CN110044211A - A kind of bulletproof halmet lining components - Google Patents
A kind of bulletproof halmet lining components Download PDFInfo
- Publication number
- CN110044211A CN110044211A CN201910290472.8A CN201910290472A CN110044211A CN 110044211 A CN110044211 A CN 110044211A CN 201910290472 A CN201910290472 A CN 201910290472A CN 110044211 A CN110044211 A CN 110044211A
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- China
- Prior art keywords
- lining components
- protector
- bulletproof halmet
- resin
- carbon fiber
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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
- F41H1/00—Personal protection gear
- F41H1/04—Protection helmets
-
- 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
- F41H1/00—Personal protection gear
- F41H1/04—Protection helmets
- F41H1/08—Protection helmets of plastics; Plastic head-shields
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
The present invention relates to bulletproof halmet technical field more particularly to a kind of bulletproof halmet lining components.The lining components include: liner housing and reinforce protector, and the liner housing and the shape of helmet helmet shell match；The key protection position reinforced protector and liner housing is set；The lining components are combined using impregnated carbon fiber thermosetting resin, and the carbon fiber is that two-dimensional fabric or one-way fabric are arranged with orthogonal ply sequence；It is described to reinforce protector the mode of liner housing is arranged in including: that reinforce protector embedment key protection portion, reinforcement protector is covered in the key protection position setting；The reinforcement protector includes: solid plates or porous flake body.The present invention forms the lining components of composite construction using the compound impact resistance resin of high-performance carbon fibre, and protector patch is reinforced by setting at the key protection position of lining components, it realizes that helmet ballistic performance is strengthened, while increasing the ability of the resistance to deformation of bulletproof halmet.
Description
Technical field
The present invention relates to bulletproof halmet technical fields, specifically, being related to a kind of bulletproof halmet lining components.
Background technique
In background of invention, it is only intended to increase understanding of the overall background of the invention for disclosed information, without
Necessarily it is considered as recognizing or imply that information composition has become in any form to show well known to persons skilled in the art
There is technology.
Under the conditions of bulletproof halmet of composite material is current individual soldier or singly police handles hazard event or military combat, for individual
The important equipment of head security protection.Light high performance fibrous composite becomes the main material of bulletproof halmet at present,
Substitution metal bulletproof halmet becomes the mainstream that army and police equip comprehensively.However unit composite material quality bulletproof halmet due to
The mechanics and physicochemical characteristics of reinforcing fiber itself, there is also many impassable problems.For example, UHMWPE composite material
The high temperature creep-resisting characteristic of the helmet is larger, is easy to appear the poor problem of helmet resistance to deformation characteristic under high temperature environment, in addition, its
Projectile Penetration is resisted in the process there is also the larger problem of convex deflection is carried on the back, and may be caused indirectly to the similar blunt on head
Shocking damage；The aramid fiber composite material helmet is since the anti-ultraviolet ageing problem of fiber itself is serious, in long-term use process, is easy
There is the durability degree difference of the helmet and then the poor problem of helmet integral rigidity also occurs.
To sum up, present inventors believe that currently, the performance of the bulletproof halmet for the composite material quality that carbon fiber and resin are formed
It needs further to improve, in order to improve the mechanical characteristic and protective characteristic of bulletproof halmet.
Summary of the invention
In view of the above-mentioned deficiencies, the present invention is intended to provide a kind of bulletproof halmet lining components.The present invention uses high performance carbon
Fiber hybrid cooperates impact resistance resin to form the lining components of composite construction, and passes through at the key protection position of lining components
The component of special construction is set, realizes that helmet ballistic performance is strengthened, while increasing the ability of the resistance to deformation of bulletproof halmet.
To achieve the above object, the invention discloses following technical proposals:
A kind of bulletproof halmet lining components, the lining components include: liner housing and reinforcement protector, the liner shell
The shape of body and helmet helmet shell matches, in order to which liner housing can be arranged close to the inner surface of helmet helmet shell；The reinforcement
The key protection position of liner housing, the key protection position is arranged in protector are as follows: forehead, hindbrain, the crown and left and right
Ear.
