For challenging applications, Huntsman benzoxazine resins are an ideal alternative to conventional epoxy, phenolic and BMI resin systems.

Epoxy: Benzoxazine resins are 50% stiffer than traditional epoxies with flexural moduli in the 4,500 – 5,300 MPa range. The hot/wet performance of the new resins is also better than that of epoxy materials. The benzoxazines also offer lower shrinkage during cure.

Phenolic: Benzoxazine resins produce higher part accuracy with less micro-cracking than phenolic resins and do not generate volatiles during cure – which means higher-quality laminates with reduced chance of voids.

Bismaleimide: While bismalemides (BMIs) currently offer the highest Tgs, they require longer processing times

and an autoclave cure, resulting in higher manufacturing costs than benzoxazine resins.

Benzoxazine performance vs. traditional resins

Thermal performance and cost comparison among traditional resin chemistries