1. High toughness. 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 basically the same as its dry strength. The impact strength is 4 times higher than nylon and 20 times higher than viscose fiber.
2. Good flexibility. The elasticity is close to wool, and it can be almost completely recovered when it is stretched by 5% to 6%. The wrinkle resistance is better than other fibers, that is, the fabric is not wrinkled, and the dimensional stability is good. The polyester fabric has high strength and elastic recovery ability. Therefore, it is durable, wrinkle-resistant and iron-free.
3. Heat-resistant polyester is made by melt spinning method, and the formed fiber can be heated and melted again, which belongs to thermoplastic fiber. The melting point of polyester is relatively high, while the specific heat capacity and thermal conductivity are small, so the heat resistance and heat insulation of polyester fiber are higher. It is the best among synthetic fibers.
4. Good thermoplasticity and poor resistance to melting. Due to the smooth surface of polyester and the close arrangement of internal molecules, polyester is the most heat-resistant fabric in synthetic fiber fabrics. It has thermoplasticity and can be made into a pleated skirt with long-lasting pleats. At the same time, the polyester fabric has poor melting resistance, and it is easy to form holes in the case of soot, sparks, etc. Therefore, you should try to avoid contact with cigarette butts and sparks.
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