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Synthetic steps of polyester

2021/11/12

Synthetic steps of polyester

The production process of polyester includes two parts: polyester melt synthesis and melt spinning. The raw materials for synthetic polyester are polyethylene terephthalic acid and ethylene glycol, which are mainly obtained from petroleum cracking, and can also be obtained from coal and natural gas. Heating and cracking of petroleum produces toluene, xylene and ethylene, etc. After chemical processing, terephthalic acid or dimethyl terephthalate and ethylene glycol can be obtained.

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Uses of polyester

2021/11/09

Uses of polyester

Polyester fiber has high strength, high modulus, and low water absorption, and it has a wide range of uses as civil fabrics and industrial fabrics. As a textile material, polyester staple fiber can be purely spun, and is also especially suitable for blending with other fibers; it can be blended with natural fibers such as cotton, linen, wool, and other chemical staple fibers such as viscose, acetate, polypropylene Blending of short fibers such as nitrile fibers.

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Modification of polyester

2021/11/09

Modification of polyester

Compared with natural fibers, polyester has disadvantages such as low moisture content, poor air permeability, poor dyeability, easy pilling, fluffing, and easy staining. In order to improve these shortcomings, methods of chemical modification and physical deformation are adopted. The chemical modification methods are:

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