CN116728905A - Bulletproof plate and preparation method thereof - Google Patents
Bulletproof plate and preparation method thereof Download PDFInfo
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- CN116728905A CN116728905A CN202310808592.9A CN202310808592A CN116728905A CN 116728905 A CN116728905 A CN 116728905A CN 202310808592 A CN202310808592 A CN 202310808592A CN 116728905 A CN116728905 A CN 116728905A
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- temperature
- bulletproof
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- ultra
- molecular weight
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 23
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 23
- 239000004831 Hot glue Substances 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 10
- 239000003973 paint Substances 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920002396 Polyurea Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 2
- 239000004760 aramid Substances 0.000 claims 1
- 229920003235 aromatic polyamide Polymers 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000004698 Polyethylene Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
Landscapes
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The application relates to an bulletproof plate and a preparation method thereof, which are characterized in that proper ultra-high molecular weight polyethylene laid cloth, a ceramic layer, a hot melt adhesive film and a crack stopper layer are screened, a proper and simple preparation process is explored, and the surface density of the prepared bulletproof plate is not more than 37.5kg/m 2 Resist againstThe distance of 15 meters effectively prevents 3 bullet-playing speed 878+/-10 m/s of 53 type 7.62 mm armor-piercing combustion bullet, and the concave area is not more than 35mm.
Description
Technical Field
The application belongs to the technical field of bulletproof plates, and particularly relates to a bulletproof plate and a preparation method thereof.
Background
The bulletproof plate is widely used in bulletproof armor, such as the protection of vehicles and ships and the protection of civil safes and securities buses, and the bulletproof plate mainly has three kinds: steel bulletproof plugboards, polyethylene PE bulletproof plugboards and ceramic bulletproof plugboards. Steel ballistic inserts have been in use since the second battle and have occupied the major market for ballistic inserts for decades, but after polyethylene and ceramic ballistic inserts have been developed, steel ballistic inserts have been increasingly replaced, although still in use today, but in smaller numbers. The ceramic insert has the disadvantage that after being hit by a bullet, the strike point cannot defend against the bullet again. The highest protection level that PE bulletproof flashboard can reach is NIJ III level, can't defend rifle, armor-piercing bullet and the bullet of bigger power, and the compound PE bulletproof flashboard can resist rifle, armor-piercing combustion bullet to a certain extent, and is used more. Patent CN202011325268.4 discloses a composite bulletproof plugboard and a preparation method thereof, and the surface density of the composite bulletproof plugboard prepared by the method is not more than 35kg/m 2 The concave is smaller after resisting the bullet, and the requirement can be met to a certain extent, but the preparation method is more complex, and two composite systems are arranged in the preparation process, so that the composite systems are required to be pasted for many times, and the mass production is not facilitated. Patent CN202010168724.2 discloses a method of autoclave formation which softens the PE by heating it to 125-135 ℃ to complete the filling of cavities and voids, but at this temperature softening greatly weakens the ballistic resistance of the PE laminate. Therefore, the bulletproof plate or the surface density prepared by the prior art is higher; the depth of the concave is deeper, or the preparation method is complex, the efficiency is lower, and the related requirements of the bulletproof plate are difficult to meet.
The preparation method of the bulletproof plate has the advantages of simple operation, high production efficiency, small surface density and small concave after resisting bullets, and is suitable for batch production; with the increasing demands for light weight and functional reinforcement of bulletproof boards, future application prospects will be wider.
Disclosure of Invention
The application provides a bulletproof plate and a preparation method thereof, which are used for solving the technical problems of larger density of the current bulletproof plate surface, deeper concave after resisting bullets, complex preparation process and the like.
