CN117570783A - Design method of anti-thunder composite armor plate for vehicle and armor plate - Google Patents
Design method of anti-thunder composite armor plate for vehicle and armor plate Download PDFInfo
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- CN117570783A CN117570783A CN202311638327.7A CN202311638327A CN117570783A CN 117570783 A CN117570783 A CN 117570783A CN 202311638327 A CN202311638327 A CN 202311638327A CN 117570783 A CN117570783 A CN 117570783A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H7/00—Armoured or armed vehicles
- F41H7/02—Land vehicles with enclosing armour, e.g. tanks
- F41H7/04—Armour construction
- F41H7/042—Floors or base plates for increased land mine protection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0442—Layered armour containing metal
- F41H5/0457—Metal layers in combination with additional layers made of fibres, fabrics or plastics
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention discloses a design method of an anti-thunder composite armor plate of a vehicle and the armor plate, wherein the design method comprises the steps of selecting a protective steel plate, compounding a protective steel plate heat insulation layer on the explosion-facing side of the protective steel plate, and compounding a first buffering energy absorption layer on the back explosion side of the protective steel plate; compounding an EPS hard polymer foam board on the back explosion side of the first buffering energy absorbing layer; and compounding the second buffering energy absorbing layer on the back explosion side of the EPS hard high polymer foam board. The vehicle lightning-resistant composite armor panel is made by the design method. The anti-thunder composite armor plate for the vehicle has the characteristics of good protection effect, low manufacturing cost and light weight.
Description
Technical Field
The invention relates to the technical field of vehicle protection, in particular to a design method of a vehicle anti-lightning composite armor plate and an armor plate designed by the method.
Background
At present, in united nations and tasks, the peace officers often need to patrol on vehicles such as military off-road vehicles, armored vehicles and the like in a war area, and the risk of encountering mines in the patrol process is always high. Even if the 21 st century is entered, various situations of triggering mines by vehicles are encountered in some once combat areas almost every year, and the situations are serious, so that the vehicles are destroyed and the persons are killed on site. The most common landmine and simple explosion devices are 6, 8 and 10kg TNT explosion equivalents. Therefore, the survival rate of the vehicle when encountering mine explosion is required to be improved, and the antiknock capability of the vehicle bottom plate is only improved further, and particularly the 6-10kg TNT vehicle antithunder composite armor plate is provided.
The patent with publication number CN214524091U discloses a composite bottom plate for resisting mine explosion of a vehicle, which comprises a high-strength steel outer plate, a foam aluminum core plate and a carbon steel inner plate, wherein the three are of a stacked composite structure from bottom to top; the high-strength and toughness steel outer plate and the foam aluminum core plate are connected together by adopting an adhesive bonding or brazing mode; the foam aluminum core plate can be replaced by foam aluminum energy absorption columns, a plurality of foam aluminum energy absorption columns are vertically arranged and distributed side by side, and adjacent foam aluminum energy absorption columns are bonded together; the foam aluminum energy absorption column consists of an aluminum pipe and foam aluminum, and the foam aluminum is filled in the aluminum pipe; the section of the high-strength and high-toughness steel outer plate is in an inverted trapezoid shape, the middle of the high-strength and high-toughness steel outer plate is in a plane structure, the two sides of the high-strength and high-toughness steel outer plate are in an inclined plane structure, and the inclined plane structure is used as an explosion impact waveguide flow surface. The composite baseboard for resisting the landmine explosion of the vehicle can improve the antiknock capability to more than 2500Mpa, enlarge the impact area of the impact point of the elastic sheet by more than 50 times, reduce the attack force to less than 2 percent, and greatly improve the survival rate of the vehicle when the vehicle is subjected to the landmine explosion. The thickness of the high-strength and high-toughness steel outer plate is 2-6 mm, the thickness of the foamed aluminum core plate is 50-150 mm, the thickness of the carbon steel inner plate is 2-5 mm, and the vertical height of the foamed aluminum energy absorption column is 30-100 mm. The defects are that: firstly, the foam metal is utilized, and is a metal material containing foam air holes, and through the unique structure, the foam metal has a series of good advantages of small density, good heat insulation performance, good sound insulation performance, electromagnetic wave absorption and the like. When the foam metal is subjected to pressure, the foam metal has excellent impact energy absorption characteristics due to the increase of the stress area and the strain hardening effect of the material caused by the collapse of the air holes. Generally, the higher porosity of the foam metal leads the impact resistance of the foam metal to be better than that of other materials, the foam metal sequentially goes through an elastic deformation stage, a brittle fracture stage and a compaction stage when the foam metal is subjected to external pressure, but when the foam metal is subjected to excessive instantaneous pressure, the foam metal enters the compaction stage in a short time, the broken frameworks of the foam metal are extruded together, and the foam metal becomes solid metal in practice, so that in some fields such as road protection, the good anti-collision and anti-explosion effects cannot be achieved by simply utilizing the foam metal. Secondly, the whole thickness is up to 54-161mm, the manufacturing cost is high, and the weight is heavy.
