The meaning of polyester is polyester. Polyester fiber is an important variety of synthetic fibers, and it is the trade name of polyester fiber in my country. Fiber made by spinning and post-processing.
The advantages are:
1. high strength. The short fiber strength is 2.6～5.7cN/dtex, and the high tenacity fiber is 5.6～8.0cN/dtex. Due to its low hygroscopicity, its wet strength and dry strength are basically the same.
2. Good flexibility. The elasticity is close to that of wool, and it can almost completely recover when it stretches 5% to 6%. The wrinkle resistance exceeds other fibers, that is, the fabric does not wrinkle and has good dimensional stability.
3. Heat-resistant polyester is made by melt spinning, and the formed fiber can be heated and melted again, which is a thermoplastic fiber. The melting point of polyester is relatively high.
4. Good thermoplasticity and poor melting resistance. Because polyester has a smooth surface and tightly arranged internal molecules, polyester is the most heat-resistant fabric among synthetic fabrics. It is thermoplastic and can be made into pleated skirts with long-lasting pleats.
5. Good abrasion resistance. The abrasion resistance is second only to nylon, which is the best in abrasion resistance, and is better than other natural fibers and synthetic fibers.
6. Good light resistance. Lightfastness is second only to acrylic fiber. The light fastness of polyester fabric is better, except that it is worse than acrylic, its light fastness is better than natural fiber fabric. Especially the light fastness behind the glass is very good, almost as good as acrylic.
7. preservative. It is resistant to bleaching agents, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. It is resistant to dilute alkali, not afraid of mildew, but hot alkali can make it decompose. It also has strong resistance to acid and alkali, and UV resistance
The disadvantages are:
1 Poor dyeability, but good color fastness, not easy to fade. Because there is no specific dyeing group on the molecular chain of polyester, and the polarity is small, it is difficult to dye, the dyeability is poor, and the dye molecules are not easy to enter the fiber.
2. Poor hygroscopicity, sultry feeling when wearing, and easy to be charged with static electricity and dirt, which affects appearance and comfort. However, it is very easy to dry after washing, and the wet strength hardly drops, does not deform, and has good wash and wear properties.
