KR20140023692A - Method for manufacturing chemical biological and radiological protective clothing sheet - Google Patents

Abstract

The present invention relates to method for manufacturing fabric for chemical, biological, and radiological protective clothing. The method includes a step of forming a web from electrospun fibers, a step of introducing an inorganic material which adsorbs a toxic substance to the fiber of the web through a non-binding method, and a step of bonding the web to which inorganic material is introduced to a shell layer.

Description

METHOD FOR MANUFACTURING CHEMICAL BIOLOGICAL AND RADIOLOGICAL PROTECTIVE CLOTHING SHEET [0002]

Disclosure relates generally to a method for fabricating a fabric for CBR protection, and more particularly, to fabricating a fabric for CBR protection applying a web-like layer formed from nanofibers so as to have moisture-permeability using a material having chemical resistance ≪ / RTI >

Herein, the background art relating to the present disclosure is provided, and these are not necessarily meant to be known arts.

As the development and ownership of weapons of mass destruction (WMD) has increased in modern warfare, products that can protect human bodies and equipment are required. Among the weapons of mass destruction, chemical weapons are inexpensive to manufacture, and can be mass-produced in a short period of time with a small-sized manufacturing facility, are relatively easy to handle and are highly threatened.

Accordingly, various protective equipment for protecting the human body such as a CBR protective clothing and a gas mask are required. The types of NBC protective clothing can be divided into breathable protective clothing and non-protective protective clothing. In the case of a non-inflatable protective suit, it is a protective suit that blocks external gases from entering and exiting. It has a fatal disadvantage that it is difficult to release the water vapor and heat released from the body to the outside although it is excellent in protection against chemical agents. On the other hand, the breathable protective garment has a certain degree of gas entry and exit, unlike the open-ended protective clothing, and since the vapor-phase toxic chemical agent is considered to have a direct effect on the human body, the activated carbon containing the activated carbon capable of adsorbing and filtering the vapor- It adopts a double structure which is made by applying a fabric and a fabric with camouflage performance on it.

When a toxic chemical agent is exploded, it first splashes in liquid phase and volatilizes into vapor phase depending on climatic conditions and pollutes the environment. In addition, when a chemical agent is sprayed on an unmanned airplane, it falls down to the ground in a particle size of about 5 to 10 μm, that is, in an aerosol phase. In some cases, the chemical agent completely covers the region in the mist.

Of course, after a certain period of time, the particulate matter is volatilized and appears as a vapor phase, but the vapor phase is only 2 to 12 hours long. Therefore, the chemical protective clothing of the CBR should not only be a vapor phase or liquid chemical agent but also an aerosol or mist type chemical agent The protection performance should also be given.

Breathable protective clothing protects the human body from gaseous chemical agents, protects the endothelium by using a cloth with a latex rubber or the like thinly coated on a polyester-based fiber material, etc., and protects the liquid and solid chemical agent primarily The outer surface of the inner skin is coated with activated carbon to absorb and remove the chemical agent. The porosity of the inner skin is lowered due to the use of the binder, and the air permeability is lowered. It is difficult to wear for a long time due to the increase of heat fatigue due to the rise of the inner temperature of the protective garment during work. Heat Exhaution refers to shock symptoms such as weakness of the whole body, boredom, headache, dizziness and vomiting due to insufficient blood circulation due to a large amount of sweating and insufficient blood supply to muscles and internal organs. Body temperature does not go up very much, but very much sweating, blood pressure falls and pulse rate goes up.

Therefore, in the case of breathable protective clothing, it is required to develop materials for protection of the CBR that can protect the human body from chemicals harmful to the human body as well as to enhance the lightness and flexibility and to improve the thermal comfort by reducing the increase in thermal fatigue. .

This will be described later in the Specification for Implementation of the Invention.

SUMMARY OF THE INVENTION Herein, a general summary of the present disclosure is provided, which should not be construed as limiting the scope of the present disclosure. of its features).

