CN101684993A - Bulletproof jacket - Google Patents
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- CN101684993A CN101684993A CN200810161478A CN200810161478A CN101684993A CN 101684993 A CN101684993 A CN 101684993A CN 200810161478 A CN200810161478 A CN 200810161478A CN 200810161478 A CN200810161478 A CN 200810161478A CN 101684993 A CN101684993 A CN 101684993A
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Abstract
The invention discloses a bulletproof jacket comprising a substrate as the external layer, a barrier layer connected with the substrate, and an absorption layer connected with the barrier layer, wherein the barrier layer comprises a plurality of hard disks superposed into a scalelike structure; the absorption layer comprises at least two weftless fabric pressure layers and knitted fabrics betweenevery two weftless fabric pressure layers; and the weftless fabric pressure layers and the knitted fabrics comprise fibers of which the strength is at least 15 cN/dtex and the modulus is at least 390cN/dtex. In the bulletproof jacket provided by the invention, the scalelike structure formed by the hard disks can effectively stop bullets, prevent the user from non-perfoliate wounds and enable thebulletproof jacket to have favorable flexibility; and the absorption layer comprises a plurality of weftless fabric pressure layers and knitted fabrics and has favorable modulus of elasticity, and the transfer and absorption capability of the bulletproof jacket to the energy of the bullets can be obviously enhanced, thereby enhancing the bulletproof capability of the bulletproof jacket.
Description
Technical field
The present invention relates to individual protective equipment, be specifically related to a kind of flak jackets.
Background technology
Flak jackets is a kind of individual protection equipment of dressing for guarantor's existence under specific environment, and it can absorb and the kinetic energy of dissipation bullet, shell fragment, and prevention penetrates, and effectively protects the position of being protected of human body.
Though the protection level of the hardware flak jackets that the conventional steel material is made can satisfy ballistic requirements, weight is too big because steel material has, rigidity reaches shortcomings such as comfortableness difference too by force, makes the mobility of wearer be restricted.Along with the continuous progress of material science, the appearance of high-tech synthetic fibers such as aramid fiber (Kevlar) and ultra-high molecular weight polyethylene (UHMWPE) fiber is that the development of bullet resistant material has brought revolutionary variation.These class synthetic fibers are compared with ferrous materials all has higher specific strength and specific modulus, so energy absorption capability is better than ferrous materials, and good springiness, when being used for the software flak jackets, and lighter weight, comfortableness is strong, and the mobility of wearer can not be restricted.When synthetic fibers are used for the individual protection equipment, make various ballistic fabrics according to different situations, and then with ballistic fabric and the compound composite of making of appropriate resin, the shellproof mechanism of ballistic fabric is to clear up the kinetic energy of bullet by the deformation and failure of the yarn that is made of fiber in the fabric, and ballistic fabric mainly is divided into knitted fabric, woven fabric, no latitude cloth and needling non-woven felt etc.Have good performance though synthetic fibers are used to make flak jackets,, therefore make wearer be subjected to non-penetrability wound easily because synthetic fibers elasticity height, deformation rate are big.
In order effectively bullet to be stopped and prevents that wearer is subjected to the non-penetrability wound of bullet that people improve the conventional steel material.Chinese patent CN1332839A discloses a kind of method and equipment of resisting high-speed firing bullet, the equipment that this patent provides comprises the imbricated texture that is formed by a plurality of hard disc stacks with certain radius and thickness, each disk is milled in a plurality of positions, the radius of curvature of each position of milling is the radius of disk no better than, the position of milling is a plurality of disk position overlapped, and these overlapping disks are secured on the substrate of being made by the high-performance synthetic fibers.Though the imbricated texture of this stack has good flexibility, can not limit the mobility of wearer, the impulsive force of disperseing bullet effectively.But because the material of disk mostly is hard materials such as high duty metal, ceramic clad plate, the characteristics of this hard material maximum are therefore can stop bullet effectively owing to have high strength, but its energy transmits and absorbability is relatively poor, because the kinetic energy of bullet can not effectively outwards transmit, therefore can reduce the ballistic performance of this flak jackets greatly.
