Abstract
Measurements were made of the fracture suface energy of epoxy resins above their glass transition temperatures as a function of temperature, crack velocity and resin composition. The fracture energy, ℐ, obeys the WLF time-temperature superposition principle in the same way as in more conventional elastomers. Measurements also indicate a lower limit to ℐ, designated ℐ 0, which is independent of time and temperature. A theoretical calculation of ℐ 0 agrees well with the experimental data.
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King, N.E., Andrews, E.H. Fracture energy of epoxy resins above T g . J Mater Sci 13, 1291–1302 (1978). https://doi.org/10.1007/BF00544736
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DOI: https://doi.org/10.1007/BF00544736