Disclosure of Invention
The invention aims to provide a design method of a lightning-resistant composite armor plate for a 6-10kg TNT vehicle, aiming at the defects of the prior art, and the design method has the characteristics of good protection effect, low manufacturing cost and light weight.
The technical scheme adopted by the invention is as follows.
The design method of the lightning-resistant composite armor plate of the vehicle is characterized by comprising the following steps of:
step 1: selecting a protective steel plate according to the explosion equivalent of the mine; the explosion equivalent of the mine is 6-10kg TNT;
step 2: compounding the protective steel plate heat insulation layer on the explosion-facing side of the protective steel plate; the protective steel plate heat insulation layer comprises a first glass fiber cloth laminated plate and a first antiknock coating; the explosion-facing surface of the first glass fiber cloth laminated board is sprayed with rigid polyurea to form a first anti-explosion coating;
step 3: compounding the first buffering energy absorbing layer on the back explosion side of the protective steel plate; the first buffering energy absorbing layer comprises a second glass fiber cloth laminated plate, a second antiknock coating and a third antiknock coating; the second antiknock coating is formed by spraying flexible polyurea on the explosion-facing surface of the second glass fiber cloth laminated board; the third antiknock coating is formed by spraying flexible polyurea on the back explosion surface of the second glass fiber cloth laminated board; the second antiknock coating of the first buffering energy-absorbing layer is compounded on the back explosion side of the protective steel plate;
step 4: compounding an EPS hard polymer foam board on the back explosion side of the first buffering energy absorbing layer;
step 5: compounding a second buffering energy absorbing layer on the back explosion side of the EPS hard high polymer foam board; the second buffering energy absorbing layer comprises a third glass fiber cloth laminated board and a fourth antiknock coating; the fourth antiknock coating is formed by spraying flexible polyurea on the back explosion surface of the third glass fiber cloth laminated board;
the compounding refers to bonding by using epoxy modified polyurethane adhesive.
As the preferable technical scheme, the surfaces of the first antiknock coating, the first glass fiber laminated board, the protective steel plate, the second antiknock coating, the second glass fiber laminated board, the third antiknock coating, the EPS hard polymer foam board, the third glass fiber laminated board and the fourth antiknock coating, which are outside the explosion-facing side and the back explosion side, are all sprayed with flexible polyurea to form a radial protective surface layer.
In the step 1, the thickness of the protective steel plate which is required to be minimum for each explosion equivalent is determined by an antiknock test or simulation calculation, and the thickness of the protective steel plate is not less than the thickness determined by the test or simulation calculation.
As a preferable technical scheme, a steel plate with the model number of N500-N650 is selected as the protective steel plate, and the thickness of the protective steel plate is 8-20mm.
As a preferable technical scheme, the thickness of the first anti-explosion coating which is required to be minimum for each explosion equivalent is determined through anti-explosion test or simulation calculation according to the requirement that the protective steel plate is not broken in the anti-explosion process, and the thickness of the first anti-explosion coating is not smaller than the thickness determined through the test or simulation calculation.
As a preferable technical scheme, the thickness of the first antiknock coating is 1-6mm.
As a preferable technical scheme, the thickness of the first glass fiber cloth laminated board is 4-20mm of the thickness of the protective steel plate; the thickness of the protective steel plate is 8-20mm; the thickness of the second glass fiber cloth laminated board is 4-20mm of the thickness of the protective steel plate; the thickness of the third antiknock coating is 3-10mm; the thickness of the second antiknock coating is 3-10mm; the thickness of the EPS hard polymer foam board is 6-20mm; the thickness of the third glass fiber cloth laminated board is 4-20mm; the thickness of the fourth antiknock coating is 1-1.5mm.
As the preferable technical scheme, the elongation at break of the first antiknock coating is 65-105%, and the elongation at break of the second antiknock coating, the third antiknock coating and the fourth antiknock coating is not less than 250%.