Therefore, need a kind ofly promptly can to prevent non-penetrability wound, can improve the flak jackets of transmission of bullet energy and absorbability again.
Summary of the invention
The technical problem that the present invention solves is, provides a kind of and promptly can prevent non-penetrability wound, can improve the flak jackets of transmission of bullet energy and absorbability again.
For solving above technical problem, the invention provides a kind of flak jackets, comprise outer field substrate, the barrier layer that is connected with substrate, the absorbed layer that is connected with the barrier layer, described barrier layer comprises that a plurality of stacks form the hard disc of imbricated texture, described absorbed layer comprises that at least two no latitude cloth press layer and do not have looped fabric between the latitude cloth, and described no latitude cloth presses layer and looped fabric to comprise that intensity is at least the fiber that 15cN/dtex, modulus are at least 390cN/dtex.
The material of hard disc of the present invention is meant Brinell hardness greater than the material more than 450, and preferred, the Brinell hardness of hard disc is greater than 600, and hard disc can be metal material or nonmetallic materials.Metal material can be high-carbon steel, stainless steel, steel alloy and various titanium alloy.Nonmetallic materials can be ceramic composite, ceramic composite can be oxidisability ceramic composite, non-oxidizable ceramic composite, or for example can be for being the ceramic composite of matrix with aluminium oxide, barium titanate, strontium titanates, barium zirconate, magnesium zirconate, carborundum boron carbide etc.In order to make described flak jackets have better flexibility, the radius of hard disc can be between 10mm～50mm, preferably, the radius of hard disc can be between 15mm～40mm, radius is big more, can reduce the flexibility of flak jackets, and the thickness of hard disc can be between 1mm～5mm.In order effectively to stop bullet, the present invention forms imbricated texture with a plurality of integrated disc portions stacks, and described imbricated texture is meant the structure that a disclosed disk is covered by other integrated disc portions in Chinese patent CN1332839A.
For the disk of imbricated texture arrangement being fixed, being the invention provides the barrier layer is sticked on the substrate, described substrate comprises no latitude cloth pressure layer.No latitude cloth of the present invention (UD cloth) claims warp-wise cloth or unidirectional cloth again, is meant fiber is lined up after the continuous band by even, parallel, straight and upright, selects suitable adhesive that it is carried out the continuous preimpregnation band that impregnation, drying obtain single orientation fibers.No latitude cloth can adopt the method for describing in the United States Patent (USP) 4457985,4748064,4916000,4403012,4623573,4737402,4916000 to prepare.No latitude cloth herein presses layer to be meant many, and for example 2 or 4 no latitude cloth stack the hot-forming pressure layer that obtains, and when making no latitude cloth and pressing layer, multilayer need not had latitude cloth lamination, pressurizes then and finalizes the design.Make no latitude cloth and press the temperature of layer to be 80 ℃～100 ℃, pressure can be 1MPa～5MPa.No latitude cloth is pressed in the layer, and the fiber angulation in the adjacent no latitude cloth can be between 0 degree～90 degree, and the fiber alignment angle is for the final performance important influence of no latitude cloth, and for example the fiber in adjacent no latitude cloth becomes (0/90 °)
nDuring arrangement, because the orientation that fiber only is consistent on both direction, therefore not having latitude cloth has good intensity, but extensibility is relatively poor; Fiber becomes (0/+45 °/-45 °/90 °) in adjacent no latitude cloth
nDuring arrangement, composite shows good isotropism effect, has good percentage elongation, but intensity can descend.Therefore, have higher intensity in order to make substrate, in substrate, the fiber angulation in the adjacent no latitude cloth can be 85 degree～95 degree.
