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What are the advantages of polyester fiber

source：nhnadgj.cn  |  Release time：2025-06-04
     Polyester fiber, commonly known as "polyester", is a widely used synthetic fiber that exhibits significant advantages in textile, industrial, packaging and other fields due to its unique chemical structure and physical properties. The following are its core advantages and specific manifestations:
1、 High strength and wear resistance
     Core characteristics: Stable molecular chain structure, high fracture strength, significantly better wear resistance than natural fibers.
Mechanical properties:
     Breaking strength: 4-7 cN/dtex (higher than 2.6-4.5 cN/dtex for cotton fibers and 5-6 cN/dtex for wool), suitable for making load-bearing fabrics (such as bags, tents).
     Friction resistance: The wear resistance can reach more than 100000 times (about 20000 times for cotton fibers), and it is used in high-frequency friction scenarios such as carpets and work clothes, making it less prone to pilling and damage.
Application scenarios:
     Industrial field: conveyor belts, ropes, tire cords (replacing natural fibers to enhance durability).
     Clothing fabrics: sportswear, outdoor assault suit (resistant to pulling and tearing).
2、 Excellent wrinkle resistance and shape retention
     Unique advantages: Strong molecular chain rigidity, high elastic recovery rate, and resistance to deformation.
Anti wrinkle performance:
     Dry wrinkle resistance: The wrinkle recovery angle can reach 260 °~300 ° (cotton fiber is about 120 °~150 °), and the clothes are not easy to wrinkle after washing, and are free of ironing or only require slight ironing.
     Shape retention: When made into formal attire such as shirts and suits, it can maintain a crisp and straight silhouette for a long time, making it suitable for business attire and uniforms.
     Technical principle: Through the stretching and shaping process, fiber molecular chains are oriented and arranged to form a stable spiral structure that resists external deformation.
3、 Chemical corrosion resistance and environmental resistance performance
     Chemical stability: Polyester fibers have strong resistance to chemicals such as acids, alkalis, and oxidants.
Corrosion resistance:
     Acid resistant: Can withstand dilute sulfuric acid and hydrochloric acid (concentration ≤ 30%), better than cotton fiber (easily hydrolyzed by acid), suitable for chemical protective clothing and laboratory cloths.
     Alkali resistance: It has good stability in dilute alkali solutions (strong alkali soaking for a long time may cause slight hydrolysis), suitable for printing and dyeing processing and frequent contact with detergents (such as bedding).
Environmental resistance:
     Light resistance: The intensity decreases slowly under ultraviolet irradiation (better than acrylic, slightly lower than nylon), and the service life of outdoor products (such as sunshades and car covers) can reach more than 5 years.
     Mold resistance: The fiber surface is smooth and not prone to mold growth, making it suitable for humid environments such as bathroom mats and curtains.
4、 Easy care and fast drying characteristics
     Practical advantages: Low hydrophilicity and poor moisture absorption, but it brings convenience of easy maintenance and quick drying.
Quick drying performance:
     The moisture regain rate is only 0.4% (8.5% for cotton fibers), making it difficult for moisture to adsorb onto the fiber surface. Sweat or rainwater evaporates quickly, and sportswear (such as quick drying T-shirts) can keep the skin dry.
     After washing, the dehydration efficiency is high, and the drying time is shortened by more than 50% compared to cotton clothes.
Easy to protect rationality:
     Stain resistance: Oil stains, ink stains and other stains are not easy to penetrate the inside of the fibers, and can be easily removed by detergents (need to be combined with high-temperature washing to enhance the effect).
     Antistatic: By modifying treatment (such as adding anti-static agents), the accumulation of static electricity can be reduced, making it suitable for autumn and winter clothing and electronic workshop work clothes.
5、 Low cost and processing adaptability
     Economic and technological advantages: readily available raw materials, mature production processes, and the ability for large-scale industrial production.
Cost advantage:
     The raw materials are sourced from petrochemical products (PTA and MEG), with stable prices lower than natural fibers (such as wool and silk), suitable for the mass consumer market (such as fast fashion clothing and home textiles).
     High production efficiency: Short fibers can be blended with cotton and linen, while long fibers can be directly woven, reducing processing costs for textile enterprises.
Processing flexibility:
     Natural fiber texture can be simulated by changing the cross-sectional shape (such as circular or irregular cross-section):
     Triple leaf cross-section: enhances gloss, used for simulating silk fabrics;
     Hollow cross-section: enhances warmth and is used as a filling material for down jackets (such as goose down polyester fiber).
     Support multiple textile processes: woven, knitted, non-woven (such as non-woven masks, geotextiles).

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