Polyester encyclopedia

What is polyester?

Polyester is an important kind of synthetic fiber and is the commodity name of polyester fiber in China. It is based on refined terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials through esterification or transesterification and polycondensation reaction to make the fiber - polyethylene terephthalate (PET), after spinning and processing.

What are the properties of polyester?

1. High intensity. The strength of short fiber was 2.6 ~ 5.7cn/ Dtex, and that of high strength fiber was 5.6 ~ 8.0 CN/Dtex. Due to its low hygroscopicity, its wet strength and dry strength are basically the same. The impact strength is 4 times higher than that of nylon and 20 times higher than that of viscose.

2. Good flexibility. The elasticity is close to that of wool, and can be recovered almost completely when elongation is 5% ~ 6%. Wrinkle resistance than other fibers, that is, the fabric does not wrinkle, dimensional stability is good. The elastic modulus was 22 ~ 141cn/ Dtex, 2 ~ 3 times higher than that of nylon.

3. Good heat resistance.

4. Good water absorption.

5. Good wear resistance. The abrasion resistance is next to the best nylon, compared with other natural fiber and synthetic fiber are better.

6. Good light resistance. Light resistance is second only to acrylic.

7. Corrosion resistance. Resistant to bleach, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. Dilute alkali, not afraid of mold, but hot alkali can make it broken down.

8. Poor staining.

(3) What kinds of polyester?

The main types of dacron include staple fiber, stretch filament, deformation filament, decorative filament and textile