KR101751338B1 - The method for shield having bullet-proof and knife-proof function simultaneously - Google Patents

Abstract

The present invention relates to a method for producing a shield having both bulletproof and defective functions. More specifically, a bulky film layer is formed to laminate a bulletproof and detacked material to a predetermined thickness and to enhance adhesive force between materials, or nanoparticles containing silica and carbon nanotubes (CNT) The present invention also relates to a method of manufacturing a shield having both a bulletproof and a detaching function capable of maintaining a proper weight while enhancing the detaching performance.
To this end, the present invention relates to a method of manufacturing an anti-fogging and anti-fogging material comprising the steps of: (a) preparing a material for anti-bulletproof and anti-fogging materials containing polyethylene and polyamide fibers; (b) cutting according to the shape and size of the shield; (c) a step of laminating the cut material after the step (b) a plurality of times; (d) The result of step (c) is placed on the side of the iron plate formed by arcuate curves using an autoclave, followed by vacuuming by attaching a film for vacuum forming, or by using a press machine, A step of stacking a material on the upper side of the shield-like mold and pressing the material up and down; (e) a step of taking out the result of the step (d) and cutting a part of the surface to form a window for securing the view; (f) fixing the bracket using a polycarbonate film or an aramid fabric along the edge of the window; And (g) a step of (f) a step of painting, applying an elastic band member to the rim, and attaching a knob to the rear surface.

Description

[0001] The present invention relates to a method of manufacturing a shield having a bullet-proof function and a bullet proof function,

The present invention relates to a method for producing a shield having both bulletproof and defective functions. More specifically, a bulky film layer may be formed to laminate bulletproof and anti-fogging materials to a predetermined thickness and to enhance adhesion between materials, or nanoparticles containing silica and carbon nanotubes (CNT) The present invention also relates to a method of manufacturing a shield having both a bulletproof and a detaching function capable of maintaining a proper weight while enhancing the detaching performance.

The main purpose of the existing protest shields is to defend them from demonstration tools, and it is almost impossible to defend against weapons or firearms.

On the other hand, Korean Patent Registration No. 0644432 (registered on November 2, 2006) and a shield for suppressing demonstration (hereinafter referred to as prior art) are disclosed. Background Art [0002] The prior art is provided with a protection plate which is made of transparent or translucent material and which is bent at the upper and lower sides, a protection plate which is installed on the back surface of the protection plate and which absorbs external impact when the protest is exerted, And a buffer groove is formed on the rear surface of the arm, and an arm supporting groove for supporting the arm is formed on the rear surface. The protection plate is made of polycarbonate (PC) material.

As described above, the conventional shield for suppression is mainly made of a transparent shield made of a PC material. The shield is advantageous in that it has excellent appearance, good weight and light weight, and high mobility and usability. However, when a physical impact from the outside is repeated, There is a problem in robustness.

In addition, metals and ceramics, which are used as typical bulletproof materials, have a high weight ratio to the bulletproof performance, so there are many limitations for personal carrying, corrosion is good and abrasion is large, life is short compared with fiber materials, .

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method for forming a binder film layer in order to laminate a bullet- It is an object of the present invention to provide a method for manufacturing a shield having both a bulletproof and a defective function for selectively processing nanoparticles containing carbon nanotubes (CNTs), thereby enhancing the deterioration performance and maintaining an appropriate weight.

In order to achieve the above object, a method of manufacturing a shield having both a bulletproof and a detaching function according to the present invention includes the steps of: (a) preparing a material for anti-bullet and anti-detonation materials comprising polyethylene and polyamide fibers; (b) cutting according to the shape and size of the shield; (c) a step of laminating the cut material after the step (b) a plurality of times; (d) The result of step (c) is placed on the side of the iron plate formed by arcuate curves using an autoclave, followed by vacuuming by attaching a film for vacuum forming, or by using a press machine, A step of stacking a material on the upper side of the shield-like mold and pressing the material up and down; (e) a step of taking out the result of the step (d) and cutting a part of the surface to form a window for securing the view; (f) fixing the bracket using a polycarbonate film or an aramid fabric along the edge of the window; And (g) after the step (f), a step of painting, applying an elastic band member to the rim, and attaching a handle to the rear surface.