The content of the application comprises:
the bulletproof plate comprises a crack stop layer, a ceramic layer, a hot melt adhesive film and an ultra-high molecular weight polyethylene bulletproof plugboard from outside to inside in sequence; the surface density of the hot melt adhesive film is 50-70g/m 2 The heat conductivity is more than or equal to 10W/mK, and the melt index is 6-9g/10min; the ultra-high molecular weight polyethylene bulletproof plugboard consists of a surface density of 115-125g/m 2 Is made of ultra-high molecular weight polyethylene laid cloth;
the preparation method comprises the following steps:
(1) Sequentially assembling the crack stop layer, the bulletproof ceramic, the hot melt adhesive film and the ultra-high molecular weight polyethylene bulletproof plugboard, filling into a sealing bag for sealing, and vacuumizing;
(2) Pushing the sealed materials into an autoclave for compounding;
(3) Spraying paint on the composite material, air-drying, standing and forming to obtain the bulletproof plate;
the operation process of the autoclave is as follows:
raising the temperature and the pressure to 1Mpa and the temperature to 75-80 ℃;
maintaining the temperature and pressure for a period of time;
raising the temperature and the pressure to 1.6Mpa and the temperature to 95-105 ℃;
maintaining the temperature and pressure for a period of time;
releasing the pressure and cooling to normal temperature.
Further, the hot melt adhesive film is one of PO, TPU or EVA.
Further, the main component of the PO hot melt adhesive film is polyolefin; TPU hot melt adhesive is also called TPU hot melt double-sided adhesive, and the main component of the TPU hot melt adhesive is polyurethane; the EVA hot melt adhesive film mainly comprises a vinyl acetate copolymer.
Further, the ceramic layer has an areal density of 26.5-27.0g/m 2 The hardness is more than or equal to 3000HV, and the elastic modulus is more than or equal to 470 GPA.
Further, the ceramic layer is selected from one of silicon nitride and boron nitride.
Further, the ultra-high molecular weight polyethylene non-woven cloth is subjected to warp tiling, superposition, typesetting, cutting, counterweight and pressing to obtain the ultra-high molecular weight polyethylene bulletproof plugboard.
Further, the crack stop layer is one of aramid fiber, glass fiber or ultra-high molecular weight polyethylene fiber.
Further, the bulletproof plate surface density is less than or equal to 37.5kg/m 2 Can resist 3 fire bullets of 53-shot armor piercing of 7.62 mm, and the concave area is less than or equal to 35mm.
The preparation method of the bulletproof plate comprises the following steps:
(1) Sequentially assembling the crack stop layer, the bulletproof ceramic, the hot melt adhesive film and the ultra-high molecular weight polyethylene bulletproof plugboard, filling into a sealing bag for sealing, and vacuumizing;
(2) Pushing the sealed materials into an autoclave for compounding;
(3) And spraying paint on the composite material, air-drying, standing and forming to obtain the bulletproof plate.
Further, the operation process of the autoclave is as follows:
0-30min, negative pressure reaching 1Mpa, and temperature reaching 75-80deg.C;
31-45min, and maintaining the temperature and the pressure for 15 min;
46-60min, negative pressure reaching 1.6Mpa, and temperature reaching 95-105deg.C;
61-120min, maintaining the temperature and pressure for 60 min;
and (3) releasing the pressure after 121-180min, and reducing the temperature to normal temperature.
Further, the paint in the step (3) is black polyurea B component: black polyurea a component = 1.2:0.8.
further, the diameter phi of the spray nozzle used for spraying in the step (3) is 1.2mm, and the spraying distance is 550-630 mm.
Further, the temperature of the paint sprayed in the step (3) is 65-75 ℃, and the air drying and standing molding time is 5-6 hours.
The beneficial effects of the application are as follows:
(1) In terms of the preparation process, the method is simple and easy to operate, does not need a plurality of composite systems, has high production efficiency, and can be used for mass production;
(2) The composite temperature of the autoclave is controlled in the preparation process, so that overhigh or overlow is avoided, and an bulletproof plate with good mechanical properties can be generally obtained;
(3) In terms of effect, the surface density of the bulletproof plate prepared by the method is not more than 37.5kg/m 2 The 53-type 7.62 mm armor-piercing combustion bomb (strong-charge bomb) capable of effectively preventing 3-firing at a speed of 878+/-10 m/s at a distance of 15 meters belongs to the advanced level in China.
Drawings
Fig. 1 is a schematic structural view of an bulletproof plate according to the present application, wherein 1 is a crack stopper layer, 2 is a ceramic layer, 3 is a hot melt adhesive film, and 4 is an ultra-high molecular weight polyethylene bulletproof insert plate.
