Bulletproof formed part and preparation method thereof

A molding, angled technology, used in protective equipment, offensive equipment, personnel protection equipment, etc., can solve the problems of low elongation of composite materials, unfavorable energy absorption and diffusion, and poor performance of buffering bullet kinetic energy.

Inactive Publication Date: 2010-03-31
宁波荣溢化纤科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As bulletproof parts, when the fiber becomes (0 / 90°) n At this time, although the bulletproof parts can inherit the strength performance of the fiber to the greatest extent, due to the low elongation of the composite material in this fiber arrangement, the performance of buffering the kinetic energy of the bullet is poor. Due to the effect of anisotropy, the bullet’s The stress wave only transmits in two directions, which is not conducive to the absorption and diffusion of energy, thus reducing the bulletproof performance of the body armor

Method used

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  • Bulletproof formed part and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get the ultra-high molecular weight polyethylene fiber of the Dyneema SK75 type (intensity is 35cN / dtex, modulus is 1100cN / dtex) that the fineness that Holland DSM company produces is 400 deniers, and KRATONG-1650 is dissolved in No. 120 according to the weight ratio of 22%. Solvent naphtha (2,3-butanedione) is used as adhesive, and above-mentioned fiber and adhesive are compounded according to the method in the patent US4916000 and make surface density be 38g / m 2 unidirectional non-weft fabric. The weight ratio of fiber to adhesive in the laid fabric was 88:12.

[0027] Take 4 layers of non-weft cloth and arrange them according to the fibers as [0° / 90°] 2 In order to protect the product from being damaged by friction with the outside world, the two sides of the four-layer cloth are compounded with LDPE protective film. The pre-press molding temperature is 100°C and the molding pressure is 2.5MPa. , constant temperature and pressure for 15 minutes to obtain a barrier ...

Embodiment 2

[0032] Get the Dyneema SK75 type (intensity is 35cN / dtex, modulus is 1100cN / dtex) ultra-high molecular weight polyethylene fiber that the fineness that Holland DSM company produces is 400 deniers, KRATON D-1107 is dissolved in No. 120 according to the weight ratio of 24%. Solvent naphtha is made tackiness agent, and above-mentioned fiber and tackiness agent are compounded according to the method identical with embodiment 1 and make area density be 40g / m 2 unidirectional non-weft fabric. The weight ratio of fiber to adhesive in the laid fabric was 86:14.

[0033] Take 4 layers of non-weft cloth and arrange them according to the fibers as [0° / 90°] 2 In order to protect the product from being damaged by friction with the outside world, the two sides of the four-layer cloth are compounded with LDPE protective film. The pre-press molding temperature is 100°C and the molding pressure is 2.5MPa. , constant temperature and pressure for 15 minutes to obtain a barrier layer.

[0034]...

Embodiment 3

[0038] Get the Dyneema SK75 type (intensity is 35cN / dtex, modulus is 1100cN / dtex) ultra-high molecular weight polyethylene fiber that the fineness that Holland DSM company produces is 800 deniers, KRATON G-1650 is dissolved in No. 120 solvent according to weight ratio 22% Oil is used as tackiness agent, and above-mentioned fiber and tackiness agent are compounded according to the method identical with embodiment 1 and make area density be 79g / m 2 unidirectional non-weft fabric. The weight ratio of fiber to adhesive in the laid fabric was 88:12.

[0039] Take 4 layers of non-weft cloth and arrange them according to the fibers as [0° / 90°] 2 In order to protect the product from being damaged by friction with the outside world, the two sides of the four-layer cloth are compounded with LDPE protective film. The pre-press molding temperature is 100°C and the molding pressure is 2.5MPa. , constant temperature and pressure for 15 minutes to obtain a barrier layer.

[0040] Then tak...

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Abstract

The invention discloses a bulletproof formed part comprising at least two barrier layers and buffer layers between every two barrier layers, wherein the barrier layers and the buffer layers comprise aplurality of superposed weftless fabrics; the weftless fabrics comprises fibers of which the strength is at least 15 cN / dtex and the modulus is at least 390 cN / dtex; in each buffer layer, the anglesformed by the fibers in the adjacent weftless fabrics are 40-60 DEG; and in each barrier layer, the angles formed by the fibers in the adjacent weftless fabrics are 85-95 DEG. The invention also provides a preparation method of the bulletproof formed part. The barrier layers can effectively reduce the bullet speed due to the high strength, and the buffer layers are beneficial to the absorption andthe diffusion of the kinetic energy of the bullets due to the same property in all directions; and therefore, under the alternate actions of the barrier layers and the buffer layers, the bulletproofformed part has favorable bulletproof function and can protect the user from being hurt by bullets when used as a bulletproof helmet or bulletproof vest.

Description

technical field [0001] The invention relates to personal protective equipment, in particular to a bulletproof molded part and a preparation method thereof. Background technique [0002] Bulletproof vests and bulletproof helmets are personal protective equipment worn in order to ensure the survival of people in specific environments. They can absorb and dissipate the kinetic energy of warheads and shrapnel, prevent penetration, and effectively protect the protected parts of the human body. [0003] Although the protection level of traditional steel materials can meet the bulletproof requirements, due to the shortcomings of steel materials such as heavy weight, too strong rigidity and poor comfort, not only will the wearer's mobility be restricted, but also there will be bouncing injuries. danger. With the continuous advancement of material science, the advent of high-tech synthetic fibers such as aramid fiber (Kelar) and ultra-high molecular weight polyethylene (UHMWPE) fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H1/02F41H1/00
Inventor 周成程
Owner 宁波荣溢化纤科技有限公司
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