Polyester, a common synthetic fiber, is widely used in textiles and other fields due to its many excellent properties. However, its inherent flammability also poses certain safety hazards. With increasing public awareness of safety, the research and application of flame-retardant polyester fibers have become a hot topic.

Flame-retardant polyester fibers are produced by modifying ordinary polyester using various techniques to give it flame-retardant properties. Currently, methods to improve the flame-retardant properties of polyester mainly include chemical modification, coating treatment, and composite fiber manufacturing. Chemical modification involves introducing flame-retardant elements containing phosphorus, halogens, or nitrogen during the polymerization process, giving the polyester fiber itself flame-retardant properties. For example, using phosphate ester compounds as flame retardants can form a protective char layer during combustion. Coating treatment involves applying a flame-retardant coating to the surface of polyester fabric; this method is simple and low-cost. Silicon-based coatings, for instance, can significantly improve the limiting oxygen index of polyester fabrics. Composite fiber manufacturing involves blending flame-retardant fibers with ordinary polyester fibers through spinning, and is widely used in furniture, automotive interiors, and other fields.

Flame-retardant polyester fibers have important applications in many fields. In protective clothing, such as fire suits and industrial protective clothing, they provide excellent fire protection for wearers. In the interior design of public places and vehicles, such as curtains and seat fabrics, the use of flame-retardant polyester fibers can improve the fire safety level of the space.

With continuous technological advancements, flame-retardant polyester fibers will develop towards a more environmentally friendly and efficient direction in the future, providing more reliable safety guarantees for people's lives and production.