Detailed Description
Example 1
(1) Preparation of ultra-high molecular weight polyethylene bulletproof plugboard
Selecting a surface density of 120g/m 2 The ultra-high molecular weight polyethylene laid cloth is laid on a workbench, the laid cloth is required to be smooth, and each layer is overlapped;
adopting special edition software for clothing design, automatically typesetting according to the size of the bulletproof plugboard, and then cutting;
the cut material sheet is transported to a counterweight chamber for counterweight and pressing, and the surface density is controlled to be 8.4-8.5kg/m 2 Obtaining the ultra-high molecular weight polyethylene bulletproof plugboard.
(2) Selecting bulletproof ceramic and hot melt adhesive film
Selecting silicon nitride ceramics as bulletproof ceramics;
selecting ultra-high molecular weight polyethylene fibers as a crack-stopping layer;
EVA adhesive is selected as the hot melt adhesive film.
(3) Entering autoclave for compounding
The crack stop layer, the ballistic ceramic, the hot melt adhesive film and the ultra high molecular weight polyethylene ballistic insert plate were assembled according to the structure of figure 1.
Then placing the material on a charging table, sealing the assembled raw materials by using a sealing bag, then carrying out vacuumizing operation to confirm that the sealing bag is not damaged, then pushing the charging table into an autoclave, and opening the autoclave.
The autoclave operation process is as follows:
0-30min, negative pressure reaching 1Mpa, and temperature reaching 75deg.C;
31-45min, and maintaining the temperature and the pressure for 15 min;
46-60min, negative pressure reaching 1.6Mpa, and temperature reaching 95deg.C;
61-120min, maintaining the temperature and pressure for 60 min;
121-180min, releasing pressure, and reducing temperature to normal temperature;
obtaining a semi-finished product.
(4) Spray forming of bulletproof plate
Preparing: paint (black polyurea B component): curing agent (black polyurea a component) =1.2: and 0.8, heating to 70 ℃ by equipment to start spraying. Selecting nozzle diameter phi 1.2mm, spraying distance 600mm, uniformly spraying the surface of the product, and finally air-drying and standing for 5.5h to form the bulletproof plate.
Example 2
0-30min, negative pressure reaching 1Mpa, and temperature reaching 80deg.C;
31-45min, and maintaining the temperature and the pressure for 15 min;
46-60min, negative pressure reaching 1.6Mpa, and temperature reaching 105deg.C;
61-120min, maintaining the temperature and pressure for 60 min;
121-180min, releasing pressure, and reducing temperature to normal temperature;
otherwise, as in example 1, a bulletproof plate was obtained.
Comparative example 1
A two-component epoxy resin adhesive (the two-component epoxy resin adhesive consists of 90 parts of epoxy resin and 10 parts of curing agent) is selected to replace the hot melt adhesive film, and the same is adopted in the embodiment 1.
Comparative example 2
The autoclave operation process is as follows:
0-30min, negative pressure reaching 1Mpa, and temperature reaching 95deg.C;
31-45min, and maintaining the temperature and the pressure for 15 min;
46-60min, negative pressure reaching 1.6Mpa, and temperature reaching 125 ℃;
61-120min, maintaining the temperature and pressure for 60 min;
121-180min, releasing pressure, and reducing temperature to normal temperature;
otherwise, the same as in example 1 was conducted.
The bullet panel densities obtained in examples 1-2 and comparative examples 1-2, the number of bullets and the dent distance statistics against 53 type 7.62 mm armor piercing fire bullets are shown in table 1 below.
TABLE 1 bulletproof plate test results
From comparative example 1 and example 1, other non-hot melt adhesives were used to obtain a greater panel density against an increase in the dent distance of 53-type 7.62 mm armor piercing fireshell; from comparative example 2 and example 1, the composite temperature of the autoclave was increased, the performance of the obtained bulletproof plate was lowered, the surface density was large, and the dent distance against the 53-type 7.62 mm armor-piercing combustion bomb was also significantly increased.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of protection of the application is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order and there are many other variations of the different aspects of one or more embodiments of the application as described above, which are not provided in detail for the sake of brevity.
One or more embodiments of the present application are intended to embrace all such alternatives, modifications and variations as fall within the broad scope of the present application. Accordingly, any omissions, modifications, equivalents, improvements and others which are within the spirit and principles of the one or more embodiments of the application are intended to be included within the scope of the application.
Claims (9)
1. The bulletproof plate is characterized by sequentially comprising a crack stop layer, a ceramic layer, a hot melt adhesive film and an ultra-high molecular weight polyethylene bulletproof plugboard from outside to inside; the surface density of the hot melt adhesive film is 50-70g/m 2 The heat conductivity is more than or equal to 10W/mK,the melt index is 6-9g/10min; the ultra-high molecular weight polyethylene bulletproof plugboard consists of a surface density of 115-125g/m 2 Is made of ultra-high molecular weight polyethylene laid cloth;
the preparation method comprises the following steps:
(1) Sequentially assembling the crack stop layer, the bulletproof ceramic, the hot melt adhesive film and the ultra-high molecular weight polyethylene bulletproof plugboard, filling into a sealing bag for sealing, and vacuumizing;
(2) Pushing the sealed materials into an autoclave for compounding;
(3) Spraying paint on the composite material, air-drying, standing and forming to obtain the bulletproof plate;
the operation process of the autoclave is as follows:
raising the temperature and the pressure to 1Mpa and the temperature to 75-80 ℃;
maintaining the temperature and pressure for a period of time;
raising the temperature and the pressure to 1.6Mpa and the temperature to 95-105 ℃;
maintaining the temperature and pressure for a period of time;
releasing the pressure and cooling to normal temperature.
2. The ballistic panel of claim 1 wherein the ceramic layer has an areal density of from 26.5 to 27.0g/m 2 The hardness is more than or equal to 3000HV, and the elastic modulus is more than or equal to 470 GPA.
3. The ballistic panel of claim 1 wherein the ultra-high molecular weight polyethylene laid fabric is tiled, overlapped, typeset, cut, weighted and pressed to provide an ultra-high molecular weight polyethylene ballistic panel.
4. A ballistic panel as claimed in any one of claims 1 to 3, wherein the crack stop layer is one of aramid, glass fibre or ultra high molecular weight polyethylene fibre.
5. A ballistic panel according to any one of claims 1-3, wherein the panel density is not more than 37.5kg/m 2 3 fire-resistant 53 fire-resistant armor-piercing bullets with the thickness of 7.62 mm are resisted, and the concave area is less than or equal to 35mm.
6. A method of manufacturing a ballistic panel as claimed in any one of claims 1 to 5, comprising the steps of:
(1) Sequentially assembling the crack stop layer, the bulletproof ceramic, the hot melt adhesive film and the ultra-high molecular weight polyethylene bulletproof plugboard, filling into a sealing bag for sealing, and vacuumizing;
(2) Pushing the sealed materials into an autoclave for compounding;
(3) Spraying paint on the composite material, air-drying, standing and forming to obtain the bulletproof plate;
the operation process of the autoclave is as follows:
0-30min, pressure reaching 1Mpa, and temperature reaching 75-80deg.C;
31-45min, and maintaining the temperature and pressure for 15 min;
46-60min, the pressure reaches 1.6Mpa, and the temperature reaches 95-105 ℃;
61-120min, maintaining the above temperature and pressure for 60 min;
and (3) releasing the pressure for 121-180min, and cooling to normal temperature.
7. The method of manufacturing a ballistic resistant panel of claim 6 wherein in step (3) the paint is a black polyurea B component: black polyurea a component = 1.2:0.8.
8. the method of producing a bulletproof plate according to claim 6, wherein the nozzle diameter Φ1.2mm for spraying in the step (3) is 550 to 630mm.
9. The method for manufacturing an elastic plate according to any one of claims 7 to 8, wherein the temperature of the paint sprayed in the step (3) is 65 to 75 ℃, and the air-drying and standing molding time is 5 to 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310808592.9A CN116728905A (en) | 2023-07-04 | 2023-07-04 | Bulletproof plate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310808592.9A CN116728905A (en) | 2023-07-04 | 2023-07-04 | Bulletproof plate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116728905A true CN116728905A (en) | 2023-09-12 |
Family
ID=87908020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310808592.9A Pending CN116728905A (en) | 2023-07-04 | 2023-07-04 | Bulletproof plate and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116728905A (en) |
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2023
- 2023-07-04 CN CN202310808592.9A patent/CN116728905A/en active Pending
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