Studies on application of radioisotope methods for estimation of the degree of sulfur dispersion in a rubber mixture
Two radiometric methods have been applied lor estimation of the degree of sulfur dispersion in a rubber mixture at various stages of the production of tyre tread, and have statistically been compared. These are: (1) the liquid scintillator method, and (2) the surface activity flow-counter method, where the activity of 35S isotope added to oiled sulfur (at weight ratio about 1:150) and introduced to а rubber mixture in the initial stage of the process is measured. Both methods can be applied for evaluation of various parameters influencing the degree of sulfur dispersion in a rubber mixture, however the surface activity method is simpler and less time-consuming, and it gives better precision than the liguid scintillator method.
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