This work aims to investigate the
thermo-oxidative aging and damping
performances of hindered phenol filled nitrile butadiene rubber (NBR)
organic hybrids by monitoring the changes in the static/dynamic mechanical
properties and chemical structure under the influence of temperature.
Compared with the unmodified NBR composite, hindered phenol presents
remarkable effects on enhancing the thermo-oxidative stability and
damping capacity of NBR materials. By combining experiment and molecular
simulation results, the incorporation of polar hindered phenol improves
the oxygen barrier ability of NBR composites, and its addition enhances
the intermolecular interaction of these hybrids. Hindered phenol has
a priority to terminate peroxy radicals due to its low chemical reaction
energy. Moreover, we introduce thermodynamic analysis of hydrogen
bond dissociation reaction (HBDR). The high enthalpy and low reaction
equilibrium constant of HBDR result in excellent damping performance.
This study is expected to help us understand the relationship between
microstructures and properties for an organic-molecule-filled polymer
system and to provide new insights into the development of high thermo-oxidative
resistance and damping materials.
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