KR101938226B1 - Fiber with improved protection against chemical, biological, and radiological materials, preparation method thereof - Google Patents

Abstract

The present invention relates to a fiber having a protective function against a chemical material and a method for producing the same. (-NH ₂ ), an imine group (= NH), and a hydroxyl group (-OH), which decompose the cyanide material adsorbed on the fiber support, or a carboxyl group ≪ / RTI > and a polymer that is laminated to the fibrous support.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fiber having improved protection against a chemical substance, a method for producing the fiber,

The present invention relates to a fiber and a method for producing the fiber, and more particularly to a fiber having a protective function against a chemical material.

(GB), GD, V-O (ethyl-S- (2-diisopropylamino) ethyl methylphosphonothioate), which are known to be chemical agents that can be used in war and terrorism, (HD). ≪ / RTI > Persons at risk of contact with these CBRs should be protected from the chemical by wearing suitable protective clothing or by suitable protective materials.

Generally, protective clothing for protecting human body from gaseous CBR is made of activated carbon treated with a thin coat of latex or rubber on a polyester fiber material, . Such a protective garment has low porosity due to the use of a binder of an endothelium, resulting in low heat transmittance and heat build-up during operation, and it is difficult to discharge sweat, resulting in heat fatigue due to an increase in internal temperature during work. The thermal fatigue may be accompanied by weakness of the whole body, feeling of boredom, numbness, dizziness, nausea, and shock, thereby deteriorating the workability of a worker. In addition, activated carbon has a limited ability to adsorb and accumulates fatigue to the wearer due to its heavy weight. Furthermore, the low elasticity of activated carbon makes the protective clothing containing activated carbon less active and limited in wearing comfort.

Therefore, protective clothing that protects against chemical substances should be able to protect the human body from harmful substances and should be lightweight and stretchable. It is also required to develop a fiber having improved protection against a chemical substance which can improve the activity and workability of an operator by improving cumulative thermal fatigue. Accordingly, the present invention provides a fiber having improved protection against a chemical substance, lightweight and improved in elasticity, and a method for producing the same.

Disclosure of Invention Technical Problem [8] The present invention provides a fiber-protective fiber having a lightweight and improved breathability and a method for producing the same.

The present invention also provides a fiber having improved cracking material decomposition function and a method for producing the same.

The fiber having improved protection against the chemical material according to the present invention includes a fibrous scaffold for adsorbing a chemical material and a carboxyl group (-COOH), an amine group (-NH ₂ ), an imine group = NH) and a hydroxyl group (-OH), or a combination thereof.

In an embodiment, the fiber support comprises a functional group that is capable of hydrogen bonding with the cyanide material, and the fiber support comprises cotton, hemp, wood fibers, cotton blend fibers and nylon or combinations thereof.

In an embodiment, the polymer may adsorb moisture in the air to hydrolyze the chemical material. In addition, the polymer may decompose the chemical material by binding with the chemical material. Specifically, the polymer includes polyethyleneimine (PEI) and polyvinyl alcohol (PVA) or a mixture thereof.

The polymer may be laminated to the fibrous support in an amount of 50 to 500 parts by weight per 100 parts by weight of the fibrous support.

A method for preparing a fiber having improved protective function against a chemical material according to the present invention comprises a first step of preparing a fiber support capable of adsorbing a cyanide material and a second step of forming a carboxyl group (-COOH), an amine group (-NH ₂ ), An imine group (= NH), and a hydroxyl group (-OH), or a combination thereof.

In an embodiment, the fiber support comprises a functional group that is capable of hydrogen bonding with the cyanide material, and in particular the fiber support may comprise cotton, hemp, wood fibers, cotton blend fibers and nylon or combinations thereof.

In an embodiment, the polymer may adsorb moisture in the air to hydrolyze the chemical material. The polymer may decompose the chemical material by binding with the chemical material. The polymer may include polyethyleneimine (PEI) and polyvinyl alcohol (PVA) or a mixture thereof.

The polymer may be electrospun laminated to the fibrous support at 50 to 500 parts by weight per 100 parts by weight of the fibrous support.

The fiber according to the present invention can be made lighter by laminating a polymer capable of decomposing a cyanide material to a fibrous support that adsorbs a cyanide material, and the air permeability can be improved.

In addition, by introducing a polymer capable of decomposing a cyanide material into a fiber support that adsorbs the cyanide material, the decomposition function of the cyanide material can be improved.

1 is a schematic view of a manufacturing method of an embodiment of the present invention.
2 is a schematic diagram of an analysis method of an experimental example of the present invention.
FIG. 3 is a graph showing decomposition efficiency of a chemical substance of an embodiment of the present invention and a comparative example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, the fiber and the manufacturing method according to the present invention will be described in detail.