According to one aspect of the present disclosure, there is provided a method of fabricating a CBR protective fabric comprising: forming a web formed from electrospun fibers; Introducing an inorganic material that adsorbs a toxic substance by a non-binding method to fibers on the web; And combining the inorganic web with the skin layer. The present invention also provides a method for fabricating a NBR protective clothing fabric.

This will be described later in the Specification for Implementation of the Invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an example of a fabric for a CBR according to the present disclosure;
2 is a diagram showing an example of an electrospinning apparatus that can be used in the present disclosure,
3 is a photograph showing the chemical resistance test result,
4 is a SEM photograph showing the surface of the electrospun nanofiber,
5 is a SEM photograph showing the surface of the inorganic fiber coated nanofiber,
6 is a photograph showing the results of XRD analysis of electrospun nanofibers,
7 is a photograph showing the result of XRD analysis of nanofibers coated with an inorganic material.

The present disclosure will now be described in detail with reference to the accompanying drawing (s).

1 shows an example of a fabric for a selectively permeable CBR according to the present disclosure in which the fabric for a CBR protective apparel comprises a shell 10, an inner shell 30 located inside the shell 10, a shell 10, And a web-like nanofiber web layer 20 formed from ultrafine fibers that become selective permeable between the inner fibers 30. For example, such fibers can be produced by electrospinning or electrospraying. The electrospinning process should be understood as a broad electrospinning process involving a meltblow-spinning process, a force-spinning process, and a process in which these processes add blowing systems and high-current systems . Melt blowing is a process of producing fibers by blowing high-temperature, high-pressure air to a conventional melt spinning process in which a raw polymer is heated-melted and extruded from a spinning nozzle into air to form fibers while cooling. In the force-spinning process, a polymer solution is dropped onto a rotating spinneret (spin coating), and the polymer is ejected out of the polymer by centrifugal force to produce fibers. The main components of this system are spinner, collector, environmental control room, control system, motor and brake. In the multiple spinnerets, the polymer in the cavity is continuously supplied, and the solution or the melt is ejected through the orifice by the centrifugal force to become the nanofiber. Solution, and molten phase materials. At least one of the outer skin 10 and the inner skin 30 may be bonded to the nanofiber web layer 20 as a skin layer and the outer skin 10 and the inner skin 30 may be formed of a material conventionally used in a raw material for a CBR protective clothing.

