KR101189457B1 - Armor materials having shear thickening fluid and method for manufacturing the same - Google Patents

Abstract

The present invention is impregnated with a shear thickening fluid containing nanoparticles in the fabric used as a body armor, by creating a fluid cluster of nanoparticles during an external impact to properly increase the friction between fibers constituting the bulletproof fabric to absorb and disperse the impact energy It relates to a ballistic material according to an embodiment of the present invention that can improve the ballistic performance, and improve the wearing comfort while maintaining the same flexibility as the fabric with the reduction of the weight of the body armor. To this end, a bulletproof material having a shear thickening fluid according to an embodiment of the present invention, the front portion including the first fabric layer; A central portion comprising second fabric layers impregnated with a shear thickening fluid; And a rear portion including the third fabric layers impregnated with the shear thickening fluid, wherein the amount of the shear thickening fluid impregnated in the second fabric layers is greater than that of the shear thickening fluid impregnated in the third fabric layers. It is characterized in that it is set differently from the impregnation amount.

Description

Bulletproof material having a shear thickening fluid and a method of manufacturing the same {ARMOR MATERIALS HAVING SHEAR THICKENING FLUID AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a bulletproof material having a shear thickening fluid and a method of manufacturing the same.

In general, body armor is made of nylon fibers, and today, the main components are aramid fibers and ultra high molecular weight polyethylene (UHMWPE) fibers. These fibers are manufactured in various forms and used according to the protection performance requirements, but the most widely used structure is a unidirectional tape (Uni) which forms one layer by laminating fabrics and fibers in a 0 degree direction and a 90 degree direction. -directional tape (UD). Body armor is used by stacking these materials in multiple layers according to the requirements of the protective force.

In the form of the fabric used in the body armor, plain weave, Twill, runners, etc. are used, the fabric is generally excellent in the protection performance by the debris shot, while slightly weak in the rear deformation caused by the pistol bullet, Excellent flexibility One-way tape is somewhat vulnerable to fragmentation bullets, and has excellent protection against pistols, but the stiffness of the material suppresses the wearer's activity, making the thickness of the bulletproof material thicker when demanding high protection. It is becoming.

Generally, the fabric is composed of warp and weft yarns, and the fibers used here are woven using different deniers (1 g per 9000 m) depending on the application. There are many types of weaving of fabrics, but plain weave is the most widely used for personal body armor because of its high flexibility and high friction between yarn and yarn. In the case of fabrics, when fragmentation collides, the yarns that make up the fabric are pulled out, absorbing and dispersing the energy of the coal, and stopping. The pull strength is controlled by the friction force between yarns and yarns. If the energy of exceeds the frictional force or the tensile strength of the yarn, the bullet will break and penetrate the yarn. On the other hand, pistols are generally made of lead, and the outside is covered with copper, and when the bombardment hits the bulletproof material, the shape of the bullet changes to a mushroom shape, which causes a great impact on the body. It has a different bulletproof mechanism. Therefore, fragmented bullets must block penetration, and pistols can reduce the impact on the human body only by reducing the back face signature (BFS). Modern body armor requires both defense against fragmented bullets and bullets that fly at high speed.

Existing fabrics have limitations in increasing the strength of the yarns and increasing the friction between the yarns and the yarns, limiting the fast debris penetrating jersey and reducing the rear deformation caused by pistols. For increased protection, fabrics are more effective for body armor because the use of fabrics improves the wearer's mobility rather than the use of UD materials.

Basically, the bulletproof material can improve the ballistic performance when the impact is applied from the outside to quickly transmit the kinetic energy to the adjacent fiber or fabric layer to disperse the impact. In order to disperse impact energy by increasing friction between fibers, US Pat. However, this technique is bulky, heavy and has relatively limited flexibility.

