LKAB Minerals develops and supplies magnetite, a natural iron oxide (Fe₃O₄) with unique properties. MagniF is the brand name for magnetite grades used as fillers in polymers and rubbers. With a density of 5.2 g/cm³, MagniF acts as a functional filler for polymers in a wide range of high-density applications. It also enables polymers to achieve a metallic look and feel, enhancing overall product perception.
High-density MagniF as a functional filler
MagniF is primarily used for its high density; however, it also offers thermal and electrical conductivity, ferrimagnetic properties, and can be heated by microwaves. MagniF-filled compounds are straightforward to process and mould. It is particularly well suited for sound and vibration damping applications.
High filler levels can be achieved in a wide variety of polymers without the need for surface treatment of the filler particles. In polypropylene (PP), densities above 3 g/cm³ can be achieved without difficulty through extrusion and/or injection moulding. When using inline compounding, densities of up to 3.5 g/cm³ are attainable.
Key benefits:
- Delivers high density to polymer compounds
- Enables precise control of weight distribution within polymer parts
- Adds a metallic look and feel to polymers
- Supports excellent surface finish in finished parts
- Enables high filler loading without the need for surface treatment
- Provides consistent, reliable product quality
Contact us today for more information, a sample or technical details.