2 shows an example of an electrospinning apparatus that can be used in the present disclosure. The electrospinning apparatus 40 includes a feeding unit 110 for feeding a polymer material for a fiber material in a molten state, a feeding unit 110 A plurality of spinning nozzles 122 for discharging the polymer solution supplied from the spinning unit 120 in the form of charged filaments or fibers; A control unit 140 disposed on at least both sides of the radiation unit 120 and a control unit 140 and a collector 130 for surrounding the filament stream, And an air conditioning unit 160 for injecting air into the space between the radiation unit 120 and the collector 130 and evaporating the solvent in the space to discharge the air to the outside . The supply unit 110 includes a storage container 112 for storing a solution in which a polymer material as a fiber material is dissolved, a pump 114 for pressurizing the solution stored in the storage container 112 and supplying the solution to the radiation unit 120 in a quantitative manner And a distributor 116 and a transfer tube 118 for distributing the solution to the respective nozzles. The radiation unit 120 performs a function of radiating the fiber raw material solution supplied from the supply unit 110 in the direction of the collector 130 in the form of a fine filament in a charged state. The radiation unit 120 has at least one radiation nozzle pack 126 in which a plurality of radiation nozzles 122 are disposed. The number of the spinning nozzles 122 constituting the spinning nozzle pack 126 or the number of the spinning nozzle packs 126 constituting the spinning unit 120 is determined in consideration of the size, . When a plurality of polymer materials are emitted, a separate spinning nozzle pack may be provided. The collector 130 may be grounded to have a potential difference with respect to the voltage applied to the radiation unit 120, or may be applied with a negative (-) voltage. The collector 130 is for collecting the charged filaments discharged from the radiation unit 120 and can be configured to be continuously moved in a conveyor belt manner via a conveying means such as the roller 132. [ The control unit 140 is provided to prevent the filament stream radiated from each spinning nozzle 122 from escaping from the path such that the filament streams repel each other and the control unit 140 controls at least the spinning nozzle pack 126 Are provided on both sides in the longitudinal direction. The voltage of the same polarity as that of the control unit 140 is applied to the induction unit 150. [ The induction unit 150 is installed around the drawn charged filament stream to guide the traveling direction of the stream. The induction unit 150 is provided in the form of a conductive plate or a conductive rod. The induction unit 150 is charged with the same polarity as the charged filament, thereby inducing the filaments to be accumulated in a limited area on the upper surface of the collector 130. The air conditioning unit 160 volatilizes the solvent dissolved in the charged filament in the space between the radiation unit 120 and the collector 130 and exhausts the solvent to the outside. For example, the air conditioning unit 160 may include a suction fan , Exhaust means and a plurality of air inlet slots (162). The positive (+) voltage is excited by the output voltage of the high voltage unit 170. The high voltage unit 170 outputs a DC voltage in the range of 10 kV to 120 kV. When the raw material solution stored in the supply unit 110 is supplied to the radiation unit 120 through the pump 114 and the distributor 116 in a fixed amount, the current passing portion inside each radiation nozzle pack 126 of the radiation unit 120 The solution is charged. Then, the solution in the charged state passes through the capillary tube of the spinning nozzle 122 and is discharged toward the collector 130 in the form of a fine filament. Here, due to the strong electric field formed between the collector 130 and the charged filaments, the filaments are drawn while being stretched so as to have a nano-scale diameter. In this spinning process, the stream which is to be spread out to the outside due to the repulsive force between the filaments is returned to the original position by the control unit 140 and the correct traveling path can be maintained. On the other hand, since the induction unit 150 is provided above the collector 130 so as to surround the discharged stream, the stream which is going to be out of the path by the induction unit 150 is guided to the limited accumulation region on the collector 130. The filaments thus derived may be continuously integrated on a conveyor belt or rotary drum type collector 130 or may be integrated on the top surface of a substrate 182 such as a film, And is manufactured as a web porous film made of nanofibers. An example of such an electrospinning device is shown in U.S. Patent No. 7,351,052.

The nanofiber web layer 20 can be produced by a variety of conventional methods, but is preferably formed by electrospinning (this is referred to as a web of electrospun fiber). As the nanofiber web layer 20 suitable for electrospinning, it is possible to use a polymer resin which is capable of being deformed and severely dissolved in an organic solvent and is excellent in chemical resistance, such as polytetrafluoro ethylene (PTFE), polyvinylidene Polyvinylidene fluoride (PVDF), polyvinylidene fluoride-co- (hexafluoropropylene), P (VdF-HFP), polyvinylidene fluoride- Copolymers such as poly (vinylidenefluoride) -co- (chlorotrifluoroethylene), P (VdF-CTFE) and PAN (poly acrylonitrile), and mixtures of two or more thereof. The material with poor chemical stability does not function as a protective clothing for CBR, and such examples are specified in the chemical resistance comparison test in Example 2 and FIG.

In the case where the nanofiber web layer 20 is formed by electrospinning, the nanofiber web layer 20 can be obtained by collecting the nanofiber web layer 20 through electrospinning on a substrate such as a film, a nonwoven fabric, or an imitation, and peeling. The nanofiber web layer 20 may also be obtained by electrospinning directly to the inner membrane 30. At this time, the inner film 30 may be transported together with the collector 130, or may be accumulated while passing through the upper surface of the collector 130. The thickness of the nanofiber web layer 20 to be manufactured is preferably 1 to 500 mu m. A nanofiber web having a particle size of 1um or less is weak in strength, and tearing of the web occurs during the laminating process on the outer shell and the inner shell. A nanofiber web of 500um or more is too expensive to manufacture, lowers the moisture permeability, makes it difficult to discharge smooth sweat and water vapor, and increases the weight of the protective clothing, resulting in poor wearing comfort and light weight.

