Best Practices for Processing Flame Retardant Engineering Plastics: Temperature Control, Residence Time & Corrosion Protection

Flame retardant engineering plastics (FR-PA, FR-PC, FR-PP) are increasingly used in electrical and electronic applications, but their processing window is narrower than standard grades. FR additives can degrade and volatilize at elevated temperatures — leading to property loss, mold corrosion, and potentially harmful gases. This article distills essential processing guidelines: precise temperature control strategies, residence time management, screw material selection, mold corrosion protection, and preventing FR additive migration.