CN117656627A - Soft bulletproof stab-resistant liner and preparation method thereof - Google Patents
Soft bulletproof stab-resistant liner and preparation method thereof Download PDFInfo
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- CN117656627A CN117656627A CN202311634392.2A CN202311634392A CN117656627A CN 117656627 A CN117656627 A CN 117656627A CN 202311634392 A CN202311634392 A CN 202311634392A CN 117656627 A CN117656627 A CN 117656627A
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- ultra
- molecular weight
- high molecular
- polyethylene film
- weight polyethylene
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 63
- 239000002131 composite material Substances 0.000 claims abstract description 50
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 49
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 49
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 238000013329 compounding Methods 0.000 claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 12
- 238000007731 hot pressing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 239000012634 fragment Substances 0.000 abstract description 4
- 230000007123 defense Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 abstract description 2
- 150000001875 compounds Chemical group 0.000 description 8
- 239000003292 glue Substances 0.000 description 3
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- Laminated Bodies (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention provides a soft bulletproof stab-resistant liner and a preparation method thereof, wherein the liner is structurally provided with a composite unit, the composite unit sequentially comprises a composite layer, ultra-high molecular weight polyethylene fiber non-woven cloth and a composite layer from inside to outside, the composite layer is formed by hot-pressing and compounding an upper layer of polyethylene film, a lower layer of polyethylene film and a middle composite cloth, the composite cloth is formed by alternately superposing and compounding a plurality of layers of ultra-high molecular weight polyethylene film non-woven cloth according to a specific angle, and the specific angle comprises one or more than one of directions of 0 DEG, 90 DEG, 45 DEG and 135 DEG. The invention can meet the stab-resistant performance requirement of GA 68-2019A class stab-resistant clothes of police stab-resistant clothes within 16mm in thickness, and reach the GA 141-2010 3 class bulletproof standard of police stab-resistant clothes, and the areal density is within 7.5 kg/square meter under the condition that the V50 value of the standard simulation fragment of defense 1.1 g is not less than 700 m/s.
Description
Technical Field
The invention relates to the technical field of bulletproof equipment, in particular to a soft bulletproof stab-resistant liner and a preparation method thereof.
Background
Body armor and stab-resistant clothing are important human body protective equipment, and the excellent protective performance of the body armor and stab-resistant clothing can ensure the life safety of law enforcement personnel such as police officers, customs and the like. Because the bulletproof mechanism of the material is different from the stab-proof mechanism, the stab-proof performance of the light bulletproof clothes in the existing equipment products is not ideal, the corresponding stab-proof standard cannot be met, and the stab-proof products have insufficient stab-proof performance. But law enforcement officers such as police officers, customs officers and the like face various threats, and meanwhile, the flexibility and the comfortableness of users are affected by wearing bulletproof clothes and stab-resistant clothes. Soft, light and comfortable bulletproof stab-resistant clothes with elastic resistance and good stab-resistant performance have important significance for safety assurance of law enforcement authorities in China.
The bulletproof material mainly depends on tensile fracture strength, and energy of high-speed impact warheads is dissipated through the process of stretching/breaking the material; the anti-stab of the material depends on the shearing strength, and the sharp devices such as the cutter and the like are deformed through the shearing process of the material so as to resist low-speed attack. Because the mechanism of the bulletproof and stab-proof materials is different and even has certain contradiction, the prior bulletproof stab-proof liner is formed by alternately combining metal, aramid woven cloth gum dipping, aramid weft-free cloth, ultra-high molecular weight polyethylene fiber weft-free cloth and the like, and the requirements of stab-proof performance of the A-class stab-proof clothes with the thickness of less than 16mm and reaching GA 68-2019 ' police stab-proof clothes ' A-class bulletproof performance and the products with GA 141-2010 ' police stab-proof clothes ' 3-class bulletproof standard and 1.1 g standard defense simulation fragment V50 value of not less than 700 m/s are all required to have the surface density of more than 8kg /'m/s and can not meet the requirement of light weight.
Disclosure of Invention
Aiming at the situation that the area of the soft bulletproof stab-resistant liner is large, the invention provides the soft bulletproof stab-resistant liner and a preparation method thereof.
In order to achieve the above purpose, the invention provides a soft bulletproof stab-resistant liner, wherein the liner structure is provided with a composite unit, the composite unit sequentially comprises a composite layer, ultra-high molecular weight polyethylene fiber non-woven cloth and a composite layer from inside to outside, the composite layer is formed by hot-pressing and compounding an upper layer of polyethylene film, a lower layer of polyethylene film and a middle composite cloth, the composite cloth is formed by alternately superposing and compounding a plurality of ultra-high molecular weight polyethylene film non-woven cloth according to a specific angle, and the specific angle comprises one or more of 0 degree, 90 degree, 45 degree and 135 degree directions.
Preferably, the specific angles of each layer of ultra-high molecular weight polyethylene film laid cloth are sequentially selected in a circulating way according to the sequence of 0 DEG, 90 DEG, 45 DEG and 135 DEG.
