KR102138804B1 - Stab and bullet proof material comprising thermal spray coated para-aramid textile - Google Patents

Abstract

In the present specification, a fabric coated with one or more coating agents selected from the group consisting of metals, metalloids, and carbides thereof, wherein the fabric comprises a para aramid fiber, a ballistic or anti-vibration agent, and a method for manufacturing the same Is disclosed. Bulletproof or sword-proofing agents, which are one aspect of the present invention, are flexible, lightweight, and have excellent wearability when worn by body armor. In addition, the ballistic and anti-vibration performance is excellent, and the ballistic and anti-vibration performance does not deteriorate even when used for a long time. In addition, the bullet-proof or sword-proofing agent has an advantage in that it is easy to manufacture compared to excellent performance.

Description

STAB AND BULLET PROOF MATERIAL COMPRISING THERMAL SPRAY COATED PARA-ARAMID TEXTILE containing a spray-coated para-aramid fabric

Bulletin-proof and anti-vibration agents comprising a spray-coated para-aramid fabric are disclosed herein.

Bullet-proof/break-proof clothing is a kind of clothing developed to protect the human body from bullets, etc., as well as bullet-proof/break-proof performance, a lightweight, flexible, and excellent fit body armor is urgently required to improve wearability and maneuverability.

Conventional bullet-proof/sword-proof fabrics use aramid fibers such as Kevlar, or high-strength polyethylene (HMPE, High Molecular Weight Polyethylene). Among them, high-strength polyethylene, due to the limitation of strength, has a low impact against close-range collisions and ultra-high-speed collisions, and may suffer large deformations when subjected to physical impacts, and is easily ruptured due to heat, and thus has less preference than Kevlar.

Bulletproof/blade proofing materials using aramid fibers are usually prepared by using aramid fibers to produce aramid fabrics, and impregnating the prepared aramid fabrics with various types of polymer resins to produce semi-cured aramid fabrics, semi-cured aramid fabrics It is prepared by laminating several layers in a mold and then curing. In addition, a method of cross-laminating aramid fabric layers and a fabric layer including other fibers is also used, and fabrics comprising aramid and polyethylene fibers are also used.

Such a conventional aramid fiber has a problem in that the weight is increased and the flexibility is poor due to the multi-layer lamination, and thus has a limitation in that satisfactory performance cannot be obtained despite a difficult manufacturing process.

KR 10-2013-0110303 A

In one aspect, it is an object of the present invention to provide a lightweight formulation with excellent bullet and anti-sword effects.

In one aspect, it is an object of the present invention to provide a bullet-proof and anti-blade agent excellent in flexibility.

In one aspect, the object of the present invention is to improve the ballistic and anti-glare effects of aramid fabrics.

In one aspect, it is an object of the present invention to provide a bulletproof and anti-vibration agent for which the bullet-proof and anti-vibration effect is maintained for a long time.

In one aspect, the present invention includes a fabric coated with at least one coating agent selected from the group consisting of metals, metalloids and carbides thereof, the fabric comprising a para aramid fiber, provides a bulletproof or anti-blade agent do.

Bulletproof or sword-proofing agents, which are one aspect of the present invention, are flexible, lightweight, and have excellent wearability when worn by body armor or the like. In addition, the ballistic and anti-vibration performance is excellent, and the ballistic and anti-vibration performance does not deteriorate even when used for a long time. In addition, the bullet-proof or sword-proofing agent has an advantage in that it is easy to manufacture compared to excellent performance.

1 and 2 is a schematic view of the ballistic / anti-vibration material comprising the fabric of the present invention.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention includes a fabric coated with one or more coating agents selected from the group consisting of metals, metalloids and carbides thereof, the fabric comprising para-aramid fibers, bulletproof or anti-sword material to be.

In the present specification, para-aramid fiber is a kind of aramid fiber, and may mean a fiber having a molecular structure in which at least 85% of amide bonds (NHCO-) are bound. Para-aramid may mean poly-para-phenylene-telephthalamide in which the amide bond is bonded to the para position of the benzene ring, and the repeating units are as shown in the figure below.

<Figure 1. Para-aramid repeat structure>

In the present specification, the fabric may mean a fabric of a flat body in which warp and weft yarns are woven crossing each other up and down.

The fabric may include plain weave, twill weave, or runner weave, but is not limited thereto.

In the present specification, a metalloid means an element showing intermediate properties between a metal and a nonmetal. The metalloids include, for example, boron, germanium, arsenic, antimony, tellurium, polonium, and the like.

In one aspect, the metal may include tungsten, but is not limited thereto.

In addition, in the above aspect, the metalloid may include boron (boron).

