1. High strength and toughness. The strength of short fiber is 2.6~5.7cN/dtex, and the strength of high tenacity fiber is 5.6~8.0cN/dtex. Due to its lower hygroscopicity, the wet strength of recycled polyester is basically the same as the dry strength. The impact strength is 4 times higher than that of nylon and 20 times higher than that of viscose fiber.
2. Good light resistance. Lightfastness is second only to acrylic. The light fastness of recycled polyester fabric is better than that of acrylic fiber, and its light fastness is better than that of natural fiber fabric. Especially the light fastness behind the glass is very good, almost on par with acrylic.
3. Recycled polyester has good elasticity. The elasticity is close to that of wool, and it can almost fully recover when it is stretched by 5% to 6%. The wrinkle resistance exceeds other fibers, that is, the fabric does not wrinkle and has good dimensional stability. The elastic modulus is 22~141cN/dtex, which is 2~3 times higher than that of nylon. Recycled polyester fabric has high strength and elastic recovery, so it is durable, wrinkle-resistant and easy to iron.
4. Poor dyeability, but good color fastness, not easy to fade. Because there is no specific dyeing group on the molecular chain of recycled polyester, and the polarity is small, it is difficult to dye, and the dyeability is poor, and the dye molecules are not easy to enter the fiber.
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