The armor plate is made by any one of the design methods described above. The explosion shock wave energy-absorbing device comprises a protective steel plate heat-insulating layer, a protective steel plate, a first buffering energy-absorbing layer, an EPS hard polymer foam plate and a second buffering energy-absorbing layer which are compounded together in sequence along the propagation direction of the explosion shock wave;
the first glass fiber cloth laminated board is provided with a protective steel plate heat insulation layer, and the explosion-facing surface of the first glass fiber cloth laminated board is sprayed with rigid polyurea to form a first antiknock coating;
the first buffering energy-absorbing layer comprises a second glass fiber laminated board, a second antiknock coating and a third antiknock coating, wherein the second antiknock coating is formed by spraying flexible polyurea on the explosion-facing surface of the second glass fiber laminated board, and the third antiknock coating is formed by spraying flexible polyurea on the back explosion-facing surface of the second glass fiber laminated board;
the second buffering energy absorbing layer comprises a third glass fiber cloth laminated board and a fourth antiknock coating; the fourth antiknock coating is formed by spraying flexible polyurea on the back explosion surface of the third glass fiber cloth laminated board.
The beneficial effects of the invention are as follows.
1. Because the first antiknock coating is the rigid polyurea, the first antiknock coating is cracked firstly, and meanwhile, a first glass fiber cloth laminated plate layer which is flame-retardant and high in strength is arranged, so that the protective steel plate is prevented from cracking in the thunder explosion process.
2. The anti-cracking layer of the protective steel plate consists of a first glass fiber laminated plate and a first antiknock coating, wherein the first glass fiber laminated plate is provided with a plurality of holes, the first antiknock coating and the first glass fiber laminated plate are good in combination, simple and convenient to manufacture and low in manufacturing cost, and the protective effect on the protective steel plate is far better than that of directly spraying a high-molecular compound on the protective steel plate. Because the high molecular compound is directly sprayed on the explosion-facing surface of the steel plate layer, the repair is not easy, and the sprayed high molecular compound such as polyurea is not combined with the steel plate to form the first glass fiber laminated plate. The anti-cracking layer of the protective steel plate can be replaced at any time, and has strong repairability and convenient replacement.
3. The first glass fiber cloth laminated board has good flame retardance, and effectively protects the following layers from normal service state after deflagration.
4. The first buffering energy-absorbing layer has the advantages that the two sides of the glass fiber cloth laminated board 5 are coated with high polymer compounds, so that the glass fiber cloth laminated board is convenient to manufacture and replace.
5. Advantages of the second cushioning energy absorbing layer: the glass fiber cloth laminated board 8 is coated with a high molecular compound, so that the glass fiber cloth laminated board is convenient to manufacture and replace. The advantage of the second cushioning energy absorbing layer can protect the EPS hard polymer foam slab.
6. The prior art foam metal is abandoned and an EPS hard polymer foam board is adopted. Because, when foam metal receives the excessive pressure in the twinkling of an eye, foam metal enters into the compaction stage promptly in the short time, and the broken skeleton of foam metal is extruded together, and foam metal becomes solid metal in fact this moment, therefore in some fields such as anticollision, anti-impact, riot etc. like road protection, simple utilization foam metal can not play fine anticollision protection effect. The EPS hard polymer foam board layer has lighter weight than foam metal and better elasticity than foam metal, thus playing a better role in the method and the device of the invention.
7. The second antiknock coating, the third antiknock coating and the fourth antiknock coating are flexible polyurea, and are softer than the first antiknock coating, so that the buffering effect is enhanced.
8. The glass fiber cloth laminated board in the protective armor is matched with a high polymer coating, has extremely high elastic modulus under the action of high strain rate, and can be used for breaking or restraining the external broken sheet in the second anti-explosion coating and the third anti-explosion coating when the metal plate is broken and the external broken sheet is broken by the explosion face and the projectile body is penetrated, so that secondary injury is greatly reduced.
9. The EPS hard polymer foam board with the protection steel plate crack resistance layer, the protection steel plate, the first buffering energy absorption layer and the second buffering energy absorption layer are combined to form a hierarchical energy consumption structure, so that the deformation of the protection steel plate can be effectively restrained, the energy absorption efficiency of the protection armor is greatly improved, and the safety of the protection structure is greatly improved.
10. A plurality of glass fiber cloth laminated plates sprayed with high-molecular materials are used for replacing steel plates, EPS hard high-molecular foam plates are used for buffering, and compared with the prior art, the heat preservation effect is greatly improved.
