In the world of textile raw materials, acrylic yarn and polyester yarn are two very common synthetic fibers. Each has unique properties and applications. Understanding the core differences between these two yarns is important for manufacturers and consumers seeking high-quality, high-performance textiles.
1. Fundamental Differences in Materials and Composition
First, the two yarns differ significantly in their chemical composition:
Polyester yarn: A polyester fiber, formed by the polymerization of polyethylene terephthalate (PET). It is a high-molecular compound.
Acrylic yarn: A polyacrylonitrile fiber, primarily composed of polyacrylonitrile. Known for its wool-like properties, it is often referred to as "artificial wool."
2. Performance Comparison: Highlighting the Advantages of Polyester Yarn
| Features |
Polyester Yarn |
Acrylic Yarn |
| Strength and abrasion resistance |
Very high, performing exceptionally well among synthetic fibers, second only to nylon in abrasion resistance. |
Good, but inferior to polyester. |
| Elasticity and wrinkle resistance |
Excellent, known as a "no-iron" fabric, with elasticity close to wool. |
Good elasticity, but not as good as polyester in terms of recovery. |
| Moisture absorption |
Very low, with low moisture absorption, resulting in quick drying. |
Slightly better than polyester, but still low in moisture absorption among synthetic fibers. |
| Warmth retention |
Fair, relatively low. |
Excellent, fluffy and soft, with a wool-like feel and excellent warmth retention. |
| Heat resistance |
High, with good thermoplasticity and easy shaping. |
Relatively low in heat resistance, but not resistant to high-temperature ironing. |
| Sun and weather resistance |
Very good, second only to acrylic. |
Excellent, the best performance among synthetic fibers. |
| Application highlights |
Suitable for clothing fabrics, technical fabrics (such as conveyor belts and tents), and home furnishings. |
Suitable for sweaters, blankets, faux fur, and outdoor warming products. |
3. The Unique Value and Widespread Applications of Polyester Yarn
Due to its range of excellent properties, polyester yarn has become an indispensable raw material in the modern textile industry.
3.1. High Strength and Durability
Polyester yarn has excellent strength and abrasion resistance, meaning products made with it are more durable and less prone to tearing or fraying. This property makes it widely used in:
- Outdoor products: such as tents, backpacks, and sleeping bags, which need to withstand harsh environments and high-frequency friction.
- Industrial fabrics: such as filter cloth, tire cord, and conveyor belts, which require extremely high strength.
- Apparel fabrics: Commonly used in outerwear and sportswear to enhance durability.
3.2. Excellent Wrinkle Resistance and Shape Retention
Polyester yarn has very high elastic recovery, making clothing "easy to iron," meaning it stays flat after washing without ironing. This greatly enhances the practicality and ease of maintenance of clothing. Furthermore, its thermoplastic nature allows heat setting to maintain wrinkles and shapes for longer periods, providing greater flexibility in clothing design.
3.3. Low Moisture Absorption and Quick Drying
Polyester yarn has low moisture absorption, meaning it resists getting wet and dries quickly after washing. This makes it an ideal yarn for sweat-wicking sportswear, swimwear, and textiles designed for use in wet environments.
4. How to Choose Polyester or Acrylic Yarn?
The choice between acrylic and polyester yarn depends on the end use of the product and the performance priorities:
- If you require a material with high warmth, a soft and fluffy feel, and good light resistance (such as winter sweaters or blankets), acrylic yarn is a better choice.
- If you require high strength, abrasion resistance, wrinkle resistance, quick washability, and prioritize durability and shape retention (such as sportswear, outerwear, and industrial fabrics), polyester yarn is a better choice.
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