Acrylic yarn is a type of synthetic fiber. Because its properties closely resemble those of wool, it is often referred to as "synthetic wool." Molecular Structure: Internally, acrylic possesses a unique macromolecular structure characterized by an irregular helical conformation. While it lacks strictly defined crystalline regions, its structure is distinguished by areas of high-order arrangement and low-order arrangement. This specific structure endows acrylic with excellent thermal elasticity (making it suitable for processing into bulked yarns). Furthermore, acrylic has a low density-even lower than that of wool-resulting in fabrics with excellent thermal insulation properties. It exhibits good elasticity-surpassed only by polyester-and is approximately twice as elastic as nylon, offering superior shape retention.
Acrylic boasts the best light resistance among all synthetic fibers; even after one year of outdoor exposure, its tensile strength decreases by only 20%. Due to its excellent bulkiness and soft feel, acrylic yarn is frequently used to manufacture knitting yarns, carpets, and similar products. Thanks to its superior weather resistance, as well as its resistance to mold and moths, it can be spun either alone or blended with natural fibers; consequently, it is widely utilized in various industrial and decorative applications, such as tarpaulins, curtains, and upholstery. Moreover, given its excellent thermal insulation capabilities, it is also used in the production of clothing, plush fabrics, and faux fur.
The key characteristics of acrylic yarn include outstanding resistance to sunlight and weathering (ranking first among synthetic fibers), low moisture absorption, and a relative difficulty in dyeing.
Pure acrylonitrile fiber, due to its dense internal structure, possesses poor performance characteristics for apparel use. Therefore, secondary and tertiary monomers are added during production to enhance its properties: the secondary monomer improves elasticity and tactile feel, while the tertiary monomer improves dyeability.
Applications: Primarily used for consumer goods, acrylic can be spun alone or blended with other fibers to produce a wide variety of woolen fabrics, knitting yarns, blankets, and sportswear. It is also utilized in the manufacture of faux fur, plush fabrics, bulked yarns, fire hoses, umbrella fabrics, and similar products.