11. The high-quality steel is reduced, the characteristics of good impact resistance, good anti-cracking performance, high tensile resistance, high bending resistance, high compression resistance, strong corrosion resistance, good durability, strong sound insulation performance, and the like of the inorganic composite material are fully exerted, the stone-like structure surface is not easy to detect by radar sound waves, and the like, and meanwhile, the structure also fully exerts the external impact energy absorbed by the coordinated deformation of the structure and foam metal, and can bear the external strong impact performance, so that the high-quality steel can be widely applied to various special fields such as anti-explosion, anti-collision, shelter, damping, sound insulation, corrosion resistance and the like.
12. The thickness of the protective steel plate is only half of the prior art and only one steel plate is used. The whole thickness and the weight are greatly reduced. The technical scheme of the invention is that the glass fiber laminated board and the EPS hard polymer foam board are industrial products which are produced in mass at ready use, and are cheaper, compared with armor plates made of the novel materials with high precision at home and abroad, the overall price is only 1-2%.
13. The special-shaped energy consumption composite antiknock protective armor can flexibly adjust the size and the position of the protective armor according to the requirements of a protective object, and is not limited by the protective position; and the corresponding structural members can be replaced according to different protection grades.
Drawings
FIG. 1 is a schematic view of the structure of a preferred embodiment of the armor panel of the present invention.
Fig. 2 is a partial enlarged view of a portion a of fig. 1.
FIG. 3 is a schematic view of the structure of a preferred embodiment of the armor panel of the present invention.
Fig. 4 is a partial enlarged view of a portion B of fig. 3.
Wherein: a first antiknock coating-1; a first glass fiber cloth laminated board-2; a protective steel plate-3; a second antiknock coating-4; a second glass fiber cloth laminated board-5; a third antiknock coating-6; EPS hard macromolecule foam board-7; a third glass fiber cloth laminated board-8; a fourth antiknock coating-9; protective steel plate heat insulation layer-10; a first cushioning energy absorbing layer-11; a second cushioning energy absorbing layer-12; radial protection facing-13.
Detailed Description
The invention will now be further described with reference to the drawings and examples.
Example 1. As shown in fig. 3-4. The design method of the lightning-resistant composite armor plate of the 6kg TNT vehicle comprises the following steps:
step 1: according to the equivalent of landmine explosion, a protective steel plate 3 is selected.
Step 2: compounding a protective steel plate heat insulation layer 10 on the explosion-facing side of the protective steel plate 3; the protective steel plate heat insulation layer 10 comprises a first glass fiber cloth laminated plate 2 and a first antiknock coating 1; the explosion-facing surface of the first glass fiber cloth laminated board 2 is sprayed with rigid polyurea to form a first anti-explosion coating 1; the thickness of the first antiknock coating 1 is determined according to the requirement that the protective steel sheet 3 does not fracture when the mine explodes.
Step 3: compounding a first buffering energy absorption layer 11 on the back explosion side of the protective steel plate 3; the first buffering energy absorbing layer 11 comprises a second glass fiber cloth laminated board 5, a second antiknock coating 4 and a third antiknock coating 6; the second antiknock coating 4 is formed by spraying flexible polyurea on the explosion-facing surface of the second glass fiber cloth laminated board 5; the third antiknock coating 6 is formed by spraying flexible polyurea on the back explosion surface of the second glass fiber cloth laminated board 5; the second antiknock coating 4 of the first buffer energy absorbing layer 11 is compounded on the back explosion side of the protective steel plate 3.
Step 4: compounding the EPS hard polymer foam board 7 on the back explosion side of the first buffering energy absorbing layer 11;
step 5: compounding a second buffering energy absorbing layer 12 on the back explosion side of the EPS hard high polymer foam board 7; the second buffering energy absorbing layer 12 comprises a third glass fiber cloth laminated board 8 and a fourth antiknock coating 9; the fourth antiknock coating 9 is formed by spraying a flexible polyurea on the back explosion side of the third glass fiber cloth laminated board 8.
The compounding refers to bonding by using epoxy modified polyurethane adhesive.
Specifically, in this embodiment, the vehicle anti-lightning composite armor plate sequentially includes, along an antiknock direction, i.e., from left to right, a protective steel plate insulation layer 10, a protective steel plate 3, a first buffer energy absorption layer 11, an EPS hard polymer foam plate 7, and a second buffer energy absorption layer 12;
the protective steel plate heat insulation layer 10 comprises a first glass fiber cloth laminated plate 2 and a first antiknock coating 1; the explosion-facing surface of the first glass fiber cloth laminated board 2 is sprayed with rigid polyurea to form a first anti-explosion coating 1; the explosion-facing surface of the first glass fiber cloth laminated board 2 is the left side surface of the first glass fiber cloth laminated board 2;
the first buffering energy absorbing layer 11 comprises a second glass fiber cloth laminated board 5, a second antiknock coating 4 and a third antiknock coating 6; the second antiknock coating 4 is formed by spraying flexible polyurea on the explosion-facing surface of the second glass fiber cloth laminated board 5; the third antiknock coating 6 is formed by spraying flexible polyurea on the back explosion surface of the second glass fiber cloth laminated board 5;
the second buffering energy absorbing layer 12 comprises a third glass fiber cloth laminated board 8 and a fourth antiknock coating 9; the fourth antiknock coating 9 is formed by spraying a flexible polyurea on the back explosion side of the third glass fiber cloth laminated board 8.