An object of the present invention is to impregnate a fabric used as a body armor by impregnating a shear thickening fluid containing nanoparticles, thereby increasing the frictional force between fibers constituting the bulletproof fabric by generating a fluid cluster of nanoparticles during an external impact, thereby improving impact energy. An antiballistic material and a method for producing the same which can be absorbed and dispersed to improve ballistic performance.

Another object of the present invention is to reduce the weight of the body armor by impregnating the shear thickening fluid in the fabric used as the body armor, and to maintain the same level of flexibility as the fabric body, and the anti-ballistic material and its manufacturing method To provide.

An antiballistic material having a shear thickening fluid according to an embodiment of the present invention for achieving the above object, the anti-ballistic material comprising a fabric layer, the front portion comprising a first fabric layer; A central portion comprising second fabric layers impregnated with a shear thickening fluid; And a rear portion including the third fabric layers impregnated with the shear thickening fluid, wherein the amount of the shear thickening fluid impregnated in the second fabric layers is greater than that of the shear thickening fluid impregnated in the third fabric layers. It is characterized in that it is set differently from the impregnation amount.

As an example related to the present invention, the shear thickening fluid may be impregnated only at edge portions of the second fabric layer and the third fabric layer.

As an example related to the present invention, the impregnation amount of the shear thickening fluid impregnated in the second fabric layers is set to be lower than the impregnation amount of the shear thickening fluid impregnated in the third fabric layers.

As an example related to the present invention, the amount of shear thickening fluid impregnated in the second fabric layers is 7%, and the amount of shear thickening fluid impregnated in the third fabric layers is 20%. do.

As an example related to the present invention, the first to the third fabric layer is characterized in that it comprises any one of aramid fiber, polyethylene fiber, polypropylene fiber, xylon fiber, nylon fiber, glass fiber, carbon fiber.

As an example related to the present invention, the shear thickening fluid includes a silica sol, and the dispersion medium of the shear thickening fluid includes polyethylene glycol.

As an example related to the present invention, the shear thickening fluid is a fluid including inorganic nanoparticles dispersed in an organic solvent, and the inorganic nanoparticles are silicon oxide, aluminum oxide, calcium carbonate, natural mineral particles, or a mixture thereof. It includes, the organic solvent is characterized in that it comprises at least one or more of methanol, ethanol, ethylene glycol and polyethylene glycol.

Method for producing a bulletproof material having a shear thickening fluid according to an embodiment of the present invention for achieving the above object, a front portion, a central portion, a rear portion each comprising a plurality of fabric layers by cutting the fabrics, and laminated the cut fabrics A method of manufacturing a bulletproof material comprising: impregnating a shear thickening fluid into first fabric layers included in the central portion; And impregnating shear thickening fluid in the second fabric layers included in the rear surface, wherein the amount of shear thickening fluid impregnated in the first fabric layers is shear impregnated in the second fabric layers. It is characterized in that it is set differently from the impregnation amount of the thickening fluid.

The anti-ballistic material according to an embodiment of the present invention and a method for manufacturing the same, by impregnating the shear thickening fluid containing nanoparticles in the fabric used as the body armor, the fiber constituting the ballistic fabric by the production of a fluid cluster of nanoparticles during an external impact By appropriately increasing the frictional force of the liver to absorb and disperse the impact energy has the effect of improving the ballistic performance.

The anti-ballistic material according to the embodiment of the present invention and a method for manufacturing the same, by impregnating the shear thickening fluid in the fabric used as the body armor, to reduce the weight of the body armor, while maintaining the same flexibility as the fabric to improve the wearing comfort There is also an effect.

1 is a block diagram showing a bulletproof material according to an embodiment of the present invention.
2 is a view showing a first laminated material (front portion) of a bulletproof material according to an embodiment of the present invention.
3 is a view showing a second laminate (central portion) of the antiballistic material according to the embodiment of the present invention.
4 is a view showing a third laminate (rear portion) of the antiballistic material according to the embodiment of the present invention.