In addition, in one aspect, the coating agent of the material may include carbides of the metal or metalloid, for example, tungsten carbide or boron carbide, but is not limited thereto.

In one aspect, when coated with the formulation, it is possible to obtain a significantly better bulletproof / anti-glare effect than when using a general shear thickening fluid containing silica and / or silicon dioxide.

In this specification, thermal spraying (thermal spraying), refers to a technology for coating by spraying a coating agent in a solution state using a high temperature heat source such as flame or plasma of 1000°C or higher.

In one aspect, the present invention is excellent in adhesion between the coating agent and the fabric to be coated without using a binder.

When the coating agent to be spray-coated is 100 parts by weight of the fabric, it may be spray-coated to 30 to 500 parts by weight.

The coating agent may be coated with 30 to 400 parts by weight, more preferably 30 to 300 parts by weight, and more preferably 30 to 100 parts by weight.

When the content of the thermal spray coating agent is less than 30 parts by weight based on 100 parts by weight of the fabric, it is impossible to obtain a bulletproof and anti-blade improvement effect, and when it exceeds 500 parts by weight, there is a limit to use as a bulletproof material due to poor lightness and flexibility. have.

The para aramid fiber may include one or more of the following properties:

i) 200 to 1500 denier in thickness;

ii) 22-28 g/d strength.

In one embodiment, the fabric may further include polyimide fibers.

The polyimide fiber may mean an imide-based polymer containing the following repeating units.

<Figure 1. Polyimide repeat structure>

For example, when the warp of the fabric includes para-aramid fibers, the weft yarn may include polyimide fibers, and when the warp yarn of the fabric includes polyimide fibers, the weft yarn may include para-aramid fibers.

In addition, the agent may include one or more of the following properties:

Stab resistance measured according to the NIJ 0115.00.00 standard, E1 value of LEVEL 1 and LEVEL2 is 7 mm or less, and E2 value is 20 mm or less; And

The result of the ballistic test measured according to the NIJ 0101.06 standard is that the rear strain of LEVEL IIIA is 44 mm or less.

In one aspect, the present invention may be a bullet-proof or bullet-proof article comprising the bullet-proof or sword-proofing agent.

The article is not limited, and may include clothing or a helmet, but is not limited thereto.

In one aspect, the bullet-proof or sword-proofing agent may include a product prepared by laminating a spray-coated fabric and a non-spray-coated fabric. In one embodiment, the material may further include a fabric impregnated with para-aramid.

For example, the material is from the upper layer of the material, the warp is aramid, the weft yarn is 1 to 5 ply fabric coated with a polyimide, the uncoated aramid fabric is 3 to 7 ply, the warp is aramid, weft It may include those produced by laminating 16 to 30 plies of para-aramid coated fabric on fabrics made of polyimide.

In one aspect, the spike performance of the material may be further improved when the material further includes an uncoated aramid fabric.

In addition, in one aspect, the present invention comprises the step of coating on the surface of the fabric comprising para-aramid fibers, one or more coating agents selected from the group consisting of the metal, metalloid and carbides thereof It is a manufacturing method of sanctions.

Hereinafter, the present invention will be described through manufacturing examples and examples. The following manufacturing examples and examples are only for explaining the present invention, and should not be interpreted by limiting the scope of the present invention.

[Production example]

From the upper layer of the material, para-aramid and weft yarn are one layer of fabric coated with 50 parts by weight of tungsten, compared to 100 parts by weight of fabric made using polyimide, and para-aramid and weft yarn are fabrics made using polyimide 70 Bulletproof material was prepared by including 1 ply of a tungsten-coated fabric and 5 ply of uncoated aramid fabric.

[Experimental Example 1] Bulletproof / sword performance check

Bulletproof/bladder performance was measured according to the NIJ 0115.00.00 standard and the NIJ 0101.06 standard, respectively.

[Experimental Example 1-1] Confirming the performance difference depending on the presence or absence of thermal spray coating

Manufacturing example (tungsten thermal spray coated fabric of the present invention) Uncoated fabric Tungsten impregnated coated fabric Bulletproof Performance (Level IIIA)
.44 Mag 26mm (rear strain) 35mm (rear strain) 31 mm Sword performance (Level 2) E1 (S1, P1, spike)
E2 (S1, P1, spike) (0, 0, 0)
(0, 11, 0) (0, 5, 0)
(3, 26, 18) (0, 3, 0)
(2, 18, 12)

Source: H.P. White Laboratory, Inc. TEST REPORT

[Experimental Example 1-2] Confirming the performance difference according to the type of thermal spray coating agent

Only the type of the manufacturing example and the thermal spray coating agent were changed, and bulletproof materials were prepared in the same manner as in the manufacturing example.