The lining components are combined using impregnated carbon fiber thermosetting resin, wherein the carbon fiber is knitted for two dimension
Object or one-way fabric are arranged with orthogonal ply sequence.The effect of the thermosetting resin first is that carbon fiber wire is bonded in one
It rises, carbon fiber is made to form overall structure and the fibroplastic two-dimensional fabric of reinforcing carbon or one-way fabric.
It is described to reinforce protector the mode of liner housing is arranged in including: that reinforce protector embedment key protection portion, incite somebody to action
Reinforce protector and is covered in described key protection position setting etc..
Further, the reinforcement protector includes: solid plates or porous flake body.
Preferably, the solid plates be high-hardness ceramic piece, comprising: silicon carbide, silicon nitride, aluminium oxide, boron nitride,
Any one in boron carbide, the thickness of the plates can be adjusted flexibly according to shellproof design requirement.This kind of ceramic material is not
Only hardness is very high, and heat resistance is good, and better protective action can be played to keypoint part.
The porous flake body is also combined by impregnated carbon fiber thermosetting resin, wherein the carbon fiber is two dimension
Fabric or one-way fabric are arranged with orthogonal ply sequence.The effect of the thermosetting resin first is that carbon fiber wire is bonded in one
It rises, carbon fiber is made to form overall structure and the fibroplastic two-dimensional fabric of reinforcing carbon or one-way fabric.Using above-mentioned carbon fiber
When the material of dipping thermosetting resin composite construction prepares the reinforcement protector of porous structure, perforating press can be used and obtain porous knot
Structure.Porous aperture can be adjusted flexibly according to shellproof design requirement.
Preferably, the porous flake body includes borehole structure, square hole structure or honeycomb interlayer etc.；And it is described porous
The centerline axis parallel in the hole of structure (or is parallel to helmet helmet shell inner surface, the surface in the setting of the surface of liner housing
Refer to the surface at the place position of porous structure), present invention discover that: it is more in this way when reinforcing protector by extraneous impact force
Pore structure structure can be crushed to a certain extent, can play the role of good deformation buffer, to more absorb punching
Hit energy；It is arranged if it is by the central axis upright in the hole of porous structure in liner housing surface, then is difficult to play porous structure
Advantage.
In the present invention, the carbon fiber select T300, T700, T800, T1000 it is therein any one；The interior shirt portion
Part the preparation method comprises the following steps: by being immersed in thermosetting resin glue after carbon fibre fabric laying, then carry out heat cure molding, i.e.,
?；Or by after the carbon fibre fabric laying for having presoaked thermosetting resin, then borrows and carry out heat cure molding.
In the present invention, the thermosetting resin includes phenolic resin, epoxy resin, any one in unsaturated polyester resin
Kind.
Optionally, the liner housing can be part engraved structure, can mitigate the weight of lining components in this way, be convenient for
It carries.
Further, the modified resin of heat cure is filled in the hole of the porous flake body, the modified resin is by ring
Oxygen resin and modifying agent compound, and are stirred when compounding using ultrasonic vibration, and the quality of the modifying agent is modified resin quality
2-5%；The modifying agent by the silicon-dioxide powdery and montmorillonite of hf etching by forming, wherein the montmorillonite
Additive amount be epoxy resin quality 1.6-3.4%, the additive amount of the silicon-dioxide powdery is the 7- of epoxy resin quality
13%.
Further, the method for the silicon-dioxide powdery of the hf etching are as follows: silicon-dioxide powdery is added to the water,
It stirs evenly, the concentration that silicon dioxide powder weight 6-15% is then added is the hydrofluoric acid of 3-8mo l/L, wait react to no gas
Body is released；It can also be stirred when reaction, to accelerate the uniformity of reaction rate and reaction.
