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Dongguan garment factory teaches you how to distinguish between pure cotton and polyester cotton?


Dongguan garment factory teaches you how to distinguish between pure cotton and polyester cotton?
Many people don't understand the difference between pure cotton and polyester cotton. In fact, it is not as difficult as everyone thinks. This question is also required by manufacturers when customizing work clothes, so it is good for everyone to know in advance. When we distinguish, we consider the cotton T-shirts from the following aspects: 100% cotton products, feel good, wear comfortable cotton T-shirts:
① Hygroscopicity: Cotton fiber has good hygroscopicity. Under normal circumstances, the fiber can absorb moisture into the surrounding atmosphere. Its moisture content is 8-10%, so it touches human skin and makes people feel soft and Not stiff. If the humidity of the cotton cloth increases and the surrounding temperature is high, all the water contained in the fibers will evaporate and disperse, so that the fabric will maintain a water balance and make people feel comfortable.
② Moisturizing property: Because cotton fiber is a poor conductor of heat and electricity, the thermal conductivity is extremely low, and because of its porosity and high elasticity, cotton fiber can store a large amount of air between the fibers, and air is a poor conductor of heat and electricity. Therefore, cotton fiber textiles have good moisture retention, and wearing cotton clothing makes people feel warm.
③ Heat resistance: Pure cotton fabrics have good heat resistance. When the temperature is below 110 ° C, it will only cause the water on the fabric to evaporate and will not damage the fibers. Therefore, cotton fabrics are not worn at ordinary temperature, used in washing, printing and dyeing, etc. Influence, thereby improving the washing and wearing resistance of pure cotton fabrics.
④ Alkali resistance: Cotton fibers have greater resistance to alkalis. Cotton fibers are in alkaline solution, and the fibers do not damage. This property is beneficial to washing and disinfection of pollution after taking. It can also be used for pure cotton textiles. Dyeing, printing and various processes are performed to produce more new varieties of cotton weaving.
⑤ Hygiene: Cotton fiber is a natural fiber. Its main component is cellulose, and there is a small amount of waxy substances, nitrogenous substances and pectin. Pure cotton fabrics have been inspected and practiced in various aspects, and the fabrics have no irritation and no negative effects when in contact with the skin. Long-wearing is beneficial to the human body and has good hygienic properties.
Polyester-cotton T-shirt: A blend of polyester and cotton. It feels good without cotton and does not absorb sweat well.
Polyester T-shirts are the largest variety with the highest output among synthetic fibers. Polyester has many trade names, and "polyester" is the trade name of our country. The chemical name is polyethylene terephthalate, which is usually formed by the polymerization of chemicals, so the scientific name often bears "poly". Polyester is also called polyester. Structure and performance: The structure shape is determined by the spinneret. The cross section of conventional polyester is circular and has no cavity. By changing the cross-sectional shape of the fiber, a special-shaped fiber can be produced. Improve brightness and cohesion. Fiber macromolecules have high crystallinity and orientation, so the fiber has high strength (20 times that of viscose fiber) and good abrasion resistance. Good elasticity, not easy to wrinkle, good shape retention, good light resistance and heat resistance, quick-drying and no ironing after washing, good wearability.
Polyester is a chemical fiber fabric that does not sweat easily. It feels thorny and pulls, it is easy to get static, and it looks bright with a slant.
(1) Visual identification method:
A. Cotton: There are many fluff, and the surface finish is poor. B. Polyester: Relatively few fluff, the surface finish is good, and there is a certain gloss.
(2) Combustion method:
A. Cotton: near flame, burning paper, burning ash, less ash, soft black ash
B, polyester cotton: near flame melting, dripping, foaming, weak fragrance, hard light brown

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