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Wesolok D
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.

Wesolok D offers these advantages

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 starch.

No Cristobalite — Completely cristobalite free at use temperature, eliminating a common source of thermal shrinkage and health-related concerns.

Typical Physical Properties

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Color White
Consistency Dry powder
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.

WesBond Corporation

1135 East 7th Street

Wilmington, DE  19801

phone (302) 655-7917 fax (302) 656-7885 

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