RubCon Mixture Agitation Process

The lowest power expense and maximum homogeneity of the mix can be attained by optimum agitation of the rubber binder, fillers, and reinforcing fibers with the Brabender plastograph mixer. Such mixers allow estimation of the technological properties of rubber compositions based on viscous resistance, which in turn depends on duration of mechanical effects and temperatures. 

The cumulative analysis of experimental data allows estimation of the quality of prepared compositions and various mixing duration and intensity. The experimental data on modeling dependences make it possible to optimize the specified 

The superficial phenomena of physical-chemical interaction of the liquid and solid phases and formation of the composite material microstructures proceed most intensively during rubber binder preparation. Therefore, the conditions under which the binder is prepared exert essential influence on the properties of composites. Uniformity of the prepared binder is defined by the intensity of the agitation process and depends on the process s speed and duration. 

The object of research was a mix of low-molecular oligodiene, curing groups, and fly ash ablation with a specific surface of approximately 300 m2/kg. Preparation of the binder was carried out in the laboratory rotary mixer. Times of agitation were 60, 180, and 300 s, at speeds of 8.3,16.6, and 25 rps, respectively. 

RubCon samples measuring 4 x 4 x 16 cm were molded from the resulting mixtures. After curing, the samples were weighed and tested for compression and tension at bend. 

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