阅读说明：本技术 一种基于非牛顿流体的防弹片及其制备方法 (Bulletproof sheet based on non-Newtonian fluid and preparation method thereof ) 是由 秦浩博 于 2020-09-30 设计创作，主要内容包括：本发明涉及一种基于非牛顿流体的防弹片及其制备方法。该基于非牛顿流体的防弹片包括非牛顿流体胶囊、蜂窝状结构、层间板、固定栓；所述非牛顿流体胶囊内填充有非牛顿流体；所述非牛顿流体胶囊置于所述蜂窝状结构的蜂窝内；所述蜂窝状结构有至少一层,每一层所述蜂窝状结构置于两层所述层间板之间；所述蜂窝状结构和所述层间板通过所述固定栓固定连接。本发明能够提高防弹衣的性能、降低防弹衣的重量,能够满足对各种大口径子弹的防弹需求,减小子弹对人体的冲击力,经尺寸放大后也可用于军用坦克、飞机、车辆等需要防弹的部位使用。(The invention relates to a bulletproof sheet based on non-Newtonian fluid and a preparation method thereof. The non-Newtonian fluid based ballistic resistant sheet comprises non-Newtonian fluid capsules, a honeycomb structure, interlayer plates and fixing bolts; the non-Newtonian fluid capsule is filled with non-Newtonian fluid; the non-Newtonian fluid capsule is arranged in the honeycomb of the honeycomb structure; the honeycomb structure has at least one layer, and each layer of the honeycomb structure is arranged between two layers of the interlayer plates; the honeycomb structure and the interlayer plate are fixedly connected through the fixing bolt. The invention can improve the performance of the bulletproof clothes, reduce the weight of the bulletproof clothes, meet the bulletproof requirements of various large-caliber bullets, reduce the impact force of the bullets on human bodies, and can be used for parts needing bulletproof, such as military tanks, airplanes, vehicles and the like after size amplification.)

1. A non-Newtonian fluid-based bulletproof piece is characterized by comprising a non-Newtonian fluid capsule, a honeycomb structure, an interlayer plate and a fixing bolt; the non-Newtonian fluid capsule is filled with non-Newtonian fluid; the non-Newtonian fluid capsule is arranged in the honeycomb of the honeycomb structure; the honeycomb structure has at least one layer, and each layer of the honeycomb structure is arranged between two layers of the interlayer plates; the honeycomb structure and the interlayer plate are fixedly connected through the fixing bolt.

2. The non-Newtonian fluid-based ballistic resistant sheet according to claim 1 comprising a plurality of layers of the honeycomb structure and a plurality of layers of the interlayer sheet, the layers being fixedly connected by the cross-connecting anchor pins.

3. The non-Newtonian fluid-based ballistic resistant sheet according to claim 1, wherein the non-Newtonian fluid is one of: starch solution, egg white, apple pulp, and concentrated solution or suspension of high molecular polymer.

4. The non-Newtonian fluid-based ballistic resistant sheet according to claim 1, wherein the envelope of the non-Newtonian fluid capsule is a flexible encapsulating material comprising a plastic; the thickness of the non-Newtonian fluid capsule is less than 5mm, and the diameter of the non-Newtonian fluid capsule is 5-50 mm.

5. The non-Newtonian fluid-based ballistic resistant sheet according to claim 1, wherein the material of the cellular structure is a lightweight metal, plastic, or carbon fiber sheet; the thickness of the honeycomb structure is less than 5mm, and the wall thickness is less than 2 mm.

6. The non-Newtonian fluid-based ballistic resistant sheet of claim 1, wherein the securing peg is made of a lightweight metal or resin; the length of gim peg is less than 8mm, and the diameter is 3 ~ 8 mm.

7. The non-Newtonian fluid-based ballistic resistant sheet of claim 1, wherein the interlayer sheet is made of a lightweight metal or a rigid ceramic sheet.

8. A non-newtonian fluid-based ballistic resistant sheet according to claim 1 wherein the average thickness of the interlayer sheet is less than 3mm and the upper and lower surfaces thereof are distributed with trapezoidal or conical raised structures.

9. A method of making a non-newtonian fluid-based ballistic resistant sheet of claim 1, comprising the steps of:

pouring non-Newtonian fluid into the capsule and sealing to form a non-Newtonian fluid capsule;

preparing a honeycomb structure;

placing the interlayer plate on the bottommost layer, aligning the honeycomb structure and the interlayer plate with each other, placing the non-Newtonian fluid capsule in the honeycomb of the honeycomb structure, covering a layer of interlayer plate on the honeycomb structure, and repeating the steps in sequence to prepare the composite material with the multilayer structure;

fixing the two or three layers by using fixing bolts in the process of preparing the composite material with the multilayer structure, and realizing tight connection between all layers by crossing each other.

10. The method according to claim 9, wherein the cellular structure is prepared by laser cutting using a plexiglass plate or by wire cutting using duralumin; the interlayer plate is prepared by machining a hard aluminum or carbon fiber plate.

