Manufacturing method of composite impact-resistant soft armor

Abstract

The invention belongs to manufacturing of chemical mechanical equipment. The known anti-impact equipment of transportation tools, such as bumpers, tires, safety belts, sofas and the like, has limited protection functions and is difficult to cope with high-speed collision, falling and wartime strike. Known non-Newtonian fluid has certain internal buffering performance, but the non-Newtonian fluid can be broken even if the impact force is too large; the waterproof coating polyurea and high polymer materials such as fabrics or films made of aramid fibers, carbon fibers and high polymer polyethylene fibers have good surface buffering performance. The solution of the invention is as follows: a flexible material with surface buffering property, a flexible material with internal buffering property and the like are properly and physically combined to prepare a composite soft armor with an anti-impact function, and the composite soft armor is mounted or directly manufactured on an object needing to resist impact. The invention has the beneficial effects that novel buffer equipment is provided for safety in daily life and wartime, and the device is simple to manufacture, low in price, simple and feasible.

Description

Technical Field

[0001] The invention belongs to the field of chemical machinery equipment manufacturing. Background Art

[0002] The known anti-impact equipment of transportation vehicles, such as bumpers, tires, seat belts, sofas, etc., have limited protective functions and are difficult to cope with high-speed collisions, falls and wartime strikes.

[0003] It is known that non-Newtonian fluids have certain internal cushioning properties, but they will also break if the impact force is too great; while waterproof coatings such as polyurea and polymer materials such as aramid, carbon fiber, and polymer polyethylene fiber fabrics or films have better surface cushioning properties. Summary of the invention

[0004] The solution of the present invention is to physically combine a flexible material with external cushioning properties and a flexible material with internal cushioning properties appropriately to produce a composite soft armor with impact resistance function, which is installed on an object that needs to resist impact.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a layer of high-strength chemical fiber fabric and a layer of stretch-resistant plastic film interlayer filled with non-Newtonian fluid material are combined in order, and a flexible material with surface cushioning properties such as polyurea coating is used as an adhesive in between to form a single-layer composite soft armor; single-layer composite soft armor is stacked, and polyurea coating is still used as an adhesive in between to form a multi-layer composite soft armor; according to needs, a layer of high-strength chemical fiber fabric or other fabric can be bonded to the outside of the filling layer located at the bottom of the single-layer or multi-layer soft armor with polyurea coating, and then the composite soft armor is made into a suitable shape and bonded or installed on the protected object. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a cross-sectional diagram of single-layer and multi-layer composite soft armor and an illustration of each layer; Figure 2 is a side cross-sectional view and a front plan view of a non-Newtonian fluid material sandwich; Figure 3 It is a schematic diagram of different forms of composite soft armor (shell shape, blanket shape, boot shape). Figure 1 , Figure 2 , Figure 3 Among them, 1 is a side view and cross-sectional view of a single-layer composite soft armor, 1-1 is a schematic diagram of a polyurea coating, 1-2 is a schematic diagram of a high-strength chemical fiber fabric layer, 1-3 is a schematic diagram of a non-Newtonian fluid material interlayer, 2 is a side view and cross-sectional view of a multi-layer composite soft armor, 3 is a side view and cross-sectional view of a filling layer with grooves, 4 is a front view of a filling layer, 5 is a front view of a semi-elliptical shell made of composite soft armor, 6 is a side view and cross-sectional view of a semi-elliptical shell, 7 is a schematic diagram of a single soldier blanket, and 8 is a schematic diagram of a cushioning boot (single).

[0007] Specific implementation scheme one: a fabric of high-strength chemical fiber such as aramid, carbon fiber, high-density polyethylene fiber or its mixed fiber (hereinafter referred to as fabric layer) is cut and sewn into an appropriate shape according to the shape of the object to be protected; then a stretch-resistant plastic film is cut into a desired shape, and a discrete groove with a rectangular or other geometric shape with a gap is thermoformed, and a non-Newtonian fluid material such as water starch (a thickener and a preservative may be added, the same below), polyborodimethylsiloxane or other high molecular non-Newtonian fluid material is filled in the discrete groove, and the groove is sealed with the same stretch-resistant plastic film to form a filling interlayer 3 (hereinafter referred to as the filling layer); then a polyurea coating is applied on both sides of the fabric layer, one side is made into an impact-resistant layer facing outward, and the other side is tightly bonded to the filling layer 3. If necessary, a fabric layer or other fabric such as velvet, cotton fabric, etc. can be bonded to the other side of the filling layer 3 with a polyurea coating, that is, a single-layer composite soft armor 1 is made; then the single-layer composite soft armor 1 is bonded into a multi-layer composite soft armor 2 with a polyurea coating as needed. Finally, the composite soft armor is fixed to the surface or inner surface of the shell of the object to be protected by bonding or hanging, such as the inner surface of the metal shell of the vehicle, the outer surface of the vehicle fuel tank, the inner surface of the wing fuel tank, the inner and outer surface of the aircraft (including flying cars), the inner and outer surfaces of the aircraft, the inner and outer surfaces of the abdomen and the bottom (or the above-mentioned soft armor is directly made on the inner and outer surfaces of the object to be protected to make it one body). This method is suitable for vehicles, ships, aircraft, including helicopters and other transportation tools, airdrop material packaging boxes, etc., and can also be installed at the bottom of elevators to prevent accidental slipping. It can also be used to make bulletproof clothing armor, bulletproof helmet lining, gun stock cushioning pads, vehicle front seat backs including seat back handle pads, vehicle and aircraft seat cushions, etc.

