bulletproof material
A fiber layer and mesh technology, applied in the field of bulletproof materials, can solve problems such as poor wearing feeling, achieve excellent wearing feeling and reduce back deformation
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Embodiment 1
[0029] According to Example 1 of the present invention, the web of high-strength fibers was an aramid woven fabric comprising aramid fibers as warp and weft. The mass per unit area of each woven fabric is 150 to 500g / m 2 . When the mass per unit area is less than 150g / m 2 When, there will be gaps between the woven fabrics, so the ballistic performance will be reduced. On the other hand, woven so that the mass per unit area is greater than 500 g / m 2 , production efficiency will drop.
[0030] Because aramid fibers are susceptible to moisture, their ballistic resistance decreases over time. To solve this problem, the aramid woven fabric of the first fiber layer 110 may be coated with a water repellant including fluorocarbon, crosslinking agent, and hardness enhancing resin.
[0031] The fluorocarbon provides water repellency to the first fiber layer 110 . Hydroxylated perfluoroalkyl ethyl acrylate copolymers can be used as fluorocarbons.
[0032] Meanwhile, in a harsh e...
Embodiment 2
[0053] According to Embodiment 2 of the present invention, the first fiber layer 210 and the third fiber layer 230 include aramid woven fabric as a network of high-strength fibers. The aramid woven fabric may be coated with a water repellent comprising a fluorocarbon, a crosslinking agent, and a hardness enhancing resin. Here, the crosslinking agent is an isocyanate compound, and the hardness-enhancing resin is polyvinyl acetate.
[0054] The second fiber layer 220 comprises a carbon fiber mesh. The carbon fiber mesh may be a woven fabric comprising carbon spun yarns as warp and weft yarns, and may be coated with a composition comprising phenol resin and polyvinyl butyral resin.
[0055] The bulletproof material 200 includes the first to the third fiber layers 210, 220 and 230 of appropriate layers to have a mass per unit area that meets the weight reduction requirements of the bulletproof vest, for example, the mass per unit area is 3 to 6.8 kg / m 2 .
[0056] A composite s...
preparation Embodiment 1
[0080] Use aramid fiber with a fineness of 840 denier (KOLON INDUSTRIES, HERA HF100) was plain weaved as warp and weft to prepare aramid woven fabric. The warp density and weft density of the aramid woven fabric were 105 threads / cm. at about 60°C with Na 2 CO 3 The woven fabric is treated with a detergent, then washed and dried.
[0081] Next, soak the washed woven fabric in a water repellant. The water repellent comprises 3% by weight of hydroxylated perfluoroalkyl ethyl acrylate copolymer, 3% by weight of polyvinyl acetate, 3% by weight of toluene diisocyanate, 0.3% by weight of dipropylene glycol, 0.3% by weight of apple acid and 90.4% by weight water. The woven fabric impregnated with the water repellent was heat-treated at about 160° C. for 60 seconds to obtain an aramid woven fabric. The mass per unit area of the aramid woven fabric is 200g / m 2 .
[0082]
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Abstract
Description
Claims
Application Information
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