RATIONALE FOR CHOOSING A SOLVENT FOR THE PRODUC-TION OF ASBESTOS-CONTAINING PRODUCTS BASED ON BUTADIENE-NITRILE RUBBER

doi: 10.25712/ASTU.2072-8921.2021.01.016

Abstract

The paper considers the technical and technological aspects of the choice of the solvent used for the production of asbestos-containing products. Among the factors, limiting the choice of solvents, it is necessary to note the dissolving capacity, boiling point, solubility in water, chemical resistance, as well as cost. The properties of organic solvents and substances included in their composition have been studied. To study the possibility of using a solvent in the manufacture of products based on nitrile butadiene rubber, full-scale tests were carried out on its dissolution in various solvents. The results of experimental studies showed that the best solvents of the presented rubber sample are aromatic hydrocarbons – benzene, toluene, ethylbenzene, p-xylene, isopropyl benzene. At the same time, only benzene fully meets all the requirements for solvents, in which dissolution occurs faster than in the reference solvent, which was taken as ethyl acetate.