CN218764864U - High-performance soft bulletproof layer composite structure - Google Patents
High-performance soft bulletproof layer composite structure Download PDFInfo
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- CN218764864U CN218764864U CN202220402378.4U CN202220402378U CN218764864U CN 218764864 U CN218764864 U CN 218764864U CN 202220402378 U CN202220402378 U CN 202220402378U CN 218764864 U CN218764864 U CN 218764864U
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Abstract
The utility model discloses a high-performance soft bulletproof layer composite structure, which comprises a bulletproof layer and a shock absorption layer combined with the bulletproof layer, wherein the bulletproof layer comprises a first bulletproof layer, a second bulletproof layer and a third bulletproof layer; a third bullet-proof layer is compounded on the shock absorption layer; the second bulletproof layer is positioned between the first bulletproof layer and the third bulletproof layer; the first bulletproof layer is formed by compounding three layers of polyimide woven fabrics. The utility model discloses a atress condition on each shellproof layer when the analysis bullet penetration, this structure adopt shear thickening liquid and the compound first shellproof layer of polyimide woven fabric as, and the compound shellproof layer of second as of polyimide woven fabric and gumming machine fabric, ultra high molecular weight polyethylene weftless fabric is as third shellproof layer, and the polyethylene material is as the buffer layer. The soft bulletproof layer prepared by the structure has light weight, high performance and strong comfort, and can also be used for safety protection articles such as soft explosion-proof tanks, explosion-proof blankets and the like.
Description
Technical Field
The utility model relates to a protective material technical field, concretely relates to soft bulletproof layer composite construction of high performance.
Background
The body armor is a protective device which can absorb and dissipate bullets and prevent penetration through a bulletproof soft bulletproof layer when effective hit of bullets is encountered, and can effectively protect human bodies. With the development of polymer materials, the selection of soft bulletproof layers of body armor has gradually become diversified from the earliest hard bulletproof soft bulletproof layer to the current soft bulletproof layer. With the re-study of soft ballistic layers, new materials, polyimides, are also beginning to be known gradually. It is used as a special engineering material and has been widely applied to the fields of aviation, aerospace, rocket parts and the like. Polyimide (polyimide) is a novel high-performance high-molecular material which integrates excellent mechanical properties, high and low temperature resistance, chemical and dimensional stability and appears in the 60 th of the 20 th century, is a high-performance organic fiber with excellent comprehensive properties, and is called as the king of plastics. The main reasons for restricting the bulletproof production of polyimide fiber are that the spinning technology is not mature, the industrialization level is low, and the fiber price is high. In the bulletproof performance test of a single-material bulletproof soft bulletproof layer with the same surface density as the fixed phase, polyimide stands out of the way in a large number of fabrics and only lags behind ultra-high molecular weight polyethylene.
At present, a bulletproof soft bulletproof layer mainly uses a fiber reinforced resin matrix composite material as a bulletproof material, the material has large deformation, and after being impacted by a projectile, the back lining of a bullet surface has large concave depth and cannot meet the concave requirement in a bulletproof standard. The currently adopted method for reducing the dent depth of the back lining mainly comprises the steps of adding materials such as foam and PVC plates as buffer layers, so that the dent depth of the back lining is reduced, and the non-penetrating damage to a human body is reduced, but the addition of the materials increases the thickness or the hardness of a sample, so that the flexibility of the bulletproof soft bulletproof layer is reduced, and the anti-dent materials do not have any bulletproof performance, and the weight of the bulletproof garment is additionally increased. The existing bulletproof soft bulletproof layers reduce the wearing comfort of the wearer.
In conclusion, the existing bulletproof material has the defects of poor bulletproof penetration force, poor wearing comfort and poor mechanical properties, and needs to be further improved.
Disclosure of Invention
Therefore, the utility model provides a high performance soft bulletproof layer composite structure.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a high-performance soft bulletproof layer composite structure, which comprises a bulletproof layer and a damping layer combined with the bulletproof layer, wherein the bulletproof layer comprises a first bulletproof layer, a second bulletproof layer and a third bulletproof layer;
a third bullet prevention layer is compounded on the shock absorption layer; the second bulletproof layer is positioned between the first bulletproof layer and the third bulletproof layer;
the first bulletproof layer is formed by compounding three layers of polyimide woven fabrics;
the second bulletproof layer is formed by combining a plurality of polyimide woven fabric superposed layers and a plurality of adhesive polyimide woven fabric superposed layers at intervals;
the third anti-explosion layer is formed by compounding 5-10 layers of PE non-woven cloth.
The utility model discloses an embodiment, the buffer layer is the polyethylene material, the thickness of buffer layer is 3 mm ± 0.5 mm.
