Which Synthetic Reigns Supreme? A Practical Comparison of the Six Major Fibers

In the textile industry, nylon, polyester, acrylic, vinylon, polypropylene, and chloronite are collectively known as the “Six Major Fibers” and are the six most widely used synthetic fibers 。 They are synthesized from chemical raw materials, each with its own advantages and disadvantages. Thanks to their unique material properties, they are applied in various fields such as apparel, home textiles, industry, and protection. Understanding the core differences among these six fibers is essential to accurately grasp the material logic and applicable scenarios of various textiles.

Polyester: The top-producing all-purpose fiber

Polyester fiber, officially known as polyester fiber, is currently the most produced and widely used synthetic fiber, earning it the title of the “all-rounder” in the chemical fiber world. Its core advantages are very prominent, offering excellent strength, wrinkle resistance, and shape retention. Clothes made from it are sturdy and resistant to deformation, resistant to sun and abrasion, easy to wash and dry, simple to care for, and very affordable, making it the preferred base fabric for everyday textiles.

However, it also has obvious drawbacks: poor moisture absorption, making it easy to feel stuffy when worn close-to-the-skin, generating static electricity and pilling, and not resistant to strong alkali corrosion. With balanced comprehensive performance, polyester has a wide range of applications, mostly used in the apparel field for coats, shirts, sportswear, and sun-protective clothing; In the home textile sector, it is commonly used for curtains, bedding, and sofa fabrics; In industry, it can also be used to make conveyor belts, filter cloths, and ropes, which are core raw materials for most windproof, wrinkle-resistant, and quick-drying tech fabrics 。

Nylon: a highly abrasion-resistant, highly elastic fiber

Nylon, commonly known as nylon, is the earliest industrialized synthetic fiber. Its abrasion resistance ranks first among the six major nylons, with high breaking strength and excellent elastic recovery. It is lightweight and soft, resistant to twists and fatigue, and the fabric is sturdy, durable, and fits the body shape.

However, nylon has poor heat and sun resistance, aging and deformation easily after prolonged exposure, and its moisture absorption is average. Pure nylon clothing offers limited comfort. It is the core material of high-end functional fabrics, commonly used in outdoor jackets, yoga wear, stockings, and sports tights in the clothing field; Outdoor scenes are often used to make climbing ropes, parachutes, backpack fabrics, and fishing nets; In industry, it is the preferred choice for wear-resistant conveyor belts, tire curtain wires, and wear-resistant tooling, focusing on demands for wear resistance, high elasticity, and lightweight performance.

Acrylic: Synthetic wool with excellent cost performance

Acrylic is known as “artificial wool.” Its core advantages are fluffiness, softness, excellent warmth, and a feel and appearance that closely mimic natural wool. It is lighter in texture, highly sun-resistant, resistant to mold and insect damage, and priced far below natural wool, offering outstanding value for money.

However, it has poor abrasion resistance, average fiber elasticity, pilling easily, and is sensitive to strong alkalis. Based on its core characteristics of imitation wool and warmth, acrylic is mostly used in thermal textiles such as sweaters, scarves, hats, blankets, and artificial fur; In home textiles, it is also commonly used for decorative fabrics and carpets, suitable for scenarios that require warmth and low-cost, easy-to-maintain care.

Vinylon: rayon close to nature

Vinylon is the most absorbent type of synthetic fiber. Its hand and touch feel are very similar to natural cotton, skin-friendly, breathable, alkali-resistant, weather-resistant, and the material is non-toxic and environmentally friendly, hence it is also called “rayon.”

Its shortcomings are also quite obvious: poor heat resistance, shrinkage easily in hot water, low fiber strength, fabric wrinkles easily, and poor fit retention. Vinylon is more suitable for close-fitting wear and is often blended with pure cotton to make underwear and labor protection clothing; Industrially, it is used for alkali-resistant filter cloth, fishing nets, and ropes; In the medical field, it is also used to make gauze and hygiene products, relying mainly on its moisture-absorbing, skin-friendly, eco-friendly, and non-toxic properties.

Polypropylene: a lightweight, corrosion-resistant water-repellent fiber

Polypropylene is the fiber with the lowest density among the six major fibers. It can float on water, is extremely lightweight, completely water-resistant, highly resistant to acid and alkali corrosion, and also has a certain degree of antibacterial properties, resulting in lower production costs.

However, it is not sun-resistant or heat-resistant, making dyeing difficult, and the fabric feels relatively hard to touch and lacks comfort. Polypropylene is mostly used in disposable and anti-corrosion applications; in civilian applications, it is commonly found in disposable mask fabrics, diapers, sanitary napkins, and non-woven fabrics; Industrially, it is used for geotextiles, waterproof membranes, and anti-corrosion filter fabrics; In the medical protection field, it is used to make protective clothing and isolation gowns, with their water-repellent, lightweight, and corrosion-resistant features as their core.

Chloride: A fiber specialized for flame retardant protection

The biggest feature of chlorine is its inherent flame retardancy; it will immediately extinguish when removed from a fire source. It is also resistant to acids, alkalis, chemical corrosion, good insulation, less likely to generate static electricity, and provides excellent dust resistance, making it a protective fiber specifically designed for high-risk scenarios.

Its practical limitations are also prominent: poor warmth, a relatively hard feel, and poor thermal stability, making it unsuitable for making close-fitting clothing. Chlorine is mainly used in specialized protective fields, such as flame-retardant workwear and anti-corrosion protective clothing in the chemical and mining industries; In industry, it manufactures filter cloth and insulating fabrics for chemical plants; In home textiles, dustproof carpets are used, focusing on special protection requirements such as fire resistance, corrosion resistance, and anti-static.

Six core selection logics

Different fibers meet different needs, so you can accurately benchmark when choosing: choose polyester for wrinkle resistance and easy care; choose nylon for high wear resistance and high elasticity; choose acrylic for warmth-like fur for warmth; choose vinylon for moisture-absorbing and skin-friendly properties; choose polypropylene for lightweight waterproofing; choose chloronylon for flame-retardant and corrosion-resistant products.

From everyday wear to industrial protection, these six major synthetic fibers support half of the textile industry with their irreplaceable properties. As their processes upgrade, they will continuously optimize their performance to meet more diverse scenario needs, becoming indispensable core materials in the textile field.