Glass transition temperature: 67 ℃ -81 ℃
High strength: the strength of short fibers is 2.6~5.7cN/dtex, and the strength of high-strength fibers is 5.6~8.0cN/dtex. The impact resistance is 4 times higher than nylon and 20 times higher than viscose fiber, so polyester fabric products are quite strong and durable.
Good elasticity: the elasticity is close to that of wool, and when it is stretched by 5%~6%, it will recover almost completely. 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 nylon.
Good wear resistance: wear resistance is second only to nylon with the best wear resistance, better than other natural fibers and synthetic fibers.
Good light resistance: second only to acrylic. Its light fastness is better than natural fiber fabrics.
Corrosion resistance: resistant to bleaches, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. It is resistant to dilute alkali and is not afraid of mildew, but hot alkali can make it decompose.
Sexual dyeing: Polyester has poor dyeability, but it has good labor and is not easy to fade.
Hygroscopicity: The hygroscopicity is very small, the relative humidity is 100%, and the moisture absorption rate is only 0.6%~0.8%. Poor moisture absorption, easy to wash and dry quickly. However, it feels stuffy when worn, and it is easy to be charged with static electricity and stained with dust, which affects the appearance and comfort.
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