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- Sol-Gel Products Synonyms:
sol-gel, metal alkoxides, hydrolysis, powder, polycondensation, oligomers, sol formation, polymerization, crosslinking, 3-dimensional matrix, seeded gel, silica, silicon dioxide, sol-gels, sol-gel, sol-gel silica, silica powder,
1) Silica powder, monodispersed
2) Sol-gel silica microspheres
1) A low temperature method using chemical precursors that produces ceramics and glasses with better purity and homogeneity than high temperature conventional processes.
2) Sol gel has produced a wide range of compositions (mostly oxides) in various forms, including powders, fibers, coatings, thin films, monoliths, composites, and porous membranes.
3) The sol-gel process is a versatile solution process for making advanced materials, including ceramics and organic- inorganic hybrids.
4) In general, the sol-gel process involves the transition of a solution system from a liquid "sol" (mostly colloidal) into a solid "gel" phase.
5) Utilizing the sol-gel process, it is possible to fabricate advanced materials in a wide variety of forms: ultrafine or spherical shaped powders, thin film coatings, fibers, porous or dense materials, and extremely porous aerogel materials.
6) The starting materials used in the preparation of the "sol" are usually inorganic metal salts or metal organic compounds such as metal alkoxides.
7) In a typical sol-gel process, the precursor is subjected to a series of hydrolysis and polymerization reactions to form a colloidal suspension, or a "sol". Further processing of the "sol" makes it possible to make materials in different forms.
8) Durable thin films with a variety of properties can be deposited on a substrate by spin-coating or dip-coating.
9) When the "sol" is cast into a mold, a "wet gel" will form. With further drying and heat treatment, the "gel" is converted into dense materials. If the liquid in a wet "gel" is extracted under a supercritical condition, a highly porous and extremely low-density material called "aerogel" is obtained.
10) As the viscosity of a "sol" is adjusted into a given viscosity range, fibers can be drawn from the "sol".
11) Ultrafine and uniform powders are formed by precipitation, spray pyrolysis, or emulsion techniques.
Thin film coating, for piezoelectronic devices & resistors, powders for high quality electronic substrates, catalyst supports, sealants, catalytic converters, premium ceramics,
Varies
Varies. For further information please call the E.P.A. at +1.202.554.1404
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