The advantages of this modified resin of the invention, is: being modified by modifying agent to epoxy resin, significantly improves ring
Then epoxy resin with above-mentioned performance is filled into the hole of porous structure, is had by the shock resistance of oxygen resin
There is the reinforcement protector of good shock resistance, to further increase the impact resistance of the helmet, Projectile Penetration is resisted in alleviation
The larger problem of the convex deflection of back of the helmet in the process；After filling above-mentioned modified resin, rushed reinforcing protector
When hitting, in addition to the deformation buffer that porous structure structure plays the role of, above-mentioned modified resin further can be carried out suction to impact
It receives.
This modified resin of the invention can be improved the main reason for shock resistance and heat resistance of epoxy resin
It is: a degree of etching is carried out by surface of the hydrofluoric acid to silicon-dioxide powdery, forms silica particles more
" hole " pattern, the silica of this pattern have huge surface area, and the interfacial bonding between epoxy resin acts on obtaining
Substantially enhance, one contributes to increase the resistance of epoxy resin deformation, second is that reinforce protector when by impact force, this shape
The silica of looks is since at the position being etched, there are some corner angle, to be easier to cause to generate in cured epoxy resin
Micro-crack also can further absorb impact energy during this generation micro-crack.And montmorillonite is after being added epoxy resin,
It is stirred by ultrasonic vibration, part epoxy enters in the layer structure of montmorillonite, increases the interlamellar spacing of montmorillonite, separately
Outside, modified silica is also entered simultaneously in the layer structure of montmorillonite, when such modified resin is filled into porous knot
After in the reinforcement protector of structure, the bending strength of epoxy resin can be reinforced, improve the ability for absorbing impact energy.
Compared with prior art, the present invention achieve it is following the utility model has the advantages that
(1) present invention mixes the lining components that cooperation impact resistance resin forms composite construction using high-performance carbon fibre,
And it realizes that helmet ballistic performance is strengthened by the component of setting special construction at the key protection position of lining components, increases simultaneously
Add the ability of the resistance to deformation of bulletproof halmet.
(2) present invention further improves the shock resistance for reinforcing protector by the reinforcement protector of design special construction
Performance and high temperature creep resistance, to preferably protect the significant points on head.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is the structural schematic diagram of bulletproof halmet lining components in 1-3 of the embodiment of the present invention.
Fig. 2 is arrangement schematic diagram of the lining components in the helmet in the embodiment of the present invention 4.
Fig. 3 is the structural schematic diagram of strengthening part in the embodiment of the present invention 5.
Fig. 4 is the structural schematic diagram of strengthening part in the embodiment of the present invention 8.
Attached drawing acceptance of the bid note respectively represents: 1- liner housing, 2- key protection position, 3- reinforce protector, 4- hollow out position,
5- helmet helmet shell,
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As described in background, currently, the rigidity of the bulletproof halmet of composite material quality and impact resistance stability
Problem generally needs further to improve, in order to improve the synthesis mechanical characteristic and protective characteristic of bulletproof halmet.Therefore, of the invention
A kind of bulletproof halmet lining components are proposed, the present invention is further illustrated now in conjunction with the drawings and specific embodiments.
Embodiment 1
A kind of bulletproof halmet lining components, with reference to Fig. 1, the lining components include: liner housing 1 and reinforce protector 3,
The liner housing 1 and the shape of helmet helmet shell match, in order to which liner housing 1 can be set close to the inner surface of helmet helmet shell
It sets；The key protection position 2 of liner housing 1, the key protection position is arranged in the protector 3 of reinforcing are as follows: forehead, after
Brain, the crown and left and right ear.The liner housing 1 is many places by the structure of hollow out, and hollow out position is as shown in figure 1 shown in 4.
The lining components use impregnated carbon fiber epoxy resin to be combined with a thickness of 4mm, wherein the carbon fiber
Dimension is T300, using plain weave arrangement fabric construction stack-design, by heat cure after epoxy resin-impregnated after carbon fibre fabric lamination
Molding, resin content are the 35% of lining components gross mass.
The reinforcement protector 3 is silicon carbide ceramics piece, and with a thickness of 2mm, length and width are 20mm, the silicon carbide ceramics
Piece is embedded in above-mentioned key protection portion.
