High-Efficiency Deviation Design: This is the core technological feature of this equipment. It typically features multiple vacuum devolatilization sections connected in series. During extrusion, molten PMMA is fed into these sections. Under high vacuum, the surface area of the material increases dramatically, allowing residual methyl methacrylate monomers, moisture, and other small molecules to escape rapidly and be removed by the vacuum system.
Enhanced Melting and Mixing Capabilities: To support high-speed production and efficient devolatilization, these extruders are typically designed with high torque and high speed. The precise screw configuration (which may include mixing blocks and shear elements) provides strong shear force and uniform mixing, ensuring rapid and uniform melting of the PMMA resin and good dispersion of the devolatilizer (if added) or extracted volatiles in the melt, creating favorable conditions for subsequent devolatilization stages.
Precise Temperature and Pressure Control: PMMA materials are highly sensitive to processing temperature. This equipment is equipped with a segmented, high-precision temperature control system, enabling independent and stable control of the barrel temperature and screw core temperature at each stage from the feed port to the die head, preventing material degradation due to localized overheating or uneven heating. Stable pressure build-up ensures the melt forms a uniform thin layer in the devolatilization section, guaranteeing the dimensional stability of the final product.
Optimized Exhaust and Vacuum System: Devolatilization efficiency directly depends on efficient exhaust capacity. The equipment features a high-speed, high-vacuum multi-stage vacuum system (such as a series-connected vacuum pump group), and the exhaust port design prevents material from being sucked away or blocked, ensuring continuous and stable removal of volatiles and maintaining a stable high vacuum within the devolatilization chamber.
Adaptable to Various Raw Materials and Formulations: This process is not only suitable for the purification of virgin materials (polymerized raw rubber) but also particularly suitable for the regeneration and granulation of recycled PMMA. For raw materials containing significant monomer residues, moisture, or impurities from recycled materials, effective purification and restoration of material properties can be achieved by adjusting process parameters (such as vacuum level, temperature distribution, screw speed, etc.).
