Study On Mixing Mechanism And Experiment Of Nano Filler In New Six-wing Synchronous Rotor With Internal Mixer

With the development of rubber industry, rubber processing machinery has made a big progress. Higher demand for rubber processing machinery were put forward with new material and process appearance. Mixer is one of the most important machinery for rubber compound mixing and it has been studied, developed and improved all the time. Nano filler and rubber mixing with mixer is the most important task at present. Shearing mixer is one of the most advanced mixer and rotors are the core of it. Therefore, the most important research on synchronous rotors is developing the new type of rotors.Research on a amount of literatures about mixing mechanism, the theories of mixer rotors designing and the influences of geometrical configuration on nano filler mixing effects have been analyzed. A new designing method of synchronous rotors is developed and A new type of six-wing rotors and six-wing VCMT synchronous rotors are invented. After usual modeling methods of rotors have been generally analyzed, swept modeling, a new method is brought forward by the author with the introduction of 3-D CAD. The model of finite element analysis and structural analysis of strength check have been built.Particularly, the article focuses on the nano filler mixing mechanism and courses of new six-wing synchronous and VCMT synchronous rotors. And it also analyses the comparison experimental of nanocalcium carbonate and nano silica by using four-wing, six-wing, and VCMT synchronous rotors. Through these experiments, many useful datas have been got.The theoretical analyses and experiment results show that:1. For nano filler which is difficult to disperse, the new six-wing rotors and six-wing VCMT rotors have good dispersion, especially the VCMT rotors . Both of them are suitable for the nano filler mixing. 2. In the same process conditions, compared with six-wing and four-wing synchronous rotor mixer, the new six-wing rotor mixer has less power consumption, higher dispersion of nano filler and low Mooney Viscosity. The new six-wing rotors are on the basis of six-wing rotors, can increase filled coefficient, lower the force of ram thrust and reduce the cost of mixing.3. The six-wing VCMT rotors can improve the dispersion of nano filler and the mechanical properties of the compound. Compared with the four-wing and six-wing rotors, the new six-wing VCMT rotors can reduce mixing time efficiently and greatly improve the productivity. So, the new six-wing VCMT synchronous rotors have the potential advantages in replacing the general synchronous rotors.The results have showed that the new rotors have made the flow of compound in the mixing chamber complicated and have the better mixing capabilities of dispersion and distribution. Mixing effects and the productivity are greatly improved.