In order to further supplement the protective performance of the prepared nanofiber web layer 20, activated carbon is applied to form a bilayer, or active carbon is formed in the middle of the electrification process, which is a nanofiber manufacturing process, You may. The activated carbon layer may be formed simultaneously with an electrospray method in the middle of the electrospinning process or the activated carbon dispersed in the solvent may be coated on the surface of the nanofibers after the nanofiber web layer 20 is formed. Particularly, the activated carbon formed by the electrospinning method inside the nanofiber web layer 20 has a larger diameter than the empty space between the nanofibers, and thus is trapped inside the nanofiber, thereby preventing the desorption of particles.

In order to provide an inorganic layer on the surface of the nanofiber web layer 20 manufactured as described above, there are physical methods such as sputtering, electron-gun evaporation and the like, and a sol-gel method sol-gel method, chemical vapor deposition, or the like. Among the various methods, the sol-gel method is advantageous for producing a thin and transparent thin film, can be coated at a large temperature at a low temperature, can obtain a homogeneous and high purity thin film, and does not require a complicated device. Also, it is easy to control the composition and mixing ratio of the evaporation material, has excellent reproducibility, and has an advantage that the optical and structural characteristics of the thin film can be freely controlled by using a catalyst or an additive. In addition, since the surface of the nanofiber is uniformly coated not only on the surface of the web but also on the surface of the web when the nanofiber web is applied by the sol-gel method by the immersion coating method, it is preferably coated with an inorganic material by the immersion coating method using a sol- A nanofiber web layer 20 was prepared. Existing nanofibers and other inorganic coating methods are manufactured through a solution manufacturing process in which inorganic particles already formed are added by adding a binder or the like and then coated by a coating process such as bar coating or dip coating. Such a method is generally unsuitable for making an organic-inorganic composite because it is sintered at a high temperature so that the organic material can not withstand and decompose. In addition, inorganic particles dispersed in the binder must be 100 nm or less in order to be coated on the surface of the nanofiber, but the unit cost is too high to manufacture, and the particles produced are not suitable because they are bundled together. According to the present disclosure, a method of introducing inorganic particles into an electrospun fiber without using a binder is defined as a non-binding method. Above all, the problem has to be penetrated into the inside of the nanofiber web and coated on the fiber surface, but these particles have high particle size and viscosity and have a limit to permeate into the inside. To overcome these drawbacks, sol-gel processes have been developed to obtain transparent organic-inorganic composites at low temperatures. The sol-gel process is a technique of synthesizing glass or ceramics at a low temperature through a chemical change in which a sol of an oligomer form is formed by the hydrolysis and condensation reaction of a metal alkoxide M (OR) ₄ and becomes a gel of a three-dimensional network structure . More specifically, the oxide-based inorganic materials produced by the sol-gel process are obtained by a series of processes such as continuous hydrolysis, polycondensation, drying, aging, and calcination. The sol has hydrolysis and condensation reactions, but consists of particles with a size of 1 to 1,000 nm. The sol is charged on the surface of the particle and is stabilized by electrostatic repulsion. At this time, the control of the particle size of the sol can be adjusted by the reaction pH depending on the acid and base used as the catalyst. The gel also refers to a state in which all these soles are made up of one mass. These gels are generally hydrolyzed and the condensation is slowed down when the acid catalyst is used, depending on the drying process, the method and the pH at the time of production, so that linear polymers are produced more than when a base catalyst is used. Is obtained. In addition, when the base catalyst is used, the reaction speed of the condensation increases, so that the size of the particles increases and a strongly bonded three-dimensional network structure is obtained. In the present disclosure, an acid catalyst is used because a high-density ceramic film is required. The sol can be made by refluxing at 100 ° C or less for 8 hours using TTIP as a precursor. If the sol-forming temperature exceeds 100 ° C, gelation tends to occur, so it is advisable to use a cooling system together with a thermostat to maintain the temperature. The sol preparation time is based on the point at which the solution becomes turbid and can not be determined because it is different depending on the manufacturing conditions. In the case of TTIP, refluxing at 80 ° C for about 8 hours produces a milky colored sol solution. In the preparation of the sol, nitric acid is used as the acid catalyst and the amount used is suitably between 0.1 and 1.0 mol. When the amount of nitric acid used is less than 0.1 mol, formation of the sol is difficult and unstable, and the surface of the thin film is not uniformly coated at the time of coating. When the amount of nitric acid is 1.0 mol or more, the grain growth becomes active, and an uneven thin film is formed due to agglomeration of the particles. The sol solution thus prepared is impregnated with nanofibers, sufficiently wetted, dried at 110 ° C for 15 minutes, and then heat treated at 130 ° C for 30 minutes to form an inorganic film. The heat treatment temperature is different depending on the kind of the polymer of the nanofiber used. In the case of the PVdF series, since the melting point is 177 ° C, 130 ° C to 150 ° C is suitable. At below 130 ° C, inorganic film formation is difficult and unreacted material is produced. At 150 ° C or higher, the nanofiber web shrinks and melts.

