China: From Raw Materials Development To Production Of A Dragon
In addition to industrial applications, high-performance fibers are also used to make bulletproof armor for military use. Textile bulletproof technology in the United States, Holland, Britain and China is being extended with the continuous improvement of fiber properties.
Body armor is a garment that absorbs and dissipates warheads, fragments of kinetic energy, prevents penetration, and effectively protects the body's protective parts. As a special purpose protective clothing, bullet proof clothing can open up fragments formed when the projectile is broken, and remove kinetic energy from bullet fragments through bulletproof materials.
In order to meet the maximum absorption of bulletproof vest
Bullet
And other projectile kinetic energy requirements, bullet proof materials must have high strength, good toughness and strong energy absorption capability, mainly based on high strength and high modulus high-performance fibers.
The properties of fiber materials for impact resistance depend on the fracture energy of fibers and the speed of stress wave propagation.
The stress wave is required to diffuse as quickly as possible, while the fracture energy of the fiber under high speed impact should be increased as much as possible.
On the premise of wearability, the bulletproof vest should be light and comfortable without any impact on bullet proof capability. After wearing, it can still perform various movements flexibly. Clothing has the ability to adjust the micro climate environment of the clothing human body system, avoid the moisture accumulation inside the body surface of the bulletproof vest, and cause humility and humility to the human body, and reduce the consumption of physical energy.
At present, in the foreign bulletproof vest market, the United States, Holland, the United Kingdom,
Russia
Germany,
Japan
And other products are the most popular and the best quality.
The products of bulletproof products are mainly high-performance organic synthetic fibers, such as DuPont, Kevlar, Dinima (Dyneema) fiber of Holland, DSM, and Spectra ultra high molecular weight polyethylene (UHMWPE) fiber of American AlliedSignal company (now Honeywell).
China is another country that can produce bulletproof vest from raw materials to one-stop production after Holland and the United States.
The Iraqi government ordered 20 thousand Chinese bulletproof vests to be used for equipping the police force and importing military garments from China in large quantities.
According to reports, 12 British soldiers stationed in Iraq were attacked by anti US armed forces in Iraq and rushed out of the encirclement at a small cost of one person's death.
The body armor of the British soldier who escaped from death was beaten like a honeycomb by a dense bullets, but no bullet proof clothing was penetrated. The soldier who died was hit by an unprotected brain by a stray bullet.
At that time, the bullet proof clothing worn by British soldiers came from China.
The weight of the bulletproof vest of China is 2 to 5 kilograms. The bullet proof specifications include the pistol and the assault rifle. The strongest bullet proof clothing can block the 7 meter distance of the machine gun, and the machine gun kill of this distance can penetrate the steel plate of two centimeters thick.
With the progress of biotechnology, tough materials like silk and spider silk can be produced in large quantities by means of pgene or synthesis.
The development of nanotechnology will also make the development of flexible and firm bulletproof materials possible.
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