CN221802661U - Tank armor protective layer - Google Patents

Abstract

The application discloses a tank armor protective layer. Comprises n tank armor protective layers, wherein n is a positive integer between 1 and 50; each tank armor protective layer is mutually bonded by bonding and unloading the energy-absorbing protective layer. The bonding layer formed by using the bonding material with a certain energy absorption effect has certain viscosity and energy absorption, and can generate energy absorption and dislocation movement in the collision and puncture processes, thereby improving the protection capability. After the protective layer of the multilayer tank armor protection type is added, the energy absorption and puncture protection effects can be further improved, and the armor protection type capability of the protective layer can be further improved. The preparation process is simple.

Description

A tank armor protection type protective layer

Technical Field

The present application relates to a tank armor protection type protective layer, belonging to the field of protective equipment.

Background Art

Helmets are common protective tools in daily life, and the protective performance of the helmet shell is an important performance of the helmet. However, the current helmet shell is mainly made of a single plastic or a single fiber-reinforced resin-based composite material. When the shell is made of a single plastic, its rigidity is poor. Increasing the rigidity by increasing the thickness will increase the weight of the product, thereby increasing the burden on the head/neck. It is also very easy to split when hit after aging, which makes the comfort and sense of security worse. When the shell is made of a single fiber-reinforced resin-based composite material, it is easy to break when subjected to shear force, and the safety and anti-puncture effect is poor. Therefore, the safety of the helmet shell still needs to be improved.

Summary of the invention

In order to improve the protective performance of protective equipment, especially helmets, the present application provides a tank armor protection type protective layer.

According to one aspect of the present application, there is provided a tank armor protection type protective layer, comprising n layers of tank armor protection type layers, where n is selected from a positive integer between 1 and 50;

When n is 1, the tank armor protection layer is covered by a bonding force-unloading energy-absorbing protection layer;

Each layer of tank armor protection is bonded to each other through a bonding force-discharging and energy-absorbing protective layer.

Specifically, from outside to inside, they are the first tank armor protection layer, the first bonding force unloading energy absorption protection layer, the second tank armor protection layer, the second bonding force unloading energy absorption protection layer, the third tank armor protection layer, and so on.

The material of the tank armor protection layer is selected from at least one of fiber-reinforced resin, PC material, ABS material, PP material, aramid fiber (such as Kevlar), ultra-high molecular weight PE, nylon fiber, carbon fiber, glass fiber, etc.;

Optionally, the fiber-reinforced resin comprises fibers and resin;

The fiber is selected from at least one of carbon fiber, glass fiber, aramid fiber, ultra-high molecular weight PE, and nylon fiber;

The resin is selected from at least one of EPOXY resin, PC resin and phenolic resin.

Optionally, two adjacent tank armor protection layers are made of different materials.

Optionally, the material of the outermost tank armor protective layer is not Kevlar.

The thickness of the tank armor protection layer is 0.05 to 3 mm;

Optionally, the thickness of the tank armor protection layer is 0.2 to 2 mm.

Optionally, the outermost tank armor protection layer is thicker than the inner tank armor protection layer.

Optionally, the outer tank armor protection layer is thicker than the inner tank armor protection layer.

The bonding force-unloading energy-absorbing protective layer contains bonding material, toughness-enhancing material and energy-absorbing material.

In the bonding unloading energy absorbing protective layer, the mass content of the toughness enhancing material and the energy absorbing material is no more than 85%;

Optionally, the mass content of the toughness enhancing material is 20 to 75%;

Optionally, the mass content of the energy absorbing material is 30-85%.

The bonding material is selected from at least one of polyurethane, polypropylene, PA, PES, TPU, EVA, PO, EAA, etc.; the bonding material has a single material or a composite material with both adhesion and energy absorption properties.

The weight average molecular weight of the bonding material is 5000 to 3500000. Preferably, the weight average molecular weight of the bonding material is 30000 to 150000.

The toughness enhancing material and energy absorbing material are selected from dispersed particles and/or mesh-like materials;

The dispersed particles are selected from organic, inorganic or metal hollow beads or foams.

The dispersed particles are selected from at least one of thermosetting resin hollow microspheres, hollow glass beads, hollow titanium beads, titanium microfoams, and aluminum microfoams;

The mesh material is selected from at least one of ultra-high molecular weight PE, aramid fiber, and nylon fiber.

