CN216898557U - Body armor with three-dimensional structure - Google Patents

Abstract

The embodiment of the utility model discloses a body armor with a three-dimensional structure, which comprises an outer weftless fabric layer, a woven fabric layer and an inner weftless fabric layer which are sequentially attached from outside to inside, wherein the woven fabric layer is a three-dimensional fabric composite layer formed by compounding multiple layers of fabrics through a thermoplastic resin soaking composite process, the outer layer surface of the outer weftless fabric layer forms a bullet-facing surface, and the inner layer surface of the inner weftless fabric layer forms a body-facing surface. The three-dimensional fabric structure has the characteristics of high modulus, large breaking strength, small breaking elongation, high breaking work and the like, can ensure that the bulletproof performance of the bulletproof garment is greatly improved under the condition that the total mass of the bulletproof garment is not changed, and the woven fabric layer of the three-dimensional fabric structure is subjected to resin composite treatment and then is mixed with aramid fiber non-woven fabric to be used so as to meet the GA68-2019 police stab-resistant garment standard, and greatly enhance the bulletproof and stab-resistant effects of the fabric under the condition that the total mass of the bulletproof garment is not changed.

Description

Bulletproof vest with three-dimensional structure

technical field

The embodiments of the utility model relate to the technical field of bulletproof materials, in particular to a bulletproof vest with a three-dimensional structure.

Background technique

At present, most of the bulletproof vests are mainly soft bulletproof. After using high-performance fibers to make non-weft cloth or woven cloth, a certain number of layers of cloth samples are piled up to achieve bulletproof and stab-proof effect. The woven cloth is mainly made of plain weave. Or Fang Ping's organization is the main one. Plain weave structure, many interlacing points of warp and weft yarns, high structural stability. No weft fabric is a unidirectional non weft fabric in which all the yarns are in a straight state, which can effectively spread the stress and strain caused by the bombardment and improve the energy absorption efficiency. However, the cutting and stitching of the plain weave structure is a weak point that is easily penetrated by projectiles, and the strength and stiffness in the thickness direction are poor, and the plain weave fabric in the back layer is prone to slippage, and the deformation depth is too large, which is not conducive to bulletproof protection. The mechanical properties of the weft-free fabric in the thickness direction are also poor, and delamination is prone to occur.

Utility model content

To this end, the embodiment of the present invention provides a body armor with a three-dimensional structure, so as to solve the problem of poor protection effect of the body armor in the prior art.

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

According to an embodiment of the present utility model, a body armor with a three-dimensional structure is provided, which includes an outer non-weft fabric layer, a woven fabric layer and an inner non-weft fabric layer that are sequentially laminated from the outside to the inside. The woven fabric layer is The three-dimensional three-dimensional fabric composite layer of the multi-layer fabric is formed by the thermoplastic resin infiltration and compounding process, so that the outer layer of the outer weft-free fabric layer constitutes a ballistic surface, and the inner layer of the inner weft-free fabric layer constitutes a close-fitting surface.

Further, the woven fabric layer is composed of three layers of fabrics, including a first warp yarn system and a first weft yarn system, and the first warp yarn system and the first weft yarn system are interwoven to form a layer-by-layer angle interlocking structure.

Further, the first weft yarn system includes a first weft layer, a second weft layer and a third weft layer that are adjacently arranged along the thickness direction of the woven fabric layer, and between the first weft layer and the second weft layer, And the weft yarns between the second weft layer and the third weft layer are respectively staggered, and the first weft layer, the second weft layer and the third weft layer are woven by the warp yarns of the first warp yarn system through the weft yarn system to form Through-type corner interlocking structure.

Further, the woven fabric layer is composed of four layers of fabrics, including an interlining warp yarn system, a second weft yarn system and a second warp yarn system, and the interlining warp yarn system, the second weft yarn system and the second warp yarn system are interwoven to form a layer. Layer Orthogonal Structure.

The woven fabric layer is composed of four layers of fabrics, including a warp lining system, a weft yarn system and a warp yarn system, and the lining warp yarn system, the weft yarn system and the warp yarn system are interwoven to form a layer-by-layer orthogonal structure.

Further, the in-plane of the woven fabric layer is the X direction and the Y direction, the thickness is the Z direction, and the second weft yarn system includes a first weft layer, a second The weft layer, the third weft layer and the fourth weft layer, the weft yarns of the first weft layer, the second weft layer, the third weft layer and the fourth weft layer are all placed orthogonally along the X direction, and the interlining warp yarn system includes interposing warp yarns placed orthogonally in the Y direction between the first and second weft layers, between the second and third weft layers, and between the third and fourth weft layers, and the second Between the weft yarn system and the lining warp yarn system, the warp yarns of the second warp yarn system vertically pass through the second weft yarn system and the lining warp yarn system along the Z direction, and the weft yarns and the lining warp yarns are bundled and woven to form an orthogonal structure.