The materials produced through the above-described sol-gel process include silica (SiO ₂ ), ferrite (Fe ₂ O ₃ ), titanium dioxide (TiO ₂ ), zinc oxide (ZnO ₂ ), nickel oxide (NiO), magnesium oxide (MgO), zirconium oxide (ZrO 2), and zeolite. These metal oxides are widely used as photocatalysts that cause catalysis by light. In particular, the anatase structure of titanium dioxide (TiO 2) having two crystal structures of anatase and rutile is known to have excellent performance. It can receive enough energy to be excited enough in the natural light state and produce hydroxyl radical, so it is harmless to the human body and exhibits excellent detoxification performance.

Further, an oxide containing at least one element selected from the group consisting of aluminum, silicon, zirconium, calcium, strontium, barium and rare earth elements, which is an endothermic inorganic material capable of improving thermal fatigue, It may be coated or coated at the same time as the inorganic material capable of effectively adsorbing and removing the toxic substance through the process, thereby improving the wearing comfort. In order to effectively remove toxic substances, inorganic materials should be coated on the surfaces of nanofibers.

It is preferable to subject the nanofiber web layer 20 constituting the fabric for the CBR to a thermocompression process in order to impart mechanical strength and shape stability. This can be accomplished by laminating the outer skin 10 and / or the inner skin 30 with the nanofiber web layer 20 and then applying heat and pressure to the outer skin / endothelium / nanofiber structure using a roll. Further, the nanofiber web layer 20 integrated by electrospinning is peeled off to a base material such as a film, a nonwoven fabric, or an imitation, and heat and pressure are applied to the nanofiber web layer 20 in advance through a calender roll, ) Can be reduced and the overall thickness after lamination can be minimized. It is possible to combine them through the minimum pressure during the process of bonding with the inner membrane 10. Thus, the bulky characteristics of the nanofiber web layer 20 can be eliminated in the thermocompression bonding process, and the process speed can be improved by the minimum pressure in the bonding process. In addition, after the inorganic coating process, the nanofiber web layer 20 coated with the inorganic material, which can be formed in a process of laminating with the endothelial layer 30 and then using a roll, can be performed. Heat and pressure are exerted through the calender roll, .

