KR20170111029A - Photocatalytic fiber - Google Patents

Abstract

The present invention relates to a photocatalytic chip produced by pulverizing a synthetic resin having a chemical fiber capability having a photocatalytic function and finely pulverizing the same to an average particle size of about 300 to 500 microns and a photocatalyst having a photocatalytic function, The present invention relates to a method for manufacturing a photocatalyst yarn comprising a photocatalyst chip manufactured by the above method, and a composite resin used in the production of a photocatalytic chip or a composite resin of a different type

Description

Photocatalyst fiber {omitted}

The present invention relates to a method for producing a yarn having a photocatalytic function, and more particularly, to a method for producing a synthetic resin having a chemical fiber ability by a process of differentiating the synthetic resin in order to improve the dispersibility of the synthetic resin with the powder of the photocatalyst, A step of extruding the kneaded material into a photocatalytic chip, a step of producing a photocatalytic chip by extruding a photocatalyst chip of the same kind or a different kind of synthetic resin which is used for manufacturing a photocatalytic chip on the outer part, Thereby producing a photocatalyst raw material.

Generally, a method of producing a fiber having a photocatalytic function is to coat the yarn with a photocatalyst in a sol state or coat the fiber with a screen printing method or a gravure printing method after the fiber is circularized. Initially, it is excellent, but the function is significantly reduced by washing several times due to the reason that the binder is desorbed by washing and the photocatalyst which is kneaded like a binder is desorbed.

In the case of using a photocatalyst fiber yarn coated or immersed with a photocatalyst, there is a problem in the functionality of the photocatalytic agent, that is, the antifouling property and the antibacterial and deodorizing property, because the photocatalyst is removed by washing

That is, the function of the photocatalyst in the textile product can be expected to be effective before washing, but the effect is remarkably lowered as the number of times of washing is repeated

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a process for finely dividing a synthetic resin with a jet mill in order to improve the dispersibility of the photocatalyst with a synthetic resin having chemical fiber capability, A step of dispersing and kneading a synthetic resin and a photocatalyst, a step of producing a photocatalytic chip using an extruder, a step of using a homogenous synthetic resin or a different kind of synthetic resin for producing a photocatalytic chip and a photocatalytic chip, .

The photocatalyst source irradiated by the above method is semi-permanent because the photocatalytic agent is not removed due to washing, and the antibacterial and antifouling functions are semi-permanent.

As described above, when the photocatalyst according to the present invention is irradiated with light, active oxygen and hydroxyl radicals are generated, and strong oxidizing and reducing action causes decomposition and purification of odorous substances and antifouling with antifouling properties. It can be used not only for various products such as a bedclothes and curtain hats, but also for industrial use.

1 is a schematic diagram of a process according to an embodiment of the present invention.
Fig. 2 is an enlarged cross-sectional view of a yarn having a photocatalytic function according to the present invention
DESCRIPTION OF THE REFERENCE NUMERALS
A: Synthetic resin with chemical fiber ability
B: Synthetic resin having a chemical fiber ability containing a photocatalyst
C: Photocatalytic yarn

Hereinafter, the present invention will be described in detail

The present invention relates to a process for finely dividing a synthetic resin having a fiberizing ability into jet-mills at 300 to 500 microns, a photocatalyst having an average particle size of 50 nano and a photocatalyst weight ratio of 1 to 20 (%) and a synthetic resin weight ratio of 80 to 99 %), A photocatalytic chip manufacturing process in which a photocatalytic agent mixed in the mixing process and a synthetic resin having a chemical fiber capacity are manufactured as a photocatalytic chip by an extruder, and a photocatalytic chip manufacturing process in which the same kind of synthetic resin or different kind Wherein the photocatalytic chip is made of a core part using a synthetic resin and the photocatalytic chip has a volume ratio of 1/1 to 1/5 by using a cis-core system as a sheath part.

The photocatalyst of the present invention is represented by TiO _{2. When a} photocatalyst is irradiated with light, active oxygen and hydroxyl radicals are generated, and a strong oxidizing and reducing action is exhibited to decompose and purify odorous substances and the like . Typical photocatalysts include TiO _2. Other photocatalysts include oxides such as ZnO, RuO 2, CoO, Ce 2 O 3, Cr 2 O 3, Rh 2 O 3 and V 2 O 5, and sulfides such as ZnS and CdS.

When irradiated with ultraviolet light or visible light, it becomes an excited state and exhibits a strong oxidizing power. Synthetic resin having chemical fiber ability is a synthetic fiber made of a material chemically synthesized from petroleum as a raw material such as polyester or nylon. In the present invention, the produced photocatalyst yarn has a volume ratio of the portion including the photocatalyst and the portion not containing the photocatalyst Is 1/1 to 1/5.

result

[Deodorization and Antibacterial Test]

The antibacterial and deodorant test results for the fabrics of the above Examples and Comparative Examples are shown in the following table.

1. Test Requirements

In order to compare the effects of photocatalysis, ultraviolet rays of 1 mW / cm < 2 > were irradiated under the same conditions, and the test was conducted to observe the process.

2. Test method

* Antimicrobial effect: measured by adhesion method

- Disclosed strain: Escherichia coli

- Culture: After culturing at 25 ° C for 24 hours, measure the number of bacteria

- Specimen: 10 X 10 cm, N number = 3 pairs

* Deodorizing effect: Ammonia gas was used according to KICM-FIR-1004 test method.

Test result

Claims (6)

A second step of kneading a synthetic resin and a photocatalyst, a step of extruding the product of the second step to produce a photocatalytic chip, a third step of producing a photocatalytic chip, Wherein the photocatalyst yarn is a composite yarn of the same type of synthetic resin used in the manufacture of the photocatalytic chip or a different kind of synthetic resin as the inner part, The photocatalyst yarn is characterized in that TiO ₂ is used as the photocatalyst zero, and when the ultraviolet ray or visible ray is irradiated, the photocatalyst yarn is in an excited state and exhibits a strong oxidizing power. The photocatalyst according to claim 1 is characterized in that when irradiated with light, active oxygen and radicals (OH) are generated to decompose and purify odorous substances by a strong oxidizing and reducing action. When irradiated with ultraviolet light or visible light, A photocatalytic yarn characterized by using a photocatalyst exhibiting a strong oxidizing power. A synthetic resin having a chemical fiber ability is a synthetic fiber made of a material chemically synthesized using petroleum as a raw material such as polyester or nylon, Wherein the volume ratio of the portion of the photocatalyst yarn manufactured by the composite spinning to the portion containing the photocatalyst and the portion not containing the photocatalyst is 1/1 to 1/4. A photocatalyst yarn characterized in that a functional material for adding functions such as far-infrared rays and an antibacterial function is added in order to add functionality to the photocatalyst yarn.

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