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Silica film synthesized at room temperature
is a technology developed at the University of Padua (Italy) for the
protection of materials by applying thin layers of silica (the
constituent of glass and quartz).
||The products of the SIOX-5 range are liquid and are based on sol-gel technology. Once applied the gel forms a thin silica layer colorless and transparent.||The process takes place at room temperature without compromising the treated surface. The nanometric thikness protects while mantaining the aesthetic characteristics of the material.||Our
formulations are easy to use: they do not need thermal treatments or
controlled atmosphere, they could be applied to new or existing
objects. SIOX-5 coating are a viable alternative to CVP or PVD
|THE SOL GEL PROCESS
Thin films of silica glass
Il processo sol-gel è una tecnica che consente di sintetizzare materiali ceramici come la silice, materiale che richiederebbe cotture superiori ai 1000°C, con un processo semplice, rapido e a temperatura ambiente.
The starting solution is a colloidal suspension of particles from chemical precursors of high purity.
During the process, the use of proper catalysts results in the formation of a wet gel.
|FILM DI XEROGEL
The SIOX-5 gel can be easily applied to the material to be treated where it forms a very thin layer of amorphous silica covering uniformly the surface. The surface is dry to the touch in few minutes.
The film features improve with time. The densification does not require thermal treatment since it takes place spontaneously reaching the full stability in about 72 hours.
|FEATURES OF SIOX-5 COATINGS
Interazione e legame con la superficie
Simplified representation of the interaction between SIOX-5 coating and treated surfaces
|The SIOX-5 products have an high compatibility with silica materials and with surfaces with OH end-groups.
||Once applied, the product is self-levelling. The active silica molecules in the formulaton reacts with the treated surface.||Strong covalent bonds Si-O-X (where X is the composition of the surface) and water molecules are formed.||The formation of bonds continues while water and solvent evaporate.
|PERFORMANCES ON NON-ABSORBENT SURFACES
application of SIOX-5 on smooth and non-absorbent surfaces as glass,
reduces the surface roughness. The protection depends on the reduction
of both the surface exposed to degradation and the number of OH groups
able to react with water.
||Surface treated with SIOX-5
Elaborazioni di analisi AFM (Microscopia a forza atomica)
eseguite su campioni di vetro.
|PERFORMANCES ON POROUS SURFACES
SIOX-5 products may be applied on porous surfaces. The treatment covers
the pores and penetrates in depth while preserving the natural
transpiration of the material. The protection results from the
functionalized end groups of silica, conferring hydrophobic properties
to the treatment.
||Surface treated with SIOX-5
Analisi ESEM-EDS (Microscopia a scansione elettronica)
eseguite su campioni di cotto.
Via Carlo Goldoni 18 Padova 35131 PD Italia
P.IVA 04562440281 - Cap. sociale € 10.000 i.v. - REA 399761 PD
|COPYRIGHT SILTEA SRL 2017|