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Preparation of fragment-resistant sandwich-structure aramid composite cloth

A sandwich structure, composite fabric technology, applied in protective equipment, protective clothing, synthetic resin layered products, etc., can solve the problem of bulletproof and stab-proof products such as poor flexibility and wearing comfort, poor comfort and flexibility, and insufficient market competitiveness. problem, to achieve the effect of dual performance guarantee of anti-stab, perfect functionality and comfort, and excellent anti-fragment performance

Inactive Publication Date: 2016-01-20
BEIJING AEROSPACE RATE MECHANICAL & ELECTRICAL ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are usually two kinds of traditional aramid bulletproof composite materials. One is non-weft fabric made by special unidirectional composite process. Hard, with poor comfort and flexibility; the other is woven fabric, which is made of glue-coated or dipped glue and hot-pressed laminated. It is mainly used for stab-proof products, and its hardness is greater than the former.
Due to the hard texture, its bulletproof and stabproof products have poor flexibility and wearing comfort, especially in foreign markets.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation of fragment-resistant sandwich-structure aramid composite cloth
  • Preparation of fragment-resistant sandwich-structure aramid composite cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Laminated with two layers of non-weft fabric and one layer of woven fabric

[0029] First, take 1000g of acrylate aqueous solution with a solid content of 50%, 100g of polychloroprene, 5g of blocked isocyanate crosslinking agent, 6g of coupling agent, and add 600g of water to prepare an adhesive with a solid content of 35%. Mix well and set aside. Prepare the longitudinal unidirectional fiber prepreg on the roller of the winding machine; rotate it 90°, spread it on the roller for the second layer preparation, and make a non-woven fabric composited by two layers of unidirectional fiber prepreg, The cloth sample is cut into a fixed version, after the surface of the two layers of non-weft cloth is coated with glue, the woven fabric is sandwiched in the middle and pressed to form a sandwich structure aramid fiber composite cloth, using a 0.5 MN pressure forming machine, at a temperature of 160, Compress under a pressure of 10MPa, deflate continuously for 3 to 5 times, and ...

Embodiment 2

[0031] First, weigh 1000g of acrylate aqueous solution with a solid content of 50%, 100g of polychloroprene, 5g of blocked isocyanate crosslinking agent, and 6g of coupling agent, add water to form an adhesive with a solid content of 35%, and mix well for later use. Lay the woven fabric on the film-coated roller, prepare unidirectional fiber prepreg on it, rotate it 90° and spread it on the roller with the reverse side facing up, and prepare unidirectional fiber prepreg on it. Aramid composite cloth with sandwich structure was obtained, and the cloth sample was cut into a fixed version and then hot-pressed. A 0.5 MN pressure forming machine was used to press at a temperature of 160 and a pressure of 10 MPa. Cold pressing for 5 minutes. 27 layers + 1 layer of EVA are used to make bulletproof and stab-resistant target sheets. The bulletproof and stab-proof performances are tested according to the Ministry of Public Security GA141-2010 "Police Body Armor" and GA68-2008 "Police S...

Embodiment 3

[0033] Change the polychloroprene in embodiment 2 to 5g, the coupling agent to 5g, and all the other conditions remain unchanged. Bullet-proof and stab-proof performance are tested according to Ministry of Public Security GA141-2010 "Police Body Armor" and GA68-2008 "Police Stab-proof Clothing". The results are shown in Table 1.

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Abstract

The invention provides novel fragment-resistant sandwich-structure aramid composite cloth, and relates to the field of individual protection. The fragment-resistant sandwich-structure aramid composite cloth is formed by two layers of no-woven cloth or unidirectional fiber prepreg and one layer of woven cloth in a compositing mode, and the layers adhere together through an adhesive. The surface density of the single-layer no-woven cloth is 210 g / m<2>+ / -5 g / m<2>, the surface density of the unidirectional fiber prepreg is 105 g / m<2>+ / -5 g / m<2>, and the surface density of the woven cloth is 200 g / m<2>+ / -5 g / m<2>. The surface density of each layer of sandwich-structure aramid composite cloth pattern is 620 g / m<2>+ / -15 g / m<2> or 410 g / m<2>+ / -15 g / m<2>. The invention further provides a preparation method of the fragment-resistant sandwich-structure aramid composite cloth. A bulletproof and stab-resistant clothes product prepared from the sandwich-structure aramid composite cloth has both functionality and comfort, is excellent in stab residence and fragment resistance, is high in wearing comfort due to the good material flexibility and can obviously improve the combat efficiency of combat staff.

Description

Technical field: [0001] The invention relates to an aramid fiber composite cloth with an anti-fragment sandwich structure, and also relates to a preparation method of an aramid fiber composite cloth with an anti-fragment sandwich structure. Background technique: [0002] As a high-performance fiber, aramid has been widely used in the field of personal protection. It is formed by lamination of multi-layer aramid non-woven fabrics, woven fabrics, etc., and then used in conjunction with other materials, which can effectively defend against bullet impact and bayonet threats. However, the use of protective equipment increases the load on the wearer to a certain extent, hindering its mobility. Therefore, improving the comfort on the basis of ensuring the protection level is the focus and direction of the current research work in the field of personal protection. [0003] There are usually two kinds of traditional aramid bulletproof composite materials. One is non-weft fabric made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B7/12B32B27/12
CPCB32B5/26B32B7/12B32B2262/02B32B2571/02
Inventor 陈虹吴中伟许冬梅艾青松方心灵刘元坤张静潘智勇
Owner BEIJING AEROSPACE RATE MECHANICAL & ELECTRICAL ENG CO LTD
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