NEW STRUCTURAL COMPOSITE MATERIALS FOR HIGH LATITUDES FROM BAUMAN MOSCOW STATE TECHNICAL UNIVERSITY (PARTICIPANT OF REC "RUSSIAN ARCTIC")

The development of new structural composite materials for high–latitude construction is one of the tasks of the large technological project "Multifunctional Arctic Complex: connectivity of territories, security and monitoring in the Arctic" of the scientific and educational center "Russian Arctic". A group of scientists of the Bauman Moscow State Technical University, headed by Vyacheslav Seleznev, head of the Department of Special Projects of the Intersectoral Engineering Center "Composites of Russia" and Head of the laboratory of the NTI Center "Materials for Extreme Conditions", is successfully engaged in this direction.

Vyacheslav Alexandrovich, during the implementation of the activities of the scientific and educational center "Russian Arctic: New Materials, Technologies and Research methods", your group analyzed the available mineral resources of the Arctic and, among others, identified siliceous rocks, primarily diatomites and trepel, as well as zeolites. What is interesting, for example, the trepel?

Trepel is a loose or earthy mass of light tones, rich in amorphous silica, which has a relatively high fire resistance — up to 1150 — 1600 ° C, as well as a relatively high porosity of 60-64%, low average

density, high filtration capacity, increased adsorption, high porosity, catalytic ability, sound and thermal insulation ability,

chemical resistance and abrasiveness. These properties allow the use of trepel as insulating, filtering, building materials, as well as absorbers, catalysts, fillers and adsorbents.

What can be said about man-made waste and the specifics of Arctic pollution with this waste?

Difficult climatic conditions, an undeveloped transport network, and many other factors complicate the timely disposal of waste and lead to their accumulation in the Arctic region and, as a result, to a negative impact on the Arctic ecosystem. Unlike other, warmer areas of the planet, the nature of the Arctic is not able to recycle the waste available here.

The Bauman Moscow State Technical University has developed technologies for the recycling of thermoplastic composite materials, as well as technologies for the use of fly ash – the product of the operation of thermal power plants and boiler houses — as raw materials for building materials.

What structural composite materials from Arctic raw materials and man-made waste are being developed by scientists of the Bauman Moscow State Technical University during the events of the REC "Russian Arctic"?

As part of the work on the efficient use of the resources of the Arctic region for the REC "Russian Arctic", our university is developing the following materials and technologies: ceramic heating elements (more than 400 oS) based on natural clays (diatomites and trepeles), which can be used for heating residential and household premises, technological equipment of complex shape; non-woven adsorption materials allowing to promptly eliminate the consequences of man-made accidents, for example, during oil bottling.

We are also engaged in the recycling of thermoplastic polymer materials into volumetrically reinforced composites. The fact is that the reduction in the molecular weight of secondary polymers makes it possible to process them by methods characteristic of reactoplastics and create composites reinforced with continuous glass fibers on their basis. In addition, we are developing thermal insulation and facing ceramic composite materials, there are already technologies for producing white facing bricks from trepel raw materials.

The use of foamed clay as thermal insulation materials, as well as materials for the substrate and drainage of roads significantly reduces the cost of infrastructure facilities. We are also engaged in the creation of polymer composite materials for matrices of self-regulating heating cables. We have developed composites based on polyolefins for low-temperature self-regulating cables and for de-icing systems and composites based on heat-resistant thermoplastics (copolymers of polytetrafluoroethylene, polyamide, etc.) for the oil refining industry and the needs of industrial production. We

We are working on the creation of electrically conductive composite materials on polymer and ceramic bases using Arctic resources. Ceramic bricks and stones act as such materials. Bricks are a practical, reliable, durable type of building material with excellent thermal insulation properties, and stones are large—sized blocks with micropores and special voids inside, their use can significantly reduce the construction time of a house while maintaining excellent performance characteristics.

What other works are planned as part of the implementation of the activities of the REC "Russian Arctic"?

This is the development of technologies, design systems, monitoring and management of the thermal state of industrial and civil facilities in the Arctic.

Thank you, Vyacheslav Alexandrovich. We wish you and your team fruitful work and great success, including in the projects of the REC "Russian Arctic".

source: https://xn--m1acy.xn--p1ai/en/news/novie-konstrukcionnie-ko-pozicionnie-ateriali-dlya-visokih-shirot-ot-gtu-i-n-a-bau-ana-uchastnik-noc-rossiiskaya-arktika1658998724