Technical Field

The invention belongs to the application field of protective equipment for military use, police personnel, military tanks, airplanes, vehicles and the like, and particularly relates to a bulletproof sheet based on non-Newtonian fluid and a preparation method thereof.

Background

The body armor is a garment which can absorb and dissipate the kinetic energy of bullets and explosive fragments, prevent the bullets and the explosive fragments from penetrating and effectively protect human bodies. Early body armor was made primarily of metal, and later developed to be made of aluminum alloys in combination with high strength nylon materials. In recent years, with the progress of technology and the emergence of new materials, modern body armor has better performance. Mainly comprises three types of hard bodies, soft bodies and complex bodies, such as soft body armor prepared by high-performance fibers; hard body bulletproof clothes made of super strong aluminum alloy, aluminum oxide, silicon carbide and other hard metals and non-metals; and the composite bulletproof garment is formed by compounding the two materials.

non-Newtonian fluids are materials which are studied to be hotter in recent years, and refer to fluids which do not satisfy the Newton's Law of viscosity experiments, that is, fluids in which the shear stress and the shear strain rate are not in a linear relationship. It has a special property that when you pound hard on the surface of a non-newtonian fluid solution, he will become hard, i.e. it has the characteristic of being strong when it is strong. This feature is well suited for use in making body armor. When a bullet hits the surface of the body armor at a fast speed, it becomes very strong, due to the properties of the non-newtonian fluid, directly resisting the speed of the bullet and absorbing its energy.

Disclosure of Invention

The invention provides a bulletproof sheet based on non-Newtonian fluid and a preparation method thereof, aiming at improving the performance of bulletproof clothes, reducing the weight of the bulletproof clothes, meeting the bulletproof requirement of various large-caliber bullets and reducing the impact force of the bullets on human bodies.

The technical scheme adopted by the invention is as follows:

a bulletproof sheet based on non-Newtonian fluid comprises non-Newtonian fluid capsules, a honeycomb structure, interlayer plates and fixing bolts; the non-Newtonian fluid capsule is filled with non-Newtonian fluid; the non-Newtonian fluid capsule is arranged in the honeycomb of the honeycomb structure; the honeycomb structure has at least one layer, and each layer of the honeycomb structure is arranged between two layers of the interlayer plates; the honeycomb structure and the interlayer plate are fixedly connected through the fixing bolt.

Furthermore, the honeycomb structure is made of materials such as light metal or plastic; the fixing bolt is made of light metal or resin and plays a role in fixing the interlayer plate.

Furthermore, the anti-shrapnel is composed of a plurality of layers of honeycomb structures containing non-Newtonian fluid capsules and interlayer plates, and fixed connection between the layers is completed through cross-connected fixing bolts.

Further, the thickness of each layer of the bulletproof sheet is less than 5 mm; the bulletproof sheet can be manufactured into a required shape by cutting and the like.

Further, the non-Newtonian fluid may be a starch solution, egg white, apple pulp, concentrated solutions and suspensions of high molecular polymers, and the like.

Furthermore, the thickness of the non-Newtonian fluid capsule (the thickness of the whole capsule) is less than 5mm, and the diameter of the non-Newtonian fluid capsule can be selected within the range of 5-50 mm.

Further, the envelope of the non-newtonian fluid capsule may be a flexible packaging material such as plastic.

Further, the honeycomb structure, having a thickness of less than 5mm and a wall thickness of typically less than 2mm, has a certain strength.

Furthermore, the interlayer plate is made of light metal, hard ceramic plates and the like.

Furthermore, the average thickness of the interlayer plate is less than 3mm, and trapezoidal or conical protruding structures are distributed on the upper surface and the lower surface of the interlayer plate. The function of these raised structures is: the impact force applied to one non-Newtonian fluid capsule is dispersed to a plurality of non-Newtonian fluid capsules on the next layer, and then the vibration energy is dispersed.

Furthermore, the length of the fixing bolt is less than 8mm, and the diameter of the fixing bolt can be selected within the range of 3-8 mm. Or replace the non-Newtonian fluid capsules in some honeycombs (the non-Newtonian fluid capsules are not arranged at the positions with the fixed bolts) to play a role in fixing and supporting.

A preparation method of the non-Newtonian fluid-based ballistic resistant sheet comprises the following steps:

pouring non-Newtonian fluid into the capsule and sealing to form a non-Newtonian fluid capsule;

preparing a honeycomb structure;

placing the interlayer plate at the bottommost layer, aligning the honeycomb structure and the interlayer plate with each other, placing the non-Newtonian fluid capsule in the honeycomb of the honeycomb structure, covering the honeycomb structure with a layer of interlayer plate, and repeating the steps to prepare the composite material with a multilayer structure;

fixing the two or three layers by using fixing bolts in the process of preparing the composite material with the multilayer structure, and realizing tight connection between all layers by crossing each other.