The step (c) may further include the step of (c1) attaching a binder film, which is a thermoplastic film, between the materials so as to enhance the bonding force between the material layers.

The material used in the step (a) is a hybrid of UHMWPE UD (ultra high molecular UD), UHMWPE UD (ultra high molecular UD) fiber, which is one of polyethylene fibers, and aramid fiber, which is one of polyamide fibers A composite fabric, and a composite fabric.

According to the present invention, a binder film layer is formed to laminate a material to a predetermined thickness so as to simultaneously impart a bulletproof and defective function, and to strengthen adhesive force between materials, and silica and carbon nanotubes (CNT) are included in the material It is possible to fabricate a shield that can enhance the bulletproof and detergent performance by treating the nanoparticles and maintain the proper weight.

Further, according to the present invention, particularly, the binder film formed between the two materials and the nanoparticles contained in the material have the effect of increasing the weight and thickness increase and increasing the tensile strength.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of a method of manufacturing a shield having a bulletproof and defective function according to a preferred embodiment of the present invention;
FIG. 2 is a graph showing a graph according to a tensile strength measurement result,
Fig. 3 is a table showing impact energy level criterion in the erasure test, and Fig.
FIGS. 4 to 6 show test analysis results obtained by performing a test and a bulletproof test of a shield manufactured by a method of manufacturing a shield having both a bulletproof and a detonation function according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 1 is a flow chart of a method of manufacturing a shield having both a bulletproof and defective function according to a preferred embodiment of the present invention, FIG. 2 is a graph showing a tensile strength measurement result, and FIG. FIGS. 4 to 6 are graphs showing energy level standards, and FIG. 4 to FIG. 6 are graphs showing the results of test analysis obtained by performing a test and a bulletproof test of a shield manufactured by the method of manufacturing a shield having both bulletproof and bulletproof functions according to a preferred embodiment of the present invention FIG.

1 to 6, a method of manufacturing a shield having both a bulletproof and a defective function according to a preferred embodiment of the present invention includes a material preparing step S100, a cutting step S110, a material stacking step S120, (S130), a transparent window cutting process (S140), a PC film and bracket fixing process (S150), and an elastic strip and a handle attaching process (S160).

The material preparing step (S100) is a step of preparing a bulletproof and detacked material.

At this time, nanoparticles containing silica and carbon nanotubes (CNTs) may be further processed in the material. (S122) When nanoparticles containing silica and carbon nanotubes are treated in the material, The effect of increasing the thickness is increased.

In particular, when only a single material selected from among polyethylene-based fibers including UHMWPE UD (ultra-high molecular weight UD or PE UD) is used, nanoparticles containing silica and carbon nanotubes (CNT) can be treated on the material .

The nanoparticles can be coated on the fabric by spraying silica particles with methanol in an amount of 10% by weight, and the water-dispersed solution containing 3% by weight of CNT can be coated on the fabric.

Here, the content ratio is not limited.

The cutting process (S110) is a composite process of hybridizing a UHMWPE UD (ultra high molecular UD or PE UD) or UHMWPE UD (ultra high molecular UD or PE UD) fiber, which is a kind of polyethylene fiber, with an aramid fiber, And cutting the fabric according to the shape and size of the shield using any one of materials including fabric.

Here, the UDMWPE UD material can be used alone, but a heterogeneous material mixed with the UHMWPE material and the aramid material can be used. Particularly, when a different kind of material is used, it is possible to further reduce the physical impact from the outside.

Here, the fabric used as the material may be either unidirectional or oriented in multiple axes of biaxial or more.

In addition, a form impregnated with a prepreg, which is an intermediate base material for a fiber-reinforced composite material, may also be used.

For example, in place of polyethylene fibers, aramid yarns, which are polyamide fibers, are oriented in the directions of biaxial directions of + 45 °, -45 °, 0 °, and + 45 ° and blended with phenol resin and PVB A multi-axis fabric prepreg with a film attached thereto may be used. The prepreg is prepared by impregnating at least one selected from phenol resin, PVB, and methanol in a predetermined ratio.

