Silica Thickener
Category: Additives for coatings
Description:
Used to control the viscosity of mixed epoxy systems.
 
Typical Use:

Can be used alone for a very smooth, non-sagging, high strength mixture or combined with fillers or fibers to make them non-sagging. 

Apparent use of Nanotechnology: Silica Fume
Reason for Inclusion:

"This material is also referred to as colloidal or fumed silica, and is an excellent thixotropic agent" -Retrieved 7/24/2020 from https://www.systemthree.com/products/silica-thickener?_pos=1&_sid=3e3937707&_ss=r

Safety Data Sheet (SDS):

available online (see product link)