According to another aspect of the present application, a method for preparing the above-mentioned tank armor protection type protective layer is provided, comprising the following steps:

The toughness enhancing material and the energy absorbing material are impregnated into the bonding material to obtain a bonding force unloading energy absorbing protective layer, and the tank armor protective layer is bonded together through the bonding force unloading energy absorbing protective layer to obtain the tank armor protective protective layer.

According to another aspect of the present application, there is provided an application of the above-mentioned tank armor protection type protective layer for the outer shell of protective equipment.

The protective equipment includes a helmet, elbow pads, arm guards, knee pads, neck guards, shin guards, ankle guards, protective vests, protective pants, and protective shoes.

In the present application, EPOXY resin is epoxy resin;

PC is polycarbonate resin;

ABS is acrylonitrile-butadiene-styrene copolymer;

PP is polypropylene;

PA is polyamide resin;

PES is polyethersulfone;

TPU is thermoplastic polyurethane elastomer;

EVA is ethylene-vinyl acetate copolymer;

PO is a polyolefin copolymer;

EAA is ethylene-acrylic acid copolymer;

PE is polyethylene.

The beneficial effects of this application include:

1) The tank armor protection type protective layer provided in the present application uses an adhesive layer formed by an adhesive material with a certain energy absorption effect, which has a certain viscosity, toughness and energy absorption. During the puncture process, it can produce dislocation movement, thereby improving the protection capability.

2) The tank armor protection type protective layer provided in this application will further enhance the energy absorption effect after adding multiple layers of tank armor protection type protective layer, and can further enhance the tank armor protection type capability.

3) The method for preparing the tank armor protection type protective layer provided in the present application has a simple preparation process.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of the tank armor protection type protective layer prepared in Example 1 of the present application.

List of parts and reference numerals:

1. The first tank armor protection layer, 2. The bonding force unloading energy absorption protection layer, 3. The second tank armor protection layer.

DETAILED DESCRIPTION

The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

Unless otherwise specified, the raw materials in the examples of this application were purchased through commercial channels.

In this embodiment, the polyurethane adhesive is purchased from Leroyol, and the average molecular weight is 30,000-100,000; the fiber-reinforced resin is obtained according to the preparation method in US9840058B2; PC materials, ABS materials, PP materials, etc. are all purchased through commercial channels.

Example 1

The required bonding material is made by impregnating 300g of hollow glass microspheres and 700g of Kevlar fabric sheets with 1000g of polyurethane material with an average molecular weight of 30,000, and bonding the first tank armor protective layer 1 made of fiber reinforced resin (specifically carbon fiber, glass fiber, Kevlar fiber mixed reinforced epoxy resin) and the second tank armor protective layer 3 made of PC material to obtain a tank armor protective layer in which the first tank armor protective layer 1, the adhesive layer 2 and the second tank armor protective layer 3 are bonded in sequence, as shown in Figure 1.

The thickness of the first tank armor protection layer 1 is 1.0 mm, and the thickness of the second tank armor protection layer 3 is 0.5 mm.

The tank armor protective layer prepared in this embodiment is used for the helmet shell or armor and protective gear, and the polyurethane material is used as the bonding material. The bonding layer formed by the polyurethane material has certain viscosity, toughness and energy absorption. During the puncture process, it can produce dislocation movement, thereby improving the tank armor protective capability. This embodiment only describes the case where the number of layers is three, and the same applies when the number of layers is more.

The helmet was tested for penetration resistance. The results showed:

The helmet of Example 1 was subjected to the penetration energy (29.4 J) test of Class II helmets in GJB1564A, and the helmet was not penetrated, thus meeting the technical requirements.

The helmet of Example 1 was subjected to a puncture resistance test in T/JSEBA. The helmet was not penetrated by a 3.0 kg steel cone falling from a height of 1.0 m for 2 times, thus meeting the standard requirements.

Example 2

The required bonding material is made by impregnating 300g hollow glass microspheres and 630g nylon fabric sheet (N1260 nylon cord cloth) with 1000g polyurethane material with an average molecular weight of 30,000, and bonding the first tank armor protection layer 1 made of fiber reinforced resin (specifically carbon fiber, glass fiber, Kevlar fiber mixed reinforced epoxy resin) and the second tank armor protection layer 3 made of Kevlar fiber reinforced PC resin material to obtain a tank armor protection layer in which the first tank armor protection layer 1, the adhesive layer 2 and the second tank armor protection layer 3 are bonded in sequence, as shown in Figure 1.

The thickness of the first tank armor protection layer 1 is 1.2 mm, and the thickness of the second tank armor protection layer 3 is 0.7 mm.