Preferably, the plurality of ultra-high molecular weight polyethylene film weftless fabrics are at least 4 layers of ultra-high molecular weight polyethylene film weftless fabrics.
Preferably, the specific angles of the 4-layer ultra-high molecular weight polyethylene film laid cloth are 0 °, 90 °, 45 ° and 135 °, respectively.
Preferably, the specific angles of the two adjacent layers of ultra-high molecular weight polyethylene film laid cloths are different.
Preferably, the specific angles of the two adjacent layers of ultra-high molecular weight polyethylene film laid cloth are respectively adjacent two angles in the directions of 0 degrees, 90 degrees, 45 degrees and 135 degrees.
The invention also provides a preparation method for preparing the soft bulletproof stab-resistant liner, which comprises the following steps,
(1) Preparing composite cloth: a plurality of layers of ultra-high molecular weight polyethylene film weftless fabric are subjected to unidirectional gluing fiber layer staggered superposition according to a set specific angle, and a layer of material is formed by hot-pressing and compounding, wherein the compounding process comprises the following steps: preserving heat and pressure for 5-10min at 100-120 ℃ and 5 MPa;
(2) Respectively compounding a layer of polyethylene film on the upper part and the lower part of the composite cloth material in the step (1), wherein the thickness of the polyethylene film is 0.005-0.03mm, so as to form a material composite layer;
(3) Combination: and combining the obtained composite layer with conventional ultra-high molecular weight polyethylene fiber weft-free cloth.
Preferably, the combination is an ultra-high molecular weight polyethylene film laid fabric combination of 1-3 kg/square meter.
Preferably, the combination is as follows: the composite layer is added with 1-3 kg/square meter and the ultra-high molecular weight polyethylene fiber laid fabric is added with the composite material. .
The beneficial effects of the invention are as follows:
the invention improves the strength of the material by adopting special treatment of the ultra-high molecular weight polyethylene film laid cloth and the ultra-high molecular weight polyethylene fiber laid cloth, and reduces the surface density to within 7.5 kg/square meter while meeting the elastic resistance, the stab resistance and the breakage resistance.
Drawings
FIG. 1 is a schematic view of a specific angle composite of a plurality of layers of ultra-high molecular weight polyethylene films of the invention;
fig. 2 is a schematic diagram of a composite layer structure of a soft bulletproof stab-resistant liner according to the present invention.
Detailed Description
For a better description of the objects, technical solutions and advantages of the present invention, the present application will be further described with reference to the specific examples below.
Example 1
In the embodiment, the soft bulletproof stab-resistant liner is prepared by using the ultra-high molecular weight polyethylene film weft-free cloth, and the performance of the soft bulletproof stab-resistant liner is improved by adjusting the angle of the glue-coated fiber layer of the partial-layer ultra-high molecular weight polyethylene film weft-free cloth. Specifically, in this embodiment, a soft bulletproof stab-resistant liner, the liner structure sets up the compound unit, and the compound unit sets up at least 1 layer, the compound unit includes compound cloth, ultra-high molecular weight polyethylene film weftless fabric and compound cloth from inside to outside in proper order, the compound layer is upper and lower two-layer polyethylene film and middle compound cloth hot pressing complex, compound cloth includes a plurality of layers ultra-high molecular weight polyethylene film weftless fabric, and a plurality of ultra-high molecular weight polyethylene film weftless fabric is overlapped the complex by unidirectional glue coating fibrous layer is crisscross according to specific angle, and specific angle includes one or several of 0 °, 90 °, 45 °, 135 ° direction. Preferably, the specific angles of the non-woven cloth of each layer of the ultra-high molecular weight polyethylene film are sequentially and circularly selected according to the sequence of 0 degree, 90 degree, 45 degree and 135 degree (as shown in figure 1) or 135 degree, 45 degree, 90 degree and 0 degree, so that each layer of composite layer is staggered and mutually supported, for example, the non-woven cloth of a plurality of layers of ultra-high molecular weight polyethylene films is at least 4 layers of non-woven cloth of ultra-high molecular weight polyethylene films, and the specific angles of the non-woven cloth of the 4 layers of ultra-high molecular weight polyethylene films are 0 degree, 90 degree, 45 degree and 135 degree respectively.
In the composite layer structure, the specific angles of the two adjacent layers of ultra-high molecular weight polyethylene film weftless fabrics are different, and the specific angles of the two adjacent layers of ultra-high molecular weight polyethylene film weftless fabrics are respectively adjacent angles in the directions of 0 DEG, 90 DEG, 45 DEG and 135 deg.
The preparation method for the soft bulletproof stab-resistant liner comprises the following specific steps:
1. preparing composite cloth: 4 layers of ultra-high molecular weight polyethylene film weftless fabrics are respectively formed by alternately superposing and compositing unidirectional glue-coated fiber layers according to the directions of 0 DEG, 90 DEG, 45 DEG and 135 DEG to form composite fabrics of a layer of material, and a flat vulcanizing machine is adopted during compositing, and the composite fabrics are subjected to heat preservation and pressure maintaining for 5-10min under the conditions of 100-120 DEG and 5 MPa.
