Sepasil®

Fused Alumina

Sepasil is a synthetic version of corundum which is a highly pure version of white fused alumina (Al2O3). The narrow particle size distribution is in the region of 40-120 microns with a mixture of both round and splintered particles being present. These particles can be coated -typically done with aminosilanes or methacrylsilanes which enhance the physical properties furth...    Read more  


Sepasil is a synthetic version of corundum which is a highly pure version of white fused alumina (Al2O3). The narrow particle size distribution is in the region of 40-120 microns with a mixture of both round and splintered particles being present. These particles can be coated -typically done with aminosilanes or methacrylsilanes which enhance the physical properties further. The transparency of the particles is extremely good but the key property of this mineral filler is the extreme hardness it adds to coatings and epoxy resins.

Another attribute is the resistance to hydrofluoric acid.



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Features


    • Extremely high hardness- 9 Mohs

    • Transparency is excellent

    • Chemically inert

    • Good thermal conductivity

Benefits


    • Scratch resistant

    • Abrasion resistant

    • UV curable top coats

Typical Applications


    • UV cure varnishes and parquet coatings

    • Durable epoxy resins

    • Sink and work tops


     

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