[0008] Specific implementation scheme II: As described in scheme I, the fabric layer is cut and sewn into a semi-elliptical shell 5, a polyurea coating is applied on the surface of the semi-elliptical shell as an impact-resistant layer, and a filling layer is bonded with a polyurea coating inside to form a single-layer composite soft armor. If necessary, a multi-layer composite soft armor can be made and the bottom is thickened to form a center of gravity, and a suspension layer such as 6 made of high-strength fiber fabric is arranged inside it, and then a frame is reinforced on the edge of the semi-elliptical shell composite soft armor, and some ropes are fixed on the frame. The other ends of the ropes are respectively fixed on the edge of a small parachute or on other umbrella handles, and the semi-elliptical shell is used to replace a large parachute, a life-saving air cushion, etc., and can be used for airborne troops, high-rise life-saving, etc. The use of this method to make aircraft seats can reduce the damage caused by a crash to a certain extent.

[0009] Specific implementation scheme three: As described in scheme one, the fabric layer is cut and sewn into a rectangle of appropriate size, with buckles, ropes, etc. reserved at the four corners, and slits or holes reserved in the middle and upper part. One side is sprayed with polyurea coating, and the other side is bonded with a filling layer. Metal powder that can isolate infrared heat radiation or a reflective layer is added to the coating. A layer of velvet or cotton fabric can also be bonded. A belt or rope made of the same fabric layer is passed through the slits or holes. It can be made into a cloak when tightened and a blanket when unfolded. Figure 3The 7 in the figure is referred to as the individual soldier blanket, which can protect individual soldiers from attacks by small drones. It can also be hung on the top and around tanks and combat vehicles to protect against attacks by small drones and rockets.

[0010] Specific implementation scheme 4: As described in the first implementation scheme, the fabric layer is cut and sewn into a boot shape such as Figure 3 8. A polyurea coating is applied on the surface to make an impact-resistant layer, and a filling layer is bonded with a polyurea coating on the inside to make a multi-layer composite soft armor. The armor can be appropriately thicker. When the armor is put on and dropped from a high altitude, the armor will naturally face downward to reduce the impact of landing, and a small parachute can be used for life-saving.

[0011] The beneficial effects of the present invention are: providing new anti-impact buffer equipment for daily transportation and wartime needs.

[0012] The invention is non-toxic and harmless in manufacture and use, is simple and feasible, and does not require special processes and high costs.

Claims

1. A method for making a composite impact-resistant soft armor and the soft armor made by the method, characterized in that: The flexible material with external cushioning property is appropriately physically combined with the flexible material with internal cushioning property to make a single-layer or multi-layer composite soft armor with impact resistance function. For example, high-strength fiber fabrics such as polyurea coating, aramid, carbon fiber, high-molecular polyethylene or their mixed fabrics are appropriately knitted, sandwiched, bonded, cut, sewn and other physical combinations with water starch (thickeners and preservatives may be added, the same below), polyboron dimethylsiloxane or other high-molecular non-Newtonian fluid materials to make a single-layer or multi-layer composite soft armor with impact resistance function.

2. A composite impact-resistant soft armor directly manufactured and installed on a semi-finished product or finished product of a protected object according to the method of claim 1, characterized in that: The materials and manufacturing process used are the same as those described in claim 1, except that the soft armor is integrated with the protected object (such as composite impact-resistant soft armor directly made on the inner and outer surfaces of various vehicle and ship fuselage boxes and special equipment shells).

3. A cushioning device of various shapes made by reprocessing the composite impact-resistant soft armor made according to the method of claim 1, characterized in that: This equipment simply processes the above-mentioned composite impact-resistant soft armor into various shapes, adheres or fixes it to the inner and outer surfaces of the protected object, or constitutes a part of the protected object (such as bumpers, elevator bases, fuel tanks, bulletproof clothing, seat cushions, chair backs, etc.).

4. A semi-elliptical shell soft armor made of the composite impact-resistant soft armor according to claim 1, characterized in that: The shell is made of the same material and manufacturing process as the composite impact-resistant soft armor described above, and is in the shape of a semi-elliptical shell with a reinforcement frame at the edge, on which ropes can be fixed to connect a small parachute or other umbrellas.

5. A soldier blanket made of the composite impact-resistant soft armor according to claim 1, characterized in that: The material and manufacturing process of the blanket are the same as those of the above-mentioned composite impact-resistant soft armor. It is flat in shape, can isolate infrared heat radiation, has holes or gaps for threading ropes and belts, and has buckles or nylon straps at the four corners or edges for connection and fixation.

6. A cushioning boot made of the composite impact-resistant soft armor according to claim 1, characterized in that: The material and manufacturing process of the boots are the same as those of the above-mentioned composite impact-resistant soft armor, and the shape of the boots is boot-shaped.

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