1. High intensity. The short fiber strength is 2.6 to 5.7 cN/dtex, and the high strength fiber is 5.6 to 8.0 cN/dtex. Due to its low hygroscopicity, its wet strength is essentially the same as the dry strength. The impact strength is 4 times higher than that of nylon and 20 times higher than viscose.
2, good flexibility. The elasticity is close to that of wool, and when it is stretched by 5% to 6%, it can be almost completely recovered. The wrinkle resistance is superior to other fibers, that is, the fabric is not wrinkled, and the dimensional stability is good. The modulus of elasticity is 22 to 141 cN/dtex, which is 2 to 3 times higher than that of nylon.
3. Heat resistance and thermal stability are the best in synthetic fiber fabrics.
4. The surface of the polyester is smooth and the internal molecules are closely arranged.
5, good wear resistance. Wear resistance is second only to nylon with the best abrasion resistance, better than other natural and synthetic fibers. 6, good light resistance. Lightfastness is second only to acrylic.
7, corrosion resistance. It is resistant to bleaches, hydrocarbons, ketones, petroleum products and inorganic acids. Resistant to dilute alkali, not afraid of mildew, but hot alkali can decompose it.
8. Dyeing is poor, but the color fastness is good and it is not easy to fade. Varieties Polyester varieties include short fibers, drawn yarns, textured yarns, decorative filaments, industrial filaments, and various differential fibers.