REACTIVE FIBERS, METHOD OF MANUFACTURING THE SAME, AND OUTER SHELL OF CHEMICAL, BIOLOGICAL AND RADIOLOGICAL PROTECTIVE CLOTHING INCLUDING THE SAME

Abstract

A reactive fiber, a method of manufacturing the reactive fiber, and an outer shell of chemical, biological and radiological (CBR) protective clothing including the reactive fiber are provided. The reactive fiber includes a fiber, a plurality of reactive projections formed on a surface of the fiber, and a plurality of hydrophobic projections formed on the fiber and surfaces of the reactive projections.

Claims

1. A reactive fiber comprising: a fiber; a plurality of reactive projections formed on a surface of the fiber; and a plurality of hydrophobic projections formed on the fiber and surfaces of the reactive projections.

2. The reactive fiber of claim 1, wherein each of the reactive projections has a diameter of 100 nanometers (nm) to 100 micrometers (m).

3. The reactive fiber of claim 1, wherein a distance between the reactive projections is in a range of 10 nm to 10 m.

4. The reactive fiber of claim 1, wherein each of the hydrophobic projections has a diameter of 5 nm to 10 m.

5. The reactive fiber of claim 1, wherein the fiber comprises at least one selected from the group consisting of cotton, polyester, polyethylene terephthalate and rayon.

6. The reactive fiber of claim 1, wherein the reactive projections have decomposition reactivity of at least one selected from the group consisting of a nerve agent, a blister agent, an industrial toxic substance and a toxic gas.

7. The reactive fiber of claim 1, wherein each of the reactive projections comprises at least one selected from the group consisting of a metal oxide, a metal hydroxide and a metal-organic complex.

8. The reactive fiber of claim 1, wherein each of the reactive projections comprises at least one selected from the group consisting of Zr(OH).sub.4, ZrO, MOF-808, UiO-66-NH.sub.2, TiO.sub.2 and Mg(OH).sub.2.

9. The reactive fiber of claim 1, wherein each of the hydrophobic projections comprises an organic compound, an inorganic compound or an organic/inorganic to composite compound which has hydrophobicity.

10. The reactive fiber of claim 1, wherein each of the hydrophobic projections comprises at least one selected from the group consisting of polystyrene (PS), polyhedral oligomeric silsesquioxane (FOSS), a compound including Si or Al particles to which a hydrocarbon or alkyl group is attached, and Si or Al particles to which fluorocarbon (C6 or less) is attached.

11. A method of manufacturing a reactive fiber, the method comprising: rendering a surface of a fiber to be hydrophilic by treating the fiber with a basic solution; forming a reactive projection on the surface of the fiber by dipping the fiber treated with the basic solution into a solution containing a precursor of a reactive particle; and coating the surface of the fiber on which the reactive projection is formed with a hydrophobic material, and treating the fiber with a hydrophilic solvent.

12. The method of claim 11, wherein the rendering of the surface of the fiber to be hydrophilic is performed for a period of 0.5 hours to 4 hours.

13. The method of claim 11, wherein the basic solution comprises at least one selected from the group consisting of KOH, NaOH and Mg(OH).sub.2.

14. The method of claim 11, wherein the forming of the reactive projection on the surface of the fiber is performed for a period of 0.5 hours to 24 hours.

15. The method of claim 11, wherein the precursor of the reactive particle comprises at least one selected from the group consisting of zirconium oxychloride, titanium chloride and magnesium chloride.

16. The method of claim 11, wherein the hydrophobic material comprises at least one selected from the group consisting of polystyrene (PS), polyhedral oligomeric silsesquioxane (POSS), a compound including Si or Al particles to which a hydrocarbon or alkyl group is attached, and Si or Al particles to which fluorocarbon (C6 or less) is attached.

17. The method of claim 11, wherein the hydrophilic solvent comprises at least one selected from the group consisting of water and ethanol.

18. An outer shell of chemical, biological and radiological (CBR) protective clothing, the outer shell being woven from the reactive fiber of claim 1.

19. Chemical, biological and radiological (CBR) protective clothing comprising the outer shell of claim 18.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] These and/or other aspects, features, and advantages of the invention will become apparent and more readily appreciated from the following description of example embodiments, taken in conjunction with the accompanying drawings of which:

[0031] FIG. 1 is a diagram illustrating a reactive fiber according to an example embodiment;

[0032] FIG. 2 is a scanning electron microscope (SEM) image of a surface of a reactive fiber manufactured according to an example embodiment; and

[0033] FIG. 3 illustrates images obtained by measuring contact angle properties of a reactive fiber manufactured according to an example embodiment.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0034] Hereinafter, example embodiments will be described in detail with reference to the accompanying drawings. When it is determined detailed description related to a related known function or configuration they may make the purpose of the present disclosure unnecessarily ambiguous in describing the present disclosure, the detailed description will be omitted here. Also, terminologies used herein are defined to appropriately describe the example embodiments of the present disclosure and thus may be changed depending on a user, the intent of an operator, or a custom of a field to which the present disclosure pertains. Accordingly, the terminologies must be defined based on the following overall description of the present specification. The same reference numerals as shown in each drawing represent same elements.

