CN105841551B - Bionic energy-absorbing buffering bulletproof helmet lining - Google Patents
Bionic energy-absorbing buffering bulletproof helmet lining Download PDFInfo
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- CN105841551B CN105841551B CN201610330990.4A CN201610330990A CN105841551B CN 105841551 B CN105841551 B CN 105841551B CN 201610330990 A CN201610330990 A CN 201610330990A CN 105841551 B CN105841551 B CN 105841551B
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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
- F41H1/08—Protection helmets of plastics; Plastic head-shields
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Abstract
The invention discloses a bionic energy-absorbing buffering bulletproof helmet lining which consists of an anti-penetration scale structure, a composite energy-absorbing sponge body and a multilayer staggered Kevlar fiber lining, wherein the composite energy-absorbing sponge body is fixedly arranged on the multilayer staggered Kevlar fiber lining; the anti-penetration scale structure can effectively reduce the impact angle of the projectile and the elastic sheet to the helmet, reduce the structural weight and reduce the load of fighters; the composite energy-absorbing sponge body realizes the buffer protection effect on organs such as cervical vertebra, brain and the like of a person; the multilayer staggered Kevlar fiber lining is formed by sticking multiple layers of Kevlar fiber cloth layer by layer according to a certain rotation angle, has good strength in all directions, and further improves the penetration resistance of the lining.
Description
Technical Field
The invention relates to the technical field of helmets, in particular to a bionic energy-absorbing buffering bulletproof helmet liner.
Background
In modern war, the lethality of offensive weapon is getting bigger and bigger, and the lethality to the fighter is getting higher and higher, and individual soldier's self-protection becomes the important means and the method that improve the fighter's survival rate, and the protection to the head has very important effect to the guarantee fighter life safety, and at present, adopts novel structural design bulletproof helmet, and domestic and foreign all has relevant patent reports as follows:
1. chinese patent, publication No. CN204649082U, publication No. 2015-09-16, application No. CN201520122617.0, entitled "bulletproof helmet and mold set thereof", discloses a bulletproof helmet and mold set thereof, wherein a plurality of tightly bonded first and second overlapped fiber layers are used to extend bulletproof fibers of the first fiber layer in a first direction and bulletproof fibers of the second fiber layer in a second direction, the first direction is different from the second direction, so as to solve the problems of the prior bulletproof helmet, such as difficulty in reducing material cost and poor strength;
2. chinese patent, publication date 2014-12-24, application number CN201410472277.4, title of the invention "a multifunctional composite bulletproof helmet and manufacturing method thereof", discloses a multifunctional composite bulletproof helmet and manufacturing method thereof, wherein the bulletproof helmet is prepared by making two or more of high-performance carbon fiber, aramid fiber and ultra-high molecular weight polyethylene fiber into a mixed fabric, then making the mixed fabric into a prepreg with a thermosetting/thermoplastic composite resin adhesive containing special filler, carrying out die pressing by a multi-material combined laying technology, embedding an electronic information part between prepreg layers in the die pressing process, and the bulletproof helmet formed by the technology comprises a rigid reinforcing layer, a bulletproof layer, a back convex prevention layer, a buffer layer, an embedded electronic information module and other multiple structures, and has the advantages of light weight, high strength, high rigidity, corrosion resistance, low back convex prevention, low cost, high safety, and the like, The waterproof performance is good, and various electronic information functions such as infrared stealth, GPS positioning, night vision, video transmission and the like are integrated;
