HC Plastics News: Russian media said that experts at the Moscow State University of Science and Technology have developed friction-resistant polymeric materials that can be used in freezing temperatures of no less than minus 80 degrees Celsius. Large-scale mining of minerals in the Arctic requires complex industrial equipment and heavy equipment with large friction units. In the so-called cold zone of Yakutia, a low temperature of 67 degrees Celsius was recorded.
According to the Russian "News" website reported on July 2, the climatic conditions of the Arctic put forward stringent requirements on the stability of the equipment. In the case of inconvenient transportation, once the mechanical bearing is damaged by the cold, it may mean a major economic loss. For mining organizations, it is important to use movable parts in machines that can withstand long-term environmental challenges.
According to the report, the ultra-high molecular weight polyethylene tape developed by Moscow State University of Science and Technology and Biometrix can be attached to the inside of the metal bearing to act as a friction surface. The new material has the characteristics of long life and low temperature resistance (the trait changes only when the temperature is minus 80 degrees Celsius). High chemical inertness guarantees its environmental friendliness.
The report also states that ultra high molecular weight polyethylene is a type of thermoplastic (which can be softened when heated and hardened again when cooled). This plastic consists of long molecular chains that are capable of efficiently transferring and distributing loads inside the material. Ultra high molecular weight polyethylene is currently used in medical prosthetics and will be used in the future to manufacture bulletproof vests and other areas.
Reports indicate that new plastics can also be used in polar prefabricated panels for polar off-road vehicle bodies and other technical equipment that can withstand impact loads. These prefabricated panels will consist of alternating dense and porous layers. The representative of the Moscow State University of Science and Technology pointed out that it is this structure that gives the prefabricated panels maximum impact strength. This material deforms under physical action, but can then be restored to its original shape.
The report also pointed out that the layered structure of the polymer prefabricated panels was borrowed from the organism by the researchers. For example, a human tubular bone has a dense outer layer (bearing the primary load) and a porous inner layer.
Fyodor Shinatov, a researcher at the Composites Center of the Moscow State University of Science and Technology, said: "Russia has experimented with the production of ultra-high molecular weight polyethylene in Kazan and Tomsk in the past, but it has not been sustained. Because of this polymer Demand must be at least thousands of tons per year in order to be profitable. I believe that this level of demand can be achieved if this material is widely used in the development of the Arctic."
Ivan Bespalov, head of the Russian Iron and Steel Institute, said: “Ultra high molecular weight polyethylene is a material with high wear resistance and low friction coefficient. It may be a good idea to use it as a working material for bearings, but only if it is It is a good solution to the problem of bonding polymers to metals." 
Editor in charge: Zhang Lan
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