Abstract
The article presents the analysis of the existing methods of producing epoxidized polydiene rubbers in order to obtain new derivative materials with improved physical and mechanical properties. The study proves the use of natural rubber as a raw material for the production of epoxidized polydiene. It has been experimentally demonstrated that conducting epoxidation as a combined-separation process allows producing epoxidized rubber in one reaction volume. It has been also found that the use of a water-xylene environment for the process has a qualitative effect on the degree of epoxidation and significantly reduces power consumption.
Highlights
The problem of rust prevention of production equipment remains still relevant, especially in the coal industry, which uses a significant amount of ferrous metals for the supports of mining work, pipelines, reinforcement of shafts, surface structures, as well as for the production of mining equipment
After complete consumption of epoxidizing agent (EA) - hydrogen peroxide, the resulting reaction mass was cooled to room temperature, washed with distilled water, and precipitated epoxy natural rubber (ENR) with ethanol
Given that the heat consumed to heat the reaction mass depends on the time of the heating and the heat flow from the heater, to introduce energy savings, it is necessary to reduce the values of these indicators while maintaining the level of degree of epoxidation (DE) and conversion of epoxidizing agent (CEA)
Summary
The problem of rust prevention of production equipment remains still relevant, especially in the coal industry, which uses a significant amount of ferrous metals for the supports of mining work, pipelines, reinforcement of shafts, surface structures, as well as for the production of mining equipment. The most promising protective coatings are epoxidized polymer films, which have high protective properties (oil resistance, resistance to corrosive media, gas-tightness), are easy to apply, and low-cost; they can be restored during operation and disposed of. These characteristics make epoxidized polymers suitable to protect mining equipment from corrosion during its operation or temporary preservation, as well as to produce rubber elements of mining machines, which can significantly increase their efficiency and service life (sometimes 10-100 times or more) [2].
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