3. the invention discloses a military rotary double-layer bulletproof helmet, which is characterized in that a Chinese patent, which has a publication date of 2015-06-03 and an application number of CN201510313297.1, is named as a military rotary double-layer bulletproof helmet and comprises double layers, wherein two bearings are arranged on the inner side of the top of the helmet body, a fixed groove ring of a large bearing outer ring is fixed on the top of an outer-layer helmet body, an inner ring of a small bearing is fastened with the top of a second-layer helmet body through a shaft and a fixing wire, the bearings generate rotary kinetic energy through the non-uniform external pressure to realize a required bulletproof result, the damage of bullets to the head of a human body in war is reduced, two fixing eyes can be arranged on the side surface of the helmet body, the helmet body is fastened through fixing pins, and the;
4. the invention discloses a multifunctional bulletproof helmet, which comprises a helmet main body, wherein a night-vision illuminating lamp is arranged on the front side of the helmet main body after being worn, storage bags are arranged on the left side, the right side and the rear side of the outer surface of the helmet main body, magic tapes are arranged on the upper part of the helmet main body, an elastic rope arranged along the brim is arranged at the bottom of the helmet main body, a cushion pad is arranged in the inner cavity of the helmet main body, an antiskid rubber ring is arranged at the bottom of the inner cavity of the helmet main body, and air holes penetrating through the antiskid rubber ring up and down are formed in the antiskid rubber ring;
5. the Chinese patent with publication date of 2014-12-10 and application number of CN201420446190.5, the invention name of which is 'bulletproof helmet with built-in bulletproof ceramic', discloses a bulletproof helmet with built-in bulletproof ceramic, which comprises a shell and a suspension part, and is characterized in that: the shell comprises a back lining layer, a bulletproof ceramic layer, a sputtering-proof layer and a surface appearance layer from inside to outside in sequence, wherein the back lining layer is bonded on the inner surface of the bulletproof ceramic layer, the sputtering-proof layer is bonded on the outer surface of the bulletproof ceramic layer, and the surface appearance layer is bonded on the outer surface of the sputtering-proof layer;
the existing bulletproof helmet is defended against bullets and elastic sheets by improving the strength of the helmet and designing an energy absorption structure, along with the improvement of the performance of an aggressive weapon, the requirements of individual soldier protection cannot be met by adopting methods such as structural optimization and material reinforcement, the lining of the bionic helmet is lacked, the impact angle of the bullets and the elastic sheets on the helmet is large, the penetration resistance of the helmet is low, the impact energy absorption capacity is poor, and the buffer protection capacity on organs such as cervical vertebrae and brain of a person is low.
Disclosure of Invention
The lining of the bionic energy-absorbing buffering bulletproof helmet aims to solve the problems that the existing bulletproof helmet can not meet the requirements of individual soldier protection due to the fact that the existing bulletproof helmet is used for defending both the projectile and the elastic sheet in a mode of improving the strength of the helmet and designing an energy-absorbing structure, the lining of the bionic helmet is lacked, the impact angle of the projectile and the elastic sheet on the helmet is large, the penetration-resistant capability of the helmet is low, the impact-absorbing energy is poor, the buffering protection capability on organs such as cervical vertebrae and brain of a person is low, and the like.
The invention is composed of a lining, a composite energy absorption sponge body and a multilayer staggered Kevlar fiber lining, wherein the composite energy absorption sponge body is fixedly arranged on the multilayer staggered Kevlar fiber lining, and the anti-penetration scale structure of a clam-like shell is fixedly arranged on the composite energy absorption sponge body;
the penetration-resistant scale structure comprises the following components in percentage by mass:
55-75% of epoxy resin, 5-20% of dimethylbenzene, 5-20% of boron trifluoride, 0.5-1.5% of nano silicon carbide whisker, 0.5-1.5% of nano TiO2 particle, 0.5-1.5% of nano TiB particle, 2.5-6% of short carbon fiber and 0.5-1.5% of nano Al2O3 particle;
the preparation method of the penetration-resistant scale structure comprises the following steps:
