CN108332615B - Bulletproof shelter plate - Google Patents

Bulletproof shelter plate Download PDF

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Publication number
CN108332615B
CN108332615B CN201810087736.5A CN201810087736A CN108332615B CN 108332615 B CN108332615 B CN 108332615B CN 201810087736 A CN201810087736 A CN 201810087736A CN 108332615 B CN108332615 B CN 108332615B
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CN
China
Prior art keywords
layer
bulletproof
honeycomb structure
silicon carbide
carbide ceramic
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Active
Application number
CN201810087736.5A
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Chinese (zh)
Other versions
CN108332615A (en
Inventor
江怡
杨勇
黄健
梁眉华
王良模
陈威
沙小伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Science and Technology
Suzhou Jiangnan Aerospace Mechanical and Electrical Industry Co Ltd
Original Assignee
Nanjing University of Science and Technology
Suzhou Jiangnan Aerospace Mechanical and Electrical Industry Co Ltd
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Application filed by Nanjing University of Science and Technology, Suzhou Jiangnan Aerospace Mechanical and Electrical Industry Co Ltd filed Critical Nanjing University of Science and Technology
Priority to CN201810087736.5A priority Critical patent/CN108332615B/en
Publication of CN108332615A publication Critical patent/CN108332615A/en
Application granted granted Critical
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Classifications

    • 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
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • F41H5/007—Reactive armour; Dynamic armour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates or anti-ballistic clothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention provides a bulletproof shelter plate, which comprises the following components: an outer layer, a bulletproof layer and an inner layer, wherein the bulletproof layer is positioned between the outer layer and the inner layer; the bulletproof layer comprises: the silicon carbide ceramic layer, aramid fiber composite material layer, honeycomb structure layer, silicon carbide ceramic layer, aramid fiber composite material layer, honeycomb structure layer set up between skin and inlayer in proper order range upon range of, and outer complex on the silicon carbide ceramic layer, inlayer complex on honeycomb structure layer, honeycomb structure layer includes a plurality of structural units of arranging in three-dimensional array form, arbitrary structural unit includes: the first connecting point, the second connecting point, the U-shaped piece and the connecting rod. The invention has good energy absorption effect, and simultaneously, when the honeycomb structure layer is compressed, the structure generates shrinkage effect in the direction perpendicular to the compression direction, thereby improving the rigidity of the structure and being beneficial to further absorbing the kinetic energy of bullets. In addition, the invention reduces the thickness of the plate material and meets the light weight requirement of the bulletproof shelter while preventing bullets and preserving heat.

