silicon dioxide

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Related to Amorphous silica: diatomaceous earth, Crystalline silica

silicon

 [sil´ĭ-kon]
a chemical element, atomic number 14, atomic weight 28.086, symbol Si. (See Appendix 6.)
silicon dioxide silica.

sil·i·ca

(sil'i-kă),
The chief constituent of sand, hence of glass.
[Mod. L. fr. L. silex (silic-), flint]

silicon dioxide

n.
Silica.

sil·i·ca

(sil'i-kă)
The chief constituent of sand, hence of glass.
Synonym(s): silicon dioxide.
[Mod. L. fr. L. silex (silic-), flint]

sil·i·ca

(sil'i-kă)
The chief constituent of sand, hence of glass.
Synonym(s): silicon dioxide.
[Mod. L. fr. L. silex (silic-), flint]
References in periodicals archive ?
2]/MAO catalytic system produced high-density polyethylene, with higher crystallinity values (60-62%) and fibrous morphology when appropriate SBA-15 mesostructured materials were used as supports instead of amorphous silica and silica-alumina.
As expected, the amorphous silica (S) does not show any crystallographic peak.
The number of functional groups on the SCC-10 can be estimated from the number of both CB and precipitated silica by assuming two kinds of surfaces on SCC-10, comprising amorphous silica and CB, having an equal surface to the precipitated silica and the base CB, respectively.
3]) and elevated temperature (80-85[degrees]C), most amorphous silica completely dissolves within the first 2 h of extraction, whereas it is assumed that Si release from silicates is constant over the entire extraction time of usually 5 h.
A number of studies reported that the use of crystalline silica performed better than amorphous silica under autoclave curing (Luke 2004; Jupe et al.
43, consistent with the refractive index expected for amorphous silica beads fabricated by the Stober-Fink-Bohn process [11].
Amorphous silica is often used as an inorganic component in the polymeric materials because of its high chemical stability, high specific surface area and accessibility.
Fillers include calcium carbonates, kaolin clays, alumina trihydrates, wood and fiber flocks, wood flours, micas, magnesium carbonates, and precipitated amorphous silica.
At the end of the precipitation process, after drying and washing, the precipitated amorphous silica is mechanically processed into micro pearls or granules (dimension of 1/10 mm to a few mm) to ease shipping, handling and use.
Second part: amorphous silica powder, plasticizer care unit for colorless concrete emulsion lubrication;
The silicon substrates being used are not limited to: polydimethylsiloxane, amorphous silica, petroleum distillates, methyltriacetoxy silane, or ethyltriacetoxy silane through which sensors may be embedded into to enable the detection platform.
The example consists of 1 wt% single-wall carbon nanotubes, 32 wt% calcium carbonate, 5 wt% iron powder, 15 wt% epoxy resin, 1 wt% amorphous silica, 8 wt% nonfibrous talc, 0.