Özet:

The aim of the work. Studying the rheological properties of natural zeolite (clinoptilolite) paste with silica dioxide as a thickener, to select their optimal concentrations. Materials and Methods. The objects of the study were model compositions of pastes containing natural zeolite powder (clinoptilolite) in the concentrations of 15 %, 20 %, 25 % and 30 % as the active ingredient, and silica dioxide as a thickener in the concentrations of 5.0 %, 6.0 %, 7.0 % and 8.0 %. Determination of the rheological parameters was carried out at a temperature of 20 ± 2 °C using a MYR VR3000 (Spain) viscometer based on the Brookfield method, studies were carried out in the shear range from 1 s-1 to 200 s-1 using coaxial cylinders. Results and Discussion. It is determined that the samples under investigation are related to thixotropic-structured pseudoplastic systems with a coagulation-type structure. Natural zeolite (clinoptilolite) along with silica dioxide has a structuring effect on the dispersed system, and their optimal concentrations, providing sufficient structure formation, are 25–30 % and 7–8 % respectively.Conclusion. The rheological properties of natural zeolite paste (clinoptilolite) with silica dioxide, as a thickening agent, have been studied, and their optimal structure-forming concentrations have been chosen. The results obtained will be used to develop the composition of paste-enterosorbents with natural zeolite.

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