Because hard disc has higher hardness and intensity, when being subjected to projectile impact, can effectively bullet be damaged, prevent that wearer from sustaining damage, but because the transmission and the absorbability of hard disc antithetical phrase springing energy are relatively poor, therefore anti-penetration article provided by the invention also comprise the absorbed layer that is connected with the barrier layer, and described absorbed layer comprises that many no latitude cloth press layer and do not have looped fabric between the latitude cloth pressure layer.The present invention can directly be encapsulated in the flak jackets for the connected mode that connects absorbed layer and barrier layer and without particular limitation, also can adopt binding agent to paste, and can also adopt screw to fix.Bullet is at first stopped by the barrier layer damages it, and the bullet after the damage penetrates absorbed layer after passing the barrier layer again, by absorbed layer the bullet of breakage is caught, and the bullet energy all exhausts like this.Because the fiber in the no latitude cloth is the structure of single orientations, therefore there is not the original mechanical property that latitude cloth has well been inherited fiber, possess very high intensity; Compare with no latitude cloth, the fiber in the looped fabric possesses good elastic deformability through winding, bending, and it is strong that energy absorption capability does not have latitude cloth, but intensity is a bit weaker.For the barrier layer being played the effect of a support, improve the energy absorption capability of absorbed layer simultaneously, when many no latitude cloth being pressed layer and the compound hot pressing of looped fabric form absorbed layer, because no latitude cloth and looped fabric to the alternately influence of bullet, can significantly improve the energy absorption and the transmission capacity of absorbed layer.Preferably, in absorbed layer, will not have latitude cloth and press layer and looped fabric alternately to place.The weight ratio of no latitude cloth and looped fabric can be 1: 1～10: 1, and preferred, the weight ratio of no latitude cloth and looped fabric can be 1: 1～5: 1.
Because the fiber alignment direction in the no latitude cloth pressure layer all has considerable influence for the intensity and the spring rate of no latitude cloth, the inventor finds, press in the layer at no latitude cloth, when fiber in the adjacent no latitude cloth becomes 40 degree～50 degree angle modes to arrange, can further improve the energy absorption capability of absorbed layer, this is because because no latitude cloth is tending towards isotropic effect, and therefore energy can improve the energy absorption capability of absorbed layer along fiber to transmitting simultaneously all around; Preferably, press in the layer at no latitude cloth, the fiber in the adjacent no latitude cloth becomes miter angle to arrange.
Looped fabric as herein described is meant that with knitted fabric and the compound pressure layer that obtains of adhesive hot pressing the temperature of making looped fabric can be 80 ℃～100 ℃, and pressure can be 1MPa～5MPa.Knitted fabric as herein described is meant that knitting motion clocklike forms coil, between coil and the coil mutually the string cover get up and the fabric that forms, can for the warp thread of routine is knitting grade for single shaft to knitted fabric, also can be the knitted fabric of multiaxis to structure.Preferably, select the knitted fabric of multiaxis for use to structure.In the process of preparation knitted fabric, define a baseline and is 0 degree, its forms the longitudinal axis that fabric producer makes progress, and other fiber longitudinal axis therewith becomes the angle of non-zero, and preferably, other fiber is vertical with baseline.The preparation method of knitted fabric can adopt the method that provides among the Chinese patent CN1072795C to prepare.
Fiber in no latitude cloth provided by the invention and the looped fabric is meant that intensity is at least 15cN/dtex, modulus and is at least the fiber that 390cN/dtex, energy to failure are at least 28J/g.Preferably, fibre strength is at least that 20cN/dtex, modulus are at least 800cN/dtex, energy to failure is at least 35J/g.Preferred, fibre strength is at least that 28cN/dtex, modulus are at least 1200cN/dtex, energy to failure is at least 40J/g.Fiber in no latitude cloth and the knitted fabric can be inorfil or organic fiber, and inorfil can be glass fibre, ceramic fibre or carbon fiber; Organic fiber can be aramid fibre, terephthalamide fiber, liquid crystal polymer fibre, polybenzimidazoles ladder fibre (PBO), polyolefine fiber, vinal, polyacrylonitrile fibre (PAN).
Fiber in no latitude cloth and the looped fabric is preferably the linear polyethylene fiber, and the linear polyethylene fiber is meant the side chain that has in per 100 C atoms less than, in preferred per 300 carbon atoms less than 1 side chain.Preferred, the linear polyethylene fiber has super high molecular weight, and promptly the molecular weight of linear polyethylene fiber can be (1～7) * 10
6, preferred, the molecular weight of linear polyethylene fiber can be (1.5～4.5) * 10
6Superhigh molecular weight polyethylene fibers can prepare by for example gel spinning technology described in GB2042414A or the WO01/73173.Gel spinning technology is made up of following steps: preparation has the solution of the linear polyethylene of high intrinsic viscosity, this solution is spun into silk being higher than under the temperature of solution temperature, it is following producing gel that this silk is cooled to gelling temp, and remove desolvate before, during or later on drawn yarn to obtain superhigh molecular weight polyethylene fibers.