The embodiment of the present utility model has the following advantages: through the composite-layer bulletproof vest composed of an outer non-weft fabric layer, a woven fabric layer and an inner non-weft fabric layer that are sequentially laminated from the outside to the inside, the woven fabric layer is used as a multi-layer fabric. The three-dimensional fabric composite layer structure composited by thermoplastic resin infiltration and compounding process, based on the three-dimensional three-dimensional fabric structure, has the characteristics of high modulus, high breaking strength, small breaking elongation, and high breaking energy, which can ensure that the total quality of the body armor remains unchanged. Under the circumstance, the anti-ballistic performance of the bulletproof vest is greatly improved, and the woven fabric layer of the three-dimensional fabric structure is mixed with aramid non-woven fabric after resin compound treatment to meet the GA68-2019 police stab-proof clothing standard. Under the condition that the total quality of the garment remains unchanged, the bulletproof and stab-proof effect of the fabric is greatly enhanced, so that the outer non-weft fabric layer on the ballistic side is mainly shear stress, and the inner non-weft fabric layer on the body side is mainly tensile stress.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can also be obtained according to the extension of the drawings provided without creative efforts.

The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the conditions that the present invention can be implemented. The technical substantive significance, the modification of any structure, the change of the proportional relationship or the adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope disclosed in the present utility model. The technical content must be within the scope of coverage.

1 is a schematic diagram of a layer-by-layer structure of a body armor with a three-dimensional structure provided by an embodiment of the present utility model;

FIG. 2 is a schematic structural diagram of a woven fabric layer composite mode 1 of a body armor with a three-dimensional structure provided by an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a second composite method of a woven fabric layer of a bulletproof vest with a three-dimensional structure provided by an embodiment of the present invention.

In the figure: 1. No weft fabric layer outside; 2. Woven fabric layer; 3. No weft fabric layer inside; 4. The first warp yarn system; 5. The first weft yarn system; 6. The interlining warp yarn system; Weft yarn system; 8. Second warp yarn system.

Detailed ways

The embodiments of the present invention are described below by specific embodiments. Those who are familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example

As shown in FIG. 1 , the present invention provides a body armor with a three-dimensional structure, which includes an outer non-weft fabric layer 1 , a woven fabric layer 2 and an inner non-weft fabric layer 3 that are sequentially attached from the outside to the inside. The woven fabric layer 2 is a three-dimensional three-dimensional fabric composite layer formed by multi-layer fabrics through the thermoplastic resin infiltration and compounding process, so that the outer layer of the outer weft-free fabric layer 1 constitutes a ballistic surface, and the inner layer of the inner weft-free fabric layer 3 is formed. Form a snug fit.

As mentioned above, the composite form of the woven fabric layer 2 includes two;

Form 1: As shown in Figure 2, the woven fabric layer 2 is composed of three layers of fabrics, including a first warp yarn system 4 and a first weft yarn system 5, and the first warp yarn system 4 and the first weft yarn system 5 are interwoven to form Layered corner interlocking structure. Specifically, the first weft yarn system 5 includes a first weft layer, a second weft layer and a third weft layer adjacently arranged in the thickness direction of the woven fabric layer 2, between the first weft layer and the second weft layer, and The weft yarns between the second weft layer and the third weft layer are staggered respectively, and the first weft layer, the second weft layer and the third weft layer are woven by the warp yarns of the first warp yarn system 4 through the first weft yarn system 5 , to form a through-type corner interlocking structure. Through this structural arrangement, through the corner interlocking structure formed by the multi-layer three-dimensional fabrics, the thickness of the fabric is increased by using the yarns in the warp and weft directions, so that the fabric has the characteristics of being easily deformed. Among them, in Fig. 2, (1, 2, 3, 4) represent warp yarns, and (①, ②, ③...) represent weft yarns.

Form 2: As shown in Figure 3, the woven fabric layer 2 is composed of four layers of fabrics, including the interlining warp yarn system 6, the second weft yarn system 7 and the second warp yarn system 8, and the interlining warp yarn system 6, the second weft yarn system 7 and the second warp yarn system 8 are interwoven to form a layer-by-layer orthogonal structure. Specifically, the in-plane of the woven fabric layer 2 is the X direction and the Y direction, and the thickness is the Z direction. layer, third weft layer and fourth weft layer. The weft yarns of the first weft layer, the second weft layer, the third weft layer and the fourth weft layer are all placed orthogonally along the X direction. The interlining warp yarn system 6 comprises interlinings placed orthogonally in the Y direction between the first and second weft layers, between the second and third weft layers, and between the third and fourth weft layers Warp yarns, and between the second weft yarn system 7 and the interlining warp yarn system 6, the warp yarns of the second warp yarn system 8 vertically pass through the second weft yarn system 7 and the interlining warp yarn system 6 along the Z direction, and the weft yarns and interlining warp yarns are bundled and woven, to form an orthogonal structure. Through this structural arrangement, through the orthogonal structure composed of multi-layer three-dimensional fabrics, warp and weft yarns are used to increase the thickness of the fabric, so that the fabric has the characteristics of good integrity, compact structure and excellent mechanical properties. Among them, in Fig. 3, (a, b, c) represent interlining warp yarns, (1, 2) represent warp yarns, and (①, ②, ③...) represent weft yarns.

