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A kind of bulletproof composite material and its preparation method and application

A bulletproof composite material and a technology of the composite material, which are applied in the field of bulletproof composite materials and their preparation, can solve the problems affecting the ballistic resistance, poor light resistance, heavy weight of bulletproof armor, etc., and achieve good high and low temperature resistance, strong wearing comfort, extremely The effect of good thermal insulation

Active Publication Date: 2021-06-22
BEIJING PROTECH NEW MATERIAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of para-aramid fiber is low, the weight of the bulletproof armor made is heavy, and the light resistance is poor. When exposed to visible light and ultraviolet light, it will produce photodecomposition, resulting in the decline of mechanical properties and color change, which affects the bulletproof performance; heterocyclic aramid fiber Fiber (F-3), due to high raw material costs, low production efficiency, and limited application development, has led to high product prices, and is only used in military and a few civilian high-end fields
[0003] It can be seen that the above-mentioned existing bulletproof composite materials obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.

Method used

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  • A kind of bulletproof composite material and its preparation method and application

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Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of a bulletproof composite material:

[0030] 1) After weighing 75g of water-based thermoplastic polyurethane and 75g of water-based polyolefin resin and mixing them uniformly, dilute with water to form a stable uniform emulsion, and then evenly coat the mixed emulsion on the surface of the reinforced polyimide fiber. After the water evaporates, Obtain modified polyimide fiber 1;

[0031] 2) Arranging the modified polyimide fibers 1 in parallel in one direction to form a fiber layer 1 arranged in parallel in one direction;

[0032] 3) Soak the fiber layer 1 in polyurethane resin to make a prepreg 1 with fibers arranged in parallel in one direction, and then place two layers of prepreg 1 with fibers arranged in parallel in one direction according to the fiber axis of 0° / 90° The angle of rotation is cross-laminated, and the bulletproof composite material 1 is compounded by a composite machine.

Embodiment 2

[0034] Preparation of a bulletproof composite material:

[0035] 1) Weigh 125g of water-based thermoplastic polyurethane and 25g of water-based polyolefin resin and mix them uniformly, dilute with water to form a stable uniform emulsion, and then evenly coat the mixed emulsion on the surface of the reinforced polyimide fiber. After the water evaporates, Obtain modified polyimide fiber 2;

[0036] 2) Arranging the modified polyimide fibers 2 in parallel in one direction to form a fiber layer 2 arranged in parallel in one direction;

[0037] 3) Soak the fiber layer 2 in polyurethane resin to make a prepreg 2 with fibers arranged in parallel in one direction, and then place four layers of prepreg 2 with fibers arranged in parallel in one direction at 0° / 45° / 90° / 135° fiber axis rotation angle for cross-lamination, compounded by a composite machine to make a bulletproof composite material 2.

Embodiment 3

[0039] Preparation of a bulletproof composite material:

[0040] 1) Weigh 25g of water-based thermoplastic polyurethane and 125g of water-based polyolefin resin and mix them uniformly, dilute with water to form a stable uniform emulsion, and then evenly coat the mixed emulsion on the surface of the reinforced polyimide fiber. After the water evaporates, Obtain modified polyimide fiber 3;

[0041] 2) Arranging the modified polyimide fibers 3 in parallel in one direction to form a fiber layer 3 arranged in parallel in one direction;

[0042] 3) Soak the fiber layer 3 in epoxy resin to make a prepreg 3 with fibers arranged in parallel in one direction, and then place two layers of prepreg 3 with fibers arranged in parallel in one direction according to 0° / 90° fibers Cross-lamination is carried out according to the rotation angle of the shaft, and the bulletproof composite material 3 is compounded by a composite machine.

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Abstract

The invention discloses a bulletproof composite material, which is a resin-based composite material with polyimide fibers as reinforcements, wherein the mass percentage of polyimide fibers is 60% to 90%, and the resin matrix The mass proportion is 10% to 40%. The polyimide fiber is a modified fiber with an inert modifier for interface treatment, and the inert modifier is formed by mixing water-based thermoplastic polyurethane and water-based polyolefin resin in a certain proportion. The invention also discloses the preparation method and application of the bulletproof composite material. The invention adopts polyimide fiber as reinforcement, after special interface treatment, infiltrates in matrix resin according to a certain arrangement, and composites with matrix resin through specific composite process, the prepared bulletproof composite material has higher tensile strength. Tensile strength and tensile modulus, good high and low temperature resistance, light weight, good flame retardancy and spinnability, suitable for making soft and comfortable body armor and bulletproof armor materials.

Description

technical field [0001] The invention relates to the field of bulletproof technology, in particular to a bulletproof composite material and its preparation method and application. Background technique [0002] At present, fiber-reinforced resin-based composite materials are mostly used in bulletproof composite materials, and ultra-high molecular weight polyethylene (UHMWPE) fibers and aramid fibers are mostly used as fibers. The low melting point of UHMWPE fibers limits its application in high temperature environments, and its poor interfacial adhesion increases the possibility of interfacial debonding, thus affecting its application in the field of bulletproof. Aramid fiber currently includes para-aramid fiber and heterocyclic aramid fiber (F-3). The strength of para-aramid fiber is low, the weight of the bulletproof armor made is heavy, and the light resistance is poor. When exposed to visible light and ultraviolet light, it will produce photodecomposition, resulting in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/04B32B27/02B32B27/28B32B27/12B32B37/00F41H1/02F41H1/08C08L75/04C08L79/08C08L63/00C08J5/06D06M15/227D06M15/564D06M101/30
CPCB32B5/26B32B37/00B32B2260/021B32B2260/046B32B2262/02B32B2307/306B32B2307/3065B32B2571/02C08J5/06C08J2363/00C08J2375/04C08J2479/08D06M15/227D06M15/564D06M2101/30F41H1/02F41H1/08
Inventor 周庆
Owner BEIJING PROTECH NEW MATERIAL SCI CO LTD
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