Flexible & Toughening Resin
Additive-type unsaturated polyester resin modifiers designed to improve impact resistance, flexibility, and crack propagation resistance in rigid UPR formulations. Blend 5–20% into standard resins to prevent shattering and improve durability.
Product Overview
Flexible and toughening unsaturated polyester resins are specialty additives that modify standard rigid UPR formulations to improve impact strength, elongation, and crack resistance. The 46-series flexible modifiers can be blended at 5–20% into general purpose, pultrusion, or casting resins to create composite parts that withstand mechanical shock, thermal cycling, and hail impact without catastrophic failure.
Common Challenges
Brittle cracking on impact during transport and installation causes high part rejection rates
Shattering of outdoor FRP parts in hail-prone regions leads to premature field failure and warranty claims
Vibration fatigue causes micro-crack propagation in transportation and industrial equipment components
Low elongation at break in standard formulations limits application in flexible joint and seal systems
Our Solution
Aertuo's 46-series flexible and toughening modifiers provide a simple drop-in solution for upgrading impact resistance. 46-89A offers general-purpose flexibility enhancement, 46-K1 provides higher elongation for demanding applications, and 46-K42 delivers maximum toughness for extreme impact conditions. Simply blend at 5–20% into your base resin system to achieve the desired balance of stiffness and flexibility without compromising processability.
Application Scenes
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Contact our technical team for product recommendations and expert support tailored to your application.