| http://www.w3.org/ns/prov#value | - Useful fillers include, but are not limited to, clay, silane treated nanoparticle silicas (or nano-silicas), having diameters of from about 4 to about 75 nm; fumed silica, fused silica, mineral and fibrous fillers such as quartz powder, fused quartz, aluminum oxide, glass powder, mica, kaolin, dolomite, graphite, soot, and also carbon fibers and textile fibers.
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