Description

Bulletproof shelter plate
Technical Field
The invention relates to a plate, in particular to a bulletproof shelter plate.
Background
When the bulletproof shelter performs battlefield tasks, the bulletproof shelter is required to have certain bulletproof performance in order to ensure the safety of personnel and equipment. In order to ensure good bulletproof performance, a foam aluminum plate with a certain thickness is usually added into the plate of the existing bulletproof shelter, so that the thickness of the plate is further increased, the plate cannot meet the light weight requirement of the bulletproof shelter, and the maneuverability of the bulletproof shelter is further affected. Therefore, in view of the above problems, it is necessary to propose a further solution.
Disclosure of Invention
The invention aims to provide a bulletproof shelter plate which overcomes the defects in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a ballistic shelter panel comprising: an outer layer, a bulletproof layer and an inner layer, wherein the bulletproof layer is positioned between the outer layer and the inner layer;
The ballistic layer comprises: the structure comprises a silicon carbide ceramic layer, an aramid fiber composite material layer and a honeycomb structure layer, wherein the silicon carbide ceramic layer, the aramid fiber composite material layer and the honeycomb structure layer are sequentially arranged between the outer layer and the inner layer in a laminated mode, the outer layer is compounded on the silicon carbide ceramic layer, the inner layer is compounded on the honeycomb structure layer, the honeycomb structure layer comprises a plurality of structural units which are arranged in a three-dimensional array mode, and any structural unit comprises: the U-shaped piece is four, two arms of any U-shaped piece incline towards each other, one end of any U-shaped piece is connected with the first connecting point, the other end of any U-shaped piece is connected with the second connecting point, the four U-shaped pieces are cross-shaped, one end of the connecting rod is connected with the first connecting point, and the other end of the connecting rod is connected with the second connecting point of a structural unit adjacent to one side.
As an improvement of the bulletproof shelter plate, the outer layer is an outer skin layer, the inner layer is an inner skin layer, the thickness of the outer skin layer is 1-2mm, and the thickness of the inner skin layer is 1-2mm.
As an improvement of the bulletproof shelter plate, the thickness of the silicon carbide ceramic layer is 5-6mm, the thickness of the aramid fiber composite material layer is 9-10mm, and the thickness of the honeycomb structure layer is 20-30mm.
As an improvement of the bulletproof shelter plate, the outer layer, the bulletproof layer and the inner layer are connected through bonding.
As an improvement of the bulletproof shelter plate, the silicon carbide ceramic layer, the aramid fiber composite material layer and the honeycomb structure layer in the bulletproof layer are connected in an adhesive mode.
As an improvement of the bulletproof shelter plate of the invention, when the extending direction of the connecting rod is the X direction, the adjacent structural units in the Y direction share the part between the two arms in the U-shaped piece, and the adjacent structural units in the Z direction share the part between the two arms in the U-shaped piece.
As an improvement of the bulletproof shelter plate of the invention, the honeycomb structure layer is also filled with polyurethane foam.
As an improvement of the bulletproof shelter plate, the bulletproof shelter plate further comprises a framework, and the aramid fiber composite material layer, the honeycomb structure layer and the inner layer are connected with the framework.
Compared with the prior art, the invention has the beneficial effects that: the bulletproof shelter plate has good energy absorption effect, and meanwhile, when the honeycomb structure layer is compressed, the structure generates a shrinkage effect in the direction perpendicular to the compression direction, so that the rigidity of the structure is improved, and the bulletproof shelter plate is favorable for further absorbing kinetic energy of bullets. In addition, the bulletproof shelter plate reduces the thickness of the plate while bulletproof and heat-preserving, and meets the requirement of the bulletproof shelter on light weight.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
Fig. 1 is a schematic layer structure of a bulletproof shelter plate of the invention;
Fig. 2 is a schematic perspective view of a honeycomb layer in a ballistic layer;
fig. 3 is a schematic perspective view of a structural unit in a honeycomb layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention provides a bulletproof shelter board, comprising: an outer layer 1, a bulletproof layer 2 and an inner layer 3, wherein the bulletproof layer 2 is positioned between the outer layer 1 and the inner layer 3.
The outer layer 1 and the inner layer 3 form the outer and inner surfaces of the ballistic shelter panel, respectively. In one embodiment, the outer layer 1 is an outer skin layer and the inner layer 3 is an inner skin layer. The skin layer is specifically a PVC plastic plate, and can effectively prevent corrosion and oxidation of the bulletproof shelter plate. Preferably, the thickness of the outer skin layer is 1-2mm, and the thickness of the inner skin layer is 1-2mm.
The ballistic layer 2 comprises: a silicon carbide ceramic layer 21, an aramid fiber composite material layer 22 and a honeycomb structure layer 23. The silicon carbide ceramic layer 21, the aramid fiber composite material layer 22 and the honeycomb structure layer 23 are sequentially laminated between the outer layer 1 and the inner layer 3, the outer layer 1 is compounded on the silicon carbide ceramic layer 21, and the inner layer 3 is compounded on the honeycomb structure layer 23.
In one embodiment, the outer layer 1, the bulletproof layer 2 and the inner layer 3 are connected by bonding. Further, the silicon carbide ceramic layer 21, the aramid fiber composite material layer 22 and the honeycomb structure layer 23 in the bulletproof layer 2 are connected in an adhesive mode.
According to the arrangement mode of the layer structure, as the silicon carbide ceramic layer 21 is positioned at the outermost side of the bulletproof layer 2, the silicon carbide ceramic layer 21 has extremely high strength and hardness, so that the bullets can be deformed and destroyed to the greatest extent when the bullets impact the bulletproof shelter plate, and the contact area between the bullets and the plate is increased.
Because the aramid fiber composite material layer 22 is positioned on the second layer of the bulletproof layer 2, after the bullet is fully deformed and has a larger contact area, the kinetic energy of the bullet is transmitted to a region far away from the impact through the stretching and breaking of the fiber and the layering of the material by utilizing the impact resistance of the aramid fiber composite material, so that the kinetic energy of the bullet is further absorbed.
Since the honeycomb layer 23 is located in the third layer of the ballistic layer 2, it contracts when compressed in a direction perpendicular to the compression direction, thereby increasing the stiffness of the honeycomb layer 23 and enhancing the ballistic performance of the ballistic shelter panel.
The silicon carbide ceramic layer 21 and the aramid fiber composite material layer 22 are known materials, and can well absorb the kinetic energy of the shot bullets. Preferably, the thickness of the silicon carbide ceramic layer 21 is 5-6mm, and the thickness of the aramid fiber composite material layer 22 is 9-10mm.
As shown in fig. 2 and 3, the honeycomb structure layer 23 includes a plurality of structural units 230 arranged in a three-dimensional array, and any one of the structural units 230 includes: a first connection point 231, a second connection point 232, a U-shaped member 233, and a link 234. Preferably, the thickness of the honeycomb-structure layer 23 is 20-30mm.
Specifically, the number of the U-shaped members 233 is four, two arms of any one U-shaped member 233 are disposed obliquely in opposite directions, one end of any one U-shaped member 233 is connected to the first connection point 231, and the other end is connected to the second connection point 232. Preferably, the four U-shaped members 233 are cross-shaped. Meanwhile, one end of the link 234 is connected to the first connection point 231, and the other end of the link 234 is connected to the second connection point 232 of the structural unit 230 adjacent to one side. So arranged, the honeycomb layer 23, when compressed, produces a shrinking effect in the direction perpendicular to the compression direction, thereby increasing the rigidity of the structure and facilitating the further absorption of the kinetic energy of the bullet.
In one embodiment, since the structural units 230 in the honeycomb-structure layer 23 are arranged in an array in three-dimensional space, when the extending direction of the link 234 is the X direction, the portion between the two arms in the U-shaped member 233 is shared between the structural units 230 adjacent in the Y direction, and at the same time, the portion between the two arms in the U-shaped member 233 is shared between the structural units 230 adjacent in the Z direction.
In order to provide the bulletproof shelter plate with good heat insulation performance, the honeycomb structure layer 23 is also filled with polyurethane foam 24.
Furthermore, the bulletproof shelter plate comprises a framework 4, wherein the framework 4 is embedded in the honeycomb structure layer 23. Meanwhile, the aramid fiber composite material layer 22, the honeycomb structure layer 23 and the inner layer 3 are bonded with the framework 4.
In summary, the bulletproof shelter plate has good energy absorption effect, and meanwhile, when the honeycomb structure layer is compressed, the structure has a shrinkage effect in the direction perpendicular to the compression direction, so that the rigidity of the structure is improved, and the bulletproof shelter plate is beneficial to further absorbing kinetic energy of bullets. In addition, the bulletproof shelter plate reduces the thickness of the plate while bulletproof and heat-preserving, and meets the requirement of the bulletproof shelter on light weight.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A ballistic shelter panel, the ballistic shelter panel comprising: an outer layer, a bulletproof layer and an inner layer, wherein the bulletproof layer is positioned between the outer layer and the inner layer;
The outer layer is an outer skin layer, the inner layer is an inner skin layer, the thickness of the outer skin layer is 1-2mm, and the thickness of the inner skin layer is 1-2mm; the outer layer, the bulletproof layer and the inner layer are connected in an adhesive mode;
The ballistic layer comprises: the structure comprises a silicon carbide ceramic layer, an aramid fiber composite material layer and a honeycomb structure layer, wherein the silicon carbide ceramic layer, the aramid fiber composite material layer and the honeycomb structure layer are sequentially arranged between the outer layer and the inner layer in a laminated mode, the outer layer is compounded on the silicon carbide ceramic layer, the inner layer is compounded on the honeycomb structure layer, the honeycomb structure layer comprises a plurality of structural units which are arranged in a three-dimensional array mode, and any structural unit comprises: the U-shaped piece is four, two arms of any U-shaped piece incline towards each other, one end of any U-shaped piece is connected with the first connecting point, the other end of any U-shaped piece is connected with the second connecting point, the four U-shaped pieces are cross-shaped, one end of the connecting rod is connected with the first connecting point, and the other end of the connecting rod is connected with the second connecting point of a structural unit adjacent to one side.
2. The ballistic shelter panel of claim 1, wherein the silicon carbide ceramic layer has a thickness of 5-6mm, the aramid fiber composite layer has a thickness of 9-10mm, and the honeycomb layer has a thickness of 20-30mm.
3. The bulletproof shelter plate material of claim 1, wherein the silicon carbide ceramic layer, the aramid fiber composite material layer and the honeycomb structure layer in the bulletproof layer are connected through bonding.
4. The ballistic shelter panel of claim 1, wherein when the extension direction of the tie rod is X-direction, the structural units adjacent in Y-direction share the part between the two arms in the U-shaped member and the structural units adjacent in Z-direction share the part between the two arms in the U-shaped member.
5. The ballistic shelter panel of claim 1, wherein the honeycomb layer is further filled with polyurethane foam.
6. The ballistic shelter panel of claim 1, further comprising a framework, the aramid fiber composite layer, honeycomb layer, inner layer being connected to the framework.
CN201810087736.5A 2018-01-30 2018-01-30 Bulletproof shelter plate Active CN108332615B (en)

