Fumed silica in thermoplastics

[maus2012]

Has anyone practical experience of using fumed silica or colloidal silica in thermoplastics for improvement of mechanical properties or abrasion resistance?

 

[Compositepro]

Nanno particles usually have little effect on abrasion resistance. You cannot get the filler level very high and the small particles simply get gouged out with the plastic during abrasion.

 

[tom1953]

FWIW, fumed silica does generally improve properties and abrasion resistance in vulcanized rubber compounds, typically with some silane coupling agent assisting.
tom