Polyester (PET) fiber is a synthetic fiber spun from each link in the macromolecular chain through an ester group to form a fiber-forming polymer. my country abbreviates fibers with a polyethylene terephthalate content of more than 85% as polyester. There are many foreign trade names, such as Dacron in the United States, Tetoron in Japan, and Tetoron in the United Kingdom. Enka (Terlenka), Lavsan of the former Soviet Union, etc.China Wholesale carpet yarns manufacturers
As early as 1894, Vorlander used succinyl chloride and ethylene glycol to prepare low-molecular-weight polyester; in 1898, Einkorn synthesized polycarbonate; Carothers synthesized Aliphatic polyester: Most of the polyesters synthesized in the early years are aliphatic compounds, and their relative molecular mass and melting point are low, and they are easily soluble in water, so they do not have the use value of textile fibers. In 1941, Whinfield and Dickson in the United Kingdom synthesized polyethylene terephthalate (PET) with dimethyl terephthalate (DMT) and ethylene glycol (EG). This polymerization The fiber can be made by melt spinning with excellent performance. In 1953, the United States first established a factory to produce PET fiber. It can be said that PET fiber is a late-developed fiber among large varieties of synthetic fibers.
With the development of organic synthesis, polymer science and industry, a variety of practical PET fibers with different characteristics have been developed in recent years. Such as polybutylene terephthalate (PBT) fiber and polytrimethylene terephthalate (PTT) fiber with high elasticity, and fully aromatic polyester fiber with ultra-high strength and high modulus: the so-called The "polyester fiber" usually refers to polyethylene terephthalate fiber.
Polyester fiber has a series of excellent properties, such as high breaking strength and elastic modulus, moderate resilience, excellent heat setting effect, good heat resistance and light resistance. The melting point of polyester fiber is about 255°C and the glass transition temperature is about 70°C. It is stable in shape under a wide range of end-use conditions. The fabric is washable and wearable. In addition, it also has excellent resistance (such as resistance to organic solvents, soap, Detergents, bleaching solutions, oxidants) and good corrosion resistance, stable to weak acids, alkalis, etc., so it has a wide range of uses and industrial applications. The rapid development of the petroleum industry has also provided richer and cheaper raw materials for the production of polyester fibers. In addition, in recent years, the development of chemical, mechanical, electronic automatic control technology and other technologies has gradually realized short-range processes in the production of raw materials, fiber forming and processing. With the rapid development, continuity, automation and high-speed, polyester fiber has become the fastest-growing synthetic fiber variety with the highest output. In 2010, the global output of polyester fiber reached 37.3 million tons, accounting for 74% of the world's total synthetic fiber.