Hereinafter, by impregnating the shear thickening fluid containing nanoparticles in the fabric used as the body armor, the impact force is absorbed and dispersed by appropriately increasing the friction force between the fibers constituting the bulletproof fabric by generating a fluid cluster of nanoparticles during an external impact Bulletproof material and a method for manufacturing the same according to an embodiment of the present invention can improve the bulletproof performance, and improve the wearing comfort while maintaining the same flexibility as the fabric with the reduction of the weight of the body armor. It will be described in detail with reference to 4.

In particular, the technical problem of the body armor requires the defense of the above two bullets at the same time in the request of defending fragmented bullets or pistols alone, and in the case of fragmented bullets, high-speed fragmentation defenses are required. On the other hand, although the protective area was previously limited mainly to the torso, recently, not only the torso but also the protection of the neck, shoulders, side, and heart, as the weight of the body armor increases, the volume and thickness become thicker, which impedes activity. As a result, in addition to weight reduction, convenience and wearability improvement are also required.

Currently, body armor must defend both 500-600 m / s high-speed fragmentation bullets or level III-A required by the National Institute of Justice (NIJ) standards, 9mm FMJ and .44 magnum bullets simultaneously. Conventional fabric type is excellent in fragmentation bullet protection but weak in rear deformation resistance by pistol bullets, UD material is conversely vulnerable to fragmentation bullet and excellent defense against deformation by pistol bullets. However, the latter material is too stiff when the thickness becomes thick, greatly reducing the wearer's convenience. Therefore, in order to solve this problem, the present invention is to treat the shear thickening fluid in the fabric to satisfy the protective performance, to maintain a lighter and more flexible. In order to defend against debris and pistols, the optimum condition of shear thickening fluid and the optimal design of bulletproof material must be solved.

Also in the shear thickening fluid impregnation amount, if the impregnation amount is too high, the friction force between the fibers increases too much, the fiber breakage occurs, and the protective force is lowered. Therefore, the present invention is impregnated with a shear thickening fluid in the fabric used as a body armor to absorb the impact energy while appropriately increasing the friction force between the fibers constituting the ballistic fabric by generating a fluid cluster of nanoparticles during an external impact to improve the ballistic performance In addition to reducing weight, maintaining the same level of flexibility as the fabric to improve the fit. For this purpose, the optimum condition of shear thickening fluid is suggested, and the rear strain caused by high-speed debris and pistols is minimized through the design of a gradient thickening that varies the shear thickening fluid according to the stacking position of the fabric.

1 is a block diagram showing a bulletproof material according to an embodiment of the present invention.

As shown in Figure 1, the anti-ballistic material 100 according to an embodiment of the present invention, the first laminated material (front portion) 110 including a plurality of fabric layers; A second laminate (center) 120 comprising fabric layers impregnated with a shear thickening fluid; And a third laminate (rear portion) 130 including the fabric layers impregnated with the shear thickening fluid, wherein the amount of the shear thickening fluid impregnated in the second laminate 120 (eg, 3-15% or 7%) is set lower than the impregnation amount (for example, 15-30% or 20%) of the shear thickening fluid impregnated in the third laminate (130).

In addition, the number of layers of the fabric 140 included in the first laminate 110, the second laminate 120, and the third laminate 130 may be added or reduced according to the designer's intention or required ballistic performance. Can be. The fabric component used in the fabric layer may be any one or more of aramid fibers, polyethylene fibers, polypropylene fibers, xylon fibers, nylon fibers, glass fibers, carbon fibers. Denier (Denier: 1g per 9000) used in the fabric of the aramid fibers includes 200 to 1000. Forms of the fabric include plain weave, runner weave, twill weave, nonwoven fabric, knitted fabric. The plain weave includes 25 to 30, the same number per inch of warp and weft yarn, respectively. The plain weave fabric may have a structure that varies the number of yarns per inch.

Bulletproof material 100 according to an embodiment of the present invention to protect the high-speed Cal.22 (5.56mm) fragmentation bullet, and to meet the bulletproof material (110, 120, 130) at the same time to meet the "NIJ Standard 0101.06 level III-A" standard It consists of the laminated body arrange | positioned and laminated | stacked.

