Composite polymer materials based on polyolefins and concentrated residue from tar hydrocracking

The main features of the component composition of the concentrated residue from tar hydrocracking (CRTH) obtained at the TAIF-NK JSC oil refinery have been identified. The main components of CRTH are asphaltenes and resins with a total content of more than 60% by weight, which allows this residual petroleum product to be considered as a filler for the production of composite polymer materials, along with other well-known carbon materials. A comparative analysis of CRTH asphaltenes and resins using IR spectroscopy, MALDI mass spectrometry, elemental analysis, TGA, electron paramagnetic resonance, and atomic absorption spectroscopy showed their main differences from petroleum asphaltenes and resins extracted from tar. It was found that the asphaltenes and resins of CRTH differ significantly in almost all parameters compared to similar components of tar, while the asphaltenes of CRTH in this case have similar characteristics to the resins of tar. The introduction of CRTH into polyethylene and polypropylene leads to an increase in their MFI values, while changing not only rheological but also strength (decrease in strength), deformation (decrease in residual elongation) and temperature (increase in degradation temperature) properties of the resulting polymer compositions.

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