Title: Easily Dispersed Toughener for Epoxy Composite

Authors: Ya-Ting Su, Rabi Inoubli, Amy Lefebvre

DOI: 10.33599/nasampe/c.22.0024

Abstract: Epoxy composite formulators regularly look for innovative technologies to improve toughness. There are several ways to improve toughness including adjusting formulations, adding inorganic fillers, and organic fillers. For the organic fillers, there are reactive rubbers, block copolymers, and core-shell modifiers. All the organic fillers can improve toughness because the dispersed rubber domain absorbs the impact energy. When using reactive rubbers, formulators might encounter compromises in modulus and glass transition temperature. Block copolymers can improve toughness and have limited effects on physical properties; however, block copolymers are not widely commercially available. Core-shell technology has been identified and evaluated as one of the ways to improve toughness of epoxy composites; however, traditional core-shell modifiers are hard to disperse in liquid resins. An easily dispersed core-shell modifier was invented to unlock the ability of core-shell modifiers that can be dispersed in low shear, low temperature environments. The innovation improves productivity with faster and more homogeneous dispersion that leads to time and energy savings during the manufacturing process in various acrylic, vinyl ester and epoxy resins. With well dispersed core-shell modifiers in the epoxy composite formulation, enhanced toughness properties can be obtained along with no to minimal loss of modulus and glass transition temperature.

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Conference: CAMX 2022

Publication Date: 2022/10/17

SKU: TP22-0000000024

Pages: 9

Price: $18.00