The shear thickening fluid is a suspension in which the viscosity of the solution is discontinuously increased while forming a fluid cluster of dispersed particles along with an increase in shear stress as a non-Newtonian fluid flow characteristic in the concentrated colloidal dispersion solution. When the fabric is impregnated with the shear thickening fluid, it is normally in a liquid state to maintain flexibility, but when the bombardment is impacted, the liquid phase turns into a solid phase due to the sharp viscosity increase of the shear thickening fluid, thereby absorbing the impact energy due to the increased frictional force between the fibers. And dispersion can greatly increase ballistic performance.

In the present invention, the nanoparticles used in the preparation of the shear thickening fluid are 45 nm silica sol, the dispersion medium is polyethylene glycol (molecular weight: # 200), and the volume fraction of the particles constituting the shear thickening fluid is 0.5 to 0.60.

The shear thickening fluid is a nanoparticle used as a sol-type fluid in which inorganic nanoparticles are dispersed in an organic solvent may include silicon oxide, aluminum oxide, calcium carbonate, natural minerals or mixtures thereof, and the organic solvent is ethylene It may include one of glycol, polyethylene glycol. The diameter of the shear thickening fluid may be 10 ~ 100nm.

As a woven fabric (or fiber) according to an embodiment of the present invention, high strength fine yarn may be used as Heracron 600 denier polyaramid (KOLON). The fabric (fiber) has a plain weave structure, the number of warp X weft yarn can be used two types of 28 X 28 and 34 X 34 per inch, each of the surface density is 150g / m2, 180g / m2. The filament tensile strength of polyaramid fiber is 26g / d, the tensile elongation 3.3% and the elastic modulus is 750g / d.

2 is a view showing a first laminated material (front portion) of a bulletproof material according to an embodiment of the present invention.

As shown in FIG. 2, the fabric layers 110a of the first laminate 100 do not include shear thickening fluid and are cut to 400 × 400 mm. Here, the number of layers of the fabric layer 110a of the first laminate 100 may be 7 to 45 layers, and the number of layers may be added or reduced according to the designer's intention or required ballistic performance.

3 is a view showing a second laminate (central portion) of the antiballistic material according to the embodiment of the present invention.

As shown in Figure 3, before impregnating the shear thickening fluid in the fabric layer (120a) of the second laminate 120, the fabric is cut to 400 x 400mm and dried for 30 minutes in an oven at 100 ℃. Dispersing and impregnating the shear thickening fluid by applying a predetermined pressure (for example, a pressure of 20 kg / cm 2) in a press after applying a dispersion of the shear thickening fluid in methanol at a predetermined ratio to the fabric layer 120a. Make it even. At this time, the shear thickening fluid is impregnated to the 50 ~ 80mm range from the edge of the fabric layer (sample) 120a, the amount of the shear thickening fluid impregnated shear thickening impregnated in the fabric layers of the third laminate (130) Impregnation lower than the impregnation amount of the fluid. In addition, the central portion (120b) of the specimen is maintained in the fabric state without impregnating the shear thickening fluid.

In addition, the impregnation amount (add-on%) to the weight of the fabric (add-on%) with the shear thickening fluid only within 50 ~ 80mm from the edge of the one or more layers of the fabric layer of the second laminate 120, 1-15wt%, The central portion 102b may not impregnate the shear thickening fluid.

4 is a view showing a third laminate (rear portion) of the antiballistic material according to the embodiment of the present invention.

As shown in FIG. 4, the fabric layer (test piece) 130a of the third laminate (rear part) 130 treats the impregnation amount of the shear thickening fluid higher than the test piece 120a, and also has a central portion ( 130b) does not impregnate the shear thickening fluid. The impregnated specimen is then subjected to an appropriate pressure in a hydraulic press so that the shear thickening fluid is uniformly impregnated and dispersed in the solution. Here, before impregnating the shear thickening fluid in the fabric layer 130a of the third laminate 130, the fabric may be cut into 400 × 400 mm and then dried for 100 minutes in an oven at 100 ° C.

