How to Improve the Flame Retardancy and Drip Resistance of PA (Polyamide)? Is There a Modification Formulation?

The Limiting Oxygen Index (LOI) of pure PA is approximately 21–24, classifying it as a flammable material. Systematic modification is required to simultaneously achieve flame retardancy and suppress dripping. Below is a targeted modification formulation framework:

PA Resin: 90–93%

SFR-Si907 (Silicone Synergist): 0.5–1.0%

Primary Flame Retardant (e.g., Hypophosphite Complex): 8–12%

Glass Fiber (for reinforcement): 0–30%

Antioxidant: 0.2–0.5%

This formulation works through the multi-effect synergy of "Phosphorus-Silicon-Glass Fiber". It suppresses combustion dripping and ensures that the modified material meets the strength and heat resistance requirements for engineering applications.

Note: The actual formulation should be adjusted based on specific application requirements, regulatory restrictions, and processing conditions. Small-scale sample testing and evaluation are strongly recommended.

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