From：Join High (Xiamen) Fiber Tech Co., LTD Release time：2018-09-18
Polyester filament yarn is made of polyester. Polyester is an important variety in synthetic fibers. It is a fiber-forming polymer prepared by esterification or transesterification and polycondensation of terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG). - Polyethylene terephthalate (PET), a fiber made by spinning and post-treatment. The so-called polyester filament is a filament a length of more than a kilometer, and the filament is wound into a mass.
Polyester filament characteristics
Strength: The strength of polyester fiber is nearly 1 times higher than that of cotton and 3 times higher than that of wool. Therefore, polyester fabric is strong and durable.
Heat resistance: It can be used at -70 ° C to 170 ° C, which is the best in heat resistance and thermal stability of synthetic fibers.
Elasticity: The elasticity of polyester is close to wool, the wrinkle resistance is higher than other fibers, the fabric is not wrinkled, and the shape retention is good.
Abrasion resistance: Polyester's wear resistance is second only to nylon, ranking second in synthetic fiber.
Water absorption: Polyester has low moisture absorption rate and good insulation performance. However, due to low water absorption, the static electricity generated by friction is large, and the natural adsorption performance of dyes is poor. Therefore, polyester is generally dyed by high temperature and high pressure dyeing.
Dyeability: Polyester itself lacks hydrophilic groups or dye acceptor parts, so polyester has poor dyeability and can be dyed with disperse dyes or nonionic dyes, but the dyeing conditions are harsh.