OBTAINING AND STUDYING THE PROPERTIES OF MODEL COMPOSITIONS FOR PRECISION CASTING USING DISPROPORTIONED ROSSIN

UDC 676.085.4

 

 

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

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

Danishevskiy Viktor Nikolayevich – PhD (Chemistry), consultant. JSC “Mountain Wax Plant” (2, Partizanskaya str., 222823, Svisloch, Pukhovichi district, Minsk region, Republic of Belarus). E-mail: vic.danishevsky@yandex.by

Skakovskiy Eugene Dominikovich – PhD (Chemistry), Associate Professor. Institute of Physical Organic Chemistry of the National Academy of Sciences of Belarus (13, Surganova str., 220072, Minsk, Republic of Belarus). Е-mail: sed@ifoch.bas-net.by

 

DOI: https://doi.org/ 10.52065/2520-2669-2024-277-3

 

Key words: rosin, model composition for precision casting, chemical modification, disproportionation, terpenoid-maleic adduct.

 

For citation: Klyuev A. Yu., Prokopchuk N. R., Danishevskiy V. N., Skakovskiy Ye. D. Obtaining and studying the properties of model compositions for precision casting using disproportioned rossin. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2024, no. 1 (277), pp. 21–35 (In Russian). DOI: 10.52065/2520-2669-2024-277-3.

 

Abstract

Chemical modification of rosin, the most important component of model compositions (CM) for precision casting, made it possible to create a composition that is superior in a number of properties to the basic CM grades ZGV-107 and ZGV-103. The study of a complex of physical and mechanical characteristics of the new CM revealed the strengths of the rosin modifier as an ingredient of the CM. When developing CM formulations, preference should be given to the rosin component of the formulation, such as disproportionate rosin. The article presents the advantages and disadvantages of the ingredients of model compositions. The chemistry of the process of disproportionation of gum rosin and detailed conditions for the reaction are revealed. An analysis of scientific research on the use of iodine and iodine-containing compounds, as well as their mixtures with other substances as catalysts, was carried out. An experiment to study the thermal stability of rosins is described, NMR spectra of various rosins before and after modification are presented. The results of laboratory experiments carried out in the laboratories of BSTU are presented based on an expanded range of indicators for the developed experimental CM samples. In accordance with them, the optimal variants of compositions using triethanolamine salts of pine and disproportionate gum rosin were selected for extensive industrial testing and subsequent introduction into production at enterprises of the Russian Federation.

 

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15.11.2023