2. Preparing an ultra-high molecular weight polyethylene film composite layer: and compounding the other two layers of ultra-high molecular weight polyethylene fiber non-woven cloth on the upper composite cloth by a hot-pressing compounding technology, wherein the thickness of the polyethylene film is 0.005-0.03mm, so as to form a material composite layer. The composite layer structure and the hot-pressing composite treatment can effectively improve the stab-resistant performance of the ultra-high molecular weight polyethylene film laid cloth, and simultaneously retain the elastic resistance and the capability of preventing fragments.
3. Preparing a bulletproof layer: and combining the obtained material composite layer with a conventional ultra-high molecular weight polyethylene fiber laid fabric. The combination mode is as follows: ultra-high molecular weight polyethylene film composite layer, ultra-high molecular weight polyethylene fiber weft-free cloth and ultra-high molecular weight polyethylene film composite layer, and the surface density combination ratio of each layer: (0-30%): (0-30%): (0-30%) kg/m 2 。
Through the processing and the combination mode, the stab-resistant performance requirement of GA 68-2019 class A stab-resistant clothes of police stab-resistant clothes can be met within 16mm in thickness, the grade 3 bulletproof standard of GA 141-2010 class 3 bulletproof clothes of police stab-resistant clothes is met, and the areal density is within 7.5 kg/square meter under the condition that the V50 value of the simulated fragment of the standard 1.1 gram is not less than 700 m/s.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. A soft bulletproof stab-resistant liner is characterized in that: the inner container structure is provided with a composite unit, the composite unit sequentially comprises a composite layer, ultra-high molecular weight polyethylene fiber non-woven cloth and a composite layer from inside to outside, the composite layer is formed by compounding an upper polyethylene film layer, a lower polyethylene film layer and a middle composite cloth in a hot pressing mode, the composite cloth is formed by alternately superposing and compounding a plurality of ultra-high molecular weight polyethylene film non-woven cloths according to a specific angle, and the specific angle comprises one or more of 0 degree, 90 degree, 45 degree and 135 degree directions.
2. The soft ballistic and stab resistant liner of claim 1, wherein: the specific angles of the non-woven cloth of each layer of ultra-high molecular weight polyethylene film are sequentially circulated in the sequence of 0 DEG, 90 DEG, 45 DEG and 135 DEG.
3. The soft ballistic and stab resistant liner of claim 1, wherein: the plurality of ultra-high molecular weight polyethylene film weftless fabrics are at least 4 layers of ultra-high molecular weight polyethylene film weftless fabrics.
4. A soft ballistic and stab resistant liner according to claim 3, wherein: specific angles of the 4 layers of ultra-high molecular weight polyethylene film weftless fabric are 0 degrees, 90 degrees, 45 degrees and 135 degrees respectively.
5. The soft ballistic and stab resistant liner of claim 1, wherein: the specific angles of the two adjacent layers of ultra-high molecular weight polyethylene film weftless fabrics are different.
6. The soft ballistic and stab resistant liner of claim 5, wherein: the specific angles of the two adjacent layers of ultra-high molecular weight polyethylene film weftless fabrics are respectively adjacent two angles in the directions of 0 DEG, 90 DEG, 45 DEG and 135 deg.
7. A method for preparing the soft bulletproof stab-resistant liner according to any one of claims 1 to 6, which is characterized in that: comprises the steps of,
(1) Preparing composite cloth: a plurality of layers of ultra-high molecular weight polyethylene film weftless fabrics are subjected to unidirectional gluing fiber layer staggered superposition according to a set specific angle, hot pressing and compounding are carried out to form a layer of material, a flat vulcanizing machine is adopted during compounding, and the heat preservation and the pressure maintaining are carried out for 5-10min under the conditions of 100-120 ℃ and 5 MPa;
(2) Compounding a layer of polyethylene film on the upper and lower sides of the composite cloth material in the step (1) by a hot-pressing compounding technology, wherein the thickness of the polyethylene film is 0.005-0.03mm, so as to form a material composite layer;
(3) Combination: and combining the obtained composite layer with conventional ultra-high molecular weight polyethylene fiber weft-free cloth.
8. The method for preparing the composite layer structure of the soft bulletproof stab-resistant liner according to claim 7, which is characterized in that: the combination adopts an ultra-high molecular weight polyethylene film laid fabric combination of 1-3 kg/square meter.
9. The method for preparing the composite layer structure of the soft bulletproof stab-resistant liner according to claim 7, which is characterized in that: the combination is as follows: the composite layer is added with 1-3 kg/square meter and the ultra-high molecular weight polyethylene fiber laid fabric is added with the composite layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311634392.2A CN117656627A (en) | 2023-12-01 | 2023-12-01 | Soft bulletproof stab-resistant liner and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311634392.2A CN117656627A (en) | 2023-12-01 | 2023-12-01 | Soft bulletproof stab-resistant liner and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117656627A true CN117656627A (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311634392.2A Pending CN117656627A (en) | 2023-12-01 | 2023-12-01 | Soft bulletproof stab-resistant liner and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117656627A (en) |
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2023
- 2023-12-01 CN CN202311634392.2A patent/CN117656627A/en active Pending
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