What is polyester fabric?

    Polyester fiber fabricis a synthetic fiber obtained by spinning polyester, which is formed through the polycondensation of organic dicarboxylic acid and diol. According to research reports on polyester chains, Polyester Fibers produced on a large industrial scale are made from polyethylene terephthalate, commercially known as polyester in China. It is currently the largest variety of synthetic fibers.

    The specific gravity of polyester is 1.38; its melting point ranges from 255 to 260℃, with adhesion starting at 205℃, and a safe ironing temperature of 135℃. Its moisture absorption is very low, only 0.4%. The breaking strength of filament is 4.5 to 5.5 grams per denier, and that of staple fiber is 3.5 to 5.5 grams per denier. The breaking elongation of filament is 15 to 25%, and that of staple fiber is 25 to 40%. High-strength fibers can reach a strength of 7 to 8 grams per denier and an elongation of 7.5 to 12.5%. Polyester has excellent wrinkle resistance, elasticity, and dimensional stability, as well as good electrical insulation properties, resistance to sunlight and friction, resistance to mold and insect infestation, good resistance to chemical reagents, and tolerance to weak acids and alkalis. At room temperature, it has a certain degree of resistance to dilute strong acids, but poor resistance to strong alkalis. Polyester has poor dyeing performance and generally requires high temperatures or the presence of carriers to be dyed with disperse dyes.

    Polyester fiber has high strength and elastic recovery ability, making it durable, wrinkle-resistant, and easy to care for. It has good light resistance, and except for being inferior to acrylic fiber, its sun resistance surpasses that of natural fiber fabrics, especially behind glass, where its sun resistance is excellent, almost on par with acrylic fiber. In addition, Polyester Fabric has good resistance to various chemicals, and acids and alkalis do not cause significant damage to it. It is also resistant to mold and insect infestation.

    However, polyester fibers have poor water absorption and lack of breathability, making them feel stifling when worn in summer. This is mainly due to the low moisture content and poor breathability of polyester fibers compared to natural fibers. This is why, when wearing clothes made of polyester fibers in summer, we feel uncomfortable when the clothes stick to our skin after sweating. Moreover, they are prone to adsorbing dust and generating static electricity. In winter, when there is heavy wind and sand, it can be imagined that clothes made of polyester fibers are easily contaminated with dust, which not only makes them unsightly, but the most annoying is the static electricity generated, which not only feels prickly, but also, in the case of pants, can cling to the skin due to static electricity, completely losing their pants shape and looking very unsightly. They are easily exploited by unscrupulous merchants, who pass off inferior materials as high-quality ones. Since polyester fibers are difficult to distinguish from real silk by touch and appearance, they have been exploited by unscrupulous merchants to pass off inferior materials as superior ones. Additionally, many consumers do not understand that polyester fibers are the scientific name for polyurethane, and are misled by the new name into thinking they are high-quality materials. Some even believe they are derivatives of real silk, making it difficult for consumers to distinguish between the concepts of real silk and polyester fibers.