The elongation at break of the first antiknock coating 1 was 65%. The rigid polyurea of the first antiknock coating 1 was formulated using the method disclosed in CN10550519a example 5.
The second antiknock coating 4, the third antiknock coating 6 and the fourth antiknock coating 9 are made of flexible polyurea, and have elongation at break of not less than 250% and are prepared by the method disclosed in the example 2 of CN 101092535B.
The thickness of the protective steel plate 3 which requires the least for each explosion equivalent is determined by an antiknock test, and the thickness of the protective steel plate 3 is not less than the thickness determined by the test. Through experiments, the minimum thickness of the protective steel plate 3 against 6kg TNT explosion is 7mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 is not less than 0.5mm; the minimum thickness of the protective steel plate 3 against the explosion of 8kg TNT is 11mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 2mm; the minimum thickness of the protective steel plate 3 against 10kg TNT explosion is 16mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 6mm. In this example, the thickness of the first antiknock coating 1 was chosen to be 1mm against 6kg of TNT explosion.
The thickness of the first glass fiber cloth laminated board 2 is 4mm of the thickness of the protective steel board 3. The thickness of the second glass fiber cloth laminated board 5 is 4mm of the thickness of the protective steel plate 3.
The thickness of the third antiknock coating 6 is 3mm.
The thickness of the second antiknock coating 4 is 3mm.
The thickness of the EPS hard polymer foam board 7 is 6mm.
The thickness of the third glass fiber cloth laminated board 8 is 4mm; the thickness of the fourth antiknock coating 9 is 1mm.
All the glass fiber cloth laminated boards are glass fiber cloth laminated boards produced by Chengdu epoxy glass cloth laminated boards company, the surface bending elastic modulus is 2.4E10Pa, and the density is 1.8E3kg/m3.
EPS is called polystyrene foam, called EPS for short, and is a light high-molecular polymer. The foaming agent is added into polystyrene resin, and the mixture is heated and softened to generate gas, so that the foamed plastic with a hard closed-cell structure is formed. The processing method can be divided into a mode method and an extrusion method according to the foaming mode. The uniform closed cavity structure ensures that the EPS has the characteristics of small water absorption, good heat preservation, light weight, high mechanical strength and the like. It can be made into foam products with different densities and different shapes, and can also be used for producing foam boards with different thicknesses. The method is widely used in the fields of construction, heat preservation, packaging, freezing, daily necessities, industrial casting and the like. But also can be used for manufacturing showcases, advertising signboards and toys. The heat insulation material is mainly applied to external heat insulation of wall and internal heat insulation of external wall and floor heating for adapting to the national energy-saving requirement of buildings. Volume weight of the EPS hard polymer foam board 7: 22kg/m optical, oxygen index: 30% of: 103kPa, flame retardant rating: b1 level, coefficient of thermal conductivity: 0.038W/mK.
The first antiknock coating 1, the first glass fiber laminated board 2, the protective steel plate 3, the second antiknock coating 4, the second glass fiber laminated board 5, the third antiknock coating 6, the EPS hard polymer foam board 7, the third glass fiber laminated board 8 and the fourth antiknock coating 9 are all sprayed with flexible polyurea on the face except the explosion-facing side and the back explosion side to form a radial protective surface layer 13. Formulated using the procedure disclosed in CN101092535B example 2.
