Characterization of Mechanical of CTBN Liquid Rubber?Modified Epoxy Cured by Anhydride- and Amine-Based Agent

The main purpose of this work is to reveal the effects carboxyl-terminated butadiene–acrylonitrile (CTBN) rubber particles on fracture and tensile behavior anhydride-and amine-cured epoxy/CTBN blends. In study, 1 wt.%, 3 5 7 10 wt.% 15 CTBN were added two different epoxy-hardener systems. CTBN/epoxy blends prepared by ultrasonic mixing device curing processes determined DSC analysis. As fraction weight increased in both epoxy systems, a decrease strength modulus was detected, but deformation ability improved. toughness cured with amine-based hardener up addition then decreased. average particle size found have significant effect Compared pure epoxy, approximately 3.5-fold 10% / blend. agent, shifted reaction rate thus it provided better control over CTBN/epoxy. toughening mechanisms induced CTBN, such as cavitation matrix shear banding, contributed enhanced