 The present invention provides a fiber and a manufacturing method which can laminate a light and highly reactive polymer on a fiber support through electrospinning to maintain the light weight and air permeability of the fiber support and to greatly enhance the protection against toxic chemical and biological materials. The fibers can be applied to various applications such as protective clothing for civilian industries as well as equipment for protecting chemical materials.

To this end, the fiber according to an embodiment of the present invention includes a fibrous scaffold for adsorbing a cyanide material and a carboxyl group (-COOH), an amine group (-NH ₂ ), an imine group (= NH) and a hydroxyl group (-OH), or a combination thereof, and having a protective function against a chemical material containing a polymer laminated on the fiber support.

Hereinafter, each configuration will be described in detail. The fibrous support may be a cellulose-based fiber and may include a functional group capable of hydrogen bonding with the cyanogen material. In particular, the fiber support may comprise cotton, hemp, wood fibers, cotton blend fibers and nylon or combinations thereof, wherein a number of hydroxyl groups (-OH) are present in these fiber supports.

In one embodiment, the hydroxyl groups of cellulose and the cyanogen (GD) materials may be hydrogen bonded as shown in Formula 1. This can increase the retention time of the chemical material.

In addition, by using cellulose-based fibers as the fiber support, the fiber of the present invention can be easily cut or sewn using the fibers to increase the utilization of the fibers to make protective clothing or protective equipment.

The polymer may be prepared by dissolving the chemical material GD in the form of a chemical formula 2 or chemical formula 3 with a carboxyl group (-COOH), an amine group (-NH ₂ ), an imine group (= NH) .

In addition, the polymer may adsorb water in the air with a carboxyl group (-COOH), an amine group (-NH ₂ ), an imine group (= NH) and a hydroxyl group (-OH) Can be hydrolyzed as shown in Formula (4).

As a specific example, the polymer may include polyethylenimine (PEI) rich in amine groups and polyvinyl alcohol (PVA) rich in hydroxyl groups or a mixture thereof.

 The polymer may also be laminated to the fibrous support at 50 to 500 parts by weight per 100 parts by weight of the fibrous support. When the polymer is less than 50 parts by weight per 100 parts by weight of the fibrous support, decomposition of the cracked material due to the polymer may be insignificant.

On the other hand, when the polymer exceeds 500 parts by weight per 100 parts by weight of the fibrous support, the polymer overcovers the fibrous support, thereby preventing contact between the fibrous support and the chemical-resistant material. The contact between the fibrous scaffold and the CBR is prevented and the probability that the fibrous scaffold will adsorb the CBR will be reduced. Thus, the CBR can not effectively protect the human body from degradation, and the decomposition ability of the CBR can be lowered. In addition, when the weight of the polymer is increased to protect and protect the chemical material from the fibers of the present invention, the activity may be lowered.

That is, the fiber according to the present invention improves the protecting function and decomposition function of the fiber to the toxic chemical material by acting on the chemical material simultaneously with the fiber support capable of adsorbing the chemical material and the polymer capable of decomposing the chemical material. .

Meanwhile, the method for producing a fiber of the present invention includes a first step of preparing a fibrous support capable of adsorbing a cyanide material and a second step of forming a carboxyl group (-COOH), an amine group (-NH ₂ ), an imine group ) And a hydroxyl group (-OH), or a combination thereof. By laminating the polymer on the fibrous support by electrospinning, the fibrous support that can adsorb the cyanide material and the polymer capable of decomposing the cyanide material can act on the cyanide material at the same time do.

In detail, the fibrous support may include cotton, hemp, cotton fiber, cotton blend fiber and nylon or a combination thereof, characterized by comprising a functional group capable of hydrogen bonding with the cyanogen material.

In addition, the polymer may adsorb moisture in the air and decompose the chemical material to hydrolyze the chemical material. The polymer may include polyethylenimine (PEI) rich in amine groups and polyvinyl alcohol (PVA) rich in hydroxyl groups or a mixture thereof.

Also, by electrospinning, the polymer may be laminated to the fiber support at 50 to 500 parts by weight per 100 parts by weight of the fiber support.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. However, the scope and contents of the present invention are not construed to be limited or limited by the following Examples and Experimental Examples.