Embodiment 2
A kind of bulletproof halmet lining components, with embodiment 1, difference is: the lining components are with a thickness of 5mm, using carbon
Fiber impregnation phenolic resin is combined, wherein the carbon fiber is T800, is set using the orthogonal laminated of unidirectional arrangement fabric
Meter, heat cure after impregnated phenolic resin after carbon fibre fabric lamination is formed, and resin content is the 45% of lining components gross mass.
The reinforcement protector 3 is alumina ceramic plate, and with a thickness of 1mm, length and width are 25mm, the aluminium oxide ceramics
Piece is embedded in above-mentioned key protection portion.
Embodiment 3
A kind of bulletproof halmet lining components, with embodiment 1, difference is: the lining components use with a thickness of 4.5mm
Impregnated carbon fiber unsaturated polyester resin is combined, wherein the carbon fiber is T700, using the mostly folded of twill weave fabric
Layer design, heat cure forms after unsaturated polyester resin being impregnated after carbon fibre fabric lamination, and resin content is that lining components are total
The 40% of quality.
The reinforcement protector 3 is alumina ceramic plate, and with a thickness of 1mm, length and width are 30mm, the aluminium oxide ceramics
Piece is embedded in above-mentioned key protection portion.
Embodiment 4
A kind of bulletproof halmet lining components, with embodiment 1, difference is: the liner housing 1 is overall structure, that is, is not had
Have by hollow out.The lining components are combined with a thickness of 4.5mm using impregnated carbon fiber unsaturated polyester resin, wherein institute
Unsaturated polyester (UP) will be impregnated after carbon fibre fabric lamination using more stack-designs of twill weave fabric for T1000 by stating carbon fiber
Heat cure forms after resin, and resin content is the 40% of lining components gross mass.
The reinforcement protector 3 is silicon nitride ceramics piece, and with a thickness of 1.5mm, length and width are 28mm, the silicon nitride pottery
Tile is embedded in above-mentioned key protection portion.
The lining components of the present embodiment are connected by screw bolts mode and are fixed on the inner wall of helmet helmet shell 5 (with reference to Fig. 2), institute
The material for stating helmet helmet shell is aramid fiber composite material.
Embodiment 5
A kind of bulletproof halmet lining components, with embodiment 1, difference is:
(1) liner housing 1 is overall structure, i.e., not by hollow out.
(2) the reinforcement protector 3 is porous flake body (referring to Fig. 3), and the reinforcement protector 3 pastes liner housing 1
On, it pastes position and corresponds to the key protection portion, and the centerline axis parallel in the hole of the porous structure is in the table of liner housing 1
Face setting, or it is parallel to helmet helmet shell inner surface, the surface refers to the surface at the place position of porous structure.
The porous flake body is combined by impregnated carbon fiber phenolic resin, wherein the carbon fiber is T800, is used
The orthogonal laminated design of unidirectional arrangement fabric, heat cure after impregnated phenolic resin after carbon fibre fabric lamination is formed, carbon is obtained
Fiber/phenolic resin sandwich, wherein resin content is the 50% of lining components gross mass；Then perforating press is used
Sandwich processing to obtaining, obtains porous flake body, and aperture is set as 1mm when processing.
Embodiment 6
A kind of bulletproof halmet lining components, with embodiment 5, difference is: filled with heat in the hole of the porous flake body
Cured modified resin, the modified resin are compounded by epoxy resin and modifying agent, are stirred when compounding using ultrasonic vibration,
Porous flake body is entered the modified resin compounded to be filled, then carries out heat cure；It is specific:
The quality of the modifying agent is the 2.8% of modified resin quality；The modifying agent is by by the two of hf etching
Silica powder and montmorillonite composition, wherein the additive amount of the montmorillonite is the 2.0% of epoxy resin quality, the dioxy
The additive amount of SiClx powder is the 10% of epoxy resin quality.
The method of the silicon-dioxide powdery of the hf etching are as follows: silicon-dioxide powdery is added to the water, is stirred evenly,
Then the concentration that silicon dioxide powder weight 6% is added is the hydrofluoric acid of 8mo l/L, side border ring stirring, wait react to no gas
Body is released.
