Polyester elastic yarn has high breaking strength and elastic modulus

Polyester elastic yarn is an ideal raw material for knitting or weaving. It is a kind of textured yarn of polyester chemical fiber. It has high breaking strength and elastic modulus, excellent heat setting, good resilience and heat resistance. It has the characteristics of high light fastness, high corrosion resistance, easy washing and quick drying, etc. It also has the characteristics of high bulkiness, good heat insulation, comfortable hand feeling and soft gloss. Polyester low-elastic yarn is made of polyester chips, high-speed spinning polyester pre-oriented yarn, and then processed by drawing false twisting. It is suitable for making fabrics, bedding and decorative items. The high shrinkage shrinkage of polyester low-elastic yarn is relatively fluffy, the cloth surface is rich, can be adjusted by the elastic process, the process selection is low, the residual dyeability is better, the strength is higher, the crimping rate is higher, in the hairless In the case of silk, a lower degree of residualness will be selected, and an excessively high degree of residualness will result in a low-strength polyester filament, a reduction in shrinkage, a difficulty in shaping and weaving of the Woven Fabric, and wrinkles.

Polyester tape is a fiber made by spinning and post-treatment. It has excellent setting properties and can be used for a long time after repeated washing in use. In addition to the presence of two terminal alcoholic hydroxyl groups in the polyester molecule, there are no other polar groups, and thus the polyester fiber is extremely poor in hydrophilicity. The polyester molecule contains about 46% ester group. The ester group can be hydrolyzed and pyrolyzed at high temperature. When it is alkali, it will be hydrolyzed to reduce the degree of polymerization. Polyester molecules also contain aliphatic hydrocarbon chains, which can make polyester molecules have certain Flexibility, but because there are benzene rings in the polyester molecule that cannot be rotated inside, the polyester macromolecules are basically rigid molecules, and the molecular chains are easy to maintain the linear shape. Therefore, the polyester macromolecule easily forms crystals under this condition, so the crystallinity and orientation of the polyester are high.