Wesbond - Wesil PRX

Wesil PRX

Binder system to replace phenolics

Wesil PRX is a blend of natural starches and our proprietary aluminosilicate binder designed to reduce phenolic resins in low- fiber hot top boards and other insulating fixtures used in metal production, smelting, and casting.

WESIL PRX is not quite as effective as some phenolics and may require more for equivalent hardness; we suggest you try it first at 5% by weight and adjust from there for desired strength and hardness.

Wesil PRX offers these advantages

Replaces Noxious Phenolics

Non-toxic heat-set resin replaces hazardous phenolic resin systems.

Lower drying temperature

Contains a heat set resin that cures at 200°F so good strength is obtained at a drying temperature of 250°F, eliminating the high baking temperature required with phenolics.

Moisture Tolerant Finished Parts

Formed parts are more able to maintain hardness and strength if exposed to humidity.

No Cristobalite

Completely cristobalite free at use temperature eliminating a common source of thermal shrinkage problems and health related concerns.

Typical Physical Properties

Color

Cream

Consistency

Medium density dry powder

Approximate Bulk Density (pcf)

Loss on Ignition

4 – 5% Typical value for Wesil RP-bonded fiber products.)