Polyester filament properties 01. Initial modulus (rigidity index) 02. Strength polyester filament has high strength, about 4.5~8 CN/dtex, its impact strength is 4 times higher than that of cotton fiber and 20 times higher than viscose fiber, which can satisfy most garments and industries. Claim. Due to its low hygroscopicity, its wet strength is essentially the same as the dry strength. 03. Elasticity The elasticity of polyester is not as good as nylon. For example, the elastic recovery rate at 2% tension is 96%, and the elastic recovery of nylon under the same conditions is 98%. However, it should be noted that since polyester has a high initial modulus, its dimensional stability is particularly it is good. 04. Good recovery of wrinkles Polyester's wrinkle resistance is better than other fibers, that is, the fabric is not wrinkled and the dimensional stability is good. This feature is derived from the internal rigidity of the fiber, which is relatively rigid in both dry and wet states, and can reduce fabric deformation caused by wrinkles. 05. Resilience Relative to nylon, because of its low elongation at break, its energy absorption and wear resistance are low. 06. The sorption of water In this respect, polyester is very poor, both in terms of resurgence in wet air and expansion of water; the equilibrium moisture content is 0.4%, which is inferior to that of nylon, and similar to acrylic. 07. Shrinkage Polyester is hydrophobic, with little or no shrinkage, especially after correct heat setting, it can maintain the shrinkage requirement within 1%. 08. Density Polyester density is close to 1.38g/m3, which is higher than nylon (1.14g/cm3) and polypropylene (0.90g/cm3). Yiyou Textile--Tooling and outdoor fabric custom-made experts 09. The resistivity is higher than the resistivity of nylon, generally 1011-1014 ohm/cm, and nylon is 109-1014 ohm/cm. 10. Pilling Fiber balls are caused by loose and broken filaments in the fabric. Because of the high strength of the fibers, the fiber balls are retained on the fabric. Producers have recently produced polyesters that have low tensile strength and are not easily formed into balls. They also maintain high abrasion resistance. 11. Glass transition temperature The temperature at which the glassy state transitions to a high elastic state is the lowest temperature at which the macromolecular segment of the amorphous polymer can move freely, expressed by Tg. This gives the fiber a good condition for drafting deformation. The polyester has a glass transition temperature of 80 ° C in the dry state and 69 to 70 ° C in the wet state, which is beneficial to the curling and deformation of the yarn and the heat setting of the fabric. 12. Poor dyeability Because there is no specific dyeing group on the polyester molecular chain, and the polarity is small, the dyeing is difficult, the dyeability is poor, and the dye molecules are not easy to enter the fiber. Dyeing with disperse or nonionic dyes results in better results and requires stronger dyeing conditions, including padding, drying and thermal fixing. 13. Chemical resistance It is resistant to bleach, oxidizing agents, petroleum products and inorganic acids. Resistant to dilute alkali, not afraid of mildew, but hot alkali can decompose it. Acid and not alkali resistant. 14. Flammability Polyester fiber is flammable, but it will also self-destruct due to melting. Blended with cellulose fibers to burn more easily, producing a yellow flame and smoke. A special finishing method or a flame retardant must be added during spinning to achieve the flame retardant effect of the fabric. A method used to distinguish between polyester and cotton, polyester and silk in daily life. 15. Good light resistance Polyester fabric has good light resistance, and its light resistance is better than natural fiber fabric except that it is worse than acrylic fiber. It has a certain resistance to UV-induced degradation and produces a slight yellowing after illumination. 16. Adhesive Adhesive ability is poor, and can only be used for tire cord fabric and coated fabric when the surface is coated with special oil or rubber. Please indicate the source.
Chinese style robes, with a little retro style, with some nobility, in addition to adding some modern designs, constitute this fashionable and comfortable, breathable and soft robes, which can also be worn as pajamas at home or at home. Dress in formal occasions, attend some banquets and line up.
Fashionable female knit robe, made of breathable and soft fabric, suitable for many occasions, very breathable and comfortable.
This fashionable robe is not only a comfortable silk home wear, but also a fashion manifestation, suitable for all ages.
Soft Robes of Silk Material,Fashion Knit Robes,Breathable Soft Robes,Fur Robes,Silk Robes Yangzhou Youju E-commerce Co.,Ltd , https://www.yzxygarment.com
The initial modulus, that is, the modulus of elasticity, refers to the stress required when the fiber is stretched and stretched to 1% of the original length. Polyester filaments have a high initial modulus, civil filaments are not less than 90CN/DTEX, and industrial yarns are up to 140 CN/DTEX.
January 16, 2023