| Issue |
E3S Web of Conf.
Volume 401, 2023
V International Scientific Conference “Construction Mechanics, Hydraulics and Water Resources Engineering” (CONMECHYDRO - 2023)
|
|
|---|---|---|
| Article Number | 05095 | |
| Number of page(s) | 12 | |
| Section | Engineering Materials Science, Intelligent Transport Systems and Transport Logistics | |
| DOI | https://doi.org/10.1051/e3sconf/202340105095 | |
| Published online | 11 July 2023 | |
Thermodynamic compatibility and structural characteristics of interpenetrating polymer vibration damping systems for engineering purposes
1 Tashkent State Technical University named after Islam Karimov, Tashkent, Uzbekistan
2 Tashkent State Technical University named after Islam Karimov Kokand Branch, Kokand, Uzbekistan
* Corresponding author: fan_va_taraqqiyot@mail.ru
This article is devoted to the study of thermodynamic compatibility and structural characteristics of interpenetrating polymer systems (IPS) based on thermosetting and thermoplastic polymers for the production of vibration-damping and sound-absorbing composite polymer materials for machine-building purposes. IPS based on epoxy polymer and polyurethane is calculated according to the well-known Flory-Scott theory at a temperature of 373 K to obtain thermodynamic compatibility of the components of the mixture. Studies have established that between the macromolecules of homopolymers that make up the system, a donor-acceptor mechanism of covalent bonding occurs due to an unshared electron of the nitrogen atom and a cross-linked structure of interpenetrating polymer systems is formed, due to the thermodynamic compatibility of the components. The studies determined that at a temperature of 330 K, the coefficient of mechanical losses has a maximum corresponding to the relaxation process associated with the segmental mobility of the chain and the dynamic modulus of elasticity of the composition monotonically decreases with increasing temperature. The maximum vibration-absorbing properties based on epoxy and polyurethane polymers can be obtained at their ratio of 65:35.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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