No latitude cloth press adhesive in layer and the looped fabric be instigate fiber be bonded together also can all or part of parcel fiber a kind of material, the adhesive that can select for use is a polymer matrix material.Preferably, adhesive is a thermoplastic, and the thermoplastic that can select for use is polyurethane, polyvinyl polymer, polyacrylic, polyolefin or thermoplastic elastomer block copolymer.Preferably, adhesive is selected from polystyrene triblock copolymer body (SIS, styrene-isoprene-phenylethene), rise KARTON D-1107, the KARTON D-1161 that company (KARTON) produces as section, or hydrogenated polystyrene triblock copolymer body (SEBS, styrene-ethylene-butylene-styrene), as KARTON G-1650, KARTON D-1651.
No latitude cloth presses the adding form of adhesive in layer and the looped fabric can be solvent-borne type, and used solvent can be selected from benzene, toluene, chloroform, carbon tetrachloride, hexane, cyclohexane, chlorination cyclohexane, diethyl ether, methyl-isobutyl ether, ethyl acetate, amyl acetate etc.In adhesive solvent, the weight ratio of adhesive and solvent is 10～40: 90～60, and preferred, the weight ratio of adhesive and solvent is 15～35: 85～65; Preferred, the weight ratio of adhesive and solvent is 20～30: 80～70.
Because the effect of adhesive mainly is that fiber is bonded together as bullet resistant material in no latitude cloth and the looped fabric, therefore should control gluing dosage suitable in no latitude cloth and the looped fabric.In no latitude cloth, the content of adhesive can be 5～30wt%, and is preferred, the content 8～20wt% of adhesive.In looped fabric, the content of adhesive is 10～30wt%, and is preferred, and the content of adhesive is 16～28wt%.
During the preparation absorbed layer, multilayer is not had latitude cloth press layer and the pressure that the looped fabric stack is warming up to 100 ℃～115 ℃ of after-applied 1MPa～3MPa to carry out pre-molding; Preferably, will not have and carry out pre-molding after latitude cloth presses layer and looped fabric to be warming up to 105 ℃～115 ℃.
Behind the pre-molding, again pre-molding spare is put into temperature and be pressure heat insulating pressurize 20min～60min that 120 ℃～130 ℃ hot pressing die applies 10MPa～20MPa, be cooled to the room temperature layer that is absorbed then; Preferably, in hot pressing die, pre-molding spare is applied 15MPa～20MPa and carry out the heat-insulation pressure keeping layer that is absorbed; Preferred, the temperature of hot pressing die is 125 ℃～130 ℃; Preferred, layer is absorbed behind heat-insulation pressure keeping 30min～60min in hot pressing die.
Press the adhesive in layer and the looped fabric to combine with fiber more uniformly in order to make the no latitude cloth in the absorbed layer, the present invention further provides behind pre-molding, to be placed on temperature be 120 ℃～130 ℃, pressure less than the vacuum condition of 0.5kpa insulation 20min～120min vacuum heat-preserving down with pre-molding spare, preferably, the temperature that vacuum heat-preserving is handled is 125 ℃～130 ℃, preferred, the pressure during application of vacuum is less than 0.2kpa.When pre-molding spare is at high temperature carried out application of vacuum, because adhesive has good flowability, therefore under high-temperature vacuum, help the interaction between reinforcing fibre and the adhesive, can reduce generation of defects such as hole, strengthen the bulletproof ability that no latitude cloth is pressed layer and looped fabric.When pre-molding spare is carried out application of vacuum, can be placed in the vacuum drying oven or vacuum drying oven in.After the processing of pre-molding spare vacuum heat-preserving, carry out follow-up hot-briquetting modeling process again.
