Adhesion Loss,Polyesters
Description: Loss of adhesion between the polyester filler and the substrate, resulting in detachment of the filler from the substrate.
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ORIGIN AND POTENTIAL CAUSES
» Substrate not carefully prepared
» Polyester material unsuitable for galvanized substrate
» Too high surface temperature during forced drying
» Undercured filler - too much or too little hardener -
PREVENTION TECHNIQUES
» Clean and sand substrate thoroughly
» Follow the manufacturer’s instructions for forced drying
» Use proper mixing ratio of polyester materials
» Ensure the hardener is thoroughly mixed -
REMEDY
» Sand the damaged repair area well
» Redo the repair and refinish