|Highly dispersible large-particle colloidal alumina for fiber binding|
|Wesolok D is a highly dispersible, larger particle size colloidal alumina powder. It is used with cationic starch for vacuum forming ceramic fiber shapes. Wesolok D is used for bonding fiber shapes that are more refractory and safer to use than colloidal silicas.|
|No pre-dispersing or aging —||Can be added dry
to vacuum forming fiber slurries without pre-dispersing or aging, saving
extra steps and equipment costs.
|Withstands Higher Temperatures —||High purity alumina
provides low reactivity and can be used to replace colloidal silica where
greater refractoriness at use temperatures is required.
|Flocs with Cationic Starch —||The lower surface
charge of the alumina particles enables them to floc successfully with cationic
|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 MSDS|
|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.
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