Polyester

Update:29 Aug 2017
Summary:

   Polyester is an important species in synthetic fiber […]

   Polyester is an important species in synthetic fibers, is China's polyester fiber trade name. It is based on pure terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials by esterification or ester exchange and polycondensation reaction prepared by the fiber polymer - Polyethylene terephthalate (PET), fibers made by spinning and post-treatment.
   Performance
   1, high strength. The short fiber has a strength of 2.6 to 5.7 cN / dtex and a high strength fiber of 5.6 to 8.0 cN / dtex. Due to low moisture absorption, its wet strength and dry strength is basically the same. Impact resistance than nylon 4 times higher than the viscose fiber 20 times higher.
   2, good flexibility. Elastic close to the wool, when the elongation of 5% to 6%, almost completely restored. Wrinkle resistance than other fibers, that is, fabric is not wrinkled, good dimensional stability. Elastic modulus of 22 ~ 141cN / dtex, 2 to 3 times higher than nylon.
   3, heat resistance and thermal stability in the synthetic fiber fabric is the best.
   4, polyester surface is smooth, the internal molecules arranged closely.
   5, good wear resistance. Abrasion resistance after the best wear resistance of nylon, than other natural fibers and synthetic fibers are good.
   6, good light resistance. Light resistance after acrylic.
   7, corrosion-resistant. Resistant bleach, hydrocarbons, ketones, petroleum products and inorganic acids. Resistant alkali, not afraid of mold, but the hot alkali can make it decomposition.
   8, poor dyeing, but the color fastness is good, not easy to fade.
   Variety
   Polyester varieties are short fiber, drawn silk, deformation yarn, decorative filament, industrial filament and a variety of differentiated fiber.

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