The armor plate is manufactured by adopting the design method and comprises a protective steel plate heat insulation layer 10, a protective steel plate 3, a first buffer energy absorption layer 11, an EPS hard polymer foam plate 7 and a second buffer energy absorption layer 12 which are compounded together in sequence along the propagation direction of the explosion shock wave;
the protective steel plate heat insulation layer 10 comprises a first glass fiber cloth laminated board 2, wherein the explosion-facing surface of the first glass fiber cloth laminated board 2 is sprayed with rigid polyurea to form a first anti-explosion coating 1;
the first buffering energy-absorbing layer 11 comprises a second glass fiber cloth laminated board 5, a second antiknock coating 4 and a third antiknock coating 6, wherein the second antiknock coating 4 is formed by spraying flexible polyurea on the explosion-facing surface of the second glass fiber cloth laminated board 5, and the third antiknock coating 6 is formed by spraying flexible polyurea on the back explosion-facing surface of the second glass fiber cloth laminated board 5;
the second buffering energy absorbing layer 12 comprises a third glass fiber cloth laminated board 8 and a fourth antiknock coating 9; the fourth antiknock coating 9 is formed by spraying a flexible polyurea on the back explosion side of the third glass fiber cloth laminated board 8.
The example was tested for an explosion equivalent against 8kg TNT.
Example 2. As shown in fig. 1-2, this embodiment is different from embodiment 1 in that: the elongation at break of the first antiknock coating 1 was 105%. The rigid polyurea of the first antiknock coating 1 was formulated using the method disclosed in example 1 of CN10550519 a.
The first antiknock coating 1, the first glass fiber laminated board 2, the protective steel plate 3, the second antiknock coating 4, the second glass fiber laminated board 5, the third antiknock coating 6, the EPS hard polymer foam board 7, the third glass fiber laminated board 8 and the fourth antiknock coating 9 are all sprayed with flexible polyurea on the face except the explosion-facing side and the back explosion side to form a radial protective surface layer 13.
The second antiknock coating 4, the third antiknock coating 6 and the fourth antiknock coating 9 are prepared by adopting flexible polyurea with the elongation at break of 400 percent by adopting the method disclosed in the example 2 of CN 1817989A.
The thickness of the first antiknock coating 1 is 3mm;
the thickness of the first glass fiber cloth laminated board 2 is 8mm of the thickness of the protective steel plate 3;
the thickness of the protective steel plate 3 is 10mm;
the thickness of the second glass fiber cloth laminated board 5 is 10mm of the thickness of the protective steel plate 3;
the thickness of the third antiknock coating 6 is 5mm;
the thickness of the second antiknock coating 4 is 5mm;
the thickness of the EPS hard polymer foam board 7 is 10mm;
the thickness of the third glass fiber cloth laminated board 8 is 10mm;
the thickness of the fourth antiknock coating 9 is 1.5mm.
Example 3. The present embodiment differs from embodiment 1 in that: the thickness of the first antiknock coating 1 is 6mm; the function is to protect the protection steel plate 3 from being broken and absorb energy.
The thickness of the protective steel plate 3 which requires the least for each explosion equivalent is determined by an antiknock test, and the thickness of the protective steel plate 3 is not less than the thickness determined by the test. Through experiments, the minimum thickness of the protective steel plate 3 against 6kg TNT explosion is 7mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 is not less than 0.5mm; the minimum thickness of the protective steel plate 3 against the explosion of 8kg TNT is 11mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 2mm; the minimum thickness of the protective steel plate 3 against 10kg TNT explosion is 16mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 6mm. In this example, the thickness of the first antiknock coating 1 was 3mm against an explosion of 8kg TNT. The thickness of the protective steel plate 3 is 12mm, and the protective steel plate is used for blocking flying pieces and frameworks.
The thickness of the first glass fiber cloth laminated board 2 is 10mm of the thickness of the protective steel plate 3; the function is to absorb energy through fragmentation, block TNT high temperature, prevent fire and insulate against heat, absorb explosion energy.
The thickness of the second glass fiber cloth laminated board 5 is 12mm of the thickness of the protective steel plate 3; blocking TNT high temperature, preventing fire and heat, absorbing explosion energy.
The thickness of the third antiknock coating 6 is 6mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the second antiknock coating 4 is 6mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the EPS hard polymer foam board 7 is 8mm; the function is to absorb energy.
The thickness of the third glass fiber cloth laminated board 8 is 11mm; the function is flame retarding and energy absorbing.
The thickness of the fourth antiknock coating 9 is 1.5mm. The function is to protect the protective steel plate 3 and absorb energy.
The example was tested for an explosion equivalent against 8kg TNT.
Example 4. The present embodiment differs from embodiment 2 in that: the thickness of the first antiknock coating 1 is 2mm; the function is to protect the protection steel plate 3 from being broken and absorb energy. The thickness of the first glass fiber cloth laminated board 2 is 14mm of the thickness of the protective steel plate 3; the function is to absorb energy through fragmentation, block TNT high temperature, prevent fire and insulate against heat, absorb explosion energy.
