In 1941, J.R. Winfield and J.T. Dixon of Britain first developed polyester fiber in the laboratory with terephthalic acid and ethylene glycol as raw materials, named Terylene. In 1953, the United States produced polyester fiber called Dacron. Subsequently, polyester fiber has been rapidly developed in the world. In 1960, the world output of polyester fiber exceeded that of polyacrylonitrile fiber, and in 1972, it surpassed that of polyamide fiber, becoming the largest variety of synthetic fiber.
Nowadays, polyester fibers account for a large part of the clothing fabrics that people wear. In addition, there are acrylic fibers, nylon fibers, spandex, etc. Polyester fiber , also known as "polyester", was invented in 1941 and is the largest variety of synthetic fibers. The biggest advantage of polyester fiber
1. High strength and toughness: short fiber strength is 2.6~5.7cN/dtex, and high strength fiber strength is 5.6~8.0cN/dtex. Due to its low moisture absorption, its wet strength is basically the same as its dry strength. The impact strength is 4 times higher than nylon and 20 times higher than viscose fiber.
2. Good elasticity: the elasticity is close to that of wool, and it can be almost completely recovered when it is stretched by 5%~6%. Wrinkle resistance is better than other fibers, that is, the fabric does not wrinkle and has good dimensional stability. The elastic modulus is 22~141cN/dtex, 2~3 times higher than nylon Polyester fabric has high strength and elastic recovery ability, so it is firm and durable, wrinkle resistant and iron free.
3. Heat resistant polyester fiber is made by melt spinning, and the formed fiber can be melted by heating again, which belongs to thermoplastic fiber. The melting point of polyester fiber is relatively high, while the specific heat capacity and thermal conductivity are both small, so the heat resistance and thermal insulation of polyester fiber are higher. It is the best synthetic fiber.
4. Good thermoplasticity and poor melting resistance: because the surface of polyester is smooth and the internal molecules are closely arranged, polyester is the best heat resistant fabric in synthetic fiber fabrics, with thermoplasticity, which can be used to make pleated skirts, and the pleats are durable. At the same time, the melting resistance of polyester fabric is poor, and it is easy to form holes when encountering soot, sparks, etc. Therefore, try to avoid contact with cigarette butts and sparks when wearing.
5. Good abrasion resistance: the abrasion resistance is only inferior to nylon with the best abrasion resistance, and better than other natural fibers and synthetic fibers.
6. Good light resistance: second only to acrylic fiber. The light resistance of polyester fabric is better than that of acrylic fiber, and its light resistance is better than that of natural fiber fabric. Especially, the sun resistance behind the glass is very good, almost equal to that of acrylic fiber.
7. Corrosion resistance: It can resist bleaching agents, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. It is resistant to dilute alkali and is not afraid of mold, but can be decomposed by hot alkali. It also has strong ability to resist acid, alkali and ultraviolet rays