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Composite material for bulletproof helmet and preparation method thereof

A technology for composite materials and bulletproof helmets, applied in chemical instruments and methods, synthetic resin layered products, lamination devices, etc., can solve problems such as complex manufacturing methods of bulletproof helmets, achieve good industrialization prospects, good bulletproof performance, and comfort good performance effect

Inactive Publication Date: 2014-02-26
浙江帅孚安全科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the inner and outer surfaces of the bulletproof helmet are covered with reinforcement materials, the reinforcement material needs to be molded separately, resulting in a relatively complicated manufacturing method for the bulletproof helmet

Method used

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  • Composite material for bulletproof helmet and preparation method thereof
  • Composite material for bulletproof helmet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]Add an appropriate amount of acetone to the PU prepolymer, stir evenly, and make a glue solution for use;

[0031] Fix the aramid fiber on the creel, and one end of the drawn fiber is fixed on the winding roller of the winding machine after passing through the tensioner and the spreader, and the winding machine is started for winding, and the glue is applied according to the design requirements. After reaching the specified width, Cut the prepared prepreg along the winding roller generatrix, and dry it in a ventilated place;

[0032] Cut the prepreg according to the specified specifications, perform orthogonal layup according to the method of 0° / 90° / 0°, and perform hot pressing on a pressure molding machine to obtain aramid non-weft fabric;

[0033] 20 layers of aramid non-weft fabrics are cut into aramid non-weft fabric layers according to the shape and size of the required helmet, wherein the cloth surface density in the aramid non-weft fabric layers is 150g / cm 2 ;

...

Embodiment 2

[0037] Add an appropriate amount of acetone to the PU prepolymer, stir evenly, and make a glue solution for use;

[0038] Fix the aramid fiber on the creel, and one end of the drawn fiber is fixed on the winding roller of the winding machine after passing through the tensioner and the spreader, and the winding machine is started for winding, and the glue is applied according to the design requirements. After reaching the specified width, Cut the prepared prepreg along the winding roller generatrix, and dry it in a ventilated place;

[0039] Cut the prepreg according to the specified specifications, perform orthogonal layup according to the method of 0° / 90° / 0°, and perform hot pressing on a pressure molding machine to obtain aramid non-weft fabric;

[0040] 18 layers of aramid non-weft fabrics are cut into aramid non-weft fabric layers according to the shape and size of the required helmet, wherein the cloth surface density in the aramid non-weft fabric layers is 140g / cm 2 ; ...

Embodiment 3

[0044] Add an appropriate amount of acetone to the PU prepolymer, stir evenly, and make a glue solution for use;

[0045] Fix the aramid fiber on the creel, and one end of the drawn fiber is fixed on the winding roller of the winding machine after passing through the tensioner and the spreader, and the winding machine is started for winding, and the glue is applied according to the design requirements. After reaching the specified width, Cut the prepared prepreg along the winding roller generatrix, and dry it in a ventilated place;

[0046] Cut the prepreg according to the specified specifications, perform orthogonal layup according to the method of 0° / 90° / 0°, and perform hot pressing on a pressure molding machine to obtain aramid non-weft fabric;

[0047] 22 layers of aramid non-weft fabrics are cut into aramid non-weft fabric layers according to the shape and size of the required helmet, wherein the cloth surface density in the aramid non-weft fabric layers is 170g / cm 2 ; ...

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Abstract

The invention relates to a composite material for a bulletproof helmet and a preparation method thereof and belongs to the technical field of articles for body protection. The composite material is prepared by alternatively stacking an aramid weftless cloth layer and a resin layer and carrying out mold pressing; the composite material comprises the following materials in percentage by weight: 70-90% of aramid weftless cloth layer and 10-30% of resin layer. The disclosed preparation method of the composite material comprises the following steps: cutting the aramid weftless cloth according to the shape and size of the needed helmet; alternatively stacking the aramid weftless cloth layer and the resin layer, putting the obtained product into a common hot-pressing preforming mold and carrying out thermosetting mold pressing so as to soften the resin layer for alternative bonding with the aramid weftless cloth layer, thereby preparing a composite material blank for the bulletproof helmet; taking out the blank from the hot-pressing preforming mold, and then putting the blank into a cold-pressing preforming mold for cold-setting mold pressing, thereby obtaining the composite material for the bulletproof helmet. The bulletproof helmet prepared by the composite material is good in bulletproof performance and light in weight.

Description

technical field [0001] The invention relates to a composite material used for bulletproof helmets and a preparation method thereof, belonging to the technical field of human body protective articles. Background technique [0002] Bulletproof helmet is an important personal protective equipment. Initially, bulletproof helmets were mostly made of high-quality alloy steel, but due to the inherent defects of the helmet’s heavy weight, high thermal conductivity, strong electrical conductivity, and secondary damage caused by rebound, its application was limited, and due to the steel’s own resistance Shooting ability is directly proportional to thickness, so the only way to improve gunshot resistance is to increase the thickness of the bulletproof helmet, and the improvement of thickness will inevitably increase the weight of the bulletproof helmet, which is not practical. Instead of steel helmets, fiber-reinforced composite materials with good protection performance, light weight...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B37/06B32B37/10
Inventor 胡海平
Owner 浙江帅孚安全科技有限公司
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