A Method for Evaluating Dispersibility of Insoluble Sulfur and Its Application
A method for evaluating the dispersibility of insoluble sulfur and its application were introduced.The specific formula compound containing insoluble sulfur to be evaluated were homogeneously mixed by a specific mixing process,the compound cross-section was observed with an electronic camera,the size and number of insoluble sulfur particles were counted,and the dispersibility of insoluble sulfur was evaluated according to the evaluation grade table of its dispersion.Four kinds of insoluble sulfur were applied to the actual production formula of the belt compound.The dispersion of insoluble sulfur was evaluated by testing the tensile strength of the vulcanizate.The results showed that the dispersibility of insoluble sulfur in the actual production formula was consistent with the dispersibility of insoluble sulfur evaluated by this evaluation method.