How to distinguish nylon webbing and polyester webbing
Will be two kinds of I do not know the type of ribbon weft yarns out of several, respectively, with a lighter burning, combustion process to observe some physical phenomena to determine the raw materials of latitude and longitude yarn. Combustion to the flame, the melting situation and the smell of the smell, after burning the ashes of the situation observed.
The following are two kinds of webbing material combustion physical performance parameters for your reference:
Nylon Ribbon: near the flame that is melting melting, dripping and foaming is not straightforward like celery taste hard, round, light, brown to gray, bead
Polyester webbing: near the flame that is melting fusible, dripping and foaming can keep burning, a few very weak smoke strong hard round, black or light brown
First, cotton fiber and hemp fiber
Cotton fiber and hemp fiber are just the flame that is burning, burning quickly, the flame was yellow, blue smoke. The difference between the two is the smell of burning and the burning of the ashes, the burning of cotton burning paper smell, burning burning grass ash smell; burning, the cotton has very little powder ashes, black or gray, hemp produces a small amount of gray powder ashes.
Second, nylon and polyester
Polyamide fiber, near the flame that is rapidly crumpled into a white gelatinous, in the flame melt droplets and foaming, no flame when burning, leaving the flame difficult to continue to burn, emitting celery taste, after cooling Light brown melt is not easy to break.
Polyester scientific name polyester fiber, easy to ignite, near the flame that is melting, burning while smothering black smoke, yellow flame, distributed aromatic smell, burning ashes after the dark brown lumps, with your fingers can be broken.
Third, acrylic and polypropylene (PP)
Acrylic fiber name polyacrylonitrile fiber, near the fire softening fuse, after the fire black smoke, the flame was white, from the flame after the rapid burning, emitting a burning bitter smell of the meat, burning ashes after the irregular black lumps, hand twist fragile The
Polypropylene fiber, near the flame that is melting, flammable, from the fire burning slowly and black smoke, the top of the flame yellow, the bottom of the blue, emitting a smell of oil, burning ashes after the hard light yellow brown particles, hand twist easy broken.
Four, vinyl and polyvinyl chloride
Polyvinyl alcohol formaldehyde formaldehyde fiber, easy to ignite, near the flame melt contraction, burning a little flame at the top, until the fibers are melting into a colloidal flame larger, thick black smoke, distributed bitter smell, burning black after burning Bead-like particles can be crushed with your fingers.
Polyvinyl chloride fiber name, non-flammable, from the fire that is extinguished, the flame was yellow, the bottom of the green white smoke, sporadic spicy spicy taste, burning ashes after the dark brown irregular lumps, fingers are not easy to twist.
5, spandex and fluoro
Spandex scientific name polyurethane fiber, near the fire side of the edge of burning, burning flame blue, leaving the fire to continue to melt, emitting a special irritating smell, burning ashes after the soft fluffy black and gray. Teflon name polytetrafluoroethylene fiber, ISO organization called fluorite fiber, near the flame only melt, difficult to ignite, do not burn, the edge of the flame was blue and green carbonization, melting and decomposition, gas toxic, the melt is hard round black Beads. Teflon fiber is often used in the textile industry to manufacture high performance sewing thread.
It is easy to identify the fiber with the combustion method, but if the webbing blended product is not easy to judge. From the latitude and longitude direction (ie, straight and horizontal direction) each extracted a yarn were burned Kam.