The material stacking step (S120) is a step of laminating the fabric cut in the cutting step (S110) a plurality of times. At this time, the total thickness of the laminated material is preferably 5 mm or more, and a bulletproof function can be realized when the thickness is 5 mm or more. Further, when the total thickness of the laminated material is 10 mm or more, the function of deflation and bulletproofing can be realized at the same time.

When the thickness is 10 mm or less, nanoparticles containing polycarbonate film, aramid fabric, prepreg, silica, and carbon nanotube (CNT) mentioned above are treated to form a protective and bullet proofing function To be implemented simultaneously.

Though the thickness of the laminated material is thicker, the anti-fogging and bulletproofing function is strengthened. However, since the weight of the laminated material is large, the activity of the laminated material deteriorates. Therefore, it is preferable to manufacture the laminate within the range of 5 mm to 10 mm.

When the polyethylene-based fiber and the polyamide-based fiber are mixed and laminated, a binder film that is a thermoplastic film can be treated between the materials.

At this time, a binder film layer forming step (S122), which is a thermoplastic film, may further be included between the materials to improve the ablation performance and enhance the interlayer bonding force with the base material.

In the binder film layer forming step (S122), a binder film, which is a thermoplastic film, is adhered to the material between the materials in order to strengthen the bonding force between the material layers.

In the binder film layer forming step (S122), it is possible to perform bonding between materials even by a pressing process using a press without any adhesive material between the same materials like PE UD-PE UD, but there is a separate adhesive material between PE materials such as PE UD-aramid , And mutual adhesion is possible. Therefore, in step S122, a binder film layer is formed between the materials to enhance the adhesive force between the different materials.

Here, the binder film is a binder used for reinforcing the bonding strength of the materials for anti-bullet and anti-glare, and is a bonding body which is applied by applying heat and dissolving it in the form of a fluid.

The binder film used in the binder film layer forming step (S122) may be EVA, polyacrylic, polyolefin, polyester, polyurethane or the like.

Here, the polyurethane-based binder film is not easily peeled off even after bonding, and the effect of increasing the tensile strength is the highest, and it is most preferable to use a polyurethane-based binder film.

In the material stacking step (S120), a plurality of materials are stacked on one another by a device, and a vacuum molding method using an autoclave and a pressing method using a press machine under high temperature and high pressure are used. Any one of molding methods can be used.

More specifically, in the case of using the autoclave method in the pressing step (S130), the resultant laminated in the material stacking step is placed on the side of the iron plate formed by the arcuate curve, and a vacuum working is performed by attaching a film for vacuum forming.

When a press machine is used in the pressing step (S130), the workpiece is placed on a workbench, and then the material is stacked on the upper side of the shield-like mold, and then the upper and lower presses are pressed.

After the binder film layer is formed, preheating and pressing are performed for 3 minutes / 5 minutes respectively.

At this time, it is preferable that the polyethylene-based material is performed at a press temperature of 120 degrees or more and 130 degrees or less, and the polyamide material is preferably performed at a press temperature of 120 degrees or more and 150 degrees or less.

If the temperature range is not satisfied, the adhesive force of the binder film layer may be weakened or the material may melt.

The cooling step (S140) is a step of cooling at room temperature after the pressing step (S130).

The transparent window cutting step S150 is a step of taking out the result of the pressing step S130 and cutting a part of the surface to form a window having a predetermined shape.

The reason why the transparent window is formed in the transparent window cutting step (S150) is to secure the view of the user from the front.

The PC film and bracket fixing process (S160) is a process of fixing a film and a bracket formed of a PC (Polycarbonate) material along the edge of the window after the transparent window cutting process (S150). For example, the window may be made of a mixture of PC film and acrylic in a thickness of 22 mm to 34 mm. Here, the thickness is not limited.

The elastic band and the handle attaching step (S170) is a step of painting a surface, attaching an elastic band member to the rim, and attaching a handle to the rear surface. Here, it is preferable that the handle is formed to be symmetrical to both sides of the rear surface of the shield.

<Tensile strength comparison test>

Table 1 below shows the changes in weight and thickness after applying silica and carbon nanotube nanoparticles to a UD fabric, which is a type of polyethylene fiber, and an XP fabric, a polyamide fiber, and the tensile strength before and after the nanoparticle treatment .

