Identification of textile fabrics ingredient
Fabric component identification method is simple combustion. Practice is in the fabric of the warp and weft yarn fabrics, the use of fire to ignite, observe the state of the combustion flame, Wen cloth yarn burning odor emitted after, look after combustion residue, in order to determine the durability of the label's clothing Are fabric composition, as to identify the authenticity of the fabric component.
First, cotton fiber and hemp fiber cotton fiber and hemp fiber are just near the flame that is burning, burning quickly, the flame was yellow, take the blue smoke. Both burning odor and burning ashes after difference is that the issue of paper burning smell of cotton, hemp ash smell of burning issue; after combustion, cotton has little powder ashes, was black or gray, hemp is to produce a small amount of white powder ashes.
Second, the hair fiber and silk Gross case of fire smoke, burning blistering, burning slow, exudes the coke smell of burning hair, ashes after burning mostly shiny black spherical particles, finger pressure that is broken. Silk shrunk slug a fire burning slow, accompanied by the hiss, emit hair fever burnt smell, form a dark brown after burning pellets ashes, hand twist that is broken.
Third, nylon and polyester Nylon generic polyamide fiber, near the flame that quickly huddled melt into a white jelly, melt in the flames burning dripping and blistering, no flame burning, difficult to leave the flame continues to burn, emitting a celery flavor, After cooling, the melt is not easy to crush light brown. Polyester scientific name of polyester fiber, easy to ignite, near the flame that is collapsing, black smoke when burned side melting side, yellow flame, emitting aroma, ashes after burning dark brown lumps with your fingers to crush.
Fourth, acrylic and polypropylene acrylic scientific name polyacrylonitrile fibers, near the fire to soften the melting shrinkage, black smoke after the fire, the flame was white, from the flame burn rapidly, emitting a smell of burning flesh bitterness, ashes after burning irregular black lumps hand twist brittle. Polypropylene generic polypropylene fiber, near the flame that is collapsing, flammable, slow burning and black smoke from the fire, the upper yellow flame, the bottom blue, emitting a smell of oil, after burning ashes of hard round light brown particles, easy to hand twist broken.
Fifth, polyvinyl alcohol and polyvinyl formal scientific name polyvinyl chloride polyvinyl alcohol fiber, easy to ignite near flame melting contraction, the top when a little flame burning until the fibers are melting into a gel flame becomes large, thick black smoke, the smell of incense exudes bitterness After burning the remaining black bead-like particles, finger crushed. Scientific name polyvinyl chloride polyvinyl chloride fibers, difficult to burn from the fire is put out, the flame was yellow, the bottom green white smoke, emitting pungent pungent spicy sour after combustion ashes irregular lumps of dark brown, easy to crush your fingers.
Six, spandex and Teflon Spandex scientific name polyurethane fibers melt side near the fire burning, burning blue flame, leave the fire continues to melt burning, emitting a pungent smell special, post-combustion ashes soft fluffy black gray. Scientific name Teflon PTFE fiber, ISO organization called fluorite fibers near the flame only melt, difficult to ignite, does not burn, the flame was blue-green edge carbonization, melting and decomposition, toxic gases, melt the hard round black beads. Teflon fiber in the textile industry, used in the manufacture of high-performance sewing thread.
Seven, viscose fiber and viscose fiber cupro flammable, burning fast, yellow flame, emitting burning paper smell, less ash after burning, was smooth twisted strip light gray or off-white fine powder. Cupro common name Tiger kapok, near the flame that is burning, burning speed, flame yellow, sporadic ester sour, very little ash after burning, only a small amount of gray and black ash.
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