Example 1

- Fabrication of PVdF nanofiber web layer

The PVdF polymer was mixed with dimethylacetamide (DMAc, Dimethylacetamide) and acetone (80 wt%) at a weight ratio of 80:20 to prepare a 15 wt% electric spinning solution. Then, a storage container of the electrospinning device 40 112) to prepare fibers. The spinning nozzle pack 126 and the collector 130 are vertically connected to the electrospinning device 40 and used as a base material for collecting the fibers. The collector 130 is placed on the upper surface of the collector 130, Roll-to-roll facility in which the substrate was passed through, and the fibers by electrospinning were only accumulated on the top of the substrate. The electrospinning device 40 was provided with a spinning nozzle pack 126 in which 60 spinning nozzles 122 were arranged. The applied voltage was 30 kV and the discharge amount was 20 / min.hole. The distance between the collector 130 and the ends of the spinning nozzles 122 was maintained at 20 cm to produce a 20 μm thick nanofiber web layer 20.

- Fabrication of inorganic coated nanofiber web layer (20)

For inorganic coatings, the present disclosure provides a method of making and impregnating sol. Titanium tetra-isopropoxide (TTIP; Junsei Chemical Industries) was used as a starting material, DI water was used as a solvent, and nitric acid was used as a catalyst. 5 ml of anhydrous ethanol (99.9%) and 30 ml of TTIP were added to 180 ml of ultrapure water and sufficiently stirred. Then, 0.1 mole of nitric acid was added to synthesize a sol. The temperature of the solution was kept at 20 ° C during the synthesis of the sol, stirred vigorously, and refluxed at 80 ° C for 8 hours to prepare opaque coated sol of milky light. The prepared coating sol was stable without gel formation for several months. Sol - gel immersion coating method was used for the inorganic coating on the surface of the nanofibers using the coating sol prepared as described above. The fabricated nanofiber web was immersed in a low temperature TiO ₂ sol and the pulling rate of the specimen was kept constant at 20 mm / min for homogeneous TiO ₂ coating. After that, it was dried in a furnace at 110 ° C for 15 minutes and then heat-treated at 130 ° C for 30 minutes to prepare a TiO ₂ -coated nanofiber web.

Example 2

- Fabrication of PU nanofiber web layer

PU polymer was prepared by mixing 15% by weight of dimethylacetamide (DMAc, dimethylacetamide) and acetone (Acetone) in a weight ratio of 50:50 to prepare a 15wt% electrospinning solution, and then using the same apparatus as the PVdF nanofiber web layer of Example 1 . The spinning nozzle pack 126 in which the spinning nozzles 122 were arranged was installed using the electrospinning device 40. The applied voltage was 40 kV and the discharge amount was 20 / min.hole. The distance between the collector 130 and the ends of the spinning nozzles 122 was maintained at 20 cm to produce a 20 μm thick nanofiber web layer 20.

The chemical resistance test was carried out using the nanofiber web layer for protection use prepared in the examples. The nanofiber web layer used was made of nanofiber using polyurethane (PU), which is widely used as breathable and waterproof fabric material, and nanofiber was fabricated using newly applied PVdF polymer because of its excellent chemical resistance. The results of the chemical resistance test were shown in FIG. 3 using an organic solvent.

Nanofibers of polyurethane (PU) tend to be corroded in acidic solutions, and basic solutions tend to lose flexibility and tend to break down. Also, the results showed that the organic solvent showed severe shrinkage. On the other hand, PVdF nanofibers show a stable sample state over the entire test reagent, indicating excellent chemical resistance. This is a material for protection against chemical substances that is directly exposed to harmful chemicals. It is a material that has excellent chemical resistance such as PVdF and has a function similar to that of existing materials and a feeling of fit, rather than a commonly used polymer such as polyurethane (PU) It is preferable to use it as a protective clothing material.

Existing CBR materials have a protective capacity by creating an airtight space by focusing on protection ability, but it is difficult to discharge water vapor due to internal heat and sweat. However, recently, it has become a trend to require air permeability, moisture permeability, and the ability to maintain its function even after washing several times.

FIG. 4 is a SEM photograph showing the surface of the electrospun PVdF fiber web, and FIG. 5 is a SEM photograph showing a surface of a web coated with an inorganic material on the nanofibers through a sol-gel process. It is possible to identify the inorganic particles coated on the surface of the nanofiber, and it can be seen that the particles evenly distributed in the inside of the web.

