Used for making bulletproof clothing and other products. Cave Lal fiber Yes. DuPont Co A new material developed in the 70s of last century, which impregnated with a super concentrated liquid made of polyethylene glycol and silicon particles, was impregnated with nano technology, and the strength and hardness were greatly improved, about 5 times that of steel.

Now, it is said that the fiber is stronger, harder and more wearable than that of the Kai Fu La Er. New generation super fiber The interdisciplinary team led by Horacio Espinoza of Northwestern University of the United States has been successfully developed. Besides being used for making bulletproof clothing, it can also be used to make parachutes and spare parts for automobiles, aircraft and military satellites, and has great potential in medical, sports and fire protection fields. This research is published in the Journal of the American Chemical Society recently.

The carbon nanotubes used in the manufacture of this new type of fiber are carbon isomorphs. They are one of the most important materials on the individual side, but if they are bundled together, they will lose this characteristic, because there will be slipping between carbon nanotubes.

With the help of electron microscopy, researchers have tested and examined various new fibers from nanometer to macro level, and realized that subtle interactions have great influence on the properties of materials.

For example, because of the different interactions, some materials have high strength and hardness, but not enough ductility; others are opposite. How to combine the advantages of various materials and make them become new materials with high strength and hardness, and good ductility, has become the focus and difficulty of the research.

A major breakthrough made by the research team is to add a polymer to the carbon nanotubes. Under the action of polymers, a new fiber that can absorb and eliminate the impact of large energy will not be broken at last. It is considered to be the best material in the specific industrial field at present.

If the interaction between carbon nanotube bundles can be further improved, the strength of the fibers will be even greater, the researchers said.