HyPox RF928
HyPox RF928
HyPox RF928 adduct is an epoxy phenol novolac resin toughened with a CTBN (carboxyl-terminated butadiene-acrylonitrile) co-polymer. HyPox® RF928 adduct possesses a relatively low viscosity, a functionality of 2.3, and an elastomer content of 20%. The CTBN improves the toughness of cured epoxy formulations through the development of two phases during cure. The toughness improvement is achieved at a minimal sacrifice in Tg. Formulations incorporating this adduct exhibit improvement in impact and thermal cycling resistance, peel and tensile shear strengths, and low-temperature mechanical properties compared to non-toughened epoxies. This adduct, due to its higher functionality, should provide improved chemical and heat resistance compared to DGEBA toughened at an equal rubber level.
HyPox RF928 adduct should be considered for use as the sole resin or as a part of the resin component of your formulation. The optimum concentration of this adduct should be determined empirically. Typical applications generally incorporate 5-15 phr (parts per hundred parts resin) rubber to achieve optimal toughness; higher concentrations increase flexibility.
Applications for HyPox RF928
- Adhesives
- Laminating
- Impact resistance coatings
- Reinforcements
- Filament winding
- Molding compounds
Properties
Check out other HyPox Elastomer Modified Epoxy Resins in the CVC Product Brochure!
