Simulation On Dispersion Of Carbon Black In Internal Mixer Based On EDEM And The Experimental Study

With the rapid development of rubber industry and polymer material industry, as a mixing machine with excellent performance and iconic role, the use of the mixer has become more and more widely. The rotor is the key part of the mixer. Its configuration seriously affects the performance of mixer and has an important impact on the quality of mixer to mix. Thanks to carbon black can provide rubber with reinforcement and filling effect, carbon black has more extensive application in rubber. The dispersion of carbon black in rubber can reveal the quality of mixing rubber and the performance of other product. With the mixing technology improved and in-depth study of the mixing theory, dispersion of carbon black in the rubber is attracting more and more attention.Based on the discrete element, by using the particle simulation software EDEM, the paper builds the mixed model of rubber and carbon black. It simulates the dispersion of carbon black under different condition. The different condition consists of different mixer rotor speed, the clearance between two rotors and rotor configuration. In order to verify the feasibility of the simulation results, this paper using NBR as an example has been investigated under different experimental conditions. The experiments consist of the diction of the mixing and vulcanization of rubber Mooney viscosity experiments and dispersion of carbon black, rubber and other physical and mechanical properties. Through this research, research methods of dispersion of the initial formation of the use of discrete element method and visco elastic theory to the analysis of mixer-carbon black, provides reference to the further research and design of mixer rotor.