In one embodiment of the present invention, in the polyimide woven fabric, the elongation at break of the adopted polyimide fibers is 10 to 20%, the tensile strength is 3.5 to 4.5 cn/dtex, and the linear density of the polyimide fibers is 1.5 to 3 dtex;
the surface density of the polyimide woven fabric is 200g/m 2 The length of the short fiber of the polyimide fiber is 35 to 150 mm.
In one embodiment of the present invention, in the second bulletproof layer, the number of layers of the polyimide woven fabric stacked layer and the adhesive polyimide woven fabric stacked layer is 2 to 6.
In an embodiment of the present invention, the polyimide woven fabric stacking layer is formed by stacking 3 layers of polyimide woven fabrics;
the laminated layer of the adhesive polyimide woven fabric is formed by dipping and combining 3 layers of polyimide woven fabric.
In one embodiment of the utility model, the PE weftless fabric is a double-layer PE weftless fabric with an areal density of 140 g/m 2 。
In one embodiment of the present invention, the polyimide woven fabric has an areal density of 200g/m 2 。
The utility model discloses an in the embodiment, first shellproof layer, second shellproof layer, third shellproof layer and buffer layer are fixed through the four-point fixation method.
The utility model has the advantages of as follows:
the utility model discloses a atress condition on each shellproof layer when analysis bullet penetration, this structure adopt shear thickening liquid and the compounding of polyimide woven fabric as first shellproof layer, and the compounding of polyimide woven fabric and gumming machine fabric is as the shellproof layer of second, and the weftless cloth of ultra high molecular weight polyethylene is as third shellproof layer, and the polyethylene material is as the buffer layer. And finally, fixing the first bulletproof layer, the second bulletproof layer, the third bulletproof layer and the damping layer by four points to obtain a high-performance soft bulletproof layer composite structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and the modification of any structure, the change of proportion relation or the adjustment of size all fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the purpose which can be achieved by the present invention.
Fig. 1 is a schematic view of a composite structure of a high-performance soft bulletproof layer provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second bulletproof layer provided by an embodiment of the present invention;
in the figure: 100-a first ballistic layer; 200-a second ballistic layer; 210-a polyimide woven fabric overlay; 220-gluing a polyimide woven fabric superposed layer; 300-a third bullet prevention layer; 400-shock absorbing layer.
Detailed Description
The present invention is described in detail with reference to the specific embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the utility model provides a soft bulletproof layer composite construction of high performance, composite construction include bulletproof layer and with bulletproof layer combination's shock-absorbing shell 400, shock-absorbing shell 400 is the polyethylene material, the thickness of shock-absorbing shell 400 is 3 mm +/-0.5 mm. Wherein the bulletproof layers comprise a first bulletproof layer 100, a second bulletproof layer 200 and a third bulletproof layer 300; the third bulletproof layer 300 is compounded on the shock absorption layer 400; the second bulletproof layer 200 is positioned between the first bulletproof layer 100 and the third bulletproof layer 300; the first bulletproof layer 100 is formed by compounding three layers of polyimide woven fabrics; the second bulletproof layer 200 is formed by alternately combining a plurality of polyimide woven fabric superposed layers 210 and a plurality of adhesive polyimide woven fabric superposed layers 220; the third bulletproof layer 300 is formed by compounding 5-10 layers of ultra-high molecular weight Polyethylene (PE) laid cloth. The first bulletproof layer 100, the second bulletproof layer 200, the third bulletproof layer 300, and the shock-absorbing layer 400 are fixed by a four-point fixing method.
Specifically, the first bulletproof layer 100 consists of a material with an areal density of 200g/m 2 The polyimide woven fabric is respectively compounded with the shear thickening liquid, and 3 bulletproof layers are formed by laminating. In the polyimide woven fabric, the adopted polyimide fibers have the elongation at break of 10 to 20 percent, the tensile strength of 3.5 to 4.5 cn/dtex and the linear density of 1.5 to 3 dtex; the surface density of the polyimide woven fabric is 200g/m 2 The length of the short fiber of the polyimide fiber is 35 to 150 mm. The shear thickening fluid is mainly composed of silicon dioxide (SiO) 2 ) Mixing with polyethylene glycol (PEG), wherein SiO 2 The content is controlled to be 40% +/-2%. The polyimide woven fabric is soaked in the prepared shear thickening liquid, is uniformly dispersed in the polyimide woven fabric through ultrasonic oscillation, and is dried through a drying box to obtain the shear thickening liquid composite polyimide woven fabric.
