The structure and main chemical properties of polyester fiber
Polyester is a regenerated cellulose fiber that can be produced from cotton linters or purified wood pulp. It has hydrophobicity and thermoplasticity, good drape, and is easy to clean; it has a soft feel and certain recovery properties; it is resistant to acrylic acid solutions, sensitive to alkali solutions, and can be colored with disperse dyes. There are two types of polyester: diacetate and triacetate. Diacetate fiber and triacetate fiber are made from the same raw materials, but diacetate fiber is more hydrophilic and softer than triacetate fiber, has lower strength than viscose fiber, lower wet strength, and higher elongation. It is mainly used to produce workwear fabrics such as decorative fabrics, warp satin and taffeta; most cigarette filters are made of cellulose, the coloring temperature is close to the boiling point, and it can be set by dry heat and wet heat. Its mechanical properties are similar to those of diethyl acetate. The fibers are similar, but the wet strength decreases less; it has a crisp and thick feel and good shape setting; its application as fabric products is more diverse, such as underwear, skirts, slacks, fabrics, tablecloths and decorative fabrics, etc.
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