Polyethylene Composite Ballistic Helmet
A polyethylene and helmet technology, applied in the field of protective equipment, can solve the problems of small kinetic energy of bullets, the PE layer cannot be given to the ceramic matrix, and the PE layer is bent and stretched, and achieves the effects of simple manufacturing method, light weight and convenient assembly.
Active Publication Date: 2019-04-26
BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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Problems solved by technology
The PE layer in the bulletproof helmet is a simple polymer material. When shot by a bullet, the kinetic energy of the bullet absorbed by the outer PE layer is very small, basically negligible, and the inner PE layer cannot give the ceramic matrix the energy Sufficient support, when the warhead fragments and ceramic fragments hit the inner PE layer together, the inner PE layer is prone to bending and tensile fracture
Method used
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Embodiment
[0048] This embodiment manufactures as figure 1 Shown polyethylene composite ballistic helmet, concrete steps are as follows:
[0049] the two layers by 21 layers made of UHMWPE fibers Brand high-performance polyethylene non-weaving cloth is cut according to the shape and size of the required helmet, and the cross is stacked neatly. After stacking, put it into a hot-press preforming mold, raise the temperature to 90° C., press 10 MPa, hold the heat for 10 minutes to soften the thermoplastic polymer resin in the polyethylene non-woven fabric. Then take it out from the hot-press preforming mold, put it into the cold-press preforming mold quickly, press 5Pa, keep for 10 minutes, obtain inner layer 1, such as figure 2 shown.
[0050] Tensile strength at warp and weft is 1600N / 25mm, density is 150g / m 2 Plain weave high-strength fiberglass fabric. Cut the three-layer high-strength fiberglass fabric according to the shape and size of the required helmet, and then impregnate ...
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Abstract
The invention relates to a polyethylene composite bulletproof helmet. The polyethylene composite bulletproof helmet comprises an inner layer, a middle transition layer arranged on the inner layer, an outer layer arranged on the middle transition layer and a surface layer arranged on the outer layer, wherein the inner layer is made of polyethylene non-woven cloth, the middle transition layer is made of high-strength glass fiber fabric having been dipped into thermosetting polymer resin, the outer layer is made of bulletproof ceramic wafers, and the surface layer is made of a high-molecular polymer. Rifle bullets will not penetrate through the polyethylene composite bulletproof helmet, and the polyethylene composite bulletproof helmet has the advantages of being light in weight, not influencing the combat effect and the like and can be used by law enforcement officers and combat soldiers.
Description
technical field [0001] The invention relates to a safety protection device for a human head, belonging to the field of protective equipment, in particular to a polyethylene composite bulletproof helmet for preventing rifle bullets and high-speed and large-diameter fragments. Background technique [0002] Bulletproof helmet is a kind of personal protective equipment used to protect the head from injury. It is the necessary personal protective equipment for military, police and other security personnel to face the threat of bullets and other environments when performing tasks. It has always been valued by the military of various countries. . It can absorb and dissipate the kinetic energy of the warhead, prevent penetration and effectively protect the head. [0003] Modern bulletproof helmets have experienced the development process from bulletproof metal materials to fiber-reinforced composite materials. Although bulletproof helmets made of traditional bulletproof metal mate...
Claims
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IPC IPC(8): F41H1/08B32B17/04B32B17/10B32B27/02
Inventor 孙其永
Owner BEIJING TONGYIZHONG NEW MATERIAL TECH CORP