[0035] Throughout the specification, when any element is positioned on the other element, this not only includes a case that the any element is brought into contact with the other element, but also includes a case that another element exists between two elements.

[0036] Throughout the specification, if a prescribed part includes a prescribed element, this means that another element can be further included instead of excluding other elements unless any particularly opposite description exists.

[0037] Hereinafter, a reactive fiber, a method of preparing the reactive fiber, and an outer shell of chemical, biological and radiological (CBR) protective clothing including the reactive fiber will be described in detail with reference to example embodiments and drawings. However, the present disclosure is not limited to the example embodiments and drawings.

[0038] FIG. 1 is a diagram illustrating a reactive fiber according to an example embodiment. Hereinafter, the present disclosure is described with reference to FIG. 1.

[0039] The reactive fiber may include a fiber, a plurality of reactive projections formed on a surface of the fiber, and a plurality of hydrophobic projections formed on the fiber and surfaces of the reactive projections.

[0040] The reactive fiber may include a reactive projection including particles reactive to toxic CBR materials, and a hydrophobic projection including organic, inorganic and organic-inorganic hybrid materials that exhibit hydrophobicity, thereby realizing a reactive fiber with an enhanced protection performance against water and oil while maintaining a protection performance against a chemical agent.

[0041] The reactive projection may have a diameter of 100 nanometers (nm) to 100 micrometers (m). When the diameter of the reactive projection exceeds 100 m, a reactivity may decrease. When the diameter of the reactive projection is less than 100 nm, reactive particles may clump together.

[0042] A distance, that is, a pitch between the plurality of reactive projections may be in a range of 10 nm to 10 m. When the distance exceeds 10 m, reactivity may decrease. When the distance is less than 10 nm, an insufficient surface structure effect may appear due to a gap between projections.

[0043] The hydrophobic projection may have a diameter of 5 nm to 10 m. When the diameter of the hydrophobic projection exceeds 10 m, a reaction effect of the reactive projection may be lowered. When the diameter of the hydrophobic projection is less than 5 nm, a surface treatment effect by the hydrophobic projection may be insufficient.

[0044] The fiber may include at least one selected from a group consisting of cotton, polyester, polyethylene terephthalate and rayon. Desirably, the fiber may be a cotton fiber or a cotton blend that occupies a large portion of an outer shell of CBR protective clothing.

[0045] The reactive projection may have decomposition reactivity of at least one selected from the group consisting of a neuro agent, a blister agent, an industrial toxic substance and a toxic gas. The reactive fiber may have an excellent protection performance against a chemical agent, and may decompose at least one selected from the group consisting of an industrial toxic substance and a toxic gas.

[0046] The reactive projection may include at least one selected from the group consisting of a metal oxide, a metal hydroxide and a metal-organic complex. Micro/nano reactive projections including reactive particles may be, in particular, zirconium-based oxide, hydroxide or metal-organic complex. The reactive fiber may include the reactive projections, thereby implementing a protection performance against a liquid chemical agent.

[0047] The reactive projection may include at least one selected from the group consisting of Zr(OH).sub.4, ZrO, MOF-808, UiO-66-NH.sub.2, TiO.sub.2 and Mg(OH).sub.2.

[0048] The hydrophobic projection may include an organic compound, an inorganic compound or an organic/inorganic composite compound which has hydrophobicity. A hydrophobic projection with hydrophobic properties may enhance wettability of a fiber surface to water and oil, and may increase a protection performance of the outer shell of CBR protective clothing against water, oil and a toxic chemical agent through a synergistic effect of composite projections with micro/nano structures.

[0049] The hydrophobic projection may include at least one selected from the group consisting of polystyrene (PS), polyhedral oligomeric silsesquioxane (POSS), a compound including Si or Al particles to which a hydrocarbon or alkyl group is attached, and Si or Al particles to which fluorocarbon (C6 or less) is attached. A material with hydrophobic properties may typically include, for example, a PS-based compound, POSS, or Si or Al particles to which a hydrocarbon or alkyl group is attached.

[0050] According to an example embodiment, a method of manufacturing a reactive fiber includes rendering a surface of a fiber to be hydrophilic by treating the fiber with a basic solution, forming a reactive projection on the surface of the fiber by dipping the fiber treated with the basic solution into a solution containing a precursor of a reactive particle, and coating the surface of the fiber on which the reactive projection is formed with a hydrophobic material, and treating the fiber with a hydrophilic solvent.

