11 Мар Transfer of Polyol and Isocyanate in Polyurethane Plants
Engineering Priorities Beyond Metering
Plyols are typically medium- to high-viscosity liquids. Depending on formulation, they may contain catalysts, fillers, flame retardants, or blowing agents. Viscosity is strongly temperature-dependent and, in formulated systems, excessive shear can alter rheological behavior.
Isocyanates — particularly MDI — introduce a different level of complexity. They are moisture-sensitive and reactive. Even minimal water contamination initiates CO₂ formation and solid byproducts (carbamates), leading to line obstruction, pressure instability, and mechanical seizure. Additionally, MDI can crystallize if temperature drops below safe operating thresholds.
This means that transfer is not simply a matter of moving fluid from point A to point B. It is a controlled handling process under chemical, thermal, and mechanical constraints.
At Pompe Cucchi, we engineer external gear pumps designed for the stable and safe transfer of polyols and isocyanates in polyurethane plants.
If your process demands reliability, chemical compatibility, and long-term performance, we are ready to support your system design.
Contact Pompe Cucchi to optimize your transfer section and strengthen your PU process stability.
