Comprehensive methods for identifying the components of various clothing fabrics
There are many products in the workwear industry, and the fabrics are overwhelming. But how do we distinguish the fabrics and identify the authenticity of the fabrics? Let’s take a look at how to identify different fabrics for workwear.
1. Cotton fiber and linen fiber
Both cotton fiber and hemp fiber ignite as soon as the flame is near, burning quickly, with yellow flame and blue smoke. The difference between the smells emitted by the two when burning and the ashes after burning is that cotton emits a paper smell when burned, while hemp emits a grass ash smell after burning. After burning, cotton has very little powdery ash, which is black or gray, while hemp produces a small amount of off-white powdery ashes.
2. Wool fiber and silk
Mao smokes when exposed to fire and burns It bubbles, burns slowly, and emits the smell of burning hair. The ash after burning is mostly shiny black spherical particles that break into pieces when pressed with your fingers. When the silk is exposed to fire, it shrinks into a ball, burns slowly, makes a hissing sound, and emits the smell of burning hair. After burning, it condenses into small dark brown spherical ash, which can be broken into pieces when twisted by hand.
3. Nylon and polyester
NylonThe scientific name is polyamide fiber. It quickly shrinks and melts into a white gel when it is near the flame. It melts, drips and bubbles in the flame. There is no flame when burning. It is difficult to continue burning without the flame and emits It smells like celery, and the light brown melt is difficult to grind after cooling. The scientific name of polyester is polyester. It is easy to ignite and shrinks when it is near a flame. When burning, it melts and emits black smoke, showing a yellow flame and emitting an aromatic smell. After burning, the ashes turn into dark brown lumps that can be crushed with your fingers.
4. Polyacrylonitrile fiber and Polypropylene
Polyacrylonitrile fiber scientific name poly Acrylonitrile fiber softens and shrinks when close to fire. It emits black smoke after being ignited and the flame is white. It burns quickly after leaving the flame and emits the pungent smell of roasted meat. After burning, the ashes turn into irregular black lumps and are easily broken by hand twisting. The scientific name of polypropylene is polypropylene fiber. It shrinks when near the flame and is flammable. It burns slowly away from the fire and emits black smoke. The upper end of the flame is yellow and the lower end is blue. It emits the smell of petroleum. After burning, the ashes are hard round light yellow-brown particles, which are easy to twist by hand. broken.
5. Vinyl and vinylon
Vinyl scientific name is polyvinyl formal fiber , difficult to ignite, melts and shrinks near the flame, there is a little flame at the top when burning, when the fibers are melted into a gel, the flame becomes larger, there is thick black smoke, exudes a bitter smell, and small black bead-like particles remain after burning, which can be pressed with your fingers broken. The scientific name of chlorine fiber is PVC fiber. It is difficult to burn and extinguishes as soon as it is removed from the fire. The flame is yellow, with green white smoke at the lower end. It emits a pungent, pungent and sour smell. After burning, the ashes turn into dark brown irregular lumps, which are difficult to crush with fingers.
6. Spandex and fluoronex
Spandex’s scientific name is polyurethane fiber It melts and burns when close to the fire. The flame is blue when burning. It continues to melt and burn away from the fire, emitting a very pungent odor. After burning, the ash becomes soft and loose black ash. The scientific name of fluoronon is polytetrafluoroethylene fiber, and the ISO organization calls it fluorite fiber. It only melts near the flame, is difficult to ignite, and does not burn. The edge flame is blue-green carbonized, and it decomposes when melted. The gas is toxic, and the melt is hard and round black. beads. Fluoron fibers are commonly used in the fabric industry to make high-performance sewing threads.
7. Viscose fiber and copper Ammonium fiber
Viscose fiber is flammable , the burning speed is very fast, the flame is yellow, and it smells like burning paper. After burning, there is less ash, and it is a smooth and twisted belt-shaped light gray or off-white fine powder. Cupro-ammonium fiber, commonly known as tiger kapok, burns when near a flame. It burns quickly. The flame is yellow and emits an ester-sour smell. There are very few ash after burning, only a small amount of gray-black ash.
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