PROPERTIES OF ELASTOMER COMPOUNDS WITH NEW ROSIN SUBSTITUTES AND NANOSIZED MODIFIERS

UDC 678.046

 

Uss Elena Petrovna – PhD (Engineering), Associate Professor, Assistant Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: uss@belstu.by

Prokopchuk Nikolay Romanovich – Corresponding Member of the National Academy of Sciences of Belarus, DSc (Chemistry), Professor, Professor, the Department of Polymer Сomposite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: nrprok@gmail.com

Shashok Zhanna Stanislavovna – DSc (Engineering), Associate Professor, Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: shashok@belstu.by

Krotova Olga Aleksandrovna – PhD (Engineering), Assistant Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: o.krotova@belstu.by

Klyuev Andrey Yur’yevich – DSc (Engineering), Professor, Professor, the Department of Woodworking Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: andrey_kluev_bstu@mail.ru

 

DOI: https://doi.org/10.52065/2520-2669-2023-271-2-1.

 

Key words: tree-ring width, European beech, Douglas fir, climate, state.

 

For citation: Yermokhin M. V., Ignatiev Ya. K., Starikova L. I. Impact of climatic factors on treering dynamics of European beech and Douglas fir. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2023, no. 1 (264), pp. 5–13.

 DOI:. 10.52065/2520-2669-2023-271-2-1.

Abstract

The possibility of combined use of new wood chemical products based on rosin-terpene-styrenemaleic adducts in the 10presence of nanosized modifiers in tire elastomer compositions based on a combination of synthetic polyisoprene and polybutadiene rubbers has been studied. The influence of the type and dosage of adducts and nanomodifiers on adhesive and elastic-strength properties of the elastomer compositions has been established. Rosin-terpene-styrene-maleic adducts, obtained by high-temperature treatment of a mixture of turpentine and styrene with maleic anhydride, were introduced into rubber compounds in equivalent dosages with an industrial tackifier, pine rosin. As nanosized modifiers we used prototypes of a modified diamond-containing charge with different content of nanoparticles in dosages of 0.1 and 0.2 phr. It was found that the use of a diamond-containing charge leads to an improvement in the confection tackiness of elastomer compositions with rosin-containing additives, which will increase the time interval for the storage of rubber compounds and ensure solidity when assembling multilayer products. A certain decrease in the strength characteristics of rubbers with rosin-containing additives in the presence of nanomodifiers was determined while maintaining the elastic properties at the level of the compared sample

 

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References

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03.03.2023