Because the barrier layer significant feature is to prevent that when stopping bullet wearer is subjected to non-penetrability wound, when one of them disk is subjected to the bump of bullet, the energy of bullet can be that outwards transmit at the center with this disk, in order to help the pliability that other disk disperses the impact of bullet and further increases the anti-penetration article.The present invention further provides described each disk is milled in a plurality of positions.The radius of curvature of each position of milling all is substantially equal to the radius of curvature of disk, when these disks are superposeed according to imbricated texture one row with meeting a row, should make one row in each disk all with this row in other disk all be located substantially on the straight line, and this integrated disc portions overlaps the position of milling of arranging an interior disk that its place drains into, and the position of milling of himself is overlapping by disk part among the row under the row of its place.After disk lined up imbricated texture and form the barrier layer, the barrier layer is pasted on the substrate, and then absorbed layer is covered on the barrier layer, the barrier layer is encapsulated between substrate and the absorbed layer.During as the anti-penetration article, substrate is as skin, and described skin is the layer that contacts with bullet at first; Absorbed layer is as internal layer, and described internal layer is meant from the nearest layer of wearer's body.
The invention provides a kind of flak jackets, comprise substrate, the barrier layer that is connected with substrate, the absorbed layer that is connected with the barrier layer.Because the barrier layer comprises a plurality of hard discs that are superimposed as imbricated texture, therefore not only can stop bullet effectively, prevent that wearer is subjected to non-penetrability wound, and have the well flexible mobility that can not limit wearer.Because absorbed layer has comprised many no latitude cloth and has pressed layer and looped fabric, have good spring rate, therefore can significantly improve the energy transmission and the absorbability of anti-penetration article, and do not have latitude cloth and press layer to have very high intensity, when being subjected to projectile impact, better supporting role is played on the barrier layer.Therefore press under the alternating action of layer and looped fabric at no latitude cloth, can effectively improve the bulletproof ability of flak jackets.
Description of drawings
Fig. 1 is the disk schematic diagram in the barrier layer in the flak jackets of the present invention;
Fig. 2 is the imbricated texture schematic diagram that the stack of disk in the barrier layer forms in the flak jackets of the present invention;
Fig. 3 is the absorbent layer structure schematic diagram in the flak jackets of the present invention;
Fig. 4 is a barrier layer structure schematic diagram in the flak jackets of the present invention;
Fig. 5 is a flak jackets structural representation of the present invention.
The specific embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
Embodiment
For better relatively invention effect, in following embodiment, all provide the disk of identical material, no latitude cloth and looped fabric element as flak jackets.
Referring to Fig. 1, schematic diagram for used disk in the present embodiment, disk 11 is that therefrom state's Baosteel company model of producing is that the thickness of BFD900 is that the armour plate cutting of 2.8mm obtains, in order to improve the smoothness of disk border, adopt the mode cuts sheet material of laser cutting to obtain a plurality of disks 11 that radius is 15mm, for cutting method, the present invention is also without particular limitation, also can adopt modes such as laser cutting, plasma cutting.After the cutting, each piece disk 11 to be milled, disk 11 will mill three positions-left side position 11a, centre position 11b and the right position 11c that mills that mills that mills, this milling can be carried out according to any order.The degree of depth of milling is that half of disc thickness, the radius of milling equate with disc radius.All there is the distance of milling each position of milling, and the described distance of milling is the vertical range between the arc top of the edge of disk 11 and mill position 11a, 11b, 11c, and the distance of milling can be 40%～60% of disc radius.In embodiment provided by the invention, about mill position 11a, 11c mill the distance for disc radius 54%, the centre mill the position milling the distance for disc radius 50%.When arranging with imbricated texture, three disks 11 form a circular arc 12, as shown in Figure 2, put into another disk in this circular arc.The barrier layer of adopting this imbricated texture to form because combining closely between the disk when a disk is subjected to the impact of bullet, can also have been improved the flexible of barrier layer simultaneously effectively with the energy dispersion of bullet, has increased the pliability of flak jackets.
When preparing no latitude cloth, the fiber number of getting the production of Dutch DSM N. V. is the superhigh molecular weight polyethylene fibers of the Dyneema SK75 type (intensity is that 35cN/dtex, modulus are 1100cN/dtex) at 400 dawn, is 25% to be dissolved in solvent naphtha (2 No. 120 with KRATON G-1650 according to weight ratio, the 3-diacetyl), be 38g/m according to the compound surface density of making of the method among the patent US4916000 with above-mentioned fiber and adhesive as adhesive
2No latitude cloth, the weight ratio of fiber and adhesive is 90: 10 in the no latitude cloth.
