https://www.ajol.info/index.php/njt/article/viewFile/123443/112983

you may find valid information from above link

Hi,

you might want to direct your question to Concria company in Finland:

https://www.concria.com/products/hard-nano-silica/

They seem to have wide range of experience into specific add ins.

B.R.,

Ari

Thank you S Kalaiselvan , it seems interesting. Let me go through it.

Thank you Ari Happonen , I beleive its a commercial material supplier. As per thier website, they do not have enough data to help me out.