A research on technological and physicochemical laws of manufacturing vibration-absorbing products based on epoxy-urethane polymer compositions
DOI:
https://doi.org/10.15587/1729-4061.2015.43324Keywords:
casting compositions, exothermic reactions, composition viability, curing rateAbstract
The paper presents a research on the technology of manufacturing epoxy-urethane compositions for casting products and components in the systems of vibration protection. At the initial stage of epoxy-urethane composition curing, specific heat release, temperature of the mixture and, consequently, viability and curing rate proved to be largely dependent on the nature of the curing agent and the reactive oligomer as well as on the use of a filler. The experiment has shown that technological characteristics of epoxy-urethane compositions, i.e. viability, specific heat release, temperature of the reaction mixture and curing rate, correlate among themselves and can be used as criteria for regulating and managing the casting process. It is proved that at an increased composition weight that is required for manufacturing big-size products, the curing process takes place at higher temperatures, while the variation of temperature characteristics of the mixture during curing remains unchanged.
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Copyright (c) 2015 Юлія Михайлівна Данченко, Анна Васильевна Скрипинец, Алексей Васильевич Кабусь
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