[0051] Particles reactive to toxic chemical materials may be grown to be micro/nano-scale reactive projection, and a surface of the reactive projection may be coated with organic, inorganic and organic-inorganic hybrid materials having hydrophobicity, to manufacture a reactive fiber with an enhanced protective performance against water and oil while maintaining a protective performance against a chemical agent.

[0052] The rendering of the surface of the fiber to be hydrophilic may be performed for a period of 0.5 hours to 4 hours.

[0053] The basic solution may include at least one selected from the group consisting of NaOH, KOH and Mg(OH).sub.2.

[0054] The surface of the fiber may be rendered to be a hydrophilic surface by treating the fiber with the basic solution for a predetermined period of time. Desirably, a cotton fiber may be treated with a KOH solution for a period of 0.5 hours to 4 hours to render a surface of the cotton fiber to be hydrophilic.

[0055] The forming of the reactive projection on the surface of the fiber may be performed for a period of 0.5 hours to 24 hours.

[0056] The precursor of the reactive particle may include at least one selected from the group consisting of zirconium oxychloride, titanium chloride and magnesium chloride.

[0057] When the fiber treated through a step of rendering the surface of the fiber to be hydrophilic is dipped into the solution containing the precursor of the reactive particle, a projection may be formed over time. Zirconium oxychloride and 2-amino-terphtalic acid may desirably be used as the precursor. Next, a step of removing impurities through cleaning, and performing vacuum drying may be performed. Desirably, the above process may be repeatedly performed two or three times.

[0058] The hydrophobic material may include at least one selected from the group consisting of PS, POSS, a compound including Si or Al particles to which a hydrocarbon or alkyl group is attached, and Si or Al particles to which fluorocarbon (C6 or less) is attached. The hydrophilic solvent may include at least one selected from the group consisting of water and ethanol.

[0059] When a surface of a cotton fiber on which a reactive projection is formed through the process is dip-coated with a hydrophobic material (for example, PS or POSS) and is treated again with a hydrophilic solvent, a hydrophobic projection may be formed on a surface of a reactive complex projection.

[0060] According to an example embodiment, an outer shell of CBR protective clothing may be woven from the above-described reactive fiber or a reactive fiber that is manufactured by the above-described method.

[0061] According to an example embodiment, CBR protective clothing may include the outer shell of the CBR protective clothing.

[0062] Hereinafter, the present disclosure will be described in more detail with reference to an example and a comparative example.

[0063] However, the following example is given for the purpose of illustrating the present disclosure, and the present disclosure is not limited to the following example.

[0064] As the example, a zirconium-based metal-organic complex was grown in a form of a micro/nano projection on a surface of a cotton fiber (100% cotton, high density 60 s), and a surface of a zirconium-based complex projection was treated with hydrophobic POSS materials to have hydrophobicity. Water drops were dropped based on fiber surface properties, to measure each contact angle property.

[0065] FIG. 2 is a scanning electron microscope (SEM) image of a surface of a reactive fiber manufactured according to an example embodiment.

[0066] Referring to FIG. 2, it may be found that reactive projections and hydrophobic projections are formed on surfaces of fibers.

[0067] FIG. 3 illustrates images obtained by measuring contact angle properties of a reactive fiber manufactured according to an example embodiment.

[0068] Referring to FIG. 3, it may be found that wettability of a surface of a fiber on which only a reactive projection is formed is not improved, and that wettability of a surface of a fiber on which a reactive projection and a hydrophobic projection are formed concurrently is enhanced while implementing a protection performance against a chemical agent.

[0069] According to example embodiments, a reactive fiber includes a reactive projection to implement a protection performance against a liquid chemical agent, and a hydrophobic projection with hydrophobic properties may enhance wettability of a surface of a fiber against water and oil, and accordingly it is possible to increase a protection performance of an outer shell of CBR protective clothing against water, oil and a toxic chemical agent through a synergistic effect of composite projections with micro/nano structures. Thus, non-toxic, low-cost and lightweight materials may be used, thereby securing an effect equal to or greater than that of the existing fluorocarbon-based coating treatment with a minimum cost. Also, the above materials may be used for various purposes, for example, for protective clothing for private industries as well as CBR protective equipment.

[0070] While a few example embodiments have been shown and described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications and variations can be made from the foregoing descriptions. For example, adequate effects may be achieved even if the foregoing processes and methods are carried out in different order than described above, and/or the aforementioned elements are combined or coupled in different forms and modes than as described above or be substituted or switched with other components or equivalents. Thus, other implementations, alternative embodiments and equivalents to the claimed subject matter are construed as being within the appended claims.