What is a Colloidal Silica?
Colloidal silicas are suspensions of fine amorphous, nonporous, and typically spherical silica particles in a liquid phase. It may be produced by the Stöber process from Tetraethyl orthosilicate
Colloidal Silica Suppliers In South Africa
AERONTEC
Aerotech is a supplier and distributor of composite materials and technology in South Africa.
CONTACT AERONTEC
Cape Town
+27 (0) 21 671 2114
Gauteng
(+27) (0) 11 454 8258
What is colloidal silica used for?
Colloidal silica is used in a broad range of industries and applications, including the densification of concrete, cement, and other materials. Fine retention in paper manufacturing. Enhanced bonding of waterborne adhesives.
What is the raw material of colloidal silica?
Silica Particles with Organic Silicate as the Raw Material
This ultra-pure colloidal silica is obtained from organic silicate by wet hydrolysis. Colloidal silica. The finished product is obtained by distillation and precision filtration.
How do you prepare colloidal silica?
The colloidal silica was prepared via the sol-gel method at the base condition. Sodium ion of sodium silicate was removed by ion-exchanging to obtain the active silicic acid which was titrated with potassium hydroxide (KOH) solution to form the colloidal silica.
Is colloidal silica soluble in water?
All of the non-reactive, or colloidal, silica is rendered soluble above 600 psig and hence all of the silica in the boiler is, theoretically, capable of being vaporized. Boiler water will always test positive for silica because of the small reactive SiO2 leakage by the demin plant.