Polyurethane Coatings

Armaguard Coatings

To improve resistance to humidity, polyurea is blended with urethane. Water in the air will react with a urethane producing a cellular, porous material, which greatly diminishes physical properties. Suppliers of low pressure cold spray systems must rely solely on adding “moisture scavengers” to their material. This does not match the level of humidity protection provided by the addition of polyurea. Polyuereas are usually not used in low pressure systems because it generally sets-up too fast and plugs their “low tech” mixing tube gun. Polyurea also helps keep the material from softening in high heat conditions.

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