Subsequently, the fabric layer (sample) of the second laminate 120 and the third laminate is dried in an oven at 70 ° C. for 20 minutes. The dried second laminate 120 and the third laminate 130 are arranged together with the first laminate 110 in the 110, 120, 130 stacking order, and then by stitching the edges of the laminate 110, 120, 130 with a cotton-nylon blend yarn. The antiballistic material 100 is prepared.

In addition, the impregnation amount (add-on%) of the weight of the fabric with the shear thickening fluid in the range of 50 ~ 80mm from the edge of the one or more layers of the fabric layer of the third laminate 130 to 5 ~ 30wt% The central portion 130b may not impregnate the shear thickening fluid.

The surface of the fiber of the fabric constituting the laminated material of the central portion 120 and the rear portion 130, the impregnated shear thickening fluid may not be a water resistant treatment (WRT).

Hereinafter, the results of measuring the ballistic resistance of the manufactured ballistic material 100 will be described.

The bulletproof test used two types of debris and .44 magnum pistols. This is because fragmentation is a penetration-oriented shot, and .44 Magnum shot causes a rear deformation during impact rather than penetration, causing injury or death. The two types of shots have different bulletproof mechanisms. Bulletproof test is required. The fragment was used with Cal.22 FSP (1.1g), and according to the Mil-STD-662F (V50 Ballistic Test for Armor) specification, after both sides of the specimen were clamped, the penetration and non-penetration probability of the bullet was 50%. The V50 (BL) value which is the protection limit shown is calculated | required. .44 Magnum bullets belong to NIJ-STD level III-A and were measured for back face signature (BFS) due to the impact of the bullet. To measure this, clay clay (Roma Plastina No1) was used. The specimen of the antiballistic material 100 of the present invention was placed on the clay and fixed with a band having elasticity according to the NIJ standard.

The location of the impact was 4-6 shots at the edge and center area according to the NIJ standard. After the test was finished, the impact clay deformed clay was pushed into a flat plate with a steel plate, and the depth of deformation was measured with a vernier caliper. The NIJ specification limits the maximum allowable depth to 44mm.

Hereinafter, the bulletproof test results of the bulletproof material according to various embodiments will be described.

The first laminated material (AN) consisting of only the fabric (110a) is not applied to the shear thickening fluid and the entire surface area of the third laminated material (rear portion) 130 is treated with a shear thickening fluid impregnation amount of 20% (CS ), And the fragmentation coal and .44 magnum results for the specimens having different gradients of the impregnated amounts of the second laminate (center) 120 and the third laminate (rear) 130 are shown in Table 1.

Example Stacking order Surface density
(kg / m2) V50 (m / s) Rear deformation (mm) edge center One AN X 38 5.55 550 59 54 2 AN x 25 + CS (20%) x 10 5.55 548 48 41 3 AN X 15 + BS (10%) X 10 + CS (20%) X 10 5.60 550 46 40

For example, the first embodiment shows the results of a ballistic test of a laminate composed of only 38 fabric layers, and the second embodiment has 25 fabric layers and 10 fabric layers containing 20% shear thickening fluid. Bulletproof test results of a laminate composed only of the present invention, the third embodiment is a fabric layer of 15 layers, 10 layers of fabric layer containing 10% shear thickening fluid, 10 layers of fabric containing 20% shear thickening fluid The result of the bulletproof test of the laminated material which consists of layers is shown. In other words, the V50 value of the debris was not different when pure fabric and shear thickening fluid were treated. However, the rear deformation caused by the .44 Magnum bomb showed a big difference. If only the rear side CS is impregnated with the shear thickening fluid, the shear thickening fluid decreases by about 19% in the sample of Example 2 and 22% in the sample in Example 3, compared with the sample (fabric layer) of the first embodiment. Can be. On the other hand, it can be seen that the rear strain at the central portion of the specimen also has a somewhat effective application of shear thickening fluid.

