Abstract
A series of polymer blends were prepared from 1,3-bis(3,4-dicyanophenoxy)benzene (3BOCN) and epoxy resin with methyl tetrahydrophthalic anhydride as curing agent. The curing behavior and curing kinetics of the blends were studied by differential scanning calorimetry. The apparent activation energy of the blends with various contents of 3BOCN was higher than that of the blends without 3BOCN. A model experiment suggested that there is no obvious reaction between phthalonitrile and epoxy. The thermal and mechanical properties of the polymer blends were evaluated. The polymer blends exhibit high storage modulus and char yield compared with the neat epoxy. The polymer blends show ductile fracture morphology by scanning electron microscopy (SEM) images.
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This work was financially supported by the National Natural Science Foundation of China (Nos. 51203098 and 51173114).
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Lv, Jb., Ma, Jz., Cheng, K. et al. Insights into phthalonitrile/epoxy blends modification system from non-competitive cure system based on alicyclic anhydride. Chin J Polym Sci 35, 1561–1571 (2017). https://doi.org/10.1007/s10118-017-1992-8
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DOI: https://doi.org/10.1007/s10118-017-1992-8