Which Has Better Elasticity: PA6 or PA66 Brush Filament?
PA6 and PA66 are the two most common nylon brush filament materials, with distinct elasticity characteristics.
Conclusion: PA6 offers better soft elasticity, while PA66 excels in fatigue-resistant rebound.
- PA6 Filament
Features flexible molecular chains, high toughness and softness, with gentle bending recovery.
Ideal for household brushes, cosmetic brushes and other light‑to‑medium duty applications requiring a mild touch.
Cost-effective, but rigidity decreases significantly at high temperatures and may fatigue under long‑term heavy load.
- PA66 Filament
High crystallinity and tight molecular structure provide outstanding rigidity, strength and wear resistance.
Heat-resistant up to approximately 150°C, with crisp, powerful rebound.
Suitable for industrial brushes, road sweeping brushes, precision instrument brushes and other heavy‑duty, high‑temperature, high‑abrasion environments, with minimal deformation or flattening over time.
Selection Guide:
Choose PA6 for soft elasticity and cost performance.
Choose PA66 for high durability and consistent, strong rebound.
