How The Mixer Works

When the mixer is working, the two rotors rotate relative to each other, and the material from the feeding port is clamped and brought into the roll gap to be squeezed and sheared by the rotor. Along the gap between the front and rear chamber walls and the rotor and back to the top of the nip. During the flow around the rotor, the material is subjected to shearing and friction everywhere, so that the temperature of the rubber material rises sharply, the viscosity decreases, and the wettability of the rubber on the surface of the compounding agent is increased, so that the rubber and the compounding agent surface are fully contacted. The batch of compounding agent passes through the gap between the rotor and the rotor, the rotor and the upper and lower top bolts, and the inner wall of the mixer together with the rubber compound. It is sheared and broken, surrounded by the stretched and deformed rubber, and stabilized in a broken state. At the same time, the ridges on the rotor make the rubber material move along the axial direction of the rotor, which plays the role of stirring and mixing, so that the compounding agent is evenly mixed in the rubber material. The compounding agent is repeatedly sheared and broken, the rubber compound repeatedly deforms and recovers, and the rotor ridges are continuously stirred, so that the compounding agent is uniformly dispersed in the compound and reaches a certain degree of dispersion. Due to the shearing action of the rubber compound during mixing in the internal mixer is much greater than that of the open mixer, and the temperature of rubber mixing is high, the efficiency of the rubber mixing in the internal mixer is much higher than that of the open mixer.