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Future Directions

Magnetite offers a property set unlike any other material and the opportunity to impart those properties to thermosetting and thermoplastic polymers, coatings, or elastomers. Since the introduction of filler-grade materials in the 1990s, many applications have arisen in a range of polymers including polypropylene, nylons, polyurethanes, and silicones. As people become aware of this comparatively new filler, applications emerge on a regular basis driven by the following properties:

  • • Magnetic properties
  • • High density
  • • Thermal conductivity
  • • High volumetric specific heat capacity
  • • Electrical conductivity
  • • Radiation shielding ability

Several new applications suggest themselves including magnetite as a tracer to make plastics detectable, as electromagnetic interference (EMI) shielding for cables (Aldissi 1993) with magnetite in the bedding compound or insulation, and for radiation shielding against microwaves or radar.


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