning, it became dark brown, small globose ash, and the handcuffs were broken.
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3, nylon and polyester: nylon fiber name, near the flame is quickly curled into a white gel, melted in the flame and blistering, no flame when burning, leaving the flame difficult to continue burning, celery Flavor, the light brown melt is not easily broken after cooling. Polyester fiber name is easy to ignite. It is melted near the flame. When burning, it emits black smoke when it melts. It has a yellow flame and emits an aromatic odor. After burning, the ash is a black-brown hard block, which can be broken with fingers.
4, acrylic fiber and polypropylene; acrylic fiber name polyacrylonitrile fiber, near fire softening and melting, black smoke after the fire, the flame is white, burning quickly after the flame, emitting the bitter smell of the fire meat, after burning the ash is irregular black Hard block, handcuffs are fragile. Polypropylene fiber, polypropylene fiber, near the flame is melted, flammable, burning slowly from the fire and black smoke, the upper end of the flame is yellow, the lower end is blue, emitting oily smell, after burning, the ash is hard round light yellow brown granules, hand æ» easy broken.
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5, vinylon and polyvinyl chloride: vinylon scientific name polyvinyl formal fiber, not easy to ignite, near flame melting shrinkage, burning a little flame at the top, until the fiber melts into a gel-like flame becomes larger, there is thick black smoke, exudes bitter The smell, after burning, leaves a black bead-like position and can be crushed by fingers. The name of polyvinyl chloride fiber is difficult to burn. It is extinguished when it leaves the fire. The flame is yellow, and the lower end is green and white smoke. It emits pungent and pungent spicy and sour taste. After burning, the ash is dark brown and irregular lumps, and the fingers are not easy to be broken.
6, spandex and fluorocarbon: spandex scientific name polyurethane fiber, near the fire side of the edge burning, the flame is blue when burning, leaving the fire to continue to melt, emitting a special irritating odor, after burning ash is soft fluffy Black ash. Fluorine fiber PTFE fiber, 1S0 organization called fluorite fiber, near flame only melt, difficult to ignite, not burning, edge flame is blue-green carbonization, melting surface decomposition, gas toxic, melt is hard round black Beads. Fluorinated fibers are commonly used in the textile industry to make high performance sewing threads.
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7. Viscose fiber and copper ammonium fiber: Viscose fiber is flammable, the burning speed is very fast, the flame is yellow, and the smell of burning paper is emitted. After burning, the ash is less, and it is smooth and twisted with light gray or grayish white powder. Copper-ammonium fiber is commonly known as tiger kapok. It burns near the flame, and the burning speed is fast. The flame is yellow, and it smells sour. After burning, there is very little ash, only a small amount of gray-black ash.
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