ОПТИМИЗАЦИЯ КОНСТРУКТИВНЫХ И РЕЖИМНЫХ ПАРАМЕТРОВ ТУРБИННОЙ МЕШАЛКИ ДЛЯ ДИСПЕРГИРОВАНИЯ РАСТВОРОВ ПОЛИМЕРНЫХ КОМПОЗИТОВ

Abstract

The use of polymer composites in the restoration of worn-out body parts of agricultural machinery significantly increases their post-repair life and leads to significant savings in material resources during repair. The composite should have high mechanical and thermophysical properties, which is possible provided that the filler particles are evenly distributed in the volume of the solution. Aggregation of particles, their non-uniform distribution in the polymer solution significantly impairs the performance of the material. Mechanical mixing and dispersion of polymer composite solutions using agitators is a promising treatment method that improves the consumer properties of the material. Theoretical studies were carried out and, taking into account the physical properties of the elastomeric nanocomposite solution, the design of the open turbine stirrer was chosen. It has been found that when developing a device with a stirrer, the effect of the design parameters of the stirrer on the power consumed by the device on the mixing of components, as well as the quality of mixing and dispersion of the polymer composite solution should be taken into account. The effect of the design parameters of the stirrer on the power consumption was analyzed and the design parameters of the stirrer were determined. An active experiment according to the plan was implemented V2 in which the response function took the estimated parameter of the mixing quality of the light transmission coefficient, and the factors of the inclination angle of the stirrer blade and its rotation frequency. A regression model in the form of a second-order polynomial was obtained and its optimization was carried out. The optimal design and operating parameters of the stirrer have been established, which ensure the highest quality of mixing solutions. Based on the results of the studies, the design of an open, turbine stirrer for mixing nanocomposite solutions was developed.