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Fumed silica in thermoplastics

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maus2012

maus2012

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Has anyone practical experience of using fumed silica or colloidal silica in thermoplastics for improvement of mechanical properties or abrasion resistance?
 
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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.
 
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FWIW, fumed silica does generally improve properties and abrasion resistance in vulcanized rubber compounds, typically with some silane coupling agent assisting.
tom
 
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