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Nature Study of Temperature Phase Transitions in Bitumen Composites with Polymeric Hydrocarbon Plasticizer

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Abstract:

In this paper, in terms of stochastic equations theoretically analyzed the influence of the resonance dynamic intermolecular interaction on the formation of spectral vibrational bands of molecular crystals in the transition region to the rotation (plastic) phase. The mechanism that adequately describes the temperature behavior of Davydov splitting intramolecular vibrations value in the normal parrafins crystal phase was offered. This mechanism is associated with damping of vibrational excitons in their interaction with the lattice orientation defects arising from thermal excitation of the librational and rotational degrees of freedom of the molecules. It is shown that one of the factors that determine the appropriate rheological properties of bitumen is the existence in certain temperature ranges rotational phase of hydrocarbon components.

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Periodical:

Advanced Materials Research (Volume 702)

Pages:

197-201

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.702.197

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Online since:

May 2013

Authors:

V.D. Danchuk, A.P. Kravchuk

Keywords:

Asphalt, Damping of Vibrational Excitons, Davydov Splitting, Resonance Dynamic Intermolecular Interaction, Rheological Properties of Bitumen, Stochastic Equations

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