Introduce for polyester staple fiber

                                                                  Introduce for polyester staple fiber

Polyester fiber, commonly known as "polyester". PET fiber is a kind of synthetic fiber, which is made of polyester by polycondensation of organic binary acid and binary alcohol. PET fiber accounts for more than 60% of the world's synthetic fiber output.

History of polyester

In 1941, J.R. Winfield and j.t. Dixon in England first developed polyester fiber named terylene in the laboratory with terephthalic acid and glycol as raw materials. In 1953, dacron polyester fiber was produced in the United States. Then polyester fiber developed rapidly in the world. In 1960, the world production of polyester fiber exceeded that of polyacrylonitrile fiber, and in 1972, it surpassed that of polyamide fiber, becoming the largest variety of synthetic fiber.

Classification of polyester fibers

Short fiber classification: according to the fiber used for blending, long fiber can be divided into cotton type, wool type and medium long type according to the degree.

Classification of polyester long fiber:

1. Polyester full draft wire: low speed spinning and high speed drawing winding

Features: high strength, well formed filament, small size, strength, elongation unevenness, even dyeing, etc.

2. Polyester pre oriented yarn: when the speed of high-speed spinning is 3000 ~ 3600 / min, pre oriented yarn can be made.

Characteristics: high degree of pre orientation, stable properties, good mechanical properties, high uniformity, good processing performance.

What are polyester fibers? How to classify?

Classification and characteristics of polyester

Properties of polyester fiber

Glass transition temperature: 67 ℃ - 81 ℃

High strength: short fiber strength is 2.6 ~ 5.7cn/dtex, high-strength fiber is 5.6 ~ 8.0cn/dtex. Impact strength is 4 times higher than nylon, 20 times higher than viscose fiber, so polyester fabric products are quite durable.

Good elasticity: the elasticity is close to that of wool. When the elongation is 5% ~ 6%, it almost completely recovers. The crease resistance is better than other fibers, that is, the fabric is not creased and has good dimensional stability. The elastic modulus is 22 ~ 141cn / dtex, which is 2 ~ 3 times higher than that of nylon.

Good wear resistance: the wear resistance is next to the nylon with the best wear resistance, which is better than other natural fibers and synthetic fibers.

Good light resistance: next to acrylic. Its ability to resist sunlight is better than that of natural fiber fabrics.

Corrosion resistance: resistant to bleaching agent, oxidant, hydrocarbon, ketone, petroleum products and inorganic acid. Resistant to dilute alkali, not afraid of mold, but hot alkali can make it decompose.

Sex dyeing: polyester is poor in dyeing, but it is hard to fade.

Moisture absorption: the moisture absorption 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. But wearing it is stuffy and hot, easy to carry static electricity, stain dust, and affect the beauty and comfort.

Polyester knitted wicker fabric

Polyester corduroy

Synthesis of polyester fiber