Embodiment 7
A kind of bulletproof halmet lining components, with embodiment 6, difference is: the hole of the porous flake body is square, punching
The side length in hole is set as 1mm when the processing of hole machine；In the modified resin for the heat cure filled in the hole, the quality of the modifying agent
It is the 5% of modified resin quality；The additive amount of the montmorillonite is the 1.6% of epoxy resin quality, the silicon-dioxide powdery
Additive amount be epoxy resin quality 7%.
The method of the silicon-dioxide powdery of the hf etching are as follows: silicon-dioxide powdery is added to the water, is stirred evenly,
Then the concentration that silicon dioxide powder weight 15% is added is the hydrofluoric acid of 3mo l/L, side border ring stirring, wait react to no gas
Body is released.
Embodiment 8
A kind of bulletproof halmet lining components, with embodiment 6, difference is: the porous flake body is honeycomb interlayer (reference
Fig. 4), hole is hexagon, aperture 1mm；In the modified resin for the heat cure filled in the hole, the quality of the modifying agent
It is the 2% of modified resin quality；The additive amount of the montmorillonite is the 3.4% of epoxy resin quality, the silicon-dioxide powdery
Additive amount be epoxy resin quality 13%.
The method of the silicon-dioxide powdery of the hf etching are as follows: silicon-dioxide powdery is added to the water, is stirred evenly,
Then the concentration that silicon dioxide powder weight 10% is added is the hydrofluoric acid of 5mo l/L, side border ring stirring, wait react to no gas
Body is released.
Embodiment 9
A kind of bulletproof halmet lining components, with embodiment 1, difference is: the key protection position is not set to be reinforced preventing
Guard.
Performance test:
Impact resistance test is carried out to key protection position at five in the liner housing of embodiment 1-9 preparation, and is calculated
Average value, the results are shown in Table 1:
Table 1
| Embodiment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Impact flexibility (KJ/cm2) | 11.6 | 14.4 | 12.7 | 10.5 | 16.9 | 25.3 | 30.3 | 27.7 | 4.4 |
As can be seen that embodiment 1-8's is provided with the anti-of the key protection position for reinforcing protector relative to embodiment 9
Impact property has obtained effective promotion, this mainly reinforces protector and is able to bear stronger impact force, thus to emphasis portion
Play better protective action in position.From embodiment 1-4 and embodiment 5 as can be seen that the reinforcement protector of porous structure can
Impact is preferably resisted, this is because the reinforcement protector of porous structure can be to a certain degree when by extraneous impact force
On be crushed, good deformation buffer can be played the role of, to more absorb impact energy.From the test of embodiment 5 and 6-8
After data can be seen that filling-modified epoxy resin in the porous structure for reinforcing protector, the anti-impact at key protection position
Hitting property is had been further upgraded；And relative to embodiment 1-4,9, the filling-modified ring in the porous structure for reinforcing protector
After oxygen resin, the impact resistance at key protection position has obtained significantly more promotion, this is primarily due to: by modifying agent pair
Epoxy resin is modified, and significantly improves the shock resistance of epoxy resin, then by the epoxy resin with above-mentioned performance
It is filled into the hole of porous structure, the reinforcement protector with excellent impact resistance energy is obtained, to further increase the helmet
Impact resistance alleviates the larger problem of the convex deflection of back of the helmet during resisting Projectile Penetration；By filling above-mentioned modification
After resin, when reinforcement protector is impacted, in addition to the deformation buffer that porous structure structure plays the role of, above-mentioned modified resin
Absorption further can be carried out to impact.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of bulletproof halmet lining components, which is characterized in that the lining components include: liner housing and reinforce protector,
The liner housing and the shape of helmet helmet shell match；The key protection portion for reinforcing protector and liner housing being set
Position；
The lining components are combined using impregnated carbon fiber thermosetting resin, wherein the carbon fiber be two-dimensional fabric or
One-way fabric is arranged with orthogonal ply sequence；
It is described to reinforce protector the mode of liner housing is arranged in including: that reinforce protector embedment key protection portion, will reinforce
Protector is covered in the key protection position setting；The reinforcement protector includes: solid plates or porous flake body.