During the preparation looped fabric, the fiber number of getting the production of Dutch DSM N. V. is the Dyneema SK75 type superhigh molecular weight polyethylene fibers at 600 dawn, has mile multiaxis of (liba) system on the warp thread knitting machine of weft yarn insertion system, use+45,-45 and three kinds of yarn systems of an angle of 90 degrees, described polyethylene fibre is processed into multiaxis that surface density is to knitted fabric, again multiaxis is flooded with above-mentioned adhesive to knitted fabric, it is 115 ℃ in temperature then, pressure is that typing obtains looped fabric under the condition of 2MPa, the weight ratio of knitted fabric and adhesive is 84: 16, and obtaining multiaxis is 59g/m to the weight per unit area of looped fabric
2
In order to estimate the bulletproof ability of flak jackets, the NIJ0101.04 flak jackets testing standard that the present invention adopts the judicial association of the U.S. to formulate is carried out performance test to flak jackets provided by the invention.Because shellproof mechanism of the present invention is at first by the barrier layer bullet to be damaged, bullet after the damage penetrates absorbed layer after passing the barrier layer again, by absorbed layer the bullet of breakage is caught, the bullet energy all exhausts like this, when therefore estimating the bulletproof ability of flak jackets, bullet is passed the maximal rate V that the barrier layer penetrates the absorbed layer of 50% thickness again
50Performance test standard as flak jackets in the embodiment of the invention.
Embodiment 1
Referring to Fig. 3, when preparing absorbed layer, get 4 no latitude cloth stacks, the fiber in the adjacent no latitude cloth becomes 45 degree to arrange, and the pressure that the no latitude cloth after the stack is applied 1.5MPa under 95 ℃ obtains not having a latitude cloth pressure layer 21a.Get 4 no latitude cloth and press layer 21a and 3 looped fabric 21b stacks (the no latitude cloth of the partial stack that only drawn among the figure is pressed layer and looped fabric), during stack, per two no latitude cloth are put a looped fabric in the middle of pressing layer.No latitude cloth after the stack and looped fabric are warming up to 115 ℃ of pressure that apply 2.5MPa and carry out pre-molding spares.It is to be incubated 20min in 128 ℃ the vacuum drying oven that pre-molding spare is placed on temperature, and the vacuum in the vacuum drying oven is 0.18kpa.Be cooled to room temperature after vacuum heat-preserving is handled and pre-molding spare is taken out to be placed on be warming up to 127 ℃ of pressure heat insulating 30min that apply 16MPa in the hot pressing die, be cooled to the room temperature layer 21 that is absorbed.
Preparation is got two no latitude cloth stacks during substrate, and the fiber in two no latitude cloth becomes 90 degree arrangements, and the pressure that the no latitude cloth that superposes is applied 1.5MPa under 95 ℃ obtains substrate 22.
Adopting the used adhesive of the no latitude cloth of preparation in the present embodiment to line up imbricated texture shown in Figure 2 as the disk 11 of adhesive after with a plurality of milling pastes on the substrate 22, as shown in Figure 4, again adhesive is dried, disk then is fixed on the substrate, because substrate 22 has flexible, and disk can be around its junction bending, and therefore, the combination of substrate and disk has pliability.Some adhesive of coating on the absorbed layer are fixed again and are connected the another side on barrier layer, oven dry obtains flak jackets, and as shown in Figure 5, this moment, the barrier layer was encapsulated between substrate 22 and the absorbed layer 21.
Carry out ballistic performance when test, 22 of substrates at first are subjected to the impact of bullet as shellproof outside.When adopting the test of NIJ0101.04 grade III Standard, promptly when flak jackets is subjected to 7.62mm NATO M80FMJ bullet (9.7) impact, bullet will pass the maximal rate V that passes the absorbed layer of 50% thickness behind the barrier layer again
50Be 886m/s.