Further, the organic glass plate is prepared into a honeycomb structure in a laser cutting mode, or duralumin is prepared into the honeycomb structure in a wire cutting mode; the interlayer plate is prepared by machining a hard aluminum or carbon fiber plate.

The invention adopts light metal or plastic or carbon fiber plate to make honeycomb structure, each honeycomb is loaded with capsule element composed of non-Newtonian fluid, so as to form one layer of the anti-shrapnel, each layer is connected by the hard metal or ceramic plate with trapezoid or cone shape, the trapezoid or cone shape part is deep into the honeycomb, so as to realize the purpose of transmitting impact force to the non-Newtonian fluid capsule. Through the distribution arrangement of the trapezoid or conical structures on the hard plate, the impact force applied to one non-Newtonian fluid capsule can be dispersed to a plurality of non-Newtonian fluid capsules on the next layer, and further the vibration energy can be dispersed. During this transfer of impact energy, the shock wave velocity will rapidly decrease below the threshold for stiffening of the non-Newtonian fluid. Thereafter, the impact energy will oscillate inside the newtonian fluid capsule, and the oscillations between the layers will cancel each other out, thereby achieving the ballistic effect.

The bulletproof piece disclosed by the invention can be used for parts needing bulletproof, such as military tanks, airplanes and vehicles after being subjected to size amplification.

Drawings

Figure 1 is a schematic diagram of a non-newtonian fluid based ballistic resistant sheet construction.

Fig. 2 is a schematic diagram of the structure of a cell of a non-newtonian fluid based ballistic resistant sheet.

FIG. 3 is a schematic view of a honeycomb structure containing non-Newtonian fluid capsules.

Fig. 4 is a schematic diagram of an interlayer plate structure.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is further described below by taking the starch solution as an example, through specific examples and accompanying drawings.

This example is a ballistic resistant sheet structure based on a non-newtonian fluid in starch liquid. The bulletproof sheet based on starch liquid non-Newtonian fluid in the embodiment is shown in figure 1 and comprises non-Newtonian fluid capsules, a honeycomb structure, interlayer plates and fixing bolts. The non-Newtonian fluid capsule is filled with non-Newtonian fluid, and the non-Newtonian fluid capsule is arranged in the honeycomb of the honeycomb structure. The honeycomb structure has multiple layers, each layer of honeycomb structure is arranged between two layers of interlayer plates, and the honeycomb structure and the interlayer plates are fixedly connected through fixing bolts. Fig. 2 is a schematic diagram of the structure of a cell of a non-newtonian fluid based ballistic resistant sheet. FIG. 3 is a schematic view of a honeycomb structure containing non-Newtonian fluid capsules.

The non-Newtonian fluid is prepared from starch and water according to a weight ratio of 44: 72, and mixing uniformly. It was then poured into a capsule 10mm in diameter and 3mm in thickness and sealed. The organic glass plate with the thickness of 4mm is prepared into a honeycomb structure by a laser cutting mode, and duralumin can be selected and prepared by a wire cutting mode. The interlayer sheet shown in FIG. 4 was prepared by machining from duralumin having an overall thickness of 2mm and a height of raised portions of about 0.5mm, each raised structure corresponding to one hexagon in FIG. 3. Placing the interlayer plate on the bottommost layer, aligning the honeycomb structure with the interlayer plate, respectively placing the filled capsules in the honeycomb, covering the honeycomb with the interlayer plate, and repeating the steps in sequence to prepare the five-layer-structure composite material. In the process, the fixing bolts can be randomly distributed on the anti-elastic sheet to fix two to three layers, and the layers are mutually crossed to realize the tight connection. The fixing bolt can be in a rivet mode, and can also be in a threaded mode, a welding mode or an adhesion mode to play a fixing role. The thickness of the prepared bulletproof piece is about 30 mm.

When a bullet hits a non-Newtonian fluid capsule in the first layer, its velocity is much higher than the threshold for the non-Newtonian fluid to harden, so that the non-Newtonian fluid capsule will rebound the bullet and transfer the energy to the underlying interlayer sheet. Due to the fact that the upper and lower bulges of the interlayer plates are arranged in a staggered mode, impact energy can be dispersed to more than 3 non-Newtonian fluid capsules on the lower layer, energy dispersion is achieved, and the like, and when the layer five is reached, the energy on each non-Newtonian fluid capsule is not more than 1/20 at most. Considering the vibration absorbing effect of the interlayer plate as a hard material and the transmission loss of the shock wave between the hard material and the fluid material, the energy consumption can be more than 99 percent completely.

It should be noted that specific parameters in this embodiment, such as the ratio of starch to water, the size values of each part, etc., are merely examples, and are preferred parameters. Other parameter values may be used in other embodiments.

In other embodiments, the non-newtonian fluid may be egg white, apple pulp, concentrated solutions and suspensions of high molecular polymers, and the like.

The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person skilled in the art can modify the technical solution of the present invention or substitute the same without departing from the spirit and scope of the present invention, and the scope of the present invention should be determined by the claims.