In the following examples (Table 2), the ballistic performance was evaluated according to the impregnation amount of shear thickening fluid according to the tissue difference of the weave at the same surface density. The woven structure used for the specimens (fabric layer) of Examples 4 and 6 was 28 X 28 / inch, and the specimens of Examples 5 and 7 were 34 X 34 / inch and had a more compact structure. Have Shear thickening fluid impregnation treated only the edge of the laminate, which is a feature of the present invention, but did not process the central portion.

Example Stacking order Surface density
(kg / m2) V50 (m / s) Rear deformation (mm) edge center 4 AN X 45 6.6 607 51 47 5 AN x 37 6.6 613 51 49 6 AN X 7 + BS (7%) X18 + CS ((20%) x17 6.2 598 41 40 7 ANX7 + BS (7%) x16 + CS
(20%) x 14 6.2 624 43 41

For example, the fourth embodiment shows the ballistic test results of the laminate composed of only 45 fabric layers (AN), and the fifth embodiment shows the ballistic test results of the laminate composed of only 37 fabric layers (AN). The sixth embodiment shows seven layers of fabric (AN), eighteen layers of fabric (BS) containing 7% shear thickening fluid, and seventeen layers of fabric (CS) containing 20% shear thickening fluid. The ballistic test results of the laminate composed of) are shown. The seventh embodiment shows seven layers of fabric (AN), 16 layers of fabric (BS) including 7% of shear thickening fluid, and 20% of shear thickening fluid. It shows the ballistic test results of the laminate composed of 14 fabric layers (CS) including. That is, in the fragmentation preventing force, the structure used in the sixth to seventh embodiments showed almost the same protective force. However, the rear deformation caused by the pistol was reduced by 13% and 20% in the specimens (fabric layer) of the fifth and sixth embodiments, respectively, compared to the fourth pure fabric. Therefore, when the impregnation amount of the shear thickening fluid is gradient, the weight can be greatly reduced compared to the pure fabric. That is, the NIJ standard limits the maximum allowable back strain to 44 mm, so that the specimens of the sixth and seventh embodiments can be lighter by 13% or more than the pure fabric.

Therefore, the anti-ballistic material 100 according to the impregnation amount gradient design of the shear thickening fluid according to an embodiment of the present invention, it is possible to defend against fragmentation bullet bullets of high-speed flight, compared to the conventional pure textile ballistic material, NIJ Standard 0101.06 level III-A can be satisfied simultaneously, especially with the application of shear thickening fluid and gradient.

In addition, the treatment of shear thickening fluid on the fabric to maintain the same flexibility as the fabric to increase the wearer's activity. In particular, the present invention can greatly improve the ballistic performance by treating the shear thickening fluid on the edge of the fabric type bulletproof material is the weakest ballistic force.

The barrier material according to the embodiment of the present invention can be used as a mine protective suit, including personal body armor, explosion-proof blankets, field tents, and protective products for soldier transport, fragmentation protection tents, vehicle anti-ballistic material, protective material for ammunition transport vehicles, various anti-ballistic materials. .

As described above, the anti-ballistic material according to an embodiment of the present invention and a method for manufacturing the same, by impregnating a shear thickening fluid containing nanoparticles in the fabric used as a body armor, to produce a fluid cluster of nanoparticles during an external impact By appropriately increasing the friction between the fibers constituting the bulletproof fabric to absorb and disperse the impact energy can improve the ballistic performance.

The anti-ballistic material according to the embodiment of the present invention and a method for manufacturing the same, by impregnating the shear thickening fluid in the fabric used as the body armor, to reduce the weight of the body armor, while maintaining the same flexibility as the fabric to improve the wearing comfort Can be.