Embodiment 2
When preparing absorbed layer, get 4 no latitude cloth stacks, the fiber in the adjacent no latitude cloth becomes 90 degree to arrange, and the pressure that the no latitude cloth after the stack is applied 1.5MPa under 95 ℃ obtains not having latitude cloth pressure layer.Get 4 no latitude cloth and press layer and 3 looped fabric stacks, during stack, per two no latitude cloth are put a looped fabric in the middle of pressing layer.No latitude cloth after the stack and looped fabric are warming up to 115 ℃ of pressure that apply 2.5MPa and carry out pre-molding spares.It is to be incubated 20min in 128 ℃ the vacuum drying oven that pre-molding spare is placed on temperature, and the vacuum in the vacuum drying oven is 0.18kpa.Be cooled to room temperature after vacuum heat-preserving is handled and pre-molding spare is taken out to be placed on be warming up to 127 ℃ of pressure heat insulating 30min that apply 16MPa in the hot pressing die, be cooled to the room temperature layer that is absorbed.
Preparation is got two no latitude cloth stacks during substrate, and the fiber in two no latitude cloth becomes 90 degree arrangements, and the pressure that the no latitude cloth that superposes is applied 1.5MPa under 95 ℃ obtains substrate.
Imbricated texture shown in the used adhesive of the no latitude cloth of preparation lined up as the disk of adhesive after with a plurality of milling pastes on the substrate, adhesive is dried again, and disk then is fixed on the substrate.Adopt and with embodiment 1 identical mode the another side that absorbed layer is fixedly connected on the barrier layer is obtained shellproof, this moment, the barrier layer was encapsulated between substrate and the absorbed layer.
Carry out ballistic performance when test, substrate surface at first is subjected to the impact of bullet as shellproof outside.When adopting the test of NIJ0101.04 grade III Standard, promptly when flak jackets is subjected to 7.62mm NATO M80FMJ bullet (9.7) impact, bullet will pass the maximal rate V that passes the absorbed layer of 50% thickness behind the barrier layer again
50Be 864m/s.
Comparative example 1
Get 18 no latitude cloth stacks, the fiber in the adjacent no latitude cloth becomes 90 degree to arrange, and the pressure that the no latitude cloth after the stack is applied 1.5MPa under 95 ℃ obtains not having latitude cloth pressure layer.
Preparation is got two no latitude cloth stacks during substrate, and the fiber in two no latitude cloth becomes 90 degree arrangements, and the pressure that the no latitude cloth that superposes is applied 1.5MPa under 95 ℃ obtains substrate.
Adopt the used adhesive of the no latitude cloth of preparation in the present embodiment to line up imbricated texture as the disk of adhesive after with a plurality of milling and paste on the substrate, adhesive is dried again, disk then is fixed on the substrate.Utilize glue bond will not have latitude cloth as binding agent and press layer to be fixed on the another side on barrier layer, oven dry obtains shellproof, and the barrier layer is encapsulated in substrate and does not have latitude cloth and press between the layer at this moment.
Carry out ballistic performance when test, substrate surface at first is subjected to the impact of bullet as shellproof outside.When adopting the test of NIJ0101.04 grade III Standard, promptly when flak jackets is subjected to 7.62mm NATO M80FMJ bullet (9.7) impact, bullet will pass the maximal rate V that passes the absorbed layer of 50% thickness behind the barrier layer again
50Be 845m/s.
Comparative example 2
Get 12 looped fabric stacks, the pressure that the looped fabric after the stack is applied 5MPa under 120 ℃ obtains looped fabric pressure layer.
Preparation is got two no latitude cloth stacks during substrate, and the fiber in two no latitude cloth becomes 90 degree arrangements, and the pressure that the no latitude cloth that superposes is applied 1.5MPa under 95 ℃ obtains substrate.
Adopt the used adhesive of the no latitude cloth of preparation in the present embodiment to line up imbricated texture as the disk of adhesive after with a plurality of milling and paste on the substrate, adhesive is dried again, disk then is fixed on the substrate.Utilize adhesive to press layer to be fixed on the another side on barrier layer looped fabric, oven dry obtains flak jackets, and this moment, the barrier layer was encapsulated between substrate and the looped fabric pressure layer.