FIG. 6 is a photograph showing the X-ray diffraction analysis (XRD) of the electrospun PVdF fiber web, and FIG. 7 is a photograph showing the results of X-ray diffraction analysis of a web coated with an inorganic material on the nanofibers. The results of the X-ray diffraction analysis show that the crystal phase of TiO 2, which is an inorganic substance used in the sol-gel process, is coated on the nanofiber web with anatase crystal phase, which is known to have the best photocatalytic activity. It can be seen that the crystal formation is uniformly good.

Various embodiments of the present disclosure will be described below.

(1) The method for producing a fabric for a NBC protective clothing characterized in that the non-binding method is at least one selected from a sputtering method, an electron gun evaporation method, a sol-gel method and a chemical vapor deposition method. Here, not one nonbinding method is necessarily used but two or more methods can be used in combination, such as adding an inorganic substance to the surface of the fiber by sputtering after introducing an inorganic substance by a sol-gel method.

(2) A method for fabricating a fabric for a CBC protector characterized in that an inorganic material is introduced into the web surface and the fibers inside the web in the step of introducing the inorganic material.

(3) The non-binding method is a sol-gel method.

(4) The fibers are preferably made of polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyvinylidene fluoride (PVDF), polyvinylidene fluoride ), poly (vinylidenefluoride) -co- (chlorotrifluoroethylene), and P (VdF-CTFE)), such as poly (vinylidene fluoride) -co- (hexafluoropropylene), P And copolymers thereof. However, it is also possible to use a polyester polymer such as PBT (poly butylene therephthalate), a polyamide polymer such as nylon, an acrylic polymer such as polyacrylonitrile (PAN) A sulfonic polymer such as polyether sulfone, a vinyl polymer such as polyvinyl alcohol (PVA), an olefin polymer such as PP (polypropylene), or a copolymer of two or more thereof Mixture.

(5) A method for fabricating a fabric for a CBC protector characterized in that the fiber comprises a poly (vinylidene fluoride) (PVDF) copolymer.

(6) The method according to any one of the above items (1) to (4), further comprising introducing an endothermic inorganic substance composed of an oxide of at least one selected from the group consisting of aluminum, silicon, zirconium, calcium, strontium, barium, A method for fabricating a fabric.

(7) A method of manufacturing a fabric for a NBC protector, further comprising: thermo-compressing the web before or after introduction of the inorganic material.

(8) The method of manufacturing a fabric for a CBC protective clothing characterized in that the step of thermocompression bonding is performed in a process of bonding the web and the skin layer.

(9) A method for fabricating a fabric for a CBR protective barrier characterized in that activated carbon is introduced into the web in the step of forming the web.

The fabric of the Cub Protective Apparatus used in this disclosure includes nanofiber webs that can replace activated carbon, which is most commonly used in the prior art. Nanofibrous webs are manufactured by electrospinning, lightweight and thin, and may be added to existing products. The surface of the nanofibers constituting the nanofiber web is characterized in that an inorganic substance having a function of adsorbing and decomposing a toxic substance is coated. In order to provide an inorganic layer on the surface of nanofibers, there are physical methods such as sputtering and electron-gun evaporation. Sol-gel method and chemical vapor deposition method (SiO ₂ ), ferrite (Fe ₂ O ₃ ), titanium dioxide (Fe ₂ O ₃ ), and the like are used as the materials capable of effectively adsorbing and chemically decomposing and removing toxic substances. TiO ₂ ), zinc oxide (ZnO ₂ ), nickel oxide (NiO), magnesium oxide (MgO), zirconium oxide (ZrO 2), and zeolite. Further, an oxide including one or more elements selected from the group consisting of aluminum, silicon, zirconium, calcium, strontium, barium and rare earth elements, which is an endothermic inorganic material capable of improving thermal fatigue, It can solve the thermal fatigue problem and improve the fit.