Tungsten spray coated fabric Boron Spray Coated Fabric Tungsten Carbide Spray Coated Fabric Boron Carbide Spray Coated Fabric Silicon dioxide coated fabric Bulletproof Performance (Level IIIA)
.44 Mag 26mm (rear strain) 27mm (rear strain) 26mm (rear strain) 28mm (rear strain) 32mm (rear strain) Sword performance (Level 2) E1 (S1, P1, spike)
E2 (S1, P1, spike) (0, 0, 0)
(0, 11, 0) (0, 0, 0)
(0, 12, 0) (0, 0, 0)
(0, 11, 0) (0, 0, 0)
(0, 12, 0) (0, 0, 0)
(0, 18, 16)

Source: H.P. White Laboratory, Inc. TEST REPORT

[Experimental Example 1-3] Confirming the performance difference according to the content of the thermal spray coating agent

Content of thermal spray coating (by weight of fabric) 25 parts by weight 30 parts by weight 50 parts by weight 225 parts by weight 400 parts by weight 500 parts by weight 510 parts by weight Bulletproof Performance (Level IIIA)
.44 Mag 31mm (rear strain) 28mm (rear strain) 28mm (rear strain) 26mm (rear strain) 28mm (rear strain) 29mm (rear strain) 31mm (rear strain) Sword performance (Level 2) E1 (S1, P1, spike)
E2 (S1, P1, spike) (0, 0, 0)
(2, 17, 5) (0, 0, 0)
(0, 16, 2) (0, 0, 0)
(0, 15, 2) (0, 0, 0)
(0, 11, 0) (0, 0, 0)
(1, 15, 2) (0, 0, 0)
(1, 15, 1) (0, 0, 0)
(2, 18, 6)

Source: H.P. White Laboratory, Inc. As a result of TEST REPORT, it was found that when the thermal spray coating agent was included in 50 to 500 parts by weight, the bulletproof/proof performance was excellent.

As a result, it was found that when the thermal spray coating agent was included in 30 to 500 parts by weight, the bulletproof/proof performance was excellent.

[Experimental Example 1-4] Check the performance difference according to the fabric manufacturing method

Fabrics were manufactured by varying the types of fibers used in fabric production, and ballistic performance was tested.

When using a fabric composed of only para-aramid When using fabrics made from para-aramid and polyimide When made of para-aramid yarn Bulletproof performance 26mm (rear strain) 23mm (rear strain) 33mm (rear strain) Sword performance (0, 0, 0) (0, 11, 0) (0, 0, 0)
(0, 7, 0) (0, 0, 0)
(5, 18, 3)

Source: H.P. White Laboratory, Inc. TEST REPORT

Claims (12)

And a textile coated with at least one coating agent selected from the group consisting of metals, metalloids and carbides thereof,
The coating agent, when the fabric is 100 parts by weight, is a thermal spray coating to 30 to 500 parts by weight,
The fabric comprises a para aramid fiber, bulletproof or anti-blade agent. According to claim 1,
The metal includes tungsten,
The metal carbide comprises tungsten carbide, bulletproof or anti-swording agents. According to claim 1,
The metalloids include boron,
The quasi-metal carbide comprises boron carbide, a bullet-proof or anti-sword preparation. delete According to claim 1,
The para-aramid fiber comprises at least one of the following properties, bulletproof or anti-blade agent:
i) 200 to 1500 denier in thickness;
ii) 22-28 g/d strength. According to claim 1,
The fabric,
A bullet-proof or anti-blade agent comprising a fabric further comprising polyimide fibers. The method of claim 6,
The fabric,
When the warp yarns include para-aramid fibers, the weft yarns include polyimide fibers,
When the warp yarn comprises polyimide fiber, the weft yarn comprises para-aramid fiber, a bullet-proof or sword-proofing agent. delete According to claim 1,
The bullet-proof or sword-proofing agent includes one or more of the following properties, a bullet-proof or blade-proofing agent:
Stab resistance measured according to the NIJ 0115.00.00 standard has an E1 value of 7 mm or less in LEVEL 1 and LEVEL 2, and an E2 value of 20 mm or less; And
The result of the ballistic test measured according to the NIJ 0101.06 standard is that the rear strain of LEVEL IIIA is 44 mm or less. A bullet-proof or anti-glare article comprising the anti-ballistic or anti-glare agent according to any one of claims 1 to 3, 5 to 7, and 9. The method of claim 10,
The article is bulletproof or anti-glare article, including clothing or helmet. delete

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