The two kinds of warp-weft yarn are separated into several roots, respectively with lighter combustion, and some physical phenomena are observed during the combustion process to determine the material of warp and weft yarns. When burning, the flame, melting and emitting odor, burning ashes of the condition are observed.Webbing
Here are two types of ribbon material burning physical properties of the parameters, for your reference: Nylon Ribbon: Near the flame that melts melt, drip and foaming does not directly continue to burn like celery taste hard, round, light, brown to gray, bead-like. Polyester Ribbon: Near the flame that is melting and shrinking melt burning, dripping and foaming can continue to burn, a few have a very weak sweet hard round, black or light brown. Cotton fiber and hemp fibers, cotton fiber and hemp fiber are just near the flame that burns, burning quickly, the flame is yellow, blue smoke. The difference between the odor of combustion and the ashes after burning is that the cotton burns out the smell of paper, and the hemp burns out the smell of vegetation and ash, after burning, the cotton has very little powder ashes, black or gray, hemp produces a small amount of ash white powder ashes.Webbing
Nylon and polyester: nylon (nylon), the name of polyamide fiber, near the flame is rapidly curled into a white gel, in the flame melting and bubbling, burning without flame, leaving the flame difficult to continue to burn, emitting a celery flavor, cooling after the light brown melt is not easy to grind. Polyester name polyester fiber, easy to ignite, near the flame that melts, when burning the edge of the melting edge of black smoke, a yellow flame, emitting aromatic odor, burned ashes to black and brown hard block, with fingers can be broken.Webbing
Acrylic fiber name Polypropylene nitrile fibers, near the fire softened melt shrinkage, fire after the black smoke, the flame is white, from the flames after the rapid burning, emitting the bitterness of burning meat, burning ashes for irregular black hard block, hand twist fragile. Polypropylene fiber name, near the flame that melts, flammable, from the fire burning slow and black smoke, the upper end of the flame yellow, blue at the bottom, emitting oil flavor, burned ashes to hard round light yellow brown particles, hand twist fragile. Webbing
Polyvinyl alcohol, the name of PVA shrink formaldehyde fiber, not easy to ignite, near the flame melting shrinkage, burning at the top of a little flame, to the fiber melts into a rubber-like flame, there is black smoke, the smell of bitter incense, after the burning of the remaining small bead-like particles, can be crushed. Copolymer the name of polyvinyl chloride fiber, difficult to burn, from the fire is extinguished, the flame is yellow, the lower green white smoke, emit pungent pungent acrid sour, burning ashes to black brown irregular hard block, fingers difficult to twist.Webbing
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