A new process for making vitreous silica is described in which fine silica particles are mixed with polymer solution, sheared strongly to break down agglomerates, and dried. After the polymer has been burnt out, the material is fired near 1000 degrees C. The polymer disperses the powder grains to aid moulding and sintering, while preventing cracking during the drying phase.
Origin
Ici Advanced Materials
Journal Title
J Am Ceram Soc 1989 72 3 432-436
Sector
Special Glass
Class
S 251