mixing nano silicon carbide whiskers, nano TiO2 particles, nano TiB particles, short carbon fibers and epoxy resin, adding dimethylbenzene and boron trifluoride into the mixture, and performing structural curing by adopting a special forming die at the temperature of T1, wherein the temperature of T1 is more than or equal to 80 ℃ and less than or equal to 240 ℃, the curing time is T1, and the time of T1 is more than or equal to 2h and less than or equal to 48 h;
the outer contour of the penetration-resistant scale structure is formed by rotating 4 curves which satisfy the following equation around an X axis, the rotation angle is theta 1, and the theta 1 is more than or equal to 30 degrees and less than or equal to 45 degrees:
x2+(y-n1)2＝R2x≥0，y≥R (1)
y＝-k1x2+2n1x≤0 (2)
(x-R·cosθ2)2+(y-R·sinθ2)2＝R2x≤0 (3)
x2+(y-k2n1)2＝R2x≥0 (4)
wherein R is the size parameter of the bionic scale, R is more than or equal to 4mm and less than or equal to 12mm, n1、k1、k2And theta2Respectively is the structural parameter of the scale, n is more than or equal to 3mm1≤15mm，0.03≤k1≤0.45，1.4≤k2≤2.2，25°≤θ2≤45°；
The anti-penetration scale structure is provided with a plurality of anti-penetration scales, a diamond arrangement mode is adopted, the included angle between the center of the front row of scales and the center of the two adjacent rear rows of scales is theta 3, wherein theta 3 is more than or equal to 45 degrees and less than or equal to 75 degrees;
the composite energy-absorbing sponge body is composed of a high-resilience sponge and non-Newtonian energy-absorbing fluid filled in the high-resilience sponge body, the volume ratio of the high-resilience sponge to the non-Newtonian energy-absorbing fluid is n, wherein n is more than or equal to 0.25 and less than or equal to 0.75;
the non-Newtonian energy absorption fluid comprises the following components in percentage by volume:
polyacrylamide: 0 to 14 percent; polyvinyl chloride: 0 to 12.5 percent; nylon 13: 0 to 17.5; diethylene glycol ethyl ether acetate: 35% -65.5%; diethylene glycol ethyl ether: 15% -25%;
the multilayer staggered Kevlar fiber bushing is formed by bonding n2 layers of Kevlar fiber cloth through flexible potting adhesive, wherein n2 is more than or equal to 3 and less than or equal to 6, a corner theta is formed between every two layers of Kevlar fiber cloth, theta is more than or equal to 15 degrees and less than or equal to 30 degrees, and the flexible potting adhesive is adopted to bond the bushing into a sealed bushing.
The principle and the beneficial effects of the invention are as follows:
anti-penetration scale structure: the outer contour of the penetration-resistant scale of the clam-like shell has larger curvature than the contour of the helmet, the impact angle of the projectile and the shrapnel on the helmet can be effectively reduced, the penetration-resistant scale stacking arrangement mode of the clam-like shell and the particle-reinforced high-strength resin material can effectively improve the penetration-resistant capability of the helmet, the resin-based material has higher specific strength, the structural weight is reduced, and the load of fighters is reduced;
compounding an energy absorption sponge body: the non-Newtonian energy fluid is divided into small units through the high-resilience sponge, and when the bullet is impacted, the impact energy can be absorbed to the maximum extent through the solidification effect of the non-Newtonian fluid in the small units, so that the buffer protection effect on organs such as cervical vertebra, brain and the like of a person is realized;
multilayer staggered Kevlar fiber bushings: the multilayer staggered Kevlar fiber lining is formed by sticking multiple layers of Kevlar fiber cloth layer by layer according to a certain rotation angle, has good strength in all directions, and further improves the penetration resistance of the lining.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a sectional line structure diagram of the penetration-resistant scale of the present invention.
FIG. 3 is a schematic structural view of a composite energy absorbing sponge of the present invention.
Detailed Description
Referring to fig. 1, fig. 2 and fig. 3, the embodiment is composed of a lining made of an anti-penetration scale structure 1, a composite energy-absorbing sponge 2 and a multilayer staggered kevlar fiber lining 3, wherein the composite energy-absorbing sponge 2 is fixedly arranged on the multilayer staggered kevlar fiber lining 3, and the anti-penetration scale structure 1 of the clam-like shell is fixedly arranged on the composite energy-absorbing sponge 2;
