Carbon Fiber "Black Gold" Illuminates The Kingdom Of New Materials.

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Xiaobian of the network introduces the "black gold" carbon fiber: the new material Wang Guo Yao's eye star.

According to media reports, the world has developed a world's smallest UAV, like flies size, the main body made of carbon fiber, weighing only 106 mg.

The aircraft can be used for search and rescue operations, such as entering the narrow space where it is squeezed, and searching for special environmental information.

It is also reported that some recent military and technological powers have locked their eyes in the "carbon fiber industry development" and other related fields. They are competing to launch a plan to speed up the development of renewable carbon fiber materials, and to set up innovative research institutions. They want to focus on promoting the rapid development of the 6 key technical areas, such as engineering nano technology and carbon fiber, and so on.

Scientific exploration of "black gold" carbon fiber

The origin of carbon fiber dates back to 1860. It was invented and patented by British Cerf Swan in making electric filament.

It is a fibrous carbon material. It is black and hard. It is a new material with higher strength than steel, smaller density than aluminum, corrosion resistance than stainless steel, high temperature resistance than heat resistant steel, and electrical conductivity, thermal and mechanical properties, and so on. Because of its difficult manufacturing technology and high practical value, it is known as "black gold" by the industry.

Carbon fiber "outer soft inside rigid", not only has the essential characteristics of carbon materials, but also has the softness and workability of textile fibers, it is a new generation of high performance reinforced fibers.

The carbon fiber, which is several times thinner than the hair, can be obtained through special compound molding technology. The carbon fiber composite material with excellent performance can be widely used in many fields such as aviation, aerospace, energy, pportation, military equipment and so on. It is an important material for national defense industry and civilian production and life.

It's hard to make complex manufacturing processes.

In 1950s, in order to solve the key technical problems such as high temperature and corrosion resistance of missile nozzle and warhead, the United States pioneered the development of viscose based carbon fiber.

In 1959, polyacrylonitrile based carbon fiber was invented by Kondo Akio, Japan.

Because of the outstanding performance of carbon fiber in the military field, it has attracted the attention of the military power.

Subsequently, some countries invested heavily in developing more high-performance and more variety of carbon fibers.

Japan has broken through a series of key technical problems, such as high strength, high modulus and so on, so that the carbon fiber composites developed have excellent fatigue resistance and environmental adaptability.

Carbon fiber appears to be simple, but its manufacturing process is very complex. It is a multi-disciplinary, sophisticated and sophisticated technology system engineering, involving chemical, textile, materials, precision machinery and other multi-disciplinary areas. The whole process includes high precision control over thousands of parameters such as temperature, humidity, concentration, viscosity, flow volume, and so on.

With today's carbon fiber and

Widely used, large-scale production has become a major bottleneck in its industrialization development.

Although the production of each grade is the same, the difficulty of precise control of various process parameters is very different. The production line of ten ton and 100 ton can not be simply copied to 1000 tons. For example, polymerization produces a lot of heat, which makes it difficult to control the uniformity of temperature uniformity.

Because of this, only a handful of countries can produce high-performance carbon fiber at present, and the core technology is mainly in the hands of Japanese and American giants.

Among them, Japan's three companies accounted for 3/4 of the world's carbon fiber production capacity, becoming the industry's "Big Mac".

Strong and strong national defense equipment reborn

According to foreign media reports, one of the most important reasons for the first flight time of F-35 fighters is overweight.

In order to solve this problem, Lockheed Martin has taken many measures, and ultimately the use of up to 35% of carbon fiber composite material to greatly reduce the body weight.

So in a sense, CFRP has made F-35 fighter.

Nowadays, carbon fiber reinforced polymer (CFRP) is not only an indispensable basic material for achieving high stealth performance, but also an important symbol for measuring advanced performance of weapon system.

For example, X-47B, Global Hawk, global observers, westerly wind and other aircraft have higher proportion of carbon fiber composite materials, making their payload, endurance and viability have achieved a new breakthrough.

One of the most important features of active F-22 fighter is the good stealth performance, which is closely related to its use of carbon fiber composites.

In addition, F-117A fighters, B-2 stealth bombers and so on also use carbon fiber absorbing materials, including the Swedish "Weiss ratio" class patrol ships are all composite materials, and therefore have advanced stealth, high mobility, long life and other advanced operational performance.

The development of aerospace is even more important.

If the quality of solid rocket motor is reduced by 1 kilograms, the range can be increased by 16 kilometers.

Therefore, carbon fiber composite materials have been widely used in the "American Patriot" missile, "Trident" II, the German HVM supersonic missile, the French "Ariane" -2 rocket, the Japanese M-5 rocket and other engine shells, and the future carbon fiber is also an important foundation for developing advanced strategic weaponry with miniaturization, high mobility, high precision and high penetration capability.

The new high-performance carbon fiber composite has better stability and reliability. It is widely used in hypersonic vehicles, international space station, advanced satellites and other equipment systems.

The US defense department stressed in the "material research for defense demand in twenty-first Century" report that "by 2020, only composite materials will have the potential to equip 20-25% performance."

Superiority and superiority are related to national security interests.

Foreign army believes that modern information warfare is not only the battle of high-tech equipment, but also the battle of high performance materials.

With the development of modern weapons and equipment, stealth, low energy consumption, high mobility, heavy load and other trends are highlighted, and the performance requirements of carbon fiber and composite materials are getting higher and higher.

Therefore, the development of higher strength, higher modulus carbon fiber and the matching high performance combat system has become the highlight of the competitive strength of military power.

At present, the developed countries are focusing on the three directions of carbon fiber, advanced resin and manufacturing technology.

At present, the tensile strength and modulus of carbon fibers have great potential and room for improvement in theory and laboratory.

In the field of resin research, the development of high toughness thermosetting resins is focused on improving the long-term temperature of weapon components and improving toughness, manufacturability and moisture and heat resistance.

The development of thermoplastic resin can significantly improve the impact toughness and fatigue damage performance of weapons and equipment.

Modern advanced automated manufacturing technology can realize the integration of 3D models and manufacturing of components. It is suitable for manufacturing large and complex structural parts. It can effectively improve the quality and reliability of equipment and reduce costs, thus promoting the better development of national defense industry.

In recent years, in order to meet the needs of China's national defense construction, carbon has been developed.

And its composite materials have been listed as national key support projects.

Experts believe that building a complete and independent high level industrial chain with the aim of the future is the only way to achieve the goal of rejuvenating the country and strengthening the Chinese army.