In addition, according to the present invention, there is provided a cloth for protecting a CBR according to the present invention, which comprises a fluorine-based water-repellent sheath that can block external harmful gas or poisonous gas and can withstand corrosive substances, A nanofiber web layer coated with an inorganic material and an endothelium that enhances wearability, and a fabric structure including the same.

The fabric for protective clothing according to the present disclosure is excellent in the effect of removing toxic substances, securing breathability, oil repellency, water repellency, and light weight. By introducing an inorganic substance on the surface of nanofiber, it is possible to wash the nanofiber by integrating it with the nanofiber, which has a function of adsorbing and decomposing the toxic substance. By using the inorganic substance which improves the internal heat accumulation problem simultaneously, the heat fatigue problem is solved when it is worn for a long time .

Accordingly, it is an object of the present invention to provide a nano-fiber web having a uniform coating property of an inorganic material having a photocatalytic activity for decomposing a chemical substance at the same time and having an excellent breathability and water- A nanofiber web on which an inorganic material prepared by the method is uniformly coated, and a nanofiber web on which the inorganic material is uniformly coated.

In addition, according to the method of manufacturing the fabric for protective clothing according to the present disclosure, not only the surface of the nanofiber web layer is coated but also the inside of the nanofiber web layer is coated and penetrated into the inside of the nanofiber web layer, thereby dramatically improving the specific surface area of the inorganic material, Since the pores of the nanofiber web are maintained, the discharge of sweat and water vapor discharged from the human body is smooth, and the protective function is strengthened, and it becomes possible to produce a protective garment excellent in wearing comfort.

 The outer skin (10) of the nanofiber web layer (20)

Claims (12)

A method of fabricating a NBR protective clothing fabric,
Forming a web formed from electrospun fiber;
Introducing an inorganic material that adsorbs a toxic substance by a non-binding method to fibers on the web; And,
And combining the inorganic web with a skin layer. ≪ RTI ID = 0.0 > 11. < / RTI > The method according to claim 1,
Wherein the non-binding method is a sol-gel method. The method according to claim 1,
Wherein the step of introducing the inorganic material comprises introducing an inorganic material into the web surface and the fibers inside the web. The method according to claim 1,
The fibers may be selected from the group consisting of polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), polyvinylidene fluoride (co-hexafluoropropylene) ), P (VdF-HFP), poly (vinylidene fluoride) -co- (chlorotrifluoroethylene), P (VdF-CTFE) Wherein the mixture is a mixture of two or more species. The method according to claim 1,
The fiber may be a copolymer selected from a fluorine-based polymer, a polyester-based polymer, a polyamide-based polymer, an acrylic polymer, a sulfonic polymer, a vinyl polymer, an olefin polymer, or a mixture of two or more thereof ≪ RTI ID = 0.0 > 1, < / RTI > The method according to claim 5,
Wherein the fiber comprises a poly (vinylidene fluoride) (PVDF) copolymer. ≪ RTI ID = 0.0 > 11. < / RTI > The method of claim 6,
Wherein the non-binding method is a sol-gel method. The method according to claim 1,
The inorganic material is selected from the group consisting of silica (SiO ₂ ), ferrite (Fe ₂ O ₃ ), titanium dioxide (TiO ₂ ), zinc oxide (ZnO ₂ ), nickel oxide (NiO), magnesium oxide (MgO), zirconium oxide Characterized in that the method comprises the steps of: The method according to claim 1,
Wherein the step of introducing the inorganic material further comprises introducing an endothermic inorganic material composed of an oxide of at least one selected from the group consisting of aluminum, silicon, zirconium, calcium, strontium, barium and rare earth elements How to. The method according to claim 1,
And thermo-compressing the web before or after introduction of the inorganic material. ≪ RTI ID = 0.0 > 11. < / RTI > The method of claim 10,
Wherein the thermocompression bonding step is performed in a process of bonding the web and the skin layer. The method according to claim 1,
Characterized in that the activated carbon is introduced into the web in the step of forming the web.

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