Impact Modifier for Polypropylene Compounds
Impact Modifier for Polypropylene Compounds: Selection Guide Choosing the right impact modifier for polypropylene compounds helps manufacturers improve toughness, reduce brittle failure, and meet the mechanical requirements of demanding plastic applications. The best solution depends on the polypropylene grade, target impact strength, operating temperature, processing method, and acceptable changes in stiffness and melt flow. For […]
Antioxidants for Recycled Polyolefins
Why Recycled Polypropylene and Polyethylene Need Fresh Antioxidants Recycled polypropylene (rPP) and recycled polyethylene (rPE) may require additional antioxidant stabilization because previous processing and service exposure can reduce their resistance to further oxidation. Extrusion, melting, heat, and shear can contribute to polymer degradation, particularly when the material has experienced several processing cycles. Re-stabilization helps compounders […]