Due to its good performance and wide range of uses, it has developed rapidly and has now become the world's largest chemical fiber. Polyester is mainly short fiber, which is mainly used for blending with cotton, wool viscose fiber, hemp and other chemical fibers to make various clothing textiles. However, in recent years, polyester filaments have developed rapidly. They are mainly processed into various textured yarns, such as polyester low-stretch yarns, polyester network yarns, etc., which are used for weaving woven fabrics and knitted fabrics, and can be used as outerwear and underwear.
Therefore, polyester has excellent abrasion resistance, second only to nylon. In addition, the initial modulus of polyester is high, so the fabric is crisp and dimensional stability is good. The main physical and chemical properties of polyester, form: The longitudinal surface of polyester is straight and smooth, and the cross section is round. Polyester is acid-resistant but not alkali-resistant, because the ester groups in polyester macromolecules will be hydrolyzed in lye, but it is also possible to use appropriate lye to imitate the silk.
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