Cotton-simulated terylene short fiber and preparation method thereof

Abstract

The invention provides a cotton-simulated terylene short fiber. Concave pits are formed on the surface of the cotton-simulated terylene short fiber; and the cotton-simulated terylene short fiber comprises 0-1 percent by weight of calcium sulphate, 1-10 percent by weight of PEG (Polyethylene Glycol) and 1-10 percent by weight of ECDP (Easy Cationic Dyeable Polyester). The invention also provides apreparation method of the cotton-simulated terylene short fiber, comprising the following steps of: slicing the PET; drying a mixture of the calcium sulphate, the ECDP and the PEG and fusing and spinning the mixture into a terylene raw filament at 270-280DEG C by using a profile spinneret; carrying out winding, doffing, balanced bundle collection, wire guiding, pre-stretching and oiling; after primary or secondary stretching, dissolving out partial calcium sulphate in the soaking process by alkali treatment to form mocropores on the surfaces of fibers; and finally carrying out tense heat setting, curling, loosed heat setting, cutting and packaging to obtain the cotton-simulated terylene short fiber. The invention solves the problems that a compound spinning process in the prior art is notonly complicated, but also has low yield and makes up the defects that the terylene has poor hydrophilicity and the textile is humid and muggy to wear.

Description

technical field

[0001] The invention relates to a cotton-like polyester staple fiber and a preparation method thereof, in particular to a cotton-like polyester staple fiber which is melt-spun by adding inorganic particles and then subjected to alkali treatment to form pits on the surface of the fiber and a preparation method thereof. Background technique

[0002] At present, the production capacity of the polyester industry has increased rapidly since the 21st century. At present, the domestic polyester production capacity exceeds 20 million tons per year, but the operating rate is very low, the price of raw materials is high, the added value of products is low, and the price of finished products is low. Ester enterprises suffer serious losses, and many have to shut down their plants. Under such circumstances, the development and production of high value-added functional polyester products, energy saving and cost reduction have become the themes of future development of many ...

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