As mentioned above, due to the anisotropy of the three-dimensional fabric, the friction between the yarns is small, and the energy caused by the high-speed impact of the bullet cannot be effectively absorbed and diffused. Its ballistic properties are weaker than other fabrics. Therefore, after weaving the three-dimensional fabric, resin treatment is performed to make a prepreg, or it is immersed in a shear thickening liquid to improve the ballistic performance of the three-dimensional fabric. Specifically, the woven three-dimensional three-dimensional woven fabric is cut into the size of a bulletproof vest chip, and the resin is compounded. The resin matrix used is divided into phenolic resin, epoxy resin, urea-formaldehyde resin, unsaturated resin, etc. The resin used in the fabric is one or more of thermosetting resins. The gluing rate is about 8%-15%. The drying temperature is 120-140 ℃, or immersed in a shear thickening liquid prepared by mixing polyethylene glycol and nano-silica to carry out post-processing of three-dimensional three-dimensional woven fabrics, including three-dimensional three-dimensional woven fabrics and non-woven fabrics. complex.

When the multi-layer body armor is impacted by bullets, the front layer is mainly shear stress, and the rear layer is mainly tensile stress, so the utility model is provided with an outer non-weft fabric layer 1 and a woven fabric that are sequentially attached from the outside to the inside. The composite layer body armor composed of layer 2 and inner non-weft fabric layer 3 uses the woven fabric layer 2 as a three-dimensional three-dimensional fabric composite layer structure that is compounded by multiple layers of fabrics through thermoplastic resin infiltration and compounding process. The characteristics of high volume, high breaking strength, small elongation at break, and high breaking work can ensure that the bulletproof performance of the bulletproof vest can be greatly improved under the condition that the total quality of the bulletproof vest remains unchanged. After resin composite treatment, it is mixed with aramid non-weft fabric to meet the GA68-2019 police stab-proof clothing standard. Under the condition that the total quality of the bulletproof vest remains unchanged, the bulletproof and stab-proof effect of the fabric is greatly enhanced.

Although the present utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the present utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention belong to the protection scope of the present invention.

Claims (5)

1. A bulletproof vest of a three-dimensional structure is characterized in that: the bulletproof vest of the three-dimensional structure comprises an outer non-weft cloth layer, a woven cloth layer and an inner non-weft cloth layer that are sequentially fitted from the outside to the inside, so The woven fabric layer is a three-dimensional three-dimensional fabric composite layer, so that the outer layer of the outer weft-free fabric layer constitutes a resilient surface, and the inner layer of the inner weft-free fabric layer constitutes a body-fitting surface. 2. The body armor with a three-dimensional structure according to claim 1, wherein the woven fabric layer is composed of three layers of fabrics, comprising a first warp yarn system and a first weft yarn system, and the first The warp yarn system and the first weft yarn system are interwoven to form a layer-corner interlocking structure. 3 . The body armor with three-dimensional structure according to claim 2 , wherein the first weft yarn system comprises a first weft layer and a second weft layer which are adjacently arranged along the thickness direction of the woven fabric layer. 4 . and the third weft layer, and the weft yarns between the first weft layer and the second weft layer, and between the second weft layer and the third weft layer are respectively staggered, and the first weft layer, the second weft layer and the third weft layer are respectively staggered. The warp yarns of the first warp yarn system are woven through the weft yarn system between the three weft layers to form a through-type corner interlocking structure. 4 . The body armor with a three-dimensional structure according to claim 1 , wherein the woven fabric layer is composed of four layers of fabrics, including a warp lining system, a second weft yarn system and a second warp yarn system. 5 . , and the interlining warp yarn system, the second weft yarn system and the second warp yarn system are interwoven to form a layer-by-layer orthogonal structure. 5 . The body armor with a three-dimensional structure according to claim 4 , wherein the in-plane of the woven fabric layer is the X direction and the Y direction, and the thickness is the Z direction, and the second weft yarn system comprises: 6 . The first weft layer, the second weft layer, the third weft layer and the fourth weft layer are adjacently arranged in the thickness direction of the woven fabric layer, the first weft layer, the second weft layer, the third weft layer and the third weft layer The weft yarns of the four weft layers are placed orthogonally along the X direction, and the interlayer warp yarn system includes orthogonally placed between the first weft layer and the second weft layer, between the second weft layer and the third weft layer, and the interleaving warp yarns between the third weft layer and the fourth weft layer, and between the second weft yarn system and the interleaving warp yarn system, the warp yarns of the second warp yarn system vertically pass through the second weft yarn system and the interleaving warp yarn system along the Z direction, The weft yarns and lining warp yarns are bundled and woven to form an orthogonal structure.

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