Ceramic composite material for preventing 12.7 mm armor-piercing incendiary bomb and preparation method thereof
A technology of ceramic composite materials and incendiary bombs, which is applied in the direction of protective equipment, protective equipment, chemical instruments and methods, etc., can solve the problems of high surface density and low performance of boron carbide, so as to promote density, improve mechanical properties, and simple process Effect
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[0027] The present invention also proposes a method for preventing 12.7 mm of a ceramic composite material of the bombing bomb, such as figure 1 As shown, including:
[0028] S1: Boron oxide, carbon nanotubes or boride titanium carbide, carbon nanotubes or boride, which are weighed according to the mass percentage (90 ~ 98): (2 ~ 10), and preprocessing the boron boron, obtaining a particle size of D50 = 0.2 to 0.5 μm. Carbide boron;
[0029] S2: Add the carbon nanotubes or boride, ball milling 2 to 3 hours to the pretreated boron carbide, and obtain a mixture;
[0030] The mixture is spray dried to obtain a composite particle;
[0031] S3: According to the actual needs, the shape, size and thickness of the boron carbide composite ceramic layer are designed. According to the shape of the boron oxide composite ceramic layer, the size is selected according to the thickness of the boron carbide composite ceramic layer, which will be weighed. The composite particles are filled in the s...
Embodiment 1
[0051] This example provides a ceramic composite of 12.7 mm to penetrate the bombing bomb, the ceramic composite is a layered structure, from topod, including polyurea, aramid layer, boron-composite ceramic layer, carbon fiber layer, The PE layer and the polyurea layer; the thickness of the boron carbide composite ceramic layer is 9.5 mm, the thickness of the aramid layer is 0.2 mm, the thickness of the carbon fiber layer is 2 mm, the thickness of the PE layer is 10 mm, the thickness of the polyurea layer is 0.5 mm;
[0052] A silicon carbide and carbon nanotubes having a mass percentage of 97: 3 were included in the boron carbide composite ceramic layer.
[0053] This embodiment also provides a method of preparing a ceramic composite of 12.7 mm permeable bombing, including the following steps:
[0054] S1: The boron carbide and carbon nanotubes are weighed according to the mass percentage of mass, and the carbide, carbon nanotubes are prepared, and a boron carbide of the particle...
Embodiment 2
[0070] This embodiment provides a ceramic composite material that is 12.7 mm permeable bombing, compared with Example 1, carbide composite ceramic in the carbide composite ceramic layer of the present embodiment includes a mass percentage of 95: 5 Boron oxide and carbon nanotubes.
[0071] The silicon carbide composite ceramic layer has a thickness of 10 mm, a aramid layer having a thickness of 0.3 mm, and the carbon fiber layer has a thickness of 1.5 mm, and the thickness of the PE layer is 11 mm, and the thickness of the polyurea layer is 0.5 mm.
[0072] Others in Example 1.
[0073] The surface density of the ceramic composite material provided in this embodiment is 39.5 kg / m 2 . The ceramic composite prepared by the present embodiment was carried out by a target test of 12.7 mm permeable bombs, not penetrated.
[0074] The anti-bending strength of the boron carbide composite ceramic prepared in this example is 550 MPa, and the fracture toughness is 4.5 MPa.m. 1 / 2 The elas...
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Abstract
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