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Negative oxygen ion polyester fiber with four-leaf-shaped skin-core structure and preparation method thereof

A technology of negative oxygen ion fiber and skin-core structure, which is applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc. Reduce problems such as reducing melting point and rheological properties, simplifying the skin-core spinning process, and reducing production efficiency.

Active Publication Date: 2021-01-05
江苏家来福纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Negative oxygen ion polyester fiber with four-leaf-shaped skin-core structure and preparation method thereof
  • Negative oxygen ion polyester fiber with four-leaf-shaped skin-core structure and preparation method thereof
  • Negative oxygen ion polyester fiber with four-leaf-shaped skin-core structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 116.2 kilograms of terephthalic acid (700 moles), 59.4 kilograms of 2,5-dihydroxyterephthalic acid (300 moles), 62 kilograms of ethylene glycol (1000 moles), 83 grams of catalyst antimony trioxide, Put 830 grams of matting agent titanium dioxide and 8 kilograms of tourmaline powder (average pore size 120nm) into the polymerization reactor, first heat up to 100°C under normal pressure and stir for 1 hour, then continue to heat up to 250°C to react and vacuumize, observe the water outlet situation, 4 After one hour, the esterification rate reached 91%. Continue to maintain a high vacuum and raise the temperature to 290°C for 5 hours to react. When the melt viscosity reaches 0.51, the reaction is terminated, cooled and cut into pellets, and the modified polyester masterbatch, namely 2,5-di Hydroxyethylene terephthalate-ethylene terephthalate copolymer polyester masterbatch. In the copolyester, the mole fraction m:n of ethylene terephthalate:2,5-dihydroxyethylene terephthal...

Embodiment 2

[0059] The relative addition amount of 2,5-dihydroxyterephthalic acid and terephthalic acid in Example 1 was changed, and the other operating steps were the same as in Example 1. The quantities of reactants are: 99.6 kg of terephthalic acid (600 moles), 79.2 kg of 2,5-dihydroxyterephthalic acid (300 moles), 62 kg of ethylene glycol (1000 moles), 83 grams of catalyst Antimony trioxide, 830 grams of matting agent titanium dioxide, 12 kilograms of tourmaline powder (average pore size 120nm).

[0060] The four-leaf sheath-core structure anion composite fiber obtained by spinning has an anion release capacity of 6000 / cm 3 .

Embodiment 3

[0062] The 2,5-dihydroxyterephthalic acid in Example 1 was changed to 2-hydroxyterephthalic acid, and the amount of reactants was changed accordingly. The quantities of reactants are: 116.2 kg of terephthalic acid (700 moles), 54.6 kg of 2,5-dihydroxyterephthalic acid (300 moles), 62 kg of ethylene glycol (1000 moles), 83 grams of catalyst Antimony trioxide, 830 grams of matting agent titanium dioxide, 8 kilograms of tourmaline powder (average pore size 120nm). Put the above materials into the polymerization reactor, first raise the temperature to 100°C under normal pressure and stir for 1 hour, then continue to raise the temperature to 250°C to react and vacuumize, observe the water outlet, when the esterification rate reaches 96%, continue to maintain high vacuum And raise the temperature to 285 ℃ for 5 hours, after the melt viscosity reaches 0.54, stop the reaction, cool and cut into pellets, and obtain the modified polyester copolymer masterbatch, that is, 2-hydroxyethylen...

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Abstract

The invention belongs to the technical field of functional fibers, and relates to a negative oxygen ion polyester fiber with a four-leaf-shaped skin-core structure and a preparation method thereof. The composite fiber is composed of a modified polyester / functional additive skin layer and a polyester core layer, wherein the mass ratio of the skin layer to the core layer is 1:1-1:4; and modified polyester in the skin layer is poly(2,5-dihydroxy ethylene terephthalate) resin or poly (2-hydroxy ethylene terephthalate) resin, and functional additives are non-radioactive natural mineral powder withan obvious negative ion generation effect and include but not limited to tourmaline, serpentine and rare earth minerals. Spinning is carried out through a four-leaf skin-core structure special-shapedspinneret plate to obtain the polyester fiber with the four-leaf skin-core structure. The prepared fiber material is good in fiber uniformity due to the fact that the skin layer is the modified polyester and is good in compatibility with the core layer; and in addition, the functional additives are all located on the skin layer with the large specific surface area and can make full contact with air to stably release negative ions. The fiber can be used for human body clothing fabrics or indoor 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F1/10C08G63/183C08G63/60C08G63/78D01D5/34
CPCD01F8/14D01F1/10D01D5/34C08G63/60C08G63/183C08G63/78
Inventor 滕召部腾雨君
Owner 江苏家来福纺织有限公司
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