A kind of four-leaf-shaped sheath-core structure negative oxygen ion polyester fiber and preparation method thereof

Abstract

The invention belongs to the technical field of functional fibers, and relates to a polyester fiber with a four-leaf-shaped sheath-core structure capable of continuously releasing negative oxygen ions and a preparation method thereof. The composite fiber is composed of modified polyester / functional additive skin layer and polyester core layer. The mass ratio of the skin layer to the core layer is 1:1 to 1:4; the modified polyester in the skin layer is polyethylene 2,5-dihydroxy terephthalate resin or polyethylene 2-hydroxy terephthalate Resin and functional additives are natural mineral powders that are non-radioactive and have obvious anion-generating effects, including but not limited to tourmaline, serpentine, and rare earth minerals. Spinning through a special-shaped spinneret with a four-leaf skin-core structure to obtain polyester fibers with a four-leaf skin-core structure. The prepared fiber material has good compatibility with the core layer because the skin layer is modified polyester, so the fiber uniformity is good. In addition, the functional additives are all located in the skin layer with a large specific surface area, which can fully contact with the air and release negative ions stably. The fiber can be used in body clothing fabrics or interior textiles.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a four-leaf sheath-core structure anion polyester fiber and a preparation method thereof. Background technique [0002] People will feel dizzy if they stay in a closed room in the city for a long time. When they come to forests, seasides, waterfalls and other places, people will feel refreshed. This is the effect of negative air ions. Negative air ions, also called negative oxygen ions, refer to oxygen ions that gain excess electrons and are negatively charged. It is formed when oxygen molecules in the air combine with free electrons. Natural discharge (lightning) phenomena, fountains, waterfalls, etc. can ionize the surrounding air and form negative oxygen ions. Negative oxygen ions enjoy the reputation of "Vitamin Oxygen", "Air Vitamin", "Longevity Supplement" and "Air Vitamin" in the medical field. [0003] At present, more than 900 million people in my country are affecte...

AI Technical Summary

Problems solved by technology

However, since the functional additives need to be in contact with the air to ionize the water and oxygen molecules in the air and convert them into negative oxygen ions, the defect of this method is that the fibers spun by this method can only be located in the fibers. The functional additives on the surface that can be in contact with the air can generate negative oxygen ions, and the amount of additives located on the surface of the fiber is very small compared with the total amount of functional additives added to the fiber, and most of the functional additives are located inside the fiber Enclosed by polymers, unable to contact air and generate negative oxygen ions

However, the problem with this method is that the melting point and rheological properties of PA6 and PET are quite different, which makes the spinning process more difficult, and it also fails to solve the production efficiency caused by the increase in spinning ends caused by the agglomeration of inorganic powder. reduce the problem

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