The thickness of the protective steel plate 3 is 15mm, and the protective steel plate is used for blocking flying pieces and frameworks. The thickness of the second glass fiber cloth laminated board 5 is 16mm of the thickness of the protective steel plate 3; blocking TNT high temperature, preventing fire and heat, absorbing explosion energy. 12-16 the thickness of the third antiknock coating 6 is 7mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the second antiknock coating 4 is 7mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered. The thickness of the EPS hard polymer foam board 7 is 14mm; the function is to absorb energy. The thickness of the third glass fiber cloth laminated board 8 is 15mm; the function is flame retarding and energy absorbing.
The thickness of the fourth antiknock coating 9 is 1.5mm. The function is to protect the protective steel plate 3 and absorb energy.
The example was tested for an explosion equivalent against 8kg TNT.
Example 5. The thickness of the protective steel plate 3 which requires the least for each explosion equivalent is determined by an antiknock test, and the thickness of the protective steel plate 3 is not less than the thickness determined by the test. Through experiments, the minimum thickness of the protective steel plate 3 against 6kg TNT explosion is 7mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 is not less than 0.5mm; the minimum thickness of the protective steel plate 3 against the explosion of 8kg TNT is 11mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 2mm; the minimum thickness of the protective steel plate 3 against 10kg TNT explosion is 16mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 6mm. The present embodiment differs from embodiment 1 in that: in this example, the thickness of the first antiknock coating 1 was chosen to be 9mm against a 10kg TNT explosion. The function is to protect the protection steel plate 3 from being broken and absorb energy. The thickness of the first glass fiber cloth laminated board 2 is 15mm of the thickness of the protective steel plate 3; the function is to absorb energy through fragmentation, block TNT high temperature, prevent fire and insulate against heat, absorb explosion energy.
The thickness of the protective steel plate 3 is 16mm, and the protective steel plate is used for blocking flying pieces and frameworks.
The thickness of the second glass fiber cloth laminated board 5 is 17mm of the thickness of the protective steel plate 3; blocking TNT high temperature, preventing fire and heat, absorbing explosion energy.
The thickness of the third antiknock coating 6 is 8mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the second antiknock coating 4 is 8mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the EPS hard polymer foam board 7 is 15mm; the function is to absorb energy.
The thickness of the third glass fiber cloth laminated board 8 is 16mm; the function is flame retarding and energy absorbing.
The thickness of the fourth antiknock coating 9 is 1.5mm. The function is to protect the protective steel plate 3 and absorb energy.
The present example was tested for an explosion equivalent against 10kg TNT.
Example 6. The present embodiment differs from embodiment 2 in that: the thickness of the first antiknock coating 1 is 10mm; the function is to protect the protection steel plate 3 from being broken and absorb energy.
The thickness of the protective steel plate 3 which requires the least for each explosion equivalent is determined by an antiknock test, and the thickness of the protective steel plate 3 is not less than the thickness determined by the test. Through experiments, the minimum thickness of the protective steel plate 3 against 6kg TNT explosion is 7mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 is not less than 0.5mm; the minimum thickness of the protective steel plate 3 against the explosion of 8kg TNT is 11mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 2mm; the minimum thickness of the protective steel plate 3 against 10kg TNT explosion is 16mm thick steel plate of N500-N650, and the thickness of the first antiknock coating 1 should not be less than 6mm. In this example, the thickness of the first antiknock coating 1 was chosen to be 6mm against a 10kg TNT explosion. The thickness of the first glass fiber cloth laminated board 2 is 20mm of the thickness of the protective steel plate 3; the function is to absorb energy through fragmentation, block TNT high temperature, prevent fire and insulate against heat, absorb explosion energy.
The thickness of the protective steel plate 3 is 16mm, and the protective steel plate is used for blocking flying pieces and frameworks.
The thickness of the second glass fiber cloth laminated board 5 is 20mm of the thickness of the protective steel plate 3; blocking TNT high temperature, preventing fire and heat, absorbing explosion energy.
The thickness of the third antiknock coating 6 is 10mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the second antiknock coating 4 is 10mm; the second glass fiber cloth laminate 5 is reinforced and the shock wave is buffered.
The thickness of the EPS hard polymer foam board 7 is 6-20mm; the function is to absorb energy. 15-20
The thickness of the third glass fiber cloth laminated board 8 is 20mm; the function is flame retarding and energy absorbing.
The thickness of the fourth antiknock coating 9 is 1.5mm. The function is to protect the protective steel plate 3 and absorb energy.
The present example was tested for an explosion equivalent against 10kg TNT.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, within the scope of the present invention, should be covered by the protection scope of the present invention by equally replacing or changing the technical scheme and the inventive concept thereof.
