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Ribbon method to identify
I do not know the two types of warp and weft yarn ribbon category split a few roots, respectively, with a lighter burning, combustion process observed in some of the physical phenomena to determine the warp and weft yarns of raw materials. Respectively, when the flame burning, melting conditions and the odor of burning ashes after observing the situation. Here are two ribbon Combustion physical performance parameters for your reference: nylon webbing: reduced melting in recent burning flame that melting, dripping and foaming are not directly continued burning taste like celery, hard, round, light brown to gray , beaded polyester ribbon: reduced melting in recent burning flame that is melting, dripping and foaming can be continued burning, smoke a few very weak sweet hard round, black or light brown
First, the cotton fiber and hemp fiber
Cotton fiber and hemp fiber is just near the flame that is burning, burning quickly, yellow flame, emitting blue smoke. Both odor and burning ash after burning the difference is that the issue of paper burning smell of cotton, hemp plant ash smell burning issue; combustion, there is very little cotton powder ashes, were black or gray, hemp is a small amount of white powder ash.
Second, nylon and polyester
Polyamide (nylon) scientific name of polyamide fiber, rolled past the flame that quickly melt into a white gel, melt in the flame burning dripping and blistering, burning without flame, difficult to leave the flame continued to burn, emitting a celery flavor, cooling light brown melt is not easy to crush. Generic polyester polyester fiber, easy to ignite, the flame that is nearly reduced melting, melting while black smoke while burning, yellow flame, emitting aromatic smells, ashes after burning dark brown lumps with your fingers to crush.
Third, acrylic and polypropylene (PP)
Acrylic scientific name polyacrylonitrile fibers, melt near the fire to soften reduction, black smoke after the fire, the flame is white, from the fire quickly burned, emitting a smell of burning flesh the bitterness, after the ashes of burned black irregular lumps, friable hand twist .Polypropylene fiber polypropylene scientific name, near the flame that is reduced melting, flammable, slow burning and black smoke from the fire, the flame yellow top, blue bottom, emitting a smell of oil, burned to ashes after a hard round light brown particles, easy to hand-twist broken.
Fourth, the polyvinyl alcohol and polyvinyl chloride
PVA polyvinyl formal fibers scientific name, is not easy to ignite, melt near flame contraction, the top of a little flame burning until the fibers are melt into a gel flame becomes larger, there is thick black smoke, distribute bitter smell of incense, burning the remaining black after small bead-like particles, crushed with your fingers. Generic PVC polyvinyl chloride fiber fibers, hard burning from the fire is extinguished, the flame is yellow, the bottom green white smoke, emitting pungent pungent spicy sour, black and brown ash after combustion of irregular lumps, easily crush fingers.
V. spandex with Teflon
Scientific name of polyurethane spandex fibers, melt near the fire while burning, burning blue flame, leave the fire burning to melt, emit a special irritant odor, burning after the ashes of soft fluffy black and gray. Scientific name Teflon PTFE fiber, ISO organization called fluorite fiber, melt only near the flame, difficult ignition, not burning, the flame was blue-green edge carbide, melting and decomposition, toxic gases, melt the hard round black beads. Teflon fiber used in the textile industry in the manufacture of high-performance sewing thread. Identification of fiber burning is simple, but the blended product is not easy to determine. Get direction from the latitude and longitude (ie, straight and horizontal direction) of the extract were burning a yarn Kam.