the penetration-resistant scale structure 1 comprises the following components in percentage by mass:
55-75% of epoxy resin, 5-20% of dimethylbenzene, 5-20% of boron trifluoride, 0.5-1.5% of nano silicon carbide whisker, 0.5-1.5% of nano TiO2 particle, 0.5-1.5% of nano TiB particle, 2.5-6% of short carbon fiber and 0.5-1.5% of nano Al2O3 particle;
the preparation method of the penetration-resistant scale structure comprises the following steps:
mixing nano silicon carbide whiskers, nano TiO2 particles, nano TiB particles, short carbon fibers and epoxy resin, adding dimethylbenzene and boron trifluoride into the mixture, and performing structural curing by adopting a special forming die at the temperature of T1, wherein the temperature of T1 is more than or equal to 80 ℃ and less than or equal to 240 ℃, the curing time is T1, and the time of T1 is more than or equal to 2h and less than or equal to 48 h;
the outer contour of the penetration-resistant scale structure 1 is formed by rotating 4 curves meeting the following equation around an X axis, the rotation angle is theta 1, and theta 1 is more than or equal to 30 degrees and less than or equal to 45 degrees:
x2+(y-n1)2＝R2x≥0，y≥R (1)
y＝-k1x2+2n1x≤0 (2)
(x-R·cosθ2)2+(y-R·sinθ2)2＝R2x≤0 (3)
x2+(y-k2n1)2＝R2x≥0 (4)
wherein R is the size parameter of the bionic scale, R is more than or equal to 4mm and less than or equal to 12mm, n1、k1、k2And theta2Respectively is the structural parameter of the scale, n is more than or equal to 3mm1≤15mm，0.03≤k1≤0.45，1.4≤k2≤2.2，25°≤θ2≤45°；
The anti-penetration flake structure 1 is provided with a plurality of anti-penetration flakes 11, a diamond arrangement mode is adopted, the included angle between the center of the front row of flakes and the center of the two adjacent rear rows of flakes is theta 3, wherein theta 3 is more than or equal to 45 degrees and less than or equal to 75 degrees;
the composite energy-absorbing sponge body 2 consists of a high-resilience sponge 21 and non-Newtonian energy-absorbing fluid 22 filled in the high-resilience sponge 21, wherein the volume ratio of the high-resilience sponge to the non-Newtonian energy-absorbing fluid is n, and n is more than or equal to 0.25 and less than or equal to 0.75;
the non-Newtonian energy absorption fluid comprises the following components in percentage by volume:
polyacrylamide: 0 to 14 percent; polyvinyl chloride: 0 to 12.5 percent; nylon 13: 0 to 17.5; diethylene glycol ethyl ether acetate: 35% -65.5%; diethylene glycol ethyl ether: 15% -25%;
the multilayer staggered Kevlar fiber bushing 3 is formed by bonding n2 layers of Kevlar fiber cloth into lining cloth through flexible potting adhesive, wherein n2 is more than or equal to 3 and is less than or equal to 6, a corner theta exists between every two layers of Kevlar fiber cloth, the theta is more than or equal to 15 degrees and is less than or equal to 30 degrees, and the lining cloth is bonded into a sealed bushing by adopting the flexible potting adhesive.
The principle and the beneficial effects of the invention are as follows:
referring to fig. 1, 2 and 3, the penetration-resistant scale structure: the outer contour of the penetration-resistant scale 1 of the clam-like shell has larger curvature than the contour of a helmet, so that the impact angle of a projectile and a shrapnel on the helmet can be effectively reduced, the penetration-resistant capacity of the helmet can be effectively improved by the penetration-resistant scale 1 stacking arrangement mode of the clam-like shell and the particle-reinforced high-strength resin material, the penetration-resistant capacity of the helmet can be effectively improved by adopting the resin-based material with higher specific strength, the structural weight is reduced, and the load of fighters is reduced;
composite energy-absorbing sponge 2: the non-Newtonian energy fluid 22 is divided into small units by the high-resilience sponge 21, and when the bullet is impacted, the impact energy can be absorbed to the maximum extent by the solidification effect of the non-Newtonian fluid in the small units, so that the buffer protection effect on organs such as cervical vertebra, brain and the like of a person is realized;
multilayer staggered Kevlar fiber bushing 3: the multilayer staggered Kevlar fiber lining 3 is formed by sticking multiple layers of Kevlar fiber cloth layer by layer according to a certain rotation angle, has good strength in all directions, and further improves the penetration resistance of the lining.
