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Some manufacturers of fabrics and work clothes sold on the market do not have labels that regulate the names and contents of fabric ingredients, leading unscrupulous merchants to take advantage of fake and inferior products to deceive consumers. In order to help consumers accurately identify the main real ingredients of work clothes fabrics, here is a simple common sense of identification for consumers to refer to when buying work clothes.
A simple method of identifying the composition of work clothes fabrics is the combustion method. The method is to draw a yarn containing warp and weft yarns at the seam of the work clothes, ignite it with fire, observe the state of the burning flame, listen to the smell of the burning yarn, and look at the burning residue, so as to infer the durability label of the work clothes Whether the marked fabric composition matches the fabric composition to determine the authenticity of the fabric composition.
1. Cotton fiber and hemp fiber Cotton fiber and hemp fiber are flammable when close to the flame, burning quickly, the flame is yellow, and blue smoke is emitted. The difference between the smell emitted by the two when burning and the ash after burning is that the cotton emits the smell of paper when burning, while the hemp emits the smell of plant ash when burning; after burning, the fly ash of the cotton is very small, black or gray, and the hemp produces a small amount of gray fly ash.
2. Wool fiber and silk cotton will smoke when exposed to fire, foam when burning, burn slowly, and emit a burning smell of hair. When exposed to fire, the silk shrinks into a ball, and the burning speed is slow, accompanied by a hissing sound, emitting the burning smell of hair, and forming a dark brown spherical ash after burning, which is broken by hand.
3. The scientific name of nylon and polyester nylon is polyamide fiber. Near the flame, it quickly curls and melts into a white gel. It melts, drips, bubbles in the flames. There is no flame when burning, and it is difficult to continue burning after leaving the flame. The light brown melt is not easy to grind after cooling. Polyester is the scientific name of polyester, easy to ignite. It melts as it approaches the flame. When it burns, it melts and releases black smoke. It has a yellow flame and gives off a fragrance.
Fourth, polyacrylonitrile fiber and polypropylene polyacrylonitrile fiber, the scientific name of polyacrylonitrile fiber, soften and shrink near the fire, black smoke after the fire, white flame, burning rapidly after leaving the fire, emitting the bitter and sour taste of burning meat, the ashes after burning are irregular black blocks, fragile when twisted by hand. The scientific name for polypropylene fiber is polypropylene fiber. It melts near the flame and is flammable. It burns slowly, black smoke rising from the fire. The upper end of the flame is yellow and the lower end is blue. broken
5. The scientific name of vinylon is polyvinyl formal fiber, which is not easy to ignite. It melts and shrinks near the flame, and there is a small amount of flame at the top when burning. When the fiber melts into a jelly-like flame, the flame becomes larger, with thick black smoke and bitterness. After burning, black beaded particles remain and can be crushed with your fingers. The scientific name of polyvinyl chloride is PVC fiber. It's hard to burn. It will be extinguished immediately after leaving the fire. The flame is yellow and the lower end is green and white smoke. It gives off a pungent, pungent and sour taste.
Polyurethane fiber, the scientific name of spandex and fluorine spandex, melts near the burning edge of the fire. The flame is blue when burning, allowing the fire to continue to melt and burn, emitting a very pungent smell. The ashes after burning are soft and loose black ashes. The scientific name of fluorine is polytetrafluoroethylene fiber, and ISO organization calls it fluorite fiber. It only melts near the flame, is difficult to ignite, does not burn. The edge flame is blue-green carbonization, melting and decomposition, the gas is toxic, and the melt is hard and round black. Beads. Fluorocarbon fibers are often used in the textile industry to make high-performance sewing threads.
7. Viscose fiber and copper ammonia fiber Viscose fiber is flammable, the burning speed is fast, the flame is yellow, the smell of hot paper is dissipated, and the ash is less after burning. It is a smooth, twisted ribbon light gray or gray white fine powder. Copper ammonium fiber, commonly known as tiger kapok, burns near the flame, burning fast, the flame is yellow, emitting ester acid smell.