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Form: The polyester longitudinal surface is straight and smooth, and the cross section is round. It is acid and alkali resistant. The ester group in the polyester macromolecule is bred in the lye to produce hydrolysis.
Extensibility and elasticity: It has high strength, large elongation and good elastic re-starting performance. According to the difference of processing, polyester has high-strength, low-stretch, low-strength and high-stretching models. But also because of his high strength, large elongation, good elasticity, so that the wear resistance is good, second only to nylon. In addition, its dimensional stability is also very good.
Hygroscopicity and dyeability: The layout is precise, the crystallinity is high, and the internal macromolecules have no hydrophilic gene, so that the moisture absorption is low and the dyeing is difficult. It has a moisture regain rate of only 0.4% under the usual atmospheric conditions, and has the benefits of easy washing and quick drying, but its sweat absorption and gas permeability are poor. Due to the poor dyeability of polyester, high temperature and high pressure dyeing is usually used.
Other properties: poor conductivity, easy to breed and produce static electricity. The fabric is easily dusted and stained. It has good chemical stability and is not susceptible to mold and insects.
There are dozens of varieties of polyester filament filaments and differentiated fibers, and the varieties are different, and their uses are not the same. In general, filaments are urgently used for knitting and weaving. Thin fabric woven from silk-like fibers for high-quality Shirts for men and women, fabrics with wool-like fibers have a firm, cool, soft hair feel, mostly used for outerwear, such as suits, etc. DTY is used as a bulk for knitted fabrics. Material, high-shrinkage filaments are mostly used in enamel fabrics, such as seersucker. Antistatic filament fabrics are urgently used for antistatic clothing and dustproof clothing, etc., and flame retardant fiber fabrics are used for fire fighting clothes and the like. Polyester filaments are industrially used in conveyor belts, tents, canvas, cables, fishing nets, etc., especially for polyester cords for tires, which are close to nylon in performance. Polyester can also be used for electrical insulation materials, acid-resistant filter cloths, and pharmaceutical industry fabrics.
Performance of various chemical fibers
The performance of various chemical fibers Polyester, the name of polyester is polyethylene terephthalate fiber, which is formed into a very fine fiber, referred to as polyester polyester fiber. Industrial production began in 1953. Because of its good performance and wide application, it has grown rapidly. It can be said to be the most chemical fiber in the world.