November 30, 2021

Beyond Going Long

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Slovak scientists will save lives and give soldiers unprecedented resilience. They revolutionized bulletproof vests

You will know the bulletproof vests. Not only from action films, it is worn every day by police officers, soldiers and SBS members, who not only have to face anti-clowns in Slovak shops, but really deal with a huge amount of money, which they transport in armored cars.

It is made of high strength materials. Not only its durability is important, but also its weight, so that a person feels comfortable in it and his movement is not too restricted.

Revolution from Slovakia?

A team of scientists from the Slovak Academy of Sciences has developed a new lightweight nanocomposite ceramic material that achieves greater impact resistance while maintaining the same thickness. After successful tests at an authorized testing laboratory, the researchers created a prototype of the protective jacket, but the new material can also be used in the production of the above-mentioned armored vehicles, or even in construction.

Most safety features, such as jackets or helmets, are currently made of multiple layers of Kevlar (PC gamers won’t be surprised)Or Twaron, Spectra or Dyneema, which prevent bullets from entering the body.

However, targets can suffer the shock of forces from the same effect, for example on the chest. This ends with strong fingerprints, broken ribs or even damage to vital organs, although the bullet itself does not penetrate.

Therefore, scientists from the Institute of Materials Research of the Slovak Academy of Sciences in Kosice were looking for the optimal composition of nanocomposites that would more effectively dampen the effects of projectiles and at the same time would not increase their weight.

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managed to

“We have designed various nanoceramic materials and researched their properties. We were able to significantly increase the hardness of ceramics only with the help of graphene nanosheets. In addition, we observed the mechanisms by which graphene stopped crack propagation and forced it to change direction not only in two dimensions but also in three dimensions. “. Research team leader Victor Bocho of the Institute for Materials Research of the Slovak Academy of Sciences explains and adds that even mixing a very small amount of two-dimensional materials, including graphene, can dramatically change the properties of ceramics.

Ceramic in windbreakers is nothing new. Compared with traditional metal materials, it has high rigidity and ballistic weight efficiency. It is used for ballistic protection from high kinetic energy projectiles and fragments. However, Košice’s scientific team is trying to improve it as much as possible.

“We have mastered laboratory production. We can prepare ceramics with better properties than traditional materials available on the Slovak market. Keeping the same thickness, we can increase its durability, so a soldier does not have to carry such a weight. In the army, when you have to go a long distance, Every gram matters. Completed by the world of materials.