Those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential features of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

110: first laminate 120: second laminate
130: third laminate

Claims (14)

In the antiballistic material comprising fabric layers,
A front portion comprising first fabric layers;
A central portion comprising second fabric layers impregnated with a shear thickening fluid;
And a rear portion including the third fabric layers impregnated with the shear thickening fluid, wherein the amount of the shear thickening fluid impregnated in the second fabric layers is greater than that of the shear thickening fluid impregnated in the third fabric layers. Is set differently from impregnation amount,
The shear thickening fluid ballistic material having a shear thickening fluid, characterized in that the impregnated only in the edge portion of the second fabric layer and the third fabric layer. delete The method of claim 1, wherein the impregnation amount of the shear thickening fluid impregnated in the second fabric layers,
Bulletproof material having a shear thickening fluid, characterized in that the lower than the impregnation amount of the shear thickening fluid impregnated in the third fabric layers. The shear thickening fluid impregnated in the second fabric layers is 7%, and the shear thickening fluid impregnation amount is 20%. Bulletproof material with thickening fluid. The method of claim 1, wherein the first to third fabric layer,
Bulletproof material having a shear thickening fluid, characterized in that it comprises any one of aramid fibers, polyethylene fibers, polypropylene fibers, xylon fibers, nylon fibers, glass fibers, carbon fibers. The bulletproof material of claim 1, wherein the shear thickening fluid comprises a silica sol, and the dispersion medium of the shear thickening fluid comprises polyethylene glycol. The method of claim 1, wherein the shear thickening fluid,
A fluid comprising inorganic nanoparticles dispersed in an organic solvent, wherein the inorganic nanoparticles include silicon oxide, aluminum oxide, calcium carbonate, natural mineral particles or mixtures thereof, and the organic solvent includes methanol, ethanol, ethylene glycol, Bulletproof material having a shear thickening fluid, characterized in that it comprises at least one or more of polyethylene glycol. In the method of manufacturing a bulletproof material comprising a front portion, a central portion, a back portion each comprising a plurality of fabric layers by cutting the fabrics, and laminated the cut fabrics,
Impregnating the shear thickening fluid into the first fabric layers included in the central portion;
And impregnating shear thickening fluid in the second fabric layers included in the rear surface, wherein the amount of shear thickening fluid impregnated in the first fabric layers is shear impregnated in the second fabric layers. It is set differently from the impregnation amount of thickening fluid,
The shear thickening fluid is a method for producing a bulletproof material having a shear thickening fluid, characterized in that the impregnated only in the edge portion of the first fabric layer and the second fabric layer. delete The method of claim 8, wherein the impregnation amount of the shear thickening fluid impregnated in the first fabric layers,
Method for producing a bulletproof material having a shear thickening fluid, characterized in that less than the impregnation amount of the shear thickening fluid impregnated in the second fabric layers. The method of claim 8, wherein the impregnation amount of the shear thickening fluid impregnated in the first fabric layers is 3 to 15%, the impregnation amount of the shear thickening fluid impregnated in the second fabric layers is 15 to 30%. Method for producing a bulletproof material having a shear thickening fluid characterized in that. The method of claim 8, wherein the front, center, rear fabric layers,
A method for producing a bulletproof material having a shear thickening fluid comprising any one of aramid fiber, polyethylene fiber, polypropylene fiber, xylon fiber, nylon fiber, glass fiber, carbon fiber. The method of claim 8, wherein the shear thickening fluid comprises a silica sol, and the dispersion medium of the shear thickening fluid includes polyethylene glycol. The method of claim 8, wherein the shear thickening fluid,
A fluid comprising inorganic nanoparticles dispersed in an organic solvent, wherein the inorganic nanoparticles include silicon oxide, aluminum oxide, calcium carbonate, natural mineral particles or mixtures thereof, and the organic solvent includes methanol, ethanol, ethylene glycol, Method for producing a bulletproof material having a shear thickening fluid, characterized in that it comprises at least one of polyethylene glycol.

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