Which one better if PE Fiber VS Aramid Fiber?

  In recent years, a large number of protective equipment for PE fiber materials have appeared in major defense exhibitions, which has a tendency to replace aramid protective equipment. In fact, PE fiber has been widely used in human protective equipment by manufacturers in the United States and Europe for its excellent performance. At present, PE fiber protective equipment made in China has reached the world's advanced level, and PE material protection equipment is widely exported to NATO countries. Then, compared with the previous aramid fiber bulletproof equipment, what are the advantages of PE fiber, and how about the performance of China's protective equipment?

PE takes the place of aramid, which had gradually became the treand.

Non-metallic bulletproof materials that attracted attention earlier were aramid. Kevlar is actually an aramid material. It is the best high-performance organic fiber bulletproof material before the advent of PE fiber. It is widely used in various industries, and it is also widely used in armor and protection.

However, aramid fiber and its products have two fatal points, first one, it will be photodegraded by ultraviolet light; the other, it will be in hydrolysis status,even in dry air. These two characteristics make the aramid's weather resistance poor and short life, which limits the deep use of aramid in the field of protection.

In recent years, PE fiber has gradually become the main material of protective equipment. It is a high-performance organic fiber,successfully developed in the early 1980s and is one of the three high-tech fibers (carbon fiber, aromatic, PE fiber) in the world today. PE fiber has high axial specific tensile strength and stiffness. The specific strength is the highest among all fiber materials. The specific modulus is second .comparing with high modulus carbon fiber (but the carbon fiber is brittle and not suitable for human body bulletproof). The main material) has the highest energy absorption performance among all fibers, excellent low temperature resistance, excellent UV resistance and excellent water resistance. As we all know, white plastic bags do not degrade in the atmosphere for 100 years. This plastic is actually using PE fiber as raw material. It is a bad thing that PE in daily life does not degrade and pollute the environment, but this feature is not desirable in bulletproof products, indicating that it has good patience and long life.

In addition, from the point of view of bulletproof ability, in terms of anti-low speed bomb, the anti-elasticity of PE fiber is higher than that of aramid by about 30%; in terms of anti-high-speed bomb, the performance of PE fiber is 1.5 to 2 times that of aramid. It can be said that the disadvantages of aramid fiber have become the advantage of PE fiber, and the advantage of aramid fiber has become better on PE fiber, so it is an inevitable trend that PE fiber replaces aramid in the field of protection.

Of course, PE fiber also has shortcomings, and its temperature resistance is far less than that of aramid fiber. PE fiber protection products are used within 70 ° C (can meet the requirements of human body and equipment, that is, the temperature resistance of 55 ° C), beyond this temperature, the performance drops quickly, to 150 ° C above the PE fiber will melt, while the aramid The fiber can maintain good protection performance in the environment of 200 ° C. It does not drip or decompose at 500 ° C; it will directly carbonize when it encounters a high temperature above 900 ° C to form a heat insulation layer. These are all not available in PE fiber protection products and become a unique advantage of aramid products.

Nowadays, the application of PE fiber protection products in various countries in the world mainly focuses on personnel protection, such as PE fiber bulletproof vests and bulletproof helmets, which are light in weight and easy for people who wear them to engage in various activities. Now the US military's "interceptor" body armor system is mainly composed of a soft bulletproof vest and a hard bulletproof insert. The material is PE fiber, which is much lighter than the previous Kevlar body armor. The bulletproof effect is better. The helmet used by the US Marine Corps is also made of PE fiber.

PE fiber is also used for armor protection of equipment. Initially applied on aviation equipment. In the late 1990s, the protective armor of military aircraft developed by various countries was basically selected from this material. At present, all countries in the world have adopted PE fiber protective armor in a large number of ships, vehicles, armored vehicles and other equipment. The application of PE fiber armor in equipment solves the contradiction between weight and protection. In the case of fitting limited weight, it better protects the safety of personnel and improves the battlefield survival rate and personnel survival rate of equipment. PE fiber armor is lighter in weight than metal armor. Under the same protection level, it can reduce the weight by more than half. On the other hand, it will not cause the second injury of the bullet, and it can be effectively prevented as the armor of the steel armor. The inner armor of the steel armor caused by the broken armor caused a casualty.

Which is the strongest protective equipment in China and the United States?

China's PE fiber with independent intellectual property rights successfully developed in the 1990s has reached the highest level in the world in terms of quality and performance, and has been hailed by the Chinese as "competitive fiber." Nowadays, in the international high-performance organic fiber market, China, the United States, and the Netherlands are all three-thirds of the world. China's PE fiber is not much different from the original silk manufacturing to processing. It is a gap between the same generation and some performances are higher than Foreign products.

However, for the safety equipment of soldiers and police officers, many people argue which one is strong. In fact, part of the reason for this controversy is that there are many differences in the design ideas and standards of bulletproof vests. For example, China and the United States have different standards for the detection of bullet-proof vests and bullet-proof inserts. (The back convex finger or bullet hits the bullet-proof vest or bullet-proof insert, the distance from the back of the bullet-proof vest. The greater the distance, the description The weaker the anti-ballistic ability). The American standard is that the back convex is no more than 44mm, and the Chinese standard is no more than 25mm. The difference between the two is mainly due to different considerations: after the bullet hits the bulletproof vest, the greater the back convexity on the bulletproof vest, the more serious the blunt injury to the human body. Therefore, the Chinese standard puts high demands on the back. However, the US standard considers from another angle that it is necessary to increase the thickness of the body armor and thus the weight of the body armor, so that the high standard body armor is heavier, but the body armor is too heavy. It does bring the burden on the wearer. Sometimes there is a phenomenon that the bulletproof vest is heavy and uncomfortable, and the military police are unwilling to wear bulletproof vests when performing tasks.

However, in terms of the three most basic individual protective equipments, such as bulletproof vests, bulletproof inserts, and bulletproof helmets, the protection capability of individual/single police equipment produced by Chinese enterprises is higher than that of the corresponding US active products. It is determined by the difference in standards between the two countries. However, if it is completely in accordance with American standards, the performance of Chinese products is not lost to the equipment currently in service in the United States (see table). However, it must be acknowledged that American products are better at mastering the aesthetics and functional balance of the design. Many innovative details are very user-friendly and practical, and worth learning.

Overall, China's overall level of technology in the field of human protection is in the world's top, such as 2.6 kilograms of protective plug-in board, can prevent M2AP bombs, 53 armor-piercing incendiary bombs, more than three rounds of hits, global production There are not many companies, one of which is a Chinese company. However, we must also admit that there is still a gap between China and the world's highest level, especially in the application of new bulletproof materials and innovation in protective products. One of the important reasons is that domestic competition is fierce, which brought about losing money for the companies, and no more money for innovation.

However, the continuous increase in the export volume of domestic bulletproof equipment in recent years illustrates the advanced performance of domestic equipment. The export of protection products include UD fabrics, bullet-proof vests, bullet-proof plates etc., which are the basic materials for protective products. The export areas include the United States, European Union countries, etc., and are also exported to NATO member countries. PE fiber replaces aramid is a trend.

So, PE fiber and Aramid fiber, which one is better? What is your idea? Welcome to disucss with us by leaving messenge Or contact us by militarysupplies@gmail.com/WhatsApp:8613302019738.