Table 1 shows the increase in weight and thickness when the binder film and the nanoparticles were treated in comparison with the two nonwoven fabrics.

Sample Weight increase rate Thickness increase rate UD1 22.80% 19.40% UD1-C 22.68% 18.11% UD1-S 39.88% 60.05% UD2 25.56% 18.82% UD2-C 27.80% 24.85% UD2-S 53.04% 63.82%

[Table 1] shows that even when the binder film alone is bonded or CNT is coated, the width of the increase is larger than that of the binder film, but the width and width of the binder film are increased. Can be confirmed.

Fig. 2 shows a graph according to the tensile strength measurement result.

UD 1-C is a binder film and a carbon nanotube (CNT) -treated group, and UD 1-S is a group in which UD 1-C is a binder film. A binder film, and a group treated with silica.

As a result of the measurement of the tensile strength, it was confirmed that the tensile strength of the group treated with the binder film and the nanoparticles containing the carbon nanotube (CNT) and silica was increased compared to the group not treated with the material.

In addition, it can be seen that the tensile strength increases when CNT or silica is treated, as compared with the case where only the binder film is bonded. This is because the particles increase the tensile strength by forming frictional force on the surface of the fabric.

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Hereinafter, it is shown that the degree of blocking the test specimen at the reference impact energy level (Strike Energy Level) is tested using a standard sword of an engineered knife blades (S1, P1) and a spike (Engineered Spike).

FIG. 3 is a table showing impact energy level standards in the erasure test.

The level of protection and bulletproof protection was measured by using the above three swords based on E2 of Level 2, a conventional safety shield, UHMWPE UD (UHMWPE UD) which is a type of polyethylene fiber, UHMWPE UD and aramid fibers The test was conducted.

Referring to FIG. 4, the result of testing the bulletproof performance when the thickness of the laminated material is 5 mm or more, and when the thickness is 5 mm or more, the spike test can not be passed.

Fig. 5 shows the result of three tests of a double-edged sword (S1), a single flap (P1) and a spike at a thickness of 9.15 mm (comparison group). I did not.

FIG. 6 shows that both thicknesses of the double-edged blade S1, the double-edged blade P1, and the spikes have passed when the thickness is 10.90 mm.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

S100 - Material preparation process
S110 - Cutting process
S112 - Nanoparticle treatment process
S120 - Material Stacking Process
S122 - Binder film layer forming process
S130 - Compression process
S140 - Cooling process
S150 - Transparent window cutting process
S160 - PC film and bracket fixing process
S170 - Elastic strip and knob attaching process

Claims (3)

(a) a material preparation process for preparing a bulletproof and antistatic material containing polyethylene-based and polyamide-based fibers;
(b) cutting according to the shape and size of the shield;
(c) a step of laminating the cut material after the step (b) a plurality of times;
(d) The result of step (c) is placed on the side of the iron plate formed by arcuate curves using an autoclave, followed by vacuuming by attaching a film for vacuum forming, or by using a press machine, A step of stacking a material on the upper side of the shield-like mold and pressing the material up and down;
(e) a step of taking out the result of the step (d) and cutting a part of the surface to form a window for securing the view;
(f) fixing the bracket using a polycarbonate film or an aramid fabric along the edge of the window; And
(g) After the step (f), a step of painting, applying an elastic band member to the rim, and attaching a handle to the rear surface
/ RTI &gt;
(c)
(c1) a step of attaching a binder film as a thermoplastic film between the materials so as to enhance the bonding force between the material layers
Further comprising:
The material used in the step (a) is
(Super high density polyethylene) fiber which is one of polyethylene fibers and a composite fabric which is a hybrid of aramid fibers which are one of unidirectional ultrahigh molecular weight (ultra high density) polyethylene fibers and polyamide fibers And a second group,
Wherein the fabric used as the material is formed in a unidirectional or multi-axis orientation more than biaxial,
In step (a)
Nanoparticle additives with silica and carbon nanotubes (CNTs) can be further processed in the material,
wherein the total thickness of the laminated material in the step (c) is 5 mm to 10 mm or more.


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