The Nebraska-Lincoln University engineering team has recently developed a new type of nanofiber that is both tough and strong, which adds momentum to the development of the new materials industry. Carbon fiber with extremely light weight and high hardness is a research hotspot in the field of new materials. In the face of the western blockade, China’s carbon fiber technology has also achieved breakthroughs and has broad development prospects; investors are advised to pay attention to the listing of new nanofibers and carbon fibers in A shares. Companies such as Shenzhen Huicheng [0.74% Capital Research Report], Fangda Carbon, Sinosteel Jixi [-1.76% Capital Research Report], etc.
New materials industry will add momentum
According to reports, the engineering team at the University of Nebraska-Lincoln has just developed a new type of nanofiber that has both tough and strong properties.
The strength of a material depends on the load it can carry; toughness, on the other hand, depends on how much force is required to destroy the material. Previously, people believed that these two attributes could not be shared, but the team at Nebraska-Lincoln proved that the theory was wrong. They found that if the nanofibers are made thinner than ever before, then the material will not only be stronger but will also have better toughness.
The team used a technique called "electrospinning" (a high-voltage synthetic acrylic polymer) to develop a small polyacrilonitrile nanofiber and finally ejected liquid through a small nozzle. . In this way, the length of the nanofiber becomes "sustainable".
Team leader Dzenis said that this new nanofiber could be transformed and used in any composite product, such as Body Armor, aircraft, bridges and bicycles can benefit from this new material. "If the structural material becomes more rigid, the product can be made lighter and thinner while ensuring safety."
Western blockade
China's carbon fiber breaks first
Being lighter and harder is the direction that people have been relentlessly pursuing. To meet this demand, the development and application of carbon fiber has become a hot topic in the field of new materials in the world. Carbon fiber not only has the inherent characteristics of carbon materials, but also has the soft processability of textile fibers. It is a new generation of reinforcing fibers.
The research on producing carbon fiber from polyacrylonitrile as a raw material in China started in 1962. It is not too late to start, but it has not made substantial progress for a long time. As carbon fiber plays an important role in aerospace and other defense industries, western countries treat it as military supplies and “embargo†on China, not to transfer production technology.
Last September, Ningbo Institute of Materials Science and Technology, Chinese Academy of Sciences developed a carbon-fiber car. This car has abandoned the traditional steel structure and is made of a large number of elastic fiber materials, which can reduce the weight of cars by 60% compared with ordinary steel. With the same oil, the car can drive 50 kilometers more per hour. At the same time, the car shell is very sturdy. After hitting the car cover, it will quickly rebound and the surface will not be damaged. Despite the Western technology blockade, China’s carbon fiber has succeeded in breaking through.
Industry insiders expect that China's carbon fiber materials will be highly developed in the next decade. Carbon fiber has excellent mechanical properties and chemical stability, and is the fiber with the highest specific strength and the highest specific modulus among the high-performance fibers that have been mass-produced. In addition, carbon fiber also has many other excellent properties such as low density, high temperature resistance, corrosion resistance, friction resistance, fatigue resistance, high vibration attenuation, high electrical and thermal conductivity, low thermal expansion coefficient, and high X-ray penetration , Non-magnetic but electromagnetic shielding, etc., and more as a reinforcing material added to the resin, metal, ceramics, concrete and other materials, constitute a composite material. These characteristics have predicted the broad application prospects of carbon fiber.
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