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Levasil® FO1440 | |
Colloidal silica for bonding and rigidizing fibers | |
Levasil® FO1440 is the most commonly used colloidal silica for bonding refractory fibers and rigidizing refractory fiber shapes and boards. Levasil® FO1440 is an economical 40% concentration silica sol of 14 nanometer diameter amorphous silica spheres. The particles carry a slightly negative surface charge with a high surface area to weight ratio for good floccing with Westar+ and Westar+3 cationic starch. | |
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Good High Temperature Bonds — | Colloidal silica
bonds withstand temperatures up to 2300oF with low shrinkage. |
Saves Money — | Economical 40%
concentration reduces freight and package costs over lower concentration
sols. |
Flocs with Cationic Starch — | Negative surface
charge flocs cationic starch refractory fibers together to form a three
dimensional floc for good product strength. |
Rigidizes Effectively — | Can be used diluted
or full strength for sealing or rigidizing of fiber-bonded shapes. |
Typical Physical Properties | |||
Color | Clear | ||
Consistency | Slightly viscous liquid | ||
Specific Gravity | 1.3 | ||
Specific Surface Area, m2/g | 250 | ||
Particle Size, nm | 11 (calculated) | ||
Silica, wt% | 40 | ||
Na2O, wt% | 0.50 | ||
pH @ 25°C | 10.4 | ||
Viscosity @ 25°C, cp | 15 | ||
Toxicity | Non-toxic. See SDS. | ||
Packaging | Bulk tanks, 4000 gal; totes, 275 gal. ;drums, 55 gal; pails, 5 gal. | ||
WesBond Corporation 1135 East 7th Street Wilmington, DE 19801
phone (302) 655-7917 fax (302) 656-7885
e-mail the webmaster
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