2. bulletproof halmet lining components as described in claim 1, which is characterized in that the key protection position are as follows: forehead, after
Brain, the crown and left and right ear.
3. bulletproof halmet lining components as described in claim 1, which is characterized in that the solid plates are high-hardness ceramic
Piece, comprising: silicon carbide, silicon nitride, aluminium oxide, boron nitride, any one in boron carbide.
4. bulletproof halmet lining components as described in claim 1, which is characterized in that the porous flake body is by impregnated carbon fiber
Thermosetting resin is combined, wherein the carbon fiber is that two-dimensional fabric or one-way fabric are arranged with orthogonal ply sequence.
5. bulletproof halmet lining components as claimed in claim 4, which is characterized in that the porous flake body includes circular hole knot
Structure, square hole structure or honeycomb interlayer；And the centerline axis parallel in the hole of the porous structure is set in the surface of liner housing
It sets, or is parallel to helmet helmet shell inner surface, the surface refers to the surface at the place position of porous structure.
6. bulletproof halmet lining components as described in claim 4 or 5, which is characterized in that filled out in the hole of the porous flake body
Modified resin filled with heat cure, the modified resin are compounded by epoxy resin and modifying agent, using ultrasound vibration when compounding
Dynamic stirring, the quality of the modifying agent are the 2-5% of modified resin quality；The modifying agent is by the dioxy by hf etching
SiClx powder and montmorillonite composition, wherein the additive amount of the montmorillonite be epoxy resin quality 1.6-3.4%, described two
The additive amount of silica powder is the 7-13% of epoxy resin quality.
7. bulletproof halmet lining components as claimed in claim 6, which is characterized in that the silicon dioxide powder of the hf etching
The method of body are as follows: silicon-dioxide powdery is added to the water, is stirred evenly, the dense of silicon dioxide powder weight 6-15% is then added
Degree is the hydrofluoric acid of 3-8mo l/L, is released wait react to no gas；Preferably, it is stirred when reaction.
8. such as claim 1-5,7 described in any item bulletproof halmet lining components, which is characterized in that the carbon fiber is selected
T300, T700, T800, T1000 it is therein any one.
9. such as claim 1-5,7 described in any item bulletproof halmet lining components, which is characterized in that the thermosetting resin packet
Include phenolic resin, epoxy resin, any one in unsaturated polyester resin.
10. such as claim 1-5,7 described in any item bulletproof halmet lining components, which is characterized in that the liner housing is
Part engraved structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290472.8A CN110044211B (en) | 2019-04-11 | 2019-04-11 | Lining part of bulletproof helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290472.8A CN110044211B (en) | 2019-04-11 | 2019-04-11 | Lining part of bulletproof helmet |
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| Publication Number | Publication Date |
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| CN110044211A true CN110044211A (en) | 2019-07-23 |
| CN110044211B CN110044211B (en) | 2022-07-22 |
Family
ID=67276870
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| CN201910290472.8A Active CN110044211B (en) | 2019-04-11 | 2019-04-11 | Lining part of bulletproof helmet |
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|---|---|---|---|---|
| CN113439906A (en) * | 2021-06-17 | 2021-09-28 | 江西联创电声有限公司 | Helmet body of aviation protection helmet and preparation method thereof |
| CN113439906B (en) * | 2021-06-17 | 2023-08-11 | 江西联创电声有限公司 | Aviation protection helmet body and preparation method thereof |
| CN114018093A (en) * | 2021-10-22 | 2022-02-08 | 山东宽原新材料科技有限公司 | Back-convex-resistant composite lining part, bulletproof helmet and preparation method |
| CN114018093B (en) * | 2021-10-22 | 2023-12-05 | 山东宽原新材料科技有限公司 | Anti-back-protruding composite lining part, bulletproof helmet and preparation method |
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| CN110044211B (en) | 2022-07-22 |
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