Example:

Referring to FIG. 1, a cotton fiber (fiber support) is wrapped around a drum collector which is rotatable and can fabricate a vertically wide fabric by electrospinning, and the polyethyleneimine (polymer) of the present invention is dissolved or dispersed in an electrospinning apparatus. Dispersed to prepare a polymer mixture liquid and injected into a syringe of an electrospinning machine. Next, a high voltage of 5 kV or more is applied to the electrospinning device to overcome the surface tension of the polymer mixture. That is, at this time, the polymer mixture solution is discharged through the needle of the electrospinning device and laminated on the cotton fiber. In this process, fibers with improved protection against chemical substances are produced.

Experimental Example:

Referring to FIG. 2, fibers prepared in the above-described embodiment are filled with 20 mg of the middle of a glass tube, and both ends of the glass tube are supported with glass fibers. Next, air or helium is injected into one end of the glass tube at a flow rate of 30 to 50 ml / min, and a chemical gas (GD) is injected into the glass wool in the direction of air or helium injection, So that the gas that has passed through the fibers is released. A gas chromatograph / mass spectrometer (GC / MS) was connected in-situ to the inlet of the glass tube from which the gas was emitted to analyze the components of the gas released, . The decomposition products of the above-mentioned CBR and CBR are analyzed qualitatively and quantitatively.

In the same manner as in the above-mentioned method, the samples of the surface fibers, the non-chemically functionalized polymers, the polyethyleneimine and the cotton fibers of Table 1 were subjected to electrospinning (examples). The results are shown in FIG.

Referring to FIG. 3, sample Nos. 1 and 3, which are samples irradiated with an amine-rich polyethyleneimine without a fiber support and a fiber support, can decompose the chemical decomposition (GD) into less than 50% 4 shows that the fiber support adsorbs the CBR material and the electrospun polymer directly decomposes the CBR material or supplies moisture to the CBR material to decompose the CBR material so that it has a decomposition efficiency of 80% or more.

Sample number Fiber support Electrospun Polymer One Cotton fiber none 2 none Non-chemical polymer 3 none Polyethyleneimine 4 Cotton fiber Polyethyleneimine

It will be apparent to those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

In addition, the above detailed description should not be construed in all aspects as limiting and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (14)

A fibrous support that adsorbs the CBR material; And
And a polymer laminated on said fiber support,
Preferably,
And is formed of an electrospun material,
(-COOH), an amine group (-NH2), an imine group (= NH) and a hydroxyl group (-OH) or a combination thereof decomposing the above-mentioned chemical material adsorbed on the fiber support,
Wherein the fiber support is laminated so as to cover a part of the fiber support and is formed such that the fiber support and the polymer are simultaneously decomposed by the fiber support. The method according to claim 1,
Wherein the fibrous support comprises a functional group capable of hydrogen bonding with the cyanide material. 3. The method of claim 2,
Wherein the fiber support comprises cotton, hemp, wood fibers, cotton blend fibers and nylon or a combination thereof. The method according to claim 1,
Wherein the polymer adsorbs moisture in the air to hydrolyze the chemical material. 5. The method of claim 4,
Wherein the polymer degrades the chemical material. ≪ RTI ID = 0.0 > 15. < / RTI > 5. The method of claim 4,
Characterized in that the polymer comprises polyethyleneimine (PEI) and polyvinyl alcohol (PVA) or a mixture thereof. The method according to claim 1,
Wherein the polymer is laminated on the fiber support in an amount of 50 to 500 parts by weight per 100 parts by weight of the fiber support. A first step of preparing a fiber support capable of adsorbing a chemical material; And
A second step of electrospinning and laminating a polymer having a functional group containing a carboxyl group (-COOH), an amine group (-NH ₂ ), an imine group (= NH) and a hydroxyl group (-OH) Lt; / RTI >
Wherein the polymer is laminated so as to cover a part of the fibrous support and is formed such that the CFB is decomposed simultaneously by the fibrous support and the polymer. Way. 9. The method of claim 8,
Wherein the fibrous support comprises a functional group capable of hydrogen bonding with the cyanide material. 9. The method of claim 8,
Wherein the fiber support comprises cotton, hemp, wood fiber, cotton blend fiber and nylon or a combination thereof. 9. The method of claim 8,
Wherein the polymer adsorbs moisture in the air to hydrolyze the chemical material. ≪ RTI ID = 0.0 > 15. < / RTI > 12. The method of claim 11,
Wherein the polymer degrades the chemical material. ≪ RTI ID = 0.0 > 11. < / RTI > 12. The method of claim 11,
Wherein the polymer comprises polyethyleneimine (PEI), polyvinyl alcohol (PVA), or a mixture thereof. ≪ Desc / Clms Page number 20 > 9. The method of claim 8,
Wherein the polymer is laminated on the fiber support in an amount of 50 to 500 parts by weight per 100 parts by weight of the fiber support.

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