In the second bulletproof layer 200 shown in fig. 2, the number of layers of the polyimide woven fabric laminated layer 210 and the adhesive polyimide woven fabric laminated layer 220 is 2 to 6, and the polyimide woven fabric laminated layer 210 and the adhesive polyimide woven fabric laminated layer 220 are alternately laminated. The polyimide woven fabric laminated layer 210 is formed by laminating 3 layers of polyimide woven fabrics; the laminated layer 210 of the polyimide-bonded woven fabric is formed by combining 3 layers of polyimide woven fabric through an adhesive. The utility model discloses an gluing agent is made by gumming liquid, curing agent, toughening agent and polyimide short fiber, and wherein, the gumming liquid is that thermosetting polyimide resin and absolute ethyl alcohol mix for 4:1 according to the mass ratio and forms, and the mass ratio of curing agent and gumming liquid is 0.6 to 1. The curing agent is a water-based epoxy resin curing agent, the toughening agent is one or more of nano silicon dioxide, white silicone powder or nano titanium dioxide, the mass ratio of the toughening agent to the dipping solution is 5 to 8, and the mass ratio of the polyimide short fiber to the dipping solution is 3. The preparation method of the adhesive comprises the following steps: firstly, the polyimide resin is poured into a stainless steel barrel, and then the absolute ethyl alcohol is added, and the mixture is poured and stirred at the same time, so that the polyimide resin can be completely dissolved in the absolute ethyl alcohol. And flatly putting the polyimide woven fabric to be impregnated into a mold filled with the uniformly stirred adhesive, and oscillating the mold filled with the polyimide woven fabric and the adhesive by using a centrifugal vibrator to fully and uniformly impregnate the polyimide woven fabric.
The preparation process of the adhesive polyimide woven fabric laminated layer 220 is as follows: after the single-layer polyimide (0.3 mm +/-0.03 mm) woven fabric is subjected to gum dipping treatment, the polyimide woven fabric is subjected to gum dipping for 1min in the gum dipping treatment process. The adhesive is formed by bonding 3 layers of polyimide woven fabrics after gum dipping through an adhesive, and the bonding process is as follows: placing the three-layer polyimide woven fabric subjected to gum dipping into a mold, and carrying out hot pressing for 5 min to 15 min at the temperature of 120-150 ℃ and under the pressure of 10 MPa to 20 MPa; or under the action of the temperature of 15-25 ℃ and the pressure of 10-20 MPa, cold pressing for 1min-3min to form the adhesive polyimide woven fabric superposed layer 210.
The third bulletproof layer 300 consists of a material with an areal density of 140 g/m 2 The double-layered ultra-high molecular weight Polyethylene (PE) laid fabric of (1) is combined by 10 laminated layers to make the third bulletproof layer 300.
The utility model discloses a composite construction on soft shellproof layer of high performance, this composite construction on soft shellproof layer can improve its barrier propterty under the prerequisite of guaranteeing travelling comfort and weight. The composite structure of the high-performance soft bulletproof layer is prepared by analyzing the penetration characteristics of bullets and selecting latest high-performance fiber material polyimide woven fabric and PE non-woven fabric through a four-point fixing method in the aspect of selecting the bulletproof layer.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A high-performance soft bulletproof layer composite structure, which is characterized in that,
the composite structure comprises a bulletproof layer and a shock absorption layer combined with the bulletproof layer, wherein the bulletproof layer comprises a first bulletproof layer, a second bulletproof layer and a third bulletproof layer;
a third bullet-proof layer is compounded on the shock absorption layer; the second bulletproof layer is positioned between the first bulletproof layer and the third bulletproof layer;
the first bulletproof layer is formed by compounding three layers of polyimide woven fabrics;
the second bulletproof layer is formed by combining a plurality of polyimide woven fabric superposed layers and a plurality of adhesive polyimide woven fabric superposed layers at intervals;
the third waterproof and bulletproof layer is formed by compounding 5-10 layers of PE non-woven cloth.
2. The high performance soft ballistic layer composite structure of claim 1,
the shock attenuation layer is polyethylene material, the thickness of shock attenuation layer is 3 mm + -0.5 mm.
3. The high performance soft ballistic layer composite structure of claim 1,
in the polyimide woven fabric, the adopted polyimide fibers have the elongation at break of 10 to 20 percent, the tensile strength of 3.5 to 4.5 cn/dtex and the linear density of 1.5 to 3 dtex;
the surface density of the polyimide woven fabric is 200g/m 2 The length of the short fiber of the polyimide fiber is 35 to 150 mm.
4. The high performance soft ballistic layer composite structure of claim 1,
in the second bulletproof layer, the number of the polyimide woven fabric laminated layer and the adhesive polyimide woven fabric laminated layer is 2-6.
5. The high performance soft ballistic layer composite structure of claim 1,
the PE weftless fabric is double-layer ultra-high molecular weight polyethylene weftless fabric with the surface density of 140 g/m 2 。
6. The high performance soft ballistic layer composite structure of claim 1 wherein,
the surface density of the polyimide woven fabric is 200g/m 2 。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220402378.4U CN218764864U (en) | 2022-02-24 | 2022-02-24 | High-performance soft bulletproof layer composite structure |
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| CN202220402378.4U CN218764864U (en) | 2022-02-24 | 2022-02-24 | High-performance soft bulletproof layer composite structure |
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