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CN108332615B true CN108332615B (en) 2024-07-09

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Publication number Priority date Publication date Assignee Title
CN110299598B (en) * 2019-05-24 2021-02-09 北京卫星制造厂有限公司 Aramid fiber skin-paper honeycomb sandwich cylindrical shell structure and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN208000077U (en) * 2018-01-30 2018-10-23 苏州江南航天机电工业有限公司 Shellproof shelter plank

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Publication number Priority date Publication date Assignee Title
US20060093847A1 (en) * 2004-11-02 2006-05-04 United Technologies Corporation Composite sandwich with improved ballistic toughness
US20070293107A1 (en) * 2006-06-14 2007-12-20 Hexcel Corporation Composite assembly and methods of making and using the same
JP2009121774A (en) * 2007-11-16 2009-06-04 Kyocera Chemical Corp Composite bulletproof plate
CN105135947A (en) * 2015-09-18 2015-12-09 成都乐也科技有限公司 Lightweight composite bulletproof plate containing gradient-distributed foam aluminum layer
CN105737675A (en) * 2016-03-15 2016-07-06 中国航天科工集团第六研究院二一○所 High-performance bulletproof shelter

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Publication number Priority date Publication date Assignee Title
CN208000077U (en) * 2018-01-30 2018-10-23 苏州江南航天机电工业有限公司 Shellproof shelter plank

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