Popular Science On Chemical Structure Of Polyester Fibers

Popular Science On Chemical Structure Of Polyester Fibers

Products: polyester sewing thread
Wear resistance: excellent, second only to nylon
Product characteristics: high strength, good thermoplasticity
Shrinkage rate: good elasticity, 5% - 6% elongation, can be completely restored
Corrosion resistance: excellent acid and alkali resistance

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Product Details

Products: polyester sewing thread

Wear resistance: excellent, second only to nylon

Product characteristics: high strength, good thermoplasticity

Shrinkage rate: good elasticity, 5% - 6% elongation, can be completely restored

Corrosion resistance: excellent acid and alkali resistance

5000Y polyester sewing thread

Polyester is the most widely used synthetic fiber in the world. Polyester is widely used in China, and China has gradually developed into an important processing base of polyester products in the world. Yiwu City, Zhejiang Province, China is one of the major producers. Yinxiang is located here.


Today, Yinxiang will introduce you to the chemical structure of polyester and give you a full understanding of polyester.Polyester molecule consists of short aliphatic hydrocarbon chain, ester group, benzene ring and alcohol hydroxyl end group. There are no other polar groups in polyester fibers except two terminal alcohols and hydroxyl groups, so the hydrophilicity of polyester fibers is very poor. Polyester molecule contains about 46% ester group, ester group can be hydrolyzed and pyrolyzed at high temperature, saponified when alkali occurs, which reduces the degree of polymerization. Polyester molecule also contains aliphatic hydrocarbon chain, which can make polyester molecule flexible to some extent, but because polyester molecule has benzene ring which can not rotate internally, polyester macromolecule is basically rigid molecule. Molecular chains are easy to maintain linear shape. Therefore, polyester macromolecule is easy to crystallize under this condition, so the knotness and orientation of polyester are higher.

8000Y black sewing thread

Therefore, Yinxiang sewing thread fabric made of high-quality polyester has smooth surface, high strength, easy washing and quick drying, good thermoplasticity, and can be used for pleated skirts or clothes with long wrinkles.

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