PERFORMANCE PROPERTIES OF ELASTOMER COMPOSITIONS MODIFIED BY GAMMA QUANTUM S

UDC 678.09

 

Bobrova Valeriya Vladimirovna – PhD (Engineering), Researcher, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: lerik_bobrik94@mail.ru

Kasperovich Andrey Viktorovich – PhD (Engineering), Associated Professor, Head of the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: andkasp@mail.ru

Tochilin Evgeniy Vladimirovich – electronics engineer of the 1st category. Scientific and Practical Center of the National Academy of Sciences of Belarus for Materials Science (19, Petrusya Brovki str., 220072, Minsk, Republic of Belarus).

 

DOI: https://doi.org/10.52065/2520-2669-2024-283-4.

 

Key words: elastomeric compositions, γ-quanta, protector, abrasion resistance, crack propagation resistance.

For citation: Bobrova V. V., Kasperovich A. V., Tochilin E. V. Performance properties of elastomer compositions modified by gamma quantums. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2024, no. 2 (283), pp. 29–35 (In Russian). DOI: 10.52065/2520-2669-2024-283-4.

Abstract

The development of new materials based on high-molecular compounds, as well as the search for ways to modify traditional materials, is one of the priority areas of science and technology, as it ensures technical progress in various industries. The need for alternative technologies for modifying polymers is associated with the multi-stage nature of traditional processes, high energy and labor costs, and the environmental stress of production. Research by domestic and foreign scientists on the use of electrophysical methods for processing materials and products has shown the high efficiency of using the energy of ultrahigh- frequency electromagnetic oscillations and ionizing radiation for this purpose. Volumetric processing of polymer materials and products can significantly speed up the modification process compared to other processing methods, while the quality of finished products increases, thermomechanical effects and the dimensions of the production plant are reduced, and the economic indicators of the process are improved. The main goal of this work was to establish the influence of doses of γ-quanta on the performance properties of industrial elastomeric compositions with varying degrees of vulcanization (t80 and t90), intended for the manufacture of tread of summer passenger tires. The objects of the study were elastomeric compositions based on a combination of synthetic isoprene, butadiene and styrenebutadiene rubbers for general purposes. Determining the indicator of abrasion resistance when sliding rubber showed that modification with γ-quanta in all studied dosages helps to increase this indicator to 34.5% at degree of vulcanization t80 and to 29.8% at t90. A study of heat generation in elastomeric compositions revealed that the effect of ionizing radiation on elastomeric compositions with varying degrees of cross-linking actually does not affect the temperature change in the bulk of the material under cyclic loading (the change is up to 3°C). A study of rubbers for resistance to crack propagation during bending showed that the highest results are observed for rubbers with a crosslinking degree of t80, modified in a gamma installation with a 60Co source with a dose rate of 30 kGy.

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01.04.2024