Carry out ballistic performance when test, substrate surface at first is subjected to the impact of bullet as shellproof outside.When adopting the test of NIJ0101.04 grade III Standard, promptly when flak jackets is subjected to 7.62mm NATO M80FMJ bullet (9.7) impact, bullet will pass the maximal rate V that passes the absorbed layer of 50% thickness behind the barrier layer again
50Be 836m/s.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1, a kind of flak jackets, comprise outer field substrate, the barrier layer that is connected with substrate, the absorbed layer that is connected with the barrier layer, described barrier layer comprises that a plurality of stacks form the hard disc of imbricated texture, described absorbed layer comprises that at least two no latitude cloth press layer and do not have latitude cloth and press looped fabric between the layer, described no latitude cloth to press layer and looped fabric to comprise that intensity is at least the fiber that 15cN/dtex, modulus are at least 390cN/dtex.
2, flak jackets according to claim 1 is characterized in that the fiber angulation in the adjacent no latitude cloth is 40 degree～50 degree in the no latitude cloth pressure layer in the described absorbed layer
3, flak jackets according to claim 2 is characterized in that described substrate comprises no latitude cloth pressure layer, and the fiber angulation in the no latitude cloth pressure layer in the described substrate in the adjacent no latitude cloth is that 85 degree～95 are spent.
4, flak jackets according to claim 1 is characterized in that in the described absorbed layer that it is 1: 1～5: 1 that no latitude cloth is pressed the weight ratio of layer and looped fabric.
5,, it is characterized in that it is superhigh molecular weight polyethylene fibers that described no latitude cloth is pressed the fiber in layer and the looped fabric according to each described flak jackets of claim 1 to 4.
6, according to each described flak jackets of claim 1 to 4, it is characterized in that described disk is milled in a plurality of positions, the radius of curvature of each position of milling equals the radius of curvature of disk, first disk of described a plurality of disks is overlapped to form imbricated texture by other three integrated disc portions wherein, and the complete part of thickness that the position of milling of each disk is applied disk fully covers.
7, flak jackets according to claim 6, the thickness that it is characterized in that described disk is 1mm～5mm.
8, flak jackets according to claim 6, the radius that it is characterized in that described disk is 10mm～50mm.
9, flak jackets according to claim 6, the Brinell hardness that it is characterized in that described disk is greater than 450.
10, flak jackets according to claim 6 is characterized in that the distance of milling when disk is milled accounts for 40%～60% of disc radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810161478A CN101684993A (en) | 2008-09-27 | 2008-09-27 | Bulletproof jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810161478A CN101684993A (en) | 2008-09-27 | 2008-09-27 | Bulletproof jacket |
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| CN101684993A true CN101684993A (en) | 2010-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810161478A Pending CN101684993A (en) | 2008-09-27 | 2008-09-27 | Bulletproof jacket |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155869A (en) * | 2011-01-25 | 2011-08-17 | 张克勤 | High performance bullet-proof vest |
| CN102783728A (en) * | 2011-05-18 | 2012-11-21 | 上海斯瑞聚合体科技有限公司 | Bullet, bayonet and cutting knife prevention clothes |
| CN104776755A (en) * | 2015-04-17 | 2015-07-15 | 山东天意高科技有限公司 | Bionic flexible protective gear |
| CN108362172A (en) * | 2018-03-06 | 2018-08-03 | 中祎防护科技有限公司 | A kind of comfort type flak jackets |
-
2008
- 2008-09-27 CN CN200810161478A patent/CN101684993A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155869A (en) * | 2011-01-25 | 2011-08-17 | 张克勤 | High performance bullet-proof vest |
| CN102783728A (en) * | 2011-05-18 | 2012-11-21 | 上海斯瑞聚合体科技有限公司 | Bullet, bayonet and cutting knife prevention clothes |
| CN104776755A (en) * | 2015-04-17 | 2015-07-15 | 山东天意高科技有限公司 | Bionic flexible protective gear |
| CN108362172A (en) * | 2018-03-06 | 2018-08-03 | 中祎防护科技有限公司 | A kind of comfort type flak jackets |
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Application publication date: 20100331 |