The tank armor protective layer prepared in this embodiment is used for the helmet shell or armor and protective gear, and the polyurethane material is used as the bonding material. The bonding layer formed by the polyurethane material has certain viscosity, toughness and energy absorption. During the puncture process, it can produce dislocation movement, thereby improving the tank armor protective capability. This embodiment only describes the case where the number of layers is three, and the same applies when the number of layers is more.

The helmet of Example 2 was subjected to the penetration energy test (29.4 J) of Class II helmets in GJB1564A and the puncture resistance test in T/JSEBA. The results were similar to those of Example 1, and the helmet was not penetrated, meeting the technical requirements.

Example 3

The required bonding material is made by impregnating 300g hollow glass microspheres and 630g nylon fabric sheet (N1260 nylon cord cloth) with 1000g polyurethane material with an average molecular weight of 30,000, and bonding the first tank armor protection layer 1 made of fiber reinforced resin (specifically carbon fiber, glass fiber, Kevlar fiber mixed reinforced epoxy resin) and the second tank armor protection layer 3 made of Kevlar fiber reinforced epoxy resin material to obtain a tank armor protection layer in which the first tank armor protection layer 1, the bonding layer 2 and the second tank armor protection layer 3 are bonded in sequence, as shown in Figure 1.

The thickness of the first tank armor protection layer 1 is 1.0 mm, and the thickness of the second tank armor protection layer 3 is 0.8 mm.

The tank armor protection type protective layer prepared in this embodiment is used for the helmet shell, and the polyurethane material is used as the bonding material. The bonding layer formed by it has certain viscosity, toughness and energy absorption. During the puncture process, it can produce dislocation movement, thereby improving the tank armor protection type capability. This embodiment only describes the case where the number of layers is three, and the same applies when the number of layers is more.

The helmet of Example 3 was subjected to the penetration energy test (29.4 J) of Class II helmets in GJB1564A and the puncture resistance test in T/JSEBA. The results were similar to those of Example 1, and the helmet was not penetrated, meeting the technical requirements.

The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical contents disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims (11)

1. A tank armor protective layer is characterized in that,

Comprises n tank armor protective layers, wherein n is a positive integer between 1 and 50;

when n is 1, the tank armor protective layer is covered by the bonding unloading energy-absorbing protective layer;

Each tank armor protective layer is mutually bonded by bonding and unloading the energy-absorbing protective layer.

2. The tank armor protective armor layer of claim 1,

The tank armor protective layer is made of at least one material selected from fiber reinforced resin, PC material, ABS material, PP material, aramid fiber, ultra-high molecular weight PE, nylon fiber, carbon fiber and glass fiber;

The fiber reinforced resin comprises fibers and a resin;

The fiber is at least one selected from carbon fiber, glass fiber, aramid fiber, ultra-high molecular weight PE and nylon fiber;

the resin is at least one selected from EPOXY resin, PC resin and phenolic resin;

The materials of two adjacent tank armor protective layers are different.

3. The tank armor protective armor layer of claim 1,

The thickness of the tank armor protective layer is 0.05-3 mm.

4. The tank armor protective armor layer of claim 1,

The thickness of the tank armor protective layer is 0.2-2 mm.

5. The tank armor protective armor layer of claim 1,

The bonding force-unloading energy-absorbing protective layer comprises a bonding material, a toughness reinforcing material and an energy-absorbing material.

6. The tank armor protective armor layer of claim 5,

In the bonding force-unloading energy-absorbing protective layer, the mass content of the toughness reinforcing material and the energy-absorbing material is not more than 85%.

7. The tank armor protective armor layer of claim 6,

The mass content of the toughness reinforcing material is 20-75%;

The mass content of the energy absorbing material is 30-85%.

8. The tank armor protective armor layer of claim 5,

The bonding material is at least one selected from polyurethane, polypropylene and PA, PES, TPU, EVA, PO, EAA;

The average molecular weight of the binding material is 5000-3500000.

9. The tank armor protective armor layer of claim 5,

The average molecular weight of the binding material is 30000-150000.

10. The tank armor protective armor layer of claim 5,

The toughness reinforcing material and the energy absorbing material are selected from dispersed particles and/or net-shaped materials;

The dispersed particles are selected from organic, inorganic or metallic hollow beads or foam.

11. The tank armor protective armor layer of claim 10,

The dispersion particles are at least one of hollow microbeads of thermosetting resin, hollow glass beads, hollow titanium beads, titanium micro-foam and aluminum micro-foam;

the net-shaped material is at least one selected from ultra-high molecular weight PE, aramid fiber and nylon fiber.