《Table 3 Mechanical properties of different samples obtained from bending tests》

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《Preparation and Characterization of DGEBA/EPN Epoxy Blends with Improved Fracture Toughness》

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For epoxy blend samples，the gradual incorporation of E1L0 epoxy into E0L1 epoxy up to blend containing 40%E1L0 epoxy gradually improved the ductility of the resulting material.Further increase in E1L0 fraction in the blend reduced the material’s ductility to the level of E1L0 sample.The blend composition dependence of flexural strength also follows the same trend as that observed for the strain at break.It is interesting to observe that the E4L6，E6L4 and E8L2blend samples show bending ductility higher than that of the neat E1L0 sample.A synergistic effect of the blending process on the material’s ductility can be observed in these samples.This improved ductility comes from the microstructure of these blend samples.The flexural data obtained from the stress-strain curves are depicted in Table 3.