Claims (1)
1. A bionic energy-absorbing buffering bulletproof helmet lining is composed of an anti-penetration scale structure (1), a composite energy-absorbing sponge body (2) and a multilayer staggered Kevlar fiber lining (3), wherein the composite energy-absorbing sponge body (2) is fixedly arranged on the multilayer staggered Kevlar fiber lining (3), and the anti-penetration scale structure (1) of a clam-like shell is fixedly arranged on the composite energy-absorbing sponge body (2); the method is characterized in that: the anti-penetration scale structure (1) is characterized in that the outer contour of the anti-penetration scale structure is formed by rotating 4 curves satisfying the following equation around an X axis, and the rotating angle is theta1Wherein theta is less than or equal to 30 degrees1≤45°：
x2+(y-n1)2＝R2x≥0，y≥R (1)
y＝-k1x2+2n1x≤0(2)
(x-R·cosθ2)2+(y-R·sinθ2)2＝R2x≤0 (3)
x2+(y-k2n1)2＝R2x≥0 (4)
Wherein R is the size parameter of the bionic scale, R is more than or equal to 4mm and less than or equal to 12mm, n1、k1、k2And theta2Respectively is the structural parameter of the scale, n is more than or equal to 3mm1≤15mm，0.03≤k1≤0.45，1.4≤k2≤2.2，25°≤θ2≤45°。
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| CN106245076B (en) * | 2016-08-25 | 2018-03-02 | 山东清大银光金属海绵新材料有限责任公司 | The preparation of double whisker reinforcement sponge structure type nickel cobalt molybdenum evanohm high temperature energy-absorbing materials |
| CN111806036B (en) * | 2020-07-11 | 2021-03-05 | 吉林大学 | Bionic fiber reinforced composite material with high impact resistance and preparation method thereof |
| CN112013717B (en) * | 2020-08-25 | 2022-05-27 | 清华大学苏州汽车研究院（相城） | For military use bionical protection helmet |
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| CN112066803A (en) * | 2020-09-16 | 2020-12-11 | 吉林大学 | Shield-shaped tail section type bionic turning bulletproof plugboard |
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| CN114396446B (en) * | 2021-12-27 | 2023-03-17 | 吉林大学 | Bionic energy-absorbing plate core structure for sandwich panel and preparation method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321247Y (en) * | 1998-04-29 | 1999-06-02 | 廖元利 | Garment for protection against punch |
| CN1907165A (en) * | 2005-08-05 | 2007-02-07 | 马斌 | Ceramic base lightweight bulletproof helmet and the production method |
| CN201663949U (en) * | 2010-01-28 | 2010-12-08 | 慧来(厦门)运动器材有限公司 | Lining structure of helmet |
| CN102486008A (en) * | 2010-12-01 | 2012-06-06 | 北京雷特新技术实业公司 | Surface treatment emulsion capable of improving adhesion of aramid woven fabric and metal flake |
| CN103254572A (en) * | 2013-05-20 | 2013-08-21 | 嘉兴学院 | Graphene oxide/carbon nano-tube collaboration-modified glass fiber reinforced epoxy composite material and preparation method thereof |
| US8844066B1 (en) * | 2013-11-13 | 2014-09-30 | John E. Whitcomb | Integrated helmet having blunt force trauma protection |
| CN204574947U (en) * | 2015-04-17 | 2015-08-19 | 山东天意高科技有限公司 | Bionic flexible protective gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070234458A1 (en) * | 2005-09-15 | 2007-10-11 | Federal Covers & Textiles, Inc. | Composite segmented flexible armor |
-
2016
- 2016-05-10 CN CN201610330990.4A patent/CN105841551B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321247Y (en) * | 1998-04-29 | 1999-06-02 | 廖元利 | Garment for protection against punch |
| CN1907165A (en) * | 2005-08-05 | 2007-02-07 | 马斌 | Ceramic base lightweight bulletproof helmet and the production method |
| CN201663949U (en) * | 2010-01-28 | 2010-12-08 | 慧来(厦门)运动器材有限公司 | Lining structure of helmet |
| CN102486008A (en) * | 2010-12-01 | 2012-06-06 | 北京雷特新技术实业公司 | Surface treatment emulsion capable of improving adhesion of aramid woven fabric and metal flake |
| CN103254572A (en) * | 2013-05-20 | 2013-08-21 | 嘉兴学院 | Graphene oxide/carbon nano-tube collaboration-modified glass fiber reinforced epoxy composite material and preparation method thereof |
| US8844066B1 (en) * | 2013-11-13 | 2014-09-30 | John E. Whitcomb | Integrated helmet having blunt force trauma protection |
| CN204574947U (en) * | 2015-04-17 | 2015-08-19 | 山东天意高科技有限公司 | Bionic flexible protective gear |
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