Abstract:

Currently, it is difficult to specify a field of natural sciences where pulsed NMR is not used to one degree or another. This paper presents the features of the application of the NMR method for the study of petroleum dispersed systems. The pulsed NMR method is increasingly being used in rapid analyses of oils and residual fractions. Researchers have conducted many experiments in the field of NMR spectroscopy, some of the results of which are presented in this article. 6 polymer-tar binder samples were studied by pulsed low-frequency NMR relaxation by mixing with polymers in a ratio of 1:1. Styrene butadiene thermoplastic elastomer of the DST-40 brand was used as a polymer material. A comparative analysis of the results of the study of pure and modified tar with a polymer concentration, % by weight: 2, 4, 6, 8 and 10. NMR measurements were carried out on a Spin Track NMR analyzer with a 1H resonance frequency of 30 MHz. The time dependence of the magnetization was recorded by the method of free induction decay of the signal using a pulse sequence consisting of a single 90-degree pulse.

Keywords: oil residues., polymers, tar, free induction decay, pulsed NMR-spectroscopy, heavy oils