Improving the toughness of thermosetting epoxy resins blending triblock copolymers.

In this study, the triblock copolymer poly(methyl methacrylate)--poly(butyl acrylate)--poly(methyl methacrylate) (MAM) was used to modify bisphenol A epoxy resin to improve its toughness. The effects of MAM on the curing behaviors, mechanical properties, fracture morphology and thermal properties of epoxy were carefully studied. The results of dissolution experiments show that MAM has good compatibility with epoxy resin under certain conditions.