|More dispersible large-particle alumina for fiber bonding and rigidizing|
|Wesolok D alumina rigidizer is a more dispersible, larger particle size colloidal alumina than regular Wesolok. It is a powder ready for fast dispersion in water at 20 to 30% concentration to give stable colloidal alumina sols for rigidizing fiber shapes that are more refractory and safer to use than colloidal silicas, with less migration.|
|Fast Dispersing —||Alumina sols of
20-30% concentration can easily be prepared with minimal mixing
|Withstands Higher Temperatures —||High purity alumina
provides for low reactivity and can be used to replace colloidal silica
where greater refractoriness at use temperatures is required.
|Rapid, Deeper Absorption —||The larger particle
size, with its lower surface change and viscosity, absorbs rapidly and deeply
for through rigidizing.
|No Cristobalite —||Completely cristobalite
free at use temperature, eliminating a common source of thermal shrinkage
and health-related concerns.
|Typical Physical Properties||
|pH (20% sol)||3 - 4|
|Average particle size (nm)||70|
|Concentration limit (sol)*||30%|
|Loss on Ignition**||7—8%|
|Toxicity||Non-toxic. Do not breathe dust. Dispersions are mildly acidic. Protect eyes from splashes. See SDS|
|Packaging||Fiber drums, 400 lbs net, loose or 20 lb bags; cartons, 60 lbs net.|
*Higher concentrations form thixotropic gels on standing
**Typical value for Wesolok D bonded fiber products.
1135 East 7th Street
Wilmington, DE 19801
phone (302) 655-7917 fax (302) 656-7885
e-mail the webmaster