Claims (9)
1. The design method of the lightning-resistant composite armor plate of the vehicle is characterized by comprising the following steps of:
step 1: according to the equivalent of landmine explosion, selecting a protective steel plate (3); the explosion equivalent of the mine is 6-10kg TNT;
step 2: compounding a protective steel plate heat insulation layer (10) on the explosion-facing side of the protective steel plate (3); the protective steel plate heat insulation layer (10) comprises a first glass fiber cloth laminated board (2) and a first antiknock coating (1); the explosion-facing surface of the first glass fiber cloth laminated board (2) is sprayed with rigid polyurea to form a first anti-explosion coating (1);
step 3: compounding the first buffering energy absorbing layer (11) on the back explosion side of the protective steel plate (3); the first buffering energy absorbing layer (11) comprises a second glass fiber cloth laminated board (5), a second antiknock coating (4) and a third antiknock coating (6); the second antiknock coating (4) is formed by spraying flexible polyurea on the explosion-facing surface of the second glass fiber cloth laminated board (5); the third antiknock coating (6) is formed by spraying flexible polyurea on the back explosion surface of the second glass fiber cloth laminated board (5); the second antiknock coating (4) of the first buffering energy absorbing layer (11) is compounded on the back explosion side of the protective steel plate (3);
step 4: compounding an EPS hard polymer foam board (7) on the back explosion side of the first buffering energy absorbing layer (11);
step 5: compounding a second buffering energy absorbing layer (12) on the back explosion side of the EPS hard high polymer foam board (7); the second buffering energy absorbing layer (12) comprises a third glass fiber cloth laminated board (8) and a fourth antiknock coating (9); the fourth antiknock coating (9) is formed by spraying flexible polyurea on the back explosion surface of the third glass fiber cloth laminated board (8);
the compounding refers to bonding by using epoxy modified polyurethane adhesive.
2. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: the novel anti-explosion protection device comprises a first anti-explosion coating (1), a first glass fiber cloth laminated board (2), a protection steel plate (3), a second anti-explosion coating (4), a second glass fiber cloth laminated board (5), a third anti-explosion coating (6), an EPS hard polymer foam board (7), a third glass fiber cloth laminated board (8) and a fourth anti-explosion coating (9), wherein flexible polyurea is sprayed on the face, except the face, facing the explosion side and the face, of the back explosion side, of the fourth anti-explosion coating to form a radial protection surface layer (13).
3. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: in the step 1, the thickness of the protective steel plate (3) which is required to be minimum for each explosion equivalent is determined through antiknock test or simulation calculation, and the thickness of the protective steel plate (3) is not smaller than the thickness determined through the test or simulation calculation.
4. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: and selecting a steel plate with the model number of N500-N650 as the protective steel plate (3).
5. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: the thickness of the first anti-explosion coating (1) which is required to be minimum corresponding to each explosion equivalent is determined through an anti-explosion test or simulation calculation according to the requirement that the protective steel plate (3) is not broken in the anti-explosion process, and the thickness of the first anti-explosion coating (1) is not smaller than the thickness determined through the test or simulation calculation.
6. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: the thickness of the first antiknock coating (1) is 1-6mm.
7. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: the thickness of the first glass fiber cloth laminated board (2) is 4-20mm of the thickness of the protective steel plate (3); the thickness of the protective steel plate (3) is 8-20mm; the thickness of the second glass fiber cloth laminated board (5) is 4-20mm of the thickness of the protective steel plate (3); the thickness of the third antiknock coating (6) is 3-10mm; the thickness of the second antiknock coating (4) is 3-10mm; the thickness of the EPS hard polymer foam board (7) is 6-20mm; the thickness of the third glass fiber cloth laminated board (8) is 4-20mm; the thickness of the fourth antiknock coating (9) is 1-1.5mm.
8. A method of designing a vehicular lightning protection composite armor panel according to claim 1, wherein: the elongation at break of the first antiknock coating (1) is 65-105%, and the elongation at break of the second antiknock coating (4), the third antiknock coating (6) and the fourth antiknock coating (9) is not less than 250%.
9. Armor plate, its characterized in that: manufactured by the design method according to any one of claims 1-8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311638327.7A CN117570783A (en) | 2023-12-03 | 2023-12-03 | Design method of anti-thunder composite armor plate for vehicle and armor plate |
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| CN202311638327.7A CN117570783A (en) | 2023-12-03 | 2023-12-03 | Design method of anti-thunder composite armor plate for vehicle and armor plate |
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