JPH0414277B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a wholly aromatic polyamide fiber fabric containing one or more layers of a wholly aromatic polyamide fiber fabric (fibrous structures such as woven fabrics, knitted fabrics, non-woven fabrics, etc.; hereinafter the same) to which highly hard ceramic particles are fixed. This invention relates to a laminated bulletproof and blade protective device. (Prior Art) Conventionally, protective equipment such as bulletproof plates and bulletproof gilets that protect the body from fragments caused by bullets, knives, and explosives have been made of metal plates, ceramic plates, strong nylon, or fully aromatic polyamide fibers (for example, manufactured by DuPont). Kevlar) fabrics or a combination of these have been used. However, metal plates are heavy and
It lacks maneuverability, the ceramic plate is heavy, and there is a risk that the shattered ceramic will fly away when hit by a bullet. On the other hand, strong nylon and Kevlar are flexible and can provide protective equipment with relative mobility, but strong nylon has inferior bulletproof performance compared to Kevlar, and requires an increase in the number of laminated layers. As a result, it had to be thick and heavy, and it still lacked maneuverability. Recently, Kevlar is considered to be the most effective material for protective gear for police officers, self-defense personnel, security guards, and other people who may be exposed to deadly weapons.
However, although protective equipment made of Kevlar fiber fabric has a great protective effect against bullets, it has the disadvantage that it is surprisingly easily penetrated by sharp objects such as knives and ice picks. (Problems to be Solved by the Invention) The present invention improves the drawbacks of the conventional protective equipment as described above, and provides a lightweight protective equipment that not only protects against bullets but also protects against sharp knives. The aim is to provide protective equipment with excellent mobility. In other words, it is an attempt to improve the problems of conventional protective equipment, such as its heavy weight and lack of mobility, as well as its poor protection against sharp knives. Furthermore, Kevlar is a relatively expensive material, and it is desirable to reduce the amount of Kevlar used as much as possible not only from the perspective of weight reduction but also from the economic perspective. Since the fully aromatic polyamide fiber fabric to which is fixed has excellent ballistic resistance and edge resistance, the total number of laminated sheets can be significantly reduced. (Means for Solving the Problems) The present invention solves the above problems and provides an inner layer of a laminate of fully aromatic polyamide fiber fabrics in which a plurality of sheets are laminated. Alternatively, the protective equipment is constructed using a material in which one or more layers of wholly aromatic polyamide fiber fabric to which high-hardness ceramic particles are fixed are laminated close to the outer layer. The fully aromatic polyamide fiber fabric to which high-hardness ceramic particles are fixed, which characterizes the present invention, is selected from silicon carbide, aluminum oxide, boron carbide, silicon nitride, alumina-zirconia composite oxide, etc., or a combination thereof. High-hardness ceramic particles obtained by using phenolic resin, epoxy resin, urea resin, etc. as a binder are uniformly and densely applied to the surface (one or both sides) of a wholly aromatic polyamide fiber fabric and adhered to the fabric to hold it firmly. High hardness ceramic particles have a Knoop hardness of 1000Kgf/mm ²
These are the so-called abrasive grains for grinding and polishing, and these abrasive grains deform and abrade bullets, fragments from explosives, sharp knives, etc., and also absorb and disperse impact energy by crushing and falling off particles. , can reduce the penetration ability. For this purpose, the particle size is preferably in the range of particle size #40 to #400 (according to JIS R 6001). Particles are #400
If the particle size is finer, the above effect cannot be achieved, and if the particle size is larger than #40, the fabric to which the particles are fixed will be stiff and heavy, resulting in poor maneuverability. In addition, the amount of particles fixed varies depending on the particle size and particle density (true specific gravity).
Approximately 200-800g/ ^m2 , preferably 300-700g/ ^m2
The effects of the present invention are exhibited within this range. 800
If the amount of adhesion is more than g/m ² , the stiffness of the fabric to which the particles are adhered will be large and it will be heavy, resulting in poor mobility, and if it is less than 200 g/m ² , the desired protective effect will not be obtained. The fully aromatic polyamide fiber fabric that fixes the high-hardness ceramic particles is selected from ordinary weaves such as plain weave, diagonal weave, and twill weave with a mass of 250 g/m ² or more. A leno weave is also preferable, and by fixing high-hardness ceramic particles to the entire front and back surfaces of the mesh, the deformation and abrasion effects of bullets, etc. are further increased, and the ballistic resistance and
Greater blade resistance. Moreover, before fixing the particles, a flexible resin treatment such as synthetic rubber latex may be performed in advance as a sealing treatment so as not to impair the flexibility of the fabric. The other element constituting the protective equipment of the present invention, the wholly aromatic polyamide fiber fabric to which particles are not fixed, may be any fabric that has been conventionally used for protective clothing at home and abroad, and has a mass of 250 g/m ² or more. plain weave, basket weave,
For materials such as twill weave, the protective performance may decrease if it gets wet with water, so water repellent treatment should be applied as necessary. The protective equipment of the present invention includes a fully aromatic polyamide fiber fabric in which the high-hardness ceramic particles are fixed to the inner layer or near the outer layer of a laminate in which a plurality of (preferably 5 or more) fully aromatic polyamide fiber fabrics are laminated. Constructed by laminating one or more layers. The number of layers of each fabric is determined by the purpose and use of protection. A laminate of textiles without particles fixed to them is
In addition to simply superimposing them, the entire surface may be sewn together at appropriate intervals to be integrated. The product form of the protective equipment of the present invention is to wrap the above-mentioned laminated material with a highly flexible cover material such as cotton cloth and sew the periphery to make a bulletproof protective gear, or to make it in a test that may cause an explosion. Alternatively, it can be put to practical use in a form suitable for each purpose, such as a protective shielding material in the production process or a composite type protective plate made by impregnating and solidifying the above laminated material with epoxy resin or the like. (Function) The protective equipment of the present invention has high hardness ceramic particles firmly adhered to the surface of the fully aromatic polyamide fiber fabric laminated near the inner layer or outer layer of the protective equipment, and is capable of resisting bullets, fragments from explosives, and sharp objects. When hit by a knife, etc., the tips of the blades are deformed or worn out, and the impact energy is absorbed or dispersed by crushing or falling off the high-hardness ceramic particles.
It has the effect of significantly reducing penetration ability or impact force on the body. (Example) The superiority of the protective equipment of the present invention will be specifically explained below with reference to Examples. First, two types of fully aromatic polyamide fiber fabrics to which high-hardness ceramic particles, which are the constituent elements of the present invention and are the most characteristic of the present invention, are fixed, were prepared using the following procedure. One of them is a plain weave cloth with a mass of 280 g/m ² made of 1000 denier fully aromatic polyamide fibers (Kevlar 29 yarns) with a 2S/25 mm twist (31 lengths/width/25 mm) and treated with an NBR latex compound treatment solution. Silicon carbide abrasive grains #80 were firmly adhered to the entire surface of this one side using a phenol resin adhesive at a rate of approximately 400 g/m ² to make the total mass 920 g/m ² (this (symbol A). The other one is made of 1140 denier fully aromatic polyamide fiber (Kevlar 49 yarn) with 5Z/25mm twist, 16 vertical and horizontal fibers/25mm, with a mass of 180
g/m ² mesh plain weave cloth was sealed in the same way, and then aluminum oxide abrasive grains #180 were firmly adhered to the front and back surfaces of the mesh cloth at a rate of 350 g/m ² using an epoxy resin adhesive to reduce the total mass. 750g/m ² (symbol B). The wholly aromatic polyamide fiber fabric to which particles are not fixed, which is another component of the present invention, is exactly the same as that used as the base fabric of symbol A, and was treated with water repellent ( (symbol K). In order to test the bullet resistance and cut resistance, six types of laminates combining A and K and six types of laminates combining B and K were prepared as specific examples of the protective equipment of the present invention, and each was wrapped in cotton cloth. , and the peripheral edge was sutured to prepare a specimen. For comparison, a laminate made of only K was also used as a conventional protective equipment.
I created a type and tested it. Ballistic resistance tests are conducted by foreign public inspection agencies using MIL-C-44050 and NILECJ-STD-
The test was conducted based on the 0101.01 standard, and the results shown in Table 1 were obtained. The cut resistance test was conducted using the various types of protective equipment listed above with a thickness of 15 mm.
A knife blade attached to a cm oil clay wall and fixed to a 1Kg weight (craft knife, blade length 40mm, width
18 mm, sharp angle of the blade 25 degrees, mass 15 g) and a similarly fixed sharp ice pick (3 mmφ, acute angle of the blade
10 degrees, weight 25 g) was naturally dropped from a height of 1 m directly above, and evaluated by the number of sheets penetrated. The results are shown in Table-2. A-2/K-5 in the table indicates that two sheets of A were laminated on five sheets of K. Also, 48x16
(Unit: mm) represents the diameter x depth of the bullet hole in oil clay.

【table】

[Table] (Effects of the Invention) As shown in Tables 1 and 2 above, the protective equipment according to the present invention has a higher penetration force and impact force for bullets or blades compared to conventional Kevlar fabric only. It is highly effective in preventing physical damage to the wearer. This is because the high-hardness ceramic particles firmly adhered to the surface of the fully aromatic polyamide fiber fabric, which is a component of protective gear, deform or wear the tips of bullets and blades, and also cause the high-hardness ceramic particles to break or fall off. This is to absorb or disperse impact energy. These effects make it possible to significantly reduce the number of layers of fully aromatic polyamide fiber fabric, which not only reduces the weight of various protective equipment and improves mobility, but also improves economic efficiency. Improvements have been made.

Claims (1)

[Scope of Claims] 1 A fully aromatic polyamide fiber fabric with high hardness ceramic particles fixed close to the inner layer or outer layer of a laminate of a plurality of laminated fully aromatic polyamide fiber fabrics (textile structures such as woven fabrics, knitted fabrics, non-woven fabrics, etc.) Bulletproof and blade-proof protective equipment characterized by being made of a material made by laminating one or more layers of group polyamide fiber fabrics (fiber structures such as woven, knitted, and non-woven fabrics). 2 The above-mentioned high hardness ceramic particles have a Knoop hardness
Selected from silicon carbide, aluminum oxide, boron carbide, silicon nitride, alumina-zirconia composite oxide, etc. or a combination thereof with a particle size of 1000Kgf/mm ² or more, and the particle size is #40 to #400.
(JIS R 6001), and the amount of particles fixed is 200~
The bulletproof and blade-proof protective equipment according to claim 1, which has a weight of 800 g/m ² .