high strength. Short fiber strength 2.6 ~ 5.7cN / dtex, high strength fiber 5.6 ~ 8.0cN / dtex. Because of its low hygroscopicity, its wet strength and dry strength are basically the same. High impact strength 4 times higher than nylon, viscose fiber 20 times higher.
2. Good elasticity. Elastic close to the wool, when the elongation of 5% to 6%, almost completely restored. Wrinkle resistance than other fibers, the fabric does not wrinkle, good dimensional stability. Elastic modulus of 22 ~ 141cN / dtex, 2 to 3 times higher than nylon. Polyester fabric has high strength and resilience, so it is durable, anti-wrinkle and anti-scald. 3. Heat-resistant polyester is made by melt-spinning method, felt-forming fibers can be heated again after melting, are thermoplastic fibers. Polyester melting point is relatively high, and specific